[IR] Remove the DIExpression field from DIGlobalVariable.

[aprantl]

Summary

This patch implements PR31013 by introducing a DIGlobalVariableExpression that holds a pair of DIGlobalVariable and DIExpression.

Currently, DIGlobalVariables holds a DIExpression. This is not the best way to model this:

1. The DIGlobalVariable should describe the source level variable, not how to get to its location.
2. It makes it unsafe/hard to update the expressions when we call replaceExpression on the DIGLobalVariable.
3. It makes it impossible to represent a global variable that is in more than one location (e.g., a variable with multiple DW_OP_piece-s). We also moved away from attaching the DIExpression to DILocalVariable for the same reasons.

A better representation would be to add a DIGlobalVariableExpression(var: !DIGlobalVariable(...), expr: !DIExpression(...)) that wraps a global variable and an expression. For example, let's say we have a global symbol g that doesn't need an expression — this would still be represented as:

@g = global i32 0, !dbg !0
!0 = DIGlobalVariable(name: "g", ...)

Later, after some transformation, this becomes:

@opt_g = global i32 *, !dbg !1
!0 = distinct !DIGlobalVariable(name: "g", ...) ; Identical to !0 above.
!1 = !DIGlobalVariableExpr(var: !0, expr: !2)   ; Not distinct.
!2 = !DIExpression(DW_OP_deref, ...)

This allows transformations to just add new mergeable metadata on top of the existing DIGlobalVariable without blowing up the representation if they aren't needed.
[reply] [-] Comment 1

For more discussion see https://llvm.org/bugs/show_bug.cgi?id=31013.

[aprantl]

To review my own patch: I'll make another iteration replacing the MDNode * references to global variables with a more typesafe PointerUnion<GlobalVariable, GlobalVariableExpression>.

[aprantl]

Improved type-safety by adding a DIGlobalVarExpr pointer union.

[aprantl]

Rebased on trunk, which most importantly should fix all reservations David had about DW_OP_piece in the driving example.

[aprantl]

Now rebased the patch on https://reviews.llvm.org/D27550 which is what I really should have done. This fixes the expected output in the split-global.ll testcase.

[aprantl]

One more bugfix for the split-global.ll testcase.

[dblaikie]

include/llvm/IR/DebugInfoMetadata.h

1047–1048

Usually best to make operators non-members where possible (helps with symmetric implicit conversions of LHS and RHS operands, for example). They can still be defined inline if you prefer - by declaring them as friends (which you probably want/need to do anyway)

include/llvm/IR/GlobalVariable.h

177

Is this union for backwards compatibility? (so things can still refer directly to a DIGlobalVariable?) If so, might be nice to push that compatibility earlier - map old debug info by creating new DIGlobalVariableExpressions, rather than letting the old semantics remain further through the system.

lib/Bitcode/Reader/BitcodeReader.cpp

2972–2975 ↗

(On Diff #80692)

might be worth inverting this into a conditional operator

if (Attach) {
  Attach->addDebugInfo(Expr ? DGVE : DGV);

lib/CodeGen/AsmPrinter/CodeViewDebug.cpp

2209

Not quite sure what this means/what the implications are?

lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp

77

Perhaps this should be called Exprs (since some of the expressions won't themselves be globals in LLVM's sense - some might just be direct constants, etc)?

156

const auto &

195

Should finalize return the DIELoc instead of having it kept as a separate/parallel variable that DIEDwarfExpression is updating?

lib/CodeGen/AsmPrinter/DwarfDebug.cpp

489–492

(reinforcing previous comment - would be good to do a full migration rather than carrying more variety in the IR format - or at least map to the new semantics at a lower level (at bitcode/IR reading time) rather than having all the code walking a this IR having to conditionalize like this)

lib/IR/DIBuilder.cpp

87–88

std::vector<Metadata*> Elts(AllGVs.size());

87–90

Oh - this might not be doing what you want (got test coverage?)

resize + push_back, means you'll have AllGVs.size() null pointers, then all the unwrapped elements after that.

Perhaps you meant reserve?

lib/IR/DebugInfo.cpp

55–56

early return to reduce indentation?

[aprantl]

include/llvm/IR/GlobalVariable.h

177

The union (the canonical definition is in DebugInfoMetadata.h exists so we don't need to waste a DIGlobalVariableExpression node on global variables that don't need an DIExpression. This is an optimization that Duncan suggested (though I can't find where at the moment).

lib/CodeGen/AsmPrinter/CodeViewDebug.cpp

2209

It's just something I noticed while updating the code. Could be a separate commit.

lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp

195

Not sure I understand. You mean like

class DIEDwarfExpression {
...
  DIELoc finalize() {
    DwarfExpression::finalize();
    return DIE;
  }
}

...
addBlock(*VariableDIE, dwarf::DW_AT_location, DwarfExpr.finalize());

lib/CodeGen/AsmPrinter/DwarfDebug.cpp

489–492

Yeah not sure. Doing it this way saves a couple of pointers for global variables without expressions and makes the IR easier to read.

lib/IR/DIBuilder.cpp

87–90

whoa. Thanks!

[aprantl]

Address review feedback. Thanks!

[aprantl]

Uploaded a patch that gets rid of the PointerUnion and updates all textual testcases to use DIGlobalVariableExpression.

[dblaikie]

It'd probably be nice for the upgraded tests to not use the inline metadata representation, but have another numbered node (just for consistency - because we don't have any DI metadata like that now, and I doubt we'll write it that way by hand in the future either, so it'll be out of place, etc (possibly making future auto upgrades more difficult by having more varied/odd/surprising representations to match/handle)). But I understand if that might be difficult to find a valid number for the newly introduced node.

lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp

666

This seems strange - when/how would an imported entity refer to a DIGlobalVariableExpression? It should only ever refer to a DIGlobalVariable, right?

lib/CodeGen/AsmPrinter/DwarfDebug.cpp

498–499

Wouldn't this leave the GVs from other CUs in the GVMap, causing them to be emitted into future CUs as well?

I guess the Processed check below avoids that? Could we avoid it by design in some other way, perhaps? For example when we go to insert something into the GVMap, if it's a new insertion we could emit it, otherwise we could ignore it? (I suppose this wouldn't work for the things that are put in the GVMap by the globals() loop above?)

Does the CU's global variable list currently contain all the globals (not just the constants?)? Then what's the need for the globals() loop above? To discover all instances of a global variable across CUs because they might all contribute to the location of the global in debug info?

lib/Transforms/Instrumentation/AddressSanitizer.cpp

1656

Might be worth putting the type here instead of auto so it's clear it's a handle type that can be copied intentionally/cheaply/etc.

[aprantl]

I just finished writing a script that gets rid of the inline representation for DIGlobalVariable. I put it into a separate review, because it causes a lot of distracting churn: https://reviews.llvm.org/D27765.

[aprantl]

lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp

666

The example I had in mind was this:

namespace { // Force c to be local.
  namespace A {
    int c = 42;
  }
}
using A::c;

Unfortunately it doesn't look like this works at the moment. We're dropping the constant somewhere.

lib/CodeGen/AsmPrinter/DwarfDebug.cpp

498–499

GVMap is used to collect all DIGlobalVariableExpressions that contribute to on global variable's location in the debug info. We need to iterate over all globals once to establish this mapping.

Then, for each global variable in the current CU we emit debug info for it and insert it into Processed to make sure we don't do it again.

I don't think that this two-step process can be shortened; let me know if you see a way that I missed.
But, I think that there is still an unhandled case, and that is a global variable with two constants in DIExpressions and no global symbol. I'll fix that and add a testcase.

Finally, to your last question: Yes, they are listed in the CU, but the global symbol is not reachable from the metadata; we refer to metadata via the !dbg attachment, not the other way round.

lib/Transforms/Instrumentation/AddressSanitizer.cpp

1656

I think this should just stay an auto *. This is a leftover from the PointerUnion days.

[aprantl]

Address outstanding issues.

[aprantl]

It turns out, however, that the Verifier rejects imported DIGlobalVariableExpressions anyway, so I'm just removing that case.

[aprantl]

Address the comment about finalize() that I missed earlier.

[dblaikie]

lib/CodeGen/AsmPrinter/DwarfDebug.cpp

500

(terminology:
First loop: the "for globals" loop outside the CU loop. This one finds/associates GVEs on actual globals.
Second loop: the first "for global variables" loop inside the CU loop. This one finds any GVEs over constants (not associated with globals) - does the CU GV list not contain the GVEs associated with actual globals? (if it does contain those, then we might have duplicates in the first and second loops - which seems unfortunate)
Third loop: the second "for global variables" loop inside the CU loop - this one creates the global variables.

Should this be scoped outside of the CU loop?

(if the same global variable (eg: static in an inline function) is defined in multiple translation units - we only really need to emit it in one of them, not duplicate the description in all of them, right?)

Also - adding more things to the GVMap inside CU loop then processing the contents seems a bit strange - at best (& I think) benign, at worst one CU could leak something into another? (& likely somewhere in between: performance degredation by the final CU having many more things in the map than it needs, just making lookups slow, etc)

I think maybe the Processed set needs to move out of the CU loop, and we should remove entries from the GVMap in the Third Loop below (essentially migrating things out of the GVMap once they're handled - but recording that fact in the Processed (we can't just take absence as an indication because it might be absent because it's been optimized away to constants, so it wouldn't appear until the Second Loop - we shouldn't add things in the Second Loop if they're already in Processed, perhaps? Then we wouldn't need a conditional in the third loop?)

Oh, the 3rd loop could be over the GVMap, filtered by whether the unit is the current one. Which could be more efficient if there are many fragments of variables - which I guess is not teh common case, so the current pivot's probably better.

There do seem like an awful lot of lookups in many directions in these three loops. Hrm. :/

Maybe if we started off CU-specific? (the First Loop could create a map from CU -> GV -> GVEs, then you could do one lookup at the start of the cu loop, smaller lookups for the Second Loop (but probably still a second lookup for Processed - or this could be kept down in the Third Loop so we only needed to do it once per GV, instead of once per GVE in the CU), and the Third Loop could use no lookups at all, just loop over the GV->GVE mapping)

[dblaikie]

Sounds good to me - If you want to check with Duncan too, up to you.

include/llvm/Bitcode/LLVMBitCodes.h

enum MetadataCodes {
   METADATA_EXPRESSION = 29,      // [distinct, n x element]
   METADATA_OBJC_PROPERTY = 30,   // [distinct, name, file, line, ...]
   METADATA_IMPORTED_ENTITY = 31, // [distinct, tag, scope, entity, line, name]
   METADATA_MODULE = 32,          // [distinct, scope, name, ...]
   METADATA_MACRO = 33,           // [distinct, macinfo, line, name, value]
   METADATA_MACRO_FILE = 34,      // [distinct, macinfo, line, file, ...]
   METADATA_STRINGS = 35,         // [count, offset] blob([lengths][chars])
   METADATA_GLOBAL_DECL_ATTACHMENT = 36, // [valueid, n x [id, mdnode]]
+  METADATA_GLOBAL_VAR_EXPR = 37, // [distinct, var, expr]
 };
 
 // The constants block (CONSTANTS_BLOCK_ID) describes emission for each
 // constant and maintains an implicit current type value.
 enum ConstantsCodes {
   CST_CODE_SETTYPE = 1,          // SETTYPE:       [typeid]
   CST_CODE_NULL = 2,             // NULL
   CST_CODE_UNDEF = 3,            // UNDEF

include/llvm/IR/DIBuilder.h

public:
     /// \param Ty          Variable Type.
     /// \param isLocalToUnit Boolean flag indicate whether this variable is
     ///                      externally visible or not.
     /// \param Expr        The location of the global relative to the attached
     ///                    GlobalVariable.
     /// \param Decl        Reference to the corresponding declaration.
     /// \param AlignInBits Variable alignment(or 0 if no alignment attr was
     ///                    specified)
-    DIGlobalVariable *createGlobalVariable(DIScope *Context, StringRef Name,
-                                           StringRef LinkageName, DIFile *File,
-                                           unsigned LineNo, DIType *Ty,
-                                           bool isLocalToUnit,
-                                           DIExpression *Expr = nullptr,
-                                           MDNode *Decl = nullptr,
-                                           uint32_t AlignInBits = 0);
+    DIGlobalVariableExpression *
+    createGlobalVariable(DIScope *Context, StringRef Name,
+                         StringRef LinkageName, DIFile *File, unsigned LineNo,
+                         DIType *Ty, bool isLocalToUnit,
+                         DIExpression *Expr = nullptr, MDNode *Decl = nullptr,
 
     /// Identical to createGlobalVariable
     /// except that the resulting DbgNode is temporary and meant to be RAUWed.
     DIGlobalVariable *createTempGlobalVariableFwdDecl(
         DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *File,
-        unsigned LineNo, DIType *Ty, bool isLocalToUnit, DIExpression *Expr,
-        MDNode *Decl = nullptr, uint32_t AlignInBits = 0);
+        unsigned LineNo, DIType *Ty, bool isLocalToUnit, MDNode *Decl = nullptr,
+        uint32_t AlignInBits = 0);
 
     /// Create a new descriptor for an auto variable.  This is a local variable
     /// that is not a subprogram parameter.
     ///
     /// \c Scope must be a \a DILocalScope, and thus its scope chain eventually
     /// leads to a \a DISubprogram.
     ///
     /// If \c AlwaysPreserve, this variable will be referenced from its

include/llvm/IR/DebugInfo.h

 
 private:
   void InitializeTypeMap(const Module &M);
 
   void processType(DIType *DT);
   void processSubprogram(DISubprogram *SP);
   void processScope(DIScope *Scope);
   bool addCompileUnit(DICompileUnit *CU);
-  bool addGlobalVariable(DIGlobalVariable *DIG);
+  bool addGlobalVariable(DIGlobalVariableExpression *DIG);
   bool addSubprogram(DISubprogram *SP);
   bool addType(DIType *DT);
   bool addScope(DIScope *Scope);
 
 public:
   typedef SmallVectorImpl<DICompileUnit *>::const_iterator
       compile_unit_iterator;
   typedef SmallVectorImpl<DISubprogram *>::const_iterator subprogram_iterator;
-  typedef SmallVectorImpl<DIGlobalVariable *>::const_iterator
-      global_variable_iterator;
+  typedef SmallVectorImpl<DIGlobalVariableExpression *>::const_iterator
+      global_variable_expression_iterator;
   typedef SmallVectorImpl<DIType *>::const_iterator type_iterator;
   typedef SmallVectorImpl<DIScope *>::const_iterator scope_iterator;
 
   iterator_range<compile_unit_iterator> compile_units() const {
     return make_range(CUs.begin(), CUs.end());
   }
 
   iterator_range<subprogram_iterator> subprograms() const {
     return make_range(SPs.begin(), SPs.end());
   }
 
-  iterator_range<global_variable_iterator> global_variables() const {
+  iterator_range<global_variable_expression_iterator> global_variables() const {
     return make_range(GVs.begin(), GVs.end());
   }
 
   iterator_range<type_iterator> types() const {
     return make_range(TYs.begin(), TYs.end());
   }
 
   iterator_range<scope_iterator> scopes() const {
     return make_range(Scopes.begin(), Scopes.end());
   }
 
   unsigned compile_unit_count() const { return CUs.size(); }
   unsigned global_variable_count() const { return GVs.size(); }
   unsigned subprogram_count() const { return SPs.size(); }
   unsigned type_count() const { return TYs.size(); }
   unsigned scope_count() const { return Scopes.size(); }
 
 private:
   SmallVector<DICompileUnit *, 8> CUs;
   SmallVector<DISubprogram *, 8> SPs;
-  SmallVector<DIGlobalVariable *, 8> GVs;
+  SmallVector<DIGlobalVariableExpression *, 8> GVs;
   SmallVector<DIType *, 8> TYs;
   SmallVector<DIScope *, 8> Scopes;
   SmallPtrSet<const MDNode *, 32> NodesSeen;
 };
 
 } // end namespace llvm
 
 #endif

include/llvm/IR/DebugInfoMetadata.h

private:
   }
   ~DICompileUnit() = default;
 
   static DICompileUnit *
   getImpl(LLVMContext &Context, unsigned SourceLanguage, DIFile *File,
           StringRef Producer, bool IsOptimized, StringRef Flags,
           unsigned RuntimeVersion, StringRef SplitDebugFilename,
           unsigned EmissionKind, DICompositeTypeArray EnumTypes,
-          DIScopeArray RetainedTypes, DIGlobalVariableArray GlobalVariables,
+          DIScopeArray RetainedTypes,
+          DIGlobalVariableExpressionArray GlobalVariables,
           DIImportedEntityArray ImportedEntities, DIMacroNodeArray Macros,
           uint64_t DWOId, bool SplitDebugInlining, StorageType Storage,
           bool ShouldCreate = true) {
     return getImpl(Context, SourceLanguage, File,
                    getCanonicalMDString(Context, Producer), IsOptimized,
                    getCanonicalMDString(Context, Flags), RuntimeVersion,
                    getCanonicalMDString(Context, SplitDebugFilename),
                    EmissionKind, EnumTypes.get(), RetainedTypes.get(),
                    GlobalVariables.get(), ImportedEntities.get(), Macros.get(),
                    DWOId, SplitDebugInlining, Storage, ShouldCreate);
   }
   static DICompileUnit *
   getImpl(LLVMContext &Context, unsigned SourceLanguage, Metadata *File,
           MDString *Producer, bool IsOptimized, MDString *Flags,
public:
   static void getIfExists() = delete;
 
   DEFINE_MDNODE_GET_DISTINCT_TEMPORARY(
       DICompileUnit,
       (unsigned SourceLanguage, DIFile *File, StringRef Producer,
        bool IsOptimized, StringRef Flags, unsigned RuntimeVersion,
        StringRef SplitDebugFilename, DebugEmissionKind EmissionKind,
        DICompositeTypeArray EnumTypes, DIScopeArray RetainedTypes,
-       DIGlobalVariableArray GlobalVariables,
+       DIGlobalVariableExpressionArray GlobalVariables,
        DIImportedEntityArray ImportedEntities, DIMacroNodeArray Macros,
        uint64_t DWOId, bool SplitDebugInlining),
       (SourceLanguage, File, Producer, IsOptimized, Flags, RuntimeVersion,
        SplitDebugFilename, EmissionKind, EnumTypes, RetainedTypes,
        GlobalVariables, ImportedEntities, Macros, DWOId, SplitDebugInlining))
   DEFINE_MDNODE_GET_DISTINCT_TEMPORARY(
       DICompileUnit,
       (unsigned SourceLanguage, Metadata *File, MDString *Producer,
public:
   StringRef getFlags() const { return getStringOperand(2); }
   StringRef getSplitDebugFilename() const { return getStringOperand(3); }
   DICompositeTypeArray getEnumTypes() const {
     return cast_or_null<MDTuple>(getRawEnumTypes());
   }
   DIScopeArray getRetainedTypes() const {
     return cast_or_null<MDTuple>(getRawRetainedTypes());
   }
-  DIGlobalVariableArray getGlobalVariables() const {
+  DIGlobalVariableExpressionArray getGlobalVariables() const {
     return cast_or_null<MDTuple>(getRawGlobalVariables());
   }
   DIImportedEntityArray getImportedEntities() const {
     return cast_or_null<MDTuple>(getRawImportedEntities());
   }
   DIMacroNodeArray getMacros() const {
     return cast_or_null<MDTuple>(getRawMacros());
   }
public:
   /// DICompileUnit should be fairly rare.
   /// @{
   void replaceEnumTypes(DICompositeTypeArray N) {
     replaceOperandWith(4, N.get());
   }
   void replaceRetainedTypes(DITypeArray N) {
     replaceOperandWith(5, N.get());
   }
-  void replaceGlobalVariables(DIGlobalVariableArray N) {
+  void replaceGlobalVariables(DIGlobalVariableExpressionArray N) {
     replaceOperandWith(6, N.get());
   }
   void replaceImportedEntities(DIImportedEntityArray N) {
     replaceOperandWith(7, N.get());
   }
   void replaceMacros(DIMacroNodeArray N) { replaceOperandWith(8, N.get()); }
   /// @}
 
public:
   bool isFragment() const;
 
   /// Return the offset of this fragment in bits.
   uint64_t getFragmentOffsetInBits() const;
 
   /// Return the size of this fragment in bits.
   uint64_t getFragmentSizeInBits() const;
 
+  /// Determine whether this represents a standalone constant value.
+  bool isConstant() const;
+
   typedef ArrayRef<uint64_t>::iterator element_iterator;
   element_iterator elements_begin() const { return getElements().begin(); }
   element_iterator elements_end() const { return getElements().end(); }
 
   /// A lightweight wrapper around an expression operand.
   ///
   /// TODO: Store arguments directly and change \a DIExpression to store a
   /// range of these.
class DIGlobalVariable : public DIVariable {
 
   DIGlobalVariable(LLVMContext &C, StorageType Storage, unsigned Line,
                    bool IsLocalToUnit, bool IsDefinition, uint32_t AlignInBits,
                    ArrayRef<Metadata *> Ops)
       : DIVariable(C, DIGlobalVariableKind, Storage, Line, Ops, AlignInBits),
         IsLocalToUnit(IsLocalToUnit), IsDefinition(IsDefinition) {}
   ~DIGlobalVariable() = default;
 
-  static DIGlobalVariable *
-  getImpl(LLVMContext &Context, DIScope *Scope, StringRef Name,
-          StringRef LinkageName, DIFile *File, unsigned Line, DITypeRef Type,
-          bool IsLocalToUnit, bool IsDefinition, DIExpression *Expr,
-          DIDerivedType *StaticDataMemberDeclaration, uint32_t AlignInBits,
-          StorageType Storage, bool ShouldCreate = true) {
+  static DIGlobalVariable *getImpl(LLVMContext &Context, DIScope *Scope,
+                                   StringRef Name, StringRef LinkageName,
+                                   DIFile *File, unsigned Line, DITypeRef Type,
+                                   bool IsLocalToUnit, bool IsDefinition,
+                                   DIDerivedType *StaticDataMemberDeclaration,
+                                   uint32_t AlignInBits, StorageType Storage,
+                                   bool ShouldCreate = true) {
     return getImpl(Context, Scope, getCanonicalMDString(Context, Name),
                    getCanonicalMDString(Context, LinkageName), File, Line, Type,
-                   IsLocalToUnit, IsDefinition, Expr,
-                   StaticDataMemberDeclaration, AlignInBits, Storage,
-                   ShouldCreate);
+                   IsLocalToUnit, IsDefinition, StaticDataMemberDeclaration,
+                   AlignInBits, Storage, ShouldCreate);
   }
   static DIGlobalVariable *
   getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name,
           MDString *LinkageName, Metadata *File, unsigned Line, Metadata *Type,
-          bool IsLocalToUnit, bool IsDefinition, Metadata *Expr,
+          bool IsLocalToUnit, bool IsDefinition,
           Metadata *StaticDataMemberDeclaration, uint32_t AlignInBits,
           StorageType Storage, bool ShouldCreate = true);
 
   TempDIGlobalVariable cloneImpl() const {
     return getTemporary(getContext(), getScope(), getName(), getLinkageName(),
                         getFile(), getLine(), getType(), isLocalToUnit(),
-                        isDefinition(), getExpr(),
-                        getStaticDataMemberDeclaration(), getAlignInBits());
+                        isDefinition(), getStaticDataMemberDeclaration(),
+                        getAlignInBits());
   }
 
 public:
   DEFINE_MDNODE_GET(DIGlobalVariable,
                     (DIScope * Scope, StringRef Name, StringRef LinkageName,
                      DIFile *File, unsigned Line, DITypeRef Type,
                      bool IsLocalToUnit, bool IsDefinition,
-                     DIExpression *Expr,
                      DIDerivedType *StaticDataMemberDeclaration,
                      uint32_t AlignInBits),
                     (Scope, Name, LinkageName, File, Line, Type, IsLocalToUnit,
-                     IsDefinition, Expr, StaticDataMemberDeclaration,
-                     AlignInBits))
+                     IsDefinition, StaticDataMemberDeclaration, AlignInBits))
   DEFINE_MDNODE_GET(DIGlobalVariable,
                     (Metadata * Scope, MDString *Name, MDString *LinkageName,
                      Metadata *File, unsigned Line, Metadata *Type,
                      bool IsLocalToUnit, bool IsDefinition,
-                     Metadata *Expr, Metadata *StaticDataMemberDeclaration,
+                     Metadata *StaticDataMemberDeclaration,
                      uint32_t AlignInBits),
                     (Scope, Name, LinkageName, File, Line, Type, IsLocalToUnit,
-                     IsDefinition, Expr, StaticDataMemberDeclaration,
-                     AlignInBits))
+                     IsDefinition, StaticDataMemberDeclaration, AlignInBits))
 
   TempDIGlobalVariable clone() const { return cloneImpl(); }
 
   bool isLocalToUnit() const { return IsLocalToUnit; }
   bool isDefinition() const { return IsDefinition; }
   StringRef getDisplayName() const { return getStringOperand(4); }
   StringRef getLinkageName() const { return getStringOperand(5); }
-  DIExpression *getExpr() const {
-    return cast_or_null<DIExpression>(getRawExpr());
-  }
-  void replaceExpr(DIExpression *E) {
-    replaceOperandWith(6, E);
-  }
   DIDerivedType *getStaticDataMemberDeclaration() const {
     return cast_or_null<DIDerivedType>(getRawStaticDataMemberDeclaration());
   }
 
   MDString *getRawLinkageName() const { return getOperandAs<MDString>(5); }
-  Metadata *getRawExpr() const { return getOperand(6); }
-  Metadata *getRawStaticDataMemberDeclaration() const { return getOperand(7); }
+  Metadata *getRawStaticDataMemberDeclaration() const { return getOperand(6); }
 
   static bool classof(const Metadata *MD) {
     return MD->getMetadataID() == DIGlobalVariableKind;
   }
 };
 
 /// Local variable.
 ///
public:
   Metadata *getRawEntity() const { return getOperand(1); }
   MDString *getRawName() const { return getOperandAs<MDString>(2); }
 
   static bool classof(const Metadata *MD) {
     return MD->getMetadataID() == DIImportedEntityKind;
   }
 };
 
+/// A pair of DIGlobalVariable and DIExpression.
+class DIGlobalVariableExpression : public MDNode {
+  friend class LLVMContextImpl;
+  friend class MDNode;
+
+  DIGlobalVariableExpression(LLVMContext &C, StorageType Storage,
+                             ArrayRef<Metadata *> Ops)
+      : MDNode(C, DIGlobalVariableExpressionKind, Storage, Ops) {}
+  ~DIGlobalVariableExpression() = default;
+
+  static DIGlobalVariableExpression *
+  getImpl(LLVMContext &Context, Metadata *Variable, Metadata *Expression,
+          StorageType Storage, bool ShouldCreate = true);
+
+  TempDIGlobalVariableExpression cloneImpl() const {
+    return getTemporary(getContext(), getVariable(), getExpression());
+  }
+
+public:
+  DEFINE_MDNODE_GET(DIGlobalVariableExpression,
+                    (Metadata * Variable, Metadata *Expression),
+                    (Variable, Expression))
+
+  TempDIGlobalVariableExpression clone() const { return cloneImpl(); }
+
+  Metadata *getRawVariable() const { return getOperand(0); }
+  DIGlobalVariable *getVariable() const {
+    return cast_or_null<DIGlobalVariable>(getRawVariable());
+  }
+  Metadata *getRawExpression() const { return getOperand(1); }
+  DIExpression *getExpression() const {
+    return cast_or_null<DIExpression>(getRawExpression());
+  }
+
+  static bool classof(const Metadata *MD) {
+    return MD->getMetadataID() == DIGlobalVariableExpressionKind;
+  }
+};
+
 /// Macro Info DWARF-like metadata node.
 ///
 /// A metadata node with a DWARF macro info (i.e., a constant named
 /// \c DW_MACINFO_*, defined in llvm/Support/Dwarf.h).  Called \a DIMacroNode
 /// because it's potentially used for non-DWARF output.
 class DIMacroNode : public MDNode {
   friend class LLVMContextImpl;
   friend class MDNode;

include/llvm/IR/GlobalVariable.h

 // variable may have an initial value, which is copied into the executables .data
 // area.  Global Constants are required to have initializers.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_IR_GLOBALVARIABLE_H
 #define LLVM_IR_GLOBALVARIABLE_H
 
+#include "llvm/ADT/PointerUnion.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/ADT/ilist_node.h"
 #include "llvm/IR/GlobalObject.h"
 #include "llvm/IR/OperandTraits.h"
 #include "llvm/IR/Value.h"
 #include <cassert>
 #include <cstddef>
 
 namespace llvm {
 
 class Constant;
-class DIGlobalVariable;
 class Module;
 
 template <typename ValueSubClass> class SymbolTableListTraits;
+class DIGlobalVariable;
+class DIGlobalVariableExpression;
 
 class GlobalVariable : public GlobalObject, public ilist_node<GlobalVariable> {
   friend class SymbolTableListTraits<GlobalVariable>;
 
   bool isConstantGlobal : 1;                   // Is this a global constant?
   bool isExternallyInitializedConstant : 1;    // Is this a global whose value
                                                // can change from its initial
                                                // value before global
public:
   /// and deletes it.
   ///
   void eraseFromParent() override;
 
   /// Drop all references in preparation to destroy the GlobalVariable. This
   /// drops not only the reference to the initializer but also to any metadata.
   void dropAllReferences();
 
-  void addDebugInfo(DIGlobalVariable *GV);
-  void getDebugInfo(SmallVectorImpl<DIGlobalVariable *> &GVs) const;
+  /// Attach a DIGlobalVariableExpression.
+  void addDebugInfo(DIGlobalVariableExpression *GV);
+
+  /// Fill the vector with all debug info attachements.
+  void getDebugInfo(SmallVectorImpl<DIGlobalVariableExpression *> &GVs) const;
 
   // Methods for support type inquiry through isa, cast, and dyn_cast:
   static inline bool classof(const Value *V) {
     return V->getValueID() == Value::GlobalVariableVal;
   }
 };
 
 template <>

include/llvm/IR/Metadata.def

 HANDLE_METADATA_BRANCH(ValueAsMetadata)
 HANDLE_METADATA_LEAF(ConstantAsMetadata)
 HANDLE_METADATA_LEAF(LocalAsMetadata)
 HANDLE_METADATA_LEAF(DistinctMDOperandPlaceholder)
 HANDLE_MDNODE_BRANCH(MDNode)
 HANDLE_MDNODE_LEAF_UNIQUABLE(MDTuple)
 HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DILocation)
 HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIExpression)
+HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIGlobalVariableExpression)
 HANDLE_SPECIALIZED_MDNODE_BRANCH(DINode)
 HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(GenericDINode)
 HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DISubrange)
 HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIEnumerator)
 HANDLE_SPECIALIZED_MDNODE_BRANCH(DIScope)
 HANDLE_SPECIALIZED_MDNODE_BRANCH(DIType)
 HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIBasicType)
 HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIDerivedType)

lib/Analysis/ModuleDebugInfoPrinter.cpp

void ModuleDebugInfoPrinter::print(raw_ostream &O, const Module *M) const {
   for (DISubprogram *S : Finder.subprograms()) {
     O << "Subprogram: " << S->getName();
     printFile(O, S->getFilename(), S->getDirectory(), S->getLine());
     if (!S->getLinkageName().empty())
       O << " ('" << S->getLinkageName() << "')";
     O << '\n';
   }
 
-  for (const DIGlobalVariable *GV : Finder.global_variables()) {
+  for (auto GVU : Finder.global_variables()) {
+    const auto *GV = GVU->getVariable();
     O << "Global variable: " << GV->getName();
     printFile(O, GV->getFilename(), GV->getDirectory(), GV->getLine());
     if (!GV->getLinkageName().empty())
       O << " ('" << GV->getLinkageName() << "')";
     O << '\n';
   }
 
   for (const DIType *T : Finder.types()) {

lib/AsmParser/LLParser.cpp

#undef VISIT_MD_FIELDS
   Result = GET_OR_DISTINCT(DITemplateValueParameter,
                            (Context, tag.Val, name.Val, type.Val, value.Val));
   return false;
 }
 
 /// ParseDIGlobalVariable:
 ///   ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
 ///                         file: !1, line: 7, type: !2, isLocal: false,
-///                         isDefinition: true, variable: i32* @foo,
-///                         declaration: !3, align: 8)
+///                         isDefinition: true, declaration: !3, align: 8)
 bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED)                                    \
   REQUIRED(name, MDStringField, (/* AllowEmpty */ false));                     \
   OPTIONAL(scope, MDField, );                                                  \
   OPTIONAL(linkageName, MDStringField, );                                      \
   OPTIONAL(file, MDField, );                                                   \
   OPTIONAL(line, LineField, );                                                 \
   OPTIONAL(type, MDField, );                                                   \
   OPTIONAL(isLocal, MDBoolField, );                                            \
   OPTIONAL(isDefinition, MDBoolField, (true));                                 \
-  OPTIONAL(expr, MDField, );                                                   \
   OPTIONAL(declaration, MDField, );                                            \
   OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX));
   PARSE_MD_FIELDS();
 #undef VISIT_MD_FIELDS
 
   Result = GET_OR_DISTINCT(DIGlobalVariable,
                            (Context, scope.Val, name.Val, linkageName.Val,
                             file.Val, line.Val, type.Val, isLocal.Val,
-                            isDefinition.Val, expr.Val, declaration.Val,
-                            align.Val));
+                            isDefinition.Val, declaration.Val, align.Val));
   return false;
 }
 
 /// ParseDILocalVariable:
 ///   ::= !DILocalVariable(arg: 7, scope: !0, name: "foo",
 ///                        file: !1, line: 7, type: !2, arg: 2, flags: 7,
 ///                        align: 8)
 ///   ::= !DILocalVariable(scope: !0, name: "foo",
bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
 
   if (ParseToken(lltok::rparen, "expected ')' here"))
     return true;
 
   Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
   return false;
 }
 
+/// ParseDIGlobalVariableExpression:
+///   ::= !DIGlobalVariableExpression(var: !0, expr: !1)
+bool LLParser::ParseDIGlobalVariableExpression(MDNode *&Result,
+                                               bool IsDistinct) {
+#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED)                                    \
+  REQUIRED(var, MDField, );                                                    \
+  OPTIONAL(expr, MDField, );
+  PARSE_MD_FIELDS();
+#undef VISIT_MD_FIELDS
+
+  Result =
+      GET_OR_DISTINCT(DIGlobalVariableExpression, (Context, var.Val, expr.Val));
+  return false;
+}
+
 /// ParseDIObjCProperty:
 ///   ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
 ///                       getter: "getFoo", attributes: 7, type: !2)
 bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
 #define VISIT_MD_FIELDS(OPTIONAL, REQUIRED)                                    \
   OPTIONAL(name, MDStringField, );                                             \
   OPTIONAL(file, MDField, );                                                   \
   OPTIONAL(line, LineField, );                                                 \

lib/Bitcode/Reader/MetadataLoader.cpp

case bitc::METADATA_GLOBAL_VAR: {
           Expr = nullptr;
         }
       }
 
       DIGlobalVariable *DGV = GET_OR_DISTINCT(
           DIGlobalVariable,
           (Context, getMDOrNull(Record[1]), getMDString(Record[2]),
            getMDString(Record[3]), getMDOrNull(Record[4]), Record[5],
-           getDITypeRefOrNull(Record[6]), Record[7], Record[8], Expr,
+           getDITypeRefOrNull(Record[6]), Record[7], Record[8],
            getMDOrNull(Record[10]), AlignInBits));
-      MetadataList.assignValue(DGV, NextMetadataNo++);
 
+      if (Expr || Attach) {
+        auto *DGVE = DIGlobalVariableExpression::getDistinct(Context, DGV, Expr);
+        MetadataList.assignValue(DGVE, NextMetadataNo++);
         if (Attach)
-        Attach->addDebugInfo(DGV);
+          Attach->addDebugInfo(DGVE);
+      } else
+        MetadataList.assignValue(DGV, NextMetadataNo++);
 
       break;
     }
     case bitc::METADATA_LOCAL_VAR: {
       // 10th field is for the obseleted 'inlinedAt:' field.
       if (Record.size() < 8 || Record.size() > 10)
         return error("Invalid record");
 
case bitc::METADATA_EXPRESSION: {
             Elts[N - 3] = dwarf::DW_OP_LLVM_fragment;
 
       MetadataList.assignValue(
           GET_OR_DISTINCT(DIExpression,
                           (Context, makeArrayRef(Record).slice(1))),
           NextMetadataNo++);
       break;
     }
+    case bitc::METADATA_GLOBAL_VAR_EXPR: {
+      if (Record.size() != 3)
+        return error("Invalid record");
+
+      IsDistinct = Record[0];
+      MetadataList.assignValue(GET_OR_DISTINCT(DIGlobalVariableExpression,
+                                               (Context, getMDOrNull(Record[1]),
+                                                getMDOrNull(Record[2]))),
+                               NextMetadataNo++);
+      break;
+    }
     case bitc::METADATA_OBJC_PROPERTY: {
       if (Record.size() != 8)
         return error("Invalid record");
 
       IsDistinct = Record[0];
       MetadataList.assignValue(
           GET_OR_DISTINCT(DIObjCProperty,
                           (Context, getMDString(Record[1]),

lib/Bitcode/Writer/BitcodeWriter.cpp

void writeDITemplateValueParameter(const DITemplateValueParameter *N,
                                      unsigned Abbrev);
   void writeDIGlobalVariable(const DIGlobalVariable *N,
                              SmallVectorImpl<uint64_t> &Record,
                              unsigned Abbrev);
   void writeDILocalVariable(const DILocalVariable *N,
                             SmallVectorImpl<uint64_t> &Record, unsigned Abbrev);
   void writeDIExpression(const DIExpression *N,
                          SmallVectorImpl<uint64_t> &Record, unsigned Abbrev);
+  void writeDIGlobalVariableExpression(const DIGlobalVariableExpression *N,
+                                       SmallVectorImpl<uint64_t> &Record,
+                                       unsigned Abbrev);
   void writeDIObjCProperty(const DIObjCProperty *N,
                            SmallVectorImpl<uint64_t> &Record, unsigned Abbrev);
   void writeDIImportedEntity(const DIImportedEntity *N,
                              SmallVectorImpl<uint64_t> &Record,
                              unsigned Abbrev);
   unsigned createNamedMetadataAbbrev();
   void writeNamedMetadata(SmallVectorImpl<uint64_t> &Record);
   unsigned createMetadataStringsAbbrev();
void ModuleBitcodeWriter::writeDIGlobalVariable(
   Record.push_back(VE.getMetadataOrNullID(N->getScope()));
   Record.push_back(VE.getMetadataOrNullID(N->getRawName()));
   Record.push_back(VE.getMetadataOrNullID(N->getRawLinkageName()));
   Record.push_back(VE.getMetadataOrNullID(N->getFile()));
   Record.push_back(N->getLine());
   Record.push_back(VE.getMetadataOrNullID(N->getType()));
   Record.push_back(N->isLocalToUnit());
   Record.push_back(N->isDefinition());
-  Record.push_back(VE.getMetadataOrNullID(N->getRawExpr()));
+  Record.push_back(/* expr */ 0);
   Record.push_back(VE.getMetadataOrNullID(N->getStaticDataMemberDeclaration()));
   Record.push_back(N->getAlignInBits());
 
   Stream.EmitRecord(bitc::METADATA_GLOBAL_VAR, Record, Abbrev);
   Record.clear();
 }
 
 void ModuleBitcodeWriter::writeDILocalVariable(
void ModuleBitcodeWriter::writeDIExpression(const DIExpression *N,
   const uint64_t HasOpFragmentFlag = 1 << 1;
   Record.push_back((uint64_t)N->isDistinct() | HasOpFragmentFlag);
   Record.append(N->elements_begin(), N->elements_end());
 
   Stream.EmitRecord(bitc::METADATA_EXPRESSION, Record, Abbrev);
   Record.clear();
 }
 
+void ModuleBitcodeWriter::writeDIGlobalVariableExpression(
+    const DIGlobalVariableExpression *N, SmallVectorImpl<uint64_t> &Record,
+    unsigned Abbrev) {
+  Record.push_back(N->isDistinct());
+  Record.push_back(VE.getMetadataOrNullID(N->getVariable()));
+  Record.push_back(VE.getMetadataOrNullID(N->getExpression()));
+  
+  Stream.EmitRecord(bitc::METADATA_GLOBAL_VAR_EXPR, Record, Abbrev);
+  Record.clear();
+}
+
 void ModuleBitcodeWriter::writeDIObjCProperty(const DIObjCProperty *N,
                                               SmallVectorImpl<uint64_t> &Record,
                                               unsigned Abbrev) {
   Record.push_back(N->isDistinct());
   Record.push_back(VE.getMetadataOrNullID(N->getRawName()));
   Record.push_back(VE.getMetadataOrNullID(N->getFile()));
   Record.push_back(N->getLine());
   Record.push_back(VE.getMetadataOrNullID(N->getRawSetterName()));

lib/CodeGen/AsmPrinter/CodeViewDebug.cpp

for (const std::pair<std::string, codeview::TypeIndex> &UDT : UDTs) {
     OS.EmitIntValue(UDT.second.getIndex(), 4);
 
     emitNullTerminatedSymbolName(OS, UDT.first);
     OS.EmitLabel(UDTRecordEnd);
   }
 }
 
 void CodeViewDebug::emitDebugInfoForGlobals() {
-  DenseMap<const DIGlobalVariable *, const GlobalVariable *> GlobalMap;
+  DenseMap<const DIGlobalVariableExpression *, const GlobalVariable *>
+      GlobalMap;
   for (const GlobalVariable &GV : MMI->getModule()->globals()) {
-    SmallVector<MDNode *, 1> MDs;
-    GV.getMetadata(LLVMContext::MD_dbg, MDs);
-    for (MDNode *MD : MDs)
-      GlobalMap[cast<DIGlobalVariable>(MD)] = &GV;
+    SmallVector<DIGlobalVariableExpression *, 1> GVEs;
+    GV.getDebugInfo(GVEs);
+    for (const auto *GVE : GVEs)
+      GlobalMap[GVE] = &GV;
   }
 
   NamedMDNode *CUs = MMI->getModule()->getNamedMetadata("llvm.dbg.cu");
   for (const MDNode *Node : CUs->operands()) {
     const auto *CU = cast<DICompileUnit>(Node);
 
     // First, emit all globals that are not in a comdat in a single symbol
     // substream. MSVC doesn't like it if the substream is empty, so only open
     // it if we have at least one global to emit.
     switchToDebugSectionForSymbol(nullptr);
     MCSymbol *EndLabel = nullptr;
-    for (const DIGlobalVariable *G : CU->getGlobalVariables()) {
-      if (const auto *GV = GlobalMap.lookup(G))
+    for (const auto *GVE : CU->getGlobalVariables()) {
+      if (const auto *GV = GlobalMap.lookup(GVE))
         if (!GV->hasComdat() && !GV->isDeclarationForLinker()) {
           if (!EndLabel) {
             OS.AddComment("Symbol subsection for globals");
             EndLabel = beginCVSubsection(ModuleSubstreamKind::Symbols);
           }
-          emitDebugInfoForGlobal(G, GV, Asm->getSymbol(GV));
+          // FIXME: emitDebugInfoForGlobal() doesn't handle DIExpressions.
+          emitDebugInfoForGlobal(GVE->getVariable(), GV, Asm->getSymbol(GV));
         }
     }
     if (EndLabel)
       endCVSubsection(EndLabel);
 
     // Second, emit each global that is in a comdat into its own .debug$S
     // section along with its own symbol substream.
-    for (const DIGlobalVariable *G : CU->getGlobalVariables()) {
-      if (const auto *GV = GlobalMap.lookup(G)) {
+    for (const auto *GVE : CU->getGlobalVariables()) {
+      if (const auto *GV = GlobalMap.lookup(GVE)) {
         if (GV->hasComdat()) {
           MCSymbol *GVSym = Asm->getSymbol(GV);
           OS.AddComment("Symbol subsection for " +
                         Twine(GlobalValue::getRealLinkageName(GV->getName())));
           switchToDebugSectionForSymbol(GVSym);
           EndLabel = beginCVSubsection(ModuleSubstreamKind::Symbols);
-          emitDebugInfoForGlobal(G, GV, GVSym);
+          // FIXME: emitDebugInfoForGlobal() doesn't handle DIExpressions.
+          emitDebugInfoForGlobal(GVE->getVariable(), GV, GVSym);
           endCVSubsection(EndLabel);
         }
       }
     }
   }
 }
 
 void CodeViewDebug::emitDebugInfoForRetainedTypes() {

lib/CodeGen/AsmPrinter/DwarfCompileUnit.h

DwarfCompileUnit *getSkeleton() const {
     return Skeleton;
   }
 
   void initStmtList();
 
   /// Apply the DW_AT_stmt_list from this compile unit to the specified DIE.
   void applyStmtList(DIE &D);
 
-  /// getOrCreateGlobalVariableDIE - get or create global variable DIE.
+  typedef std::pair<const GlobalVariable *, const DIExpression *> GlobalExpr;
+  /// Get or create global variable DIE.
   DIE *getOrCreateGlobalVariableDIE(const DIGlobalVariable *GV,
-                                    const GlobalVariable *Global);
+                                    ArrayRef<GlobalExpr> GlobalExprs);
 
   /// addLabelAddress - Add a dwarf label attribute data and value using
   /// either DW_FORM_addr or DW_FORM_GNU_addr_index.
   void addLabelAddress(DIE &Die, dwarf::Attribute Attribute,
                        const MCSymbol *Label);
 
   /// addLocalLabelAddress - Add a dwarf label attribute data and value using
   /// DW_FORM_addr only.

lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp

unsigned DwarfCompileUnit::getOrCreateSourceID(StringRef FileName,
 
   // FIXME: add a better feature test than hasRawTextSupport. Even better,
   // extend .file to support this.
   return Asm->OutStreamer->EmitDwarfFileDirective(
       0, DirName, FileName,
       Asm->OutStreamer->hasRawTextSupport() ? 0 : getUniqueID());
 }
 
-/// getOrCreateGlobalVariableDIE - get or create global variable DIE.
 DIE *DwarfCompileUnit::getOrCreateGlobalVariableDIE(
-    const DIGlobalVariable *GV, const GlobalVariable *Global) {
+    const DIGlobalVariable *GV, ArrayRef<GlobalExpr> GlobalExprs) {
   // Check for pre-existence.
   if (DIE *Die = getDIE(GV))
     return Die;
 
   assert(GV);
 
   auto *GVContext = GV->getScope();
   auto *GTy = DD->resolve(GV->getType());
else
     addGlobalName(GV->getName(), *VariableDIE, DeclContext);
 
   if (uint32_t AlignInBytes = GV->getAlignInBytes())
     addUInt(*VariableDIE, dwarf::DW_AT_alignment, dwarf::DW_FORM_udata,
             AlignInBytes);
 
   // Add location.
   bool addToAccelTable = false;
-
-  DIExpression *Expr = GV->getExpr();
-
+  DIELoc *Loc = nullptr;
+  std::unique_ptr<DIEDwarfExpression> DwarfExpr;
+  bool AllConstant =
+      std::all_of(GlobalExprs.begin(), GlobalExprs.end(), [&](const GlobalExpr GE) {
+        const DIExpression *Expr = GE.second;
+        return Expr && Expr->isConstant();
+      });
+
+  for (const auto &GE : GlobalExprs) {
+    const GlobalVariable *Global = GE.first;
+    const DIExpression *Expr = GE.second;
     // For compatibility with DWARF 3 and earlier,
     // DW_AT_location(DW_OP_constu, X, DW_OP_stack_value) becomes
     // DW_AT_const_value(X).
-  if (Expr && Expr->getNumElements() == 3 &&
-      Expr->getElement(0) == dwarf::DW_OP_constu &&
-      Expr->getElement(2) == dwarf::DW_OP_stack_value) {
+    if (GlobalExprs.size() == 1 && Expr && Expr->isConstant()) {
       addConstantValue(*VariableDIE, /*Unsigned=*/true, Expr->getElement(1));
-    // We cannot describe the location of dllimport'd variables: the computation
-    // of their address requires loads from the IAT.
-  } else if (!Global || !Global->hasDLLImportStorageClass()) {
-    DIELoc *Loc = new (DIEValueAllocator) DIELoc;
-    if (Global) {
+      // We cannot describe the location of dllimport'd variables: the
+      // computation of their address requires loads from the IAT.
+    } else if ((Global && !Global->hasDLLImportStorageClass()) || AllConstant) {
+      if (!Loc) {
+        Loc = new (DIEValueAllocator) DIELoc;
+        DwarfExpr = llvm::make_unique<DIEDwarfExpression>(*Asm, *this, *Loc);
+      }
       addToAccelTable = true;
+      if (Global) {
         const MCSymbol *Sym = Asm->getSymbol(Global);
         if (Global->isThreadLocal()) {
           if (Asm->TM.Options.EmulatedTLS) {
             // TODO: add debug info for emulated thread local mode.
           } else {
             // FIXME: Make this work with -gsplit-dwarf.
             unsigned PointerSize = Asm->getDataLayout().getPointerSize();
             assert((PointerSize == 4 || PointerSize == 8) &&
                    "Add support for other sizes if necessary");
             // Based on GCC's support for TLS:
             if (!DD->useSplitDwarf()) {
               // 1) Start with a constNu of the appropriate pointer size
-            addUInt(*Loc, dwarf::DW_FORM_data1, PointerSize == 4
-                                                    ? dwarf::DW_OP_const4u
-                                                    : dwarf::DW_OP_const8u);
+              addUInt(*Loc, dwarf::DW_FORM_data1,
+                      PointerSize == 4 ? dwarf::DW_OP_const4u
               // 2) containing the (relocated) offset of the TLS variable
               //    within the module's TLS block.
               addExpr(*Loc, dwarf::DW_FORM_udata,
                       Asm->getObjFileLowering().getDebugThreadLocalSymbol(Sym));
             } else {
               addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_const_index);
               addUInt(*Loc, dwarf::DW_FORM_udata,
                       DD->getAddressPool().getIndex(Sym, /* TLS */ true));
             }
             // 3) followed by an OP to make the debugger do a TLS lookup.
             addUInt(*Loc, dwarf::DW_FORM_data1,
                     DD->useGNUTLSOpcode() ? dwarf::DW_OP_GNU_push_tls_address
                                           : dwarf::DW_OP_form_tls_address);
           }
         } else {
           DD->addArangeLabel(SymbolCU(this, Sym));
           addOpAddress(*Loc, Sym);
         }
-
+      }
       if (Expr) {
-        DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
-        DwarfExpr.addFragmentOffset(Expr);
-        DwarfExpr.AddExpression(Expr);
-        DwarfExpr.finalize();
+        DwarfExpr->addFragmentOffset(Expr);
+        DwarfExpr->AddExpression(Expr);
       }
     }
-
-    addBlock(*VariableDIE, dwarf::DW_AT_location, Loc);
+  }
+  if (Loc)
+    addBlock(*VariableDIE, dwarf::DW_AT_location, DwarfExpr->finalize());
 
-    if (DD->useAllLinkageNames())
-      addLinkageName(*VariableDIE, GV->getLinkageName());
-  }
 
   if (addToAccelTable) {
     DD->addAccelName(GV->getName(), *VariableDIE);
 
     // If the linkage name is different than the name, go ahead and output
     // that as well into the name table.
     if (GV->getLinkageName() != "" && GV->getName() != GV->getLinkageName())
       DD->addAccelName(GV->getLinkageName(), *VariableDIE);
if (DVInsn->getOperand(0).isReg()) {
       auto *Expr = DV.getSingleExpression();
       if (Expr && Expr->getNumElements()) {
         DIELoc *Loc = new (DIEValueAllocator) DIELoc;
         DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
         // If there is an expression, emit raw unsigned bytes.
         DwarfExpr.addFragmentOffset(Expr);
         DwarfExpr.AddUnsignedConstant(DVInsn->getOperand(0).getImm());
         DwarfExpr.AddExpression(Expr);
-        DwarfExpr.finalize();
-        addBlock(*VariableDie, dwarf::DW_AT_location, Loc);
+        addBlock(*VariableDie, dwarf::DW_AT_location, DwarfExpr.finalize());
       } else
         addConstantValue(*VariableDie, DVInsn->getOperand(0), DV.getType());
     } else if (DVInsn->getOperand(0).isFPImm())
       addConstantFPValue(*VariableDie, DVInsn->getOperand(0));
     else if (DVInsn->getOperand(0).isCImm())
       addConstantValue(*VariableDie, DVInsn->getOperand(0).getCImm(),
                        DV.getType());
 
for (auto FI : DV.getFrameIndex()) {
     int Offset = TFI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
     assert(Expr != DV.getExpression().end() && "Wrong number of expressions");
     DwarfExpr.addFragmentOffset(*Expr);
     DwarfExpr.AddMachineRegIndirect(*Asm->MF->getSubtarget().getRegisterInfo(),
                                     FrameReg, Offset);
     DwarfExpr.AddExpression(*Expr);
     ++Expr;
   }
-  DwarfExpr.finalize();
-  addBlock(*VariableDie, dwarf::DW_AT_location, Loc);
+  addBlock(*VariableDie, dwarf::DW_AT_location, DwarfExpr.finalize());
 
   return VariableDie;
 }
 
 DIE *DwarfCompileUnit::constructVariableDIE(DbgVariable &DV,
                                             const LexicalScope &Scope,
                                             DIE *&ObjectPointer) {
   auto Var = constructVariableDIE(DV, Scope.isAbstractScope());
if (auto *NS = dyn_cast<DINamespace>(Entity))
     EntityDie = getOrCreateNameSpace(NS);
   else if (auto *M = dyn_cast<DIModule>(Entity))
     EntityDie = getOrCreateModule(M);
   else if (auto *SP = dyn_cast<DISubprogram>(Entity))
     EntityDie = getOrCreateSubprogramDIE(SP);
   else if (auto *T = dyn_cast<DIType>(Entity))
     EntityDie = getOrCreateTypeDIE(T);
   else if (auto *GV = dyn_cast<DIGlobalVariable>(Entity))
-    EntityDie = getOrCreateGlobalVariableDIE(GV, nullptr);
+    EntityDie = getOrCreateGlobalVariableDIE(GV, {});
   else
     EntityDie = getDIE(Entity);
   assert(EntityDie);
   addSourceLine(*IMDie, Module->getLine(), Module->getScope()->getFilename(),
                 Module->getScope()->getDirectory());
   addDIEEntry(*IMDie, dwarf::DW_AT_import, *EntityDie);
   StringRef Name = Module->getName();
   if (!Name.empty())
     addString(*IMDie, dwarf::DW_AT_name, Name);
 
void DwarfCompileUnit::addAddress(DIE &Die, dwarf::Attribute Attribute,
   else
     validReg =
         Expr.AddMachineRegIndirect(*Asm->MF->getSubtarget().getRegisterInfo(),
                                    Location.getReg(), Location.getOffset());
 
   if (!validReg)
     return;
 
-  Expr.finalize();
-
   // Now attach the location information to the DIE.
-  addBlock(Die, Attribute, Loc);
+  addBlock(Die, Attribute, Expr.finalize());
 }
 
 /// Start with the address based on the location provided, and generate the
 /// DWARF information necessary to find the actual variable given the extra
 /// address information encoded in the DbgVariable, starting from the starting
 /// location.  Add the DWARF information to the die.
 void DwarfCompileUnit::addComplexAddress(const DbgVariable &DV, DIE &Die,
                                          dwarf::Attribute Attribute,

lib/CodeGen/AsmPrinter/DwarfDebug.cpp

void DwarfDebug::beginModule() {
 
   const Module *M = MMI->getModule();
 
   unsigned NumDebugCUs = std::distance(M->debug_compile_units_begin(),
                                        M->debug_compile_units_end());
   // Tell MMI whether we have debug info.
   MMI->setDebugInfoAvailability(NumDebugCUs > 0);
   SingleCU = NumDebugCUs == 1;
-
-  DenseMap<DIGlobalVariable *, const GlobalVariable *> GVMap;
+  DenseMap<DIGlobalVariable *, SmallVector<DwarfCompileUnit::GlobalExpr, 1>>
+      GVMap;
   for (const GlobalVariable &Global : M->globals()) {
-    SmallVector<DIGlobalVariable *, 1> GVs;
+    SmallVector<DIGlobalVariableExpression *, 1> GVs;
     Global.getDebugInfo(GVs);
-    for (auto &GV : GVs)
-      GVMap[GV] = &Global;
+    for (auto *GVE : GVs)
+      GVMap[GVE->getVariable()].push_back({&Global, GVE->getExpression()});
   }
 
   for (DICompileUnit *CUNode : M->debug_compile_units()) {
     DwarfCompileUnit &CU = constructDwarfCompileUnit(CUNode);
     for (auto *IE : CUNode->getImportedEntities())
       CU.addImportedEntity(IE);
-    for (auto *GV : CUNode->getGlobalVariables())
+
+    // Global Variables.
+    for (auto *GVE : CUNode->getGlobalVariables())
+      GVMap[GVE->getVariable()].push_back({nullptr, GVE->getExpression()});
+    DenseSet<DIGlobalVariable *> Processed;
+    for (auto *GVE : CUNode->getGlobalVariables()) {
+      DIGlobalVariable *GV = GVE->getVariable();
+      if (Processed.insert(GV).second)
         CU.getOrCreateGlobalVariableDIE(GV, GVMap.lookup(GV));
+    }
+
     for (auto *Ty : CUNode->getEnumTypes()) {
       // The enum types array by design contains pointers to
       // MDNodes rather than DIRefs. Unique them here.
       CU.getOrCreateTypeDIE(cast<DIType>(Ty));
     }
     for (auto *Ty : CUNode->getRetainedTypes()) {
       // The retained types array by design contains pointers to
       // MDNodes rather than DIRefs. Unique them here.

lib/CodeGen/AsmPrinter/DwarfExpression.h

 
 public:
   DIEDwarfExpression(const AsmPrinter &AP, DwarfUnit &DU, DIELoc &DIE);
   void EmitOp(uint8_t Op, const char *Comment = nullptr) override;
   void EmitSigned(int64_t Value) override;
   void EmitUnsigned(uint64_t Value) override;
   bool isFrameRegister(const TargetRegisterInfo &TRI,
                        unsigned MachineReg) override;
+  DIELoc *finalize() {
+    DwarfExpression::finalize();
+    return ¨
+  }
 };
 }
 
 #endif

lib/IR/AsmWriter.cpp

static void writeDIGlobalVariable(raw_ostream &Out, const DIGlobalVariable *N,
   Printer.printString("name", N->getName());
   Printer.printString("linkageName", N->getLinkageName());
   Printer.printMetadata("scope", N->getRawScope(), /* ShouldSkipNull */ false);
   Printer.printMetadata("file", N->getRawFile());
   Printer.printInt("line", N->getLine());
   Printer.printMetadata("type", N->getRawType());
   Printer.printBool("isLocal", N->isLocalToUnit());
   Printer.printBool("isDefinition", N->isDefinition());
-  Printer.printMetadata("expr", N->getExpr());
   Printer.printMetadata("declaration", N->getRawStaticDataMemberDeclaration());
   Printer.printInt("align", N->getAlignInBits());
   Out << ")";
 }
 
 static void writeDILocalVariable(raw_ostream &Out, const DILocalVariable *N,
                                  TypePrinting *TypePrinter,
                                  SlotTracker *Machine, const Module *Context) {
if (N->isValid()) {
     }
   } else {
     for (const auto &I : N->getElements())
       Out << FS << I;
   }
   Out << ")";
 }
 
+static void writeDIGlobalVariableExpression(raw_ostream &Out,
+                                            const DIGlobalVariableExpression *N,
+                                            TypePrinting *TypePrinter,
+                                            SlotTracker *Machine,
+                                            const Module *Context) {
+  Out << "!DIGlobalVariableExpression(";
+  MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
+  Printer.printMetadata("var", N->getVariable());
+  Printer.printMetadata("expr", N->getExpression());
+  Out << ")";
+}
+
 static void writeDIObjCProperty(raw_ostream &Out, const DIObjCProperty *N,
                                 TypePrinting *TypePrinter, SlotTracker *Machine,
                                 const Module *Context) {
   Out << "!DIObjCProperty(";
   MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
   Printer.printString("name", N->getName());
   Printer.printMetadata("file", N->getRawFile());
   Printer.printInt("line", N->getLine());

lib/IR/DIBuilder.cpp

void DIBuilder::finalize() {
   for (auto *SP : SPs)
     resolveVariables(SP);
   for (auto *N : RetainValues)
     if (auto *SP = dyn_cast<DISubprogram>(N))
       resolveVariables(SP);
 
   if (!AllGVs.empty())
     CUNode->replaceGlobalVariables(MDTuple::get(VMContext, AllGVs));
 
   if (!AllImportedModules.empty())
     CUNode->replaceImportedEntities(MDTuple::get(
         VMContext, SmallVector<Metadata *, 16>(AllImportedModules.begin(),
                                                AllImportedModules.end())));
 
   // Now that all temp nodes have been replaced or deleted, resolve remaining
   // cycles.
   for (const auto &N : UnresolvedNodes)
     if (N && !N->isResolved())
       N->resolveCycles();
   UnresolvedNodes.clear();

 #ifndef NDEBUG
   if (auto *CT =
           dyn_cast_or_null<DICompositeType>(getNonCompileUnitScope(Context)))
     assert(CT->getIdentifier().empty() &&
            "Context of a global variable should not be a type with identifier");
 #endif
 }
 
-DIGlobalVariable *DIBuilder::createGlobalVariable(
+DIGlobalVariableExpression *DIBuilder::createGlobalVariable(
     DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *F,
-    unsigned LineNumber, DIType *Ty, bool isLocalToUnit,
-    DIExpression *Expr, MDNode *Decl, uint32_t AlignInBits) {
+    unsigned LineNumber, DIType *Ty, bool isLocalToUnit, DIExpression *Expr,
+    MDNode *Decl, uint32_t AlignInBits) {
   checkGlobalVariableScope(Context);
 
-  auto *N = DIGlobalVariable::getDistinct(
+  auto *GV = DIGlobalVariable::getDistinct(
       VMContext, cast_or_null<DIScope>(Context), Name, LinkageName, F,
-      LineNumber, Ty, isLocalToUnit, true, Expr,
-      cast_or_null<DIDerivedType>(Decl), AlignInBits);
+      LineNumber, Ty, isLocalToUnit, true, cast_or_null<DIDerivedType>(Decl),
+      AlignInBits);
+  auto *N = DIGlobalVariableExpression::get(VMContext, GV, Expr);
   AllGVs.push_back(N);
   return N;
 }
 
 DIGlobalVariable *DIBuilder::createTempGlobalVariableFwdDecl(
     DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *F,
-    unsigned LineNumber, DIType *Ty, bool isLocalToUnit,
-    DIExpression *Expr, MDNode *Decl, uint32_t AlignInBits) {
+    unsigned LineNumber, DIType *Ty, bool isLocalToUnit, MDNode *Decl,
+    uint32_t AlignInBits) {
   checkGlobalVariableScope(Context);
 
   return DIGlobalVariable::getTemporary(
              VMContext, cast_or_null<DIScope>(Context), Name, LinkageName, F,
-             LineNumber, Ty, isLocalToUnit, false, Expr,
+             LineNumber, Ty, isLocalToUnit, false,
              cast_or_null<DIDerivedType>(Decl), AlignInBits)
       .release();
 }
 
 static DILocalVariable *createLocalVariable(
     LLVMContext &VMContext,
     DenseMap<MDNode *, SmallVector<TrackingMDNodeRef, 1>> &PreservedVariables,
     DIScope *Scope, StringRef Name, unsigned ArgNo, DIFile *File,

lib/IR/DebugInfo.cpp

void DebugInfoFinder::reset() {
   GVs.clear();
   TYs.clear();
   Scopes.clear();
   NodesSeen.clear();
 }
 
 void DebugInfoFinder::processModule(const Module &M) {
   for (auto *CU : M.debug_compile_units()) {
     addCompileUnit(CU);
-    for (auto *DIG : CU->getGlobalVariables()) {
-      if (addGlobalVariable(DIG)) {
-        processScope(DIG->getScope());
-        processType(DIG->getType().resolve());
-      }
+    for (auto DIG : CU->getGlobalVariables()) {
+      if (!addGlobalVariable(DIG))
+        continue;
+      auto *GV = DIG->getVariable();
+      processScope(GV->getScope());
+      processType(GV->getType().resolve());
     }
     for (auto *ET : CU->getEnumTypes())
       processType(ET);
     for (auto *RT : CU->getRetainedTypes())
       if (auto *T = dyn_cast<DIType>(RT))
         processType(T);
       else
         processSubprogram(cast<DISubprogram>(RT));
if (!CU)
     return false;
   if (!NodesSeen.insert(CU).second)
     return false;
 
   CUs.push_back(CU);
   return true;
 }
 
-bool DebugInfoFinder::addGlobalVariable(DIGlobalVariable *DIG) {
-  if (!DIG)
-    return false;
-
+bool DebugInfoFinder::addGlobalVariable(DIGlobalVariableExpression *DIG) {
   if (!NodesSeen.insert(DIG).second)
     return false;
 
   GVs.push_back(DIG);
   return true;
 }
 
 bool DebugInfoFinder::addSubprogram(DISubprogram *SP) {

lib/IR/DebugInfoMetadata.cpp

DITemplateValueParameter *DITemplateValueParameter::getImpl(
   Metadata *Ops[] = {Name, Type, Value};
   DEFINE_GETIMPL_STORE(DITemplateValueParameter, (Tag), Ops);
 }
 
 DIGlobalVariable *
 DIGlobalVariable::getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name,
                           MDString *LinkageName, Metadata *File, unsigned Line,
                           Metadata *Type, bool IsLocalToUnit, bool IsDefinition,
-                          Metadata *Variable,
                           Metadata *StaticDataMemberDeclaration,
-                          uint32_t AlignInBits,
-                          StorageType Storage, bool ShouldCreate) {
+                          uint32_t AlignInBits, StorageType Storage,
+                          bool ShouldCreate) {
   assert(isCanonical(Name) && "Expected canonical MDString");
   assert(isCanonical(LinkageName) && "Expected canonical MDString");
   DEFINE_GETIMPL_LOOKUP(DIGlobalVariable,
                         (Scope, Name, LinkageName, File, Line, Type,
-                         IsLocalToUnit, IsDefinition, Variable,
+                         IsLocalToUnit, IsDefinition,
                          StaticDataMemberDeclaration, AlignInBits));
-  Metadata *Ops[] = {Scope, Name,        File,     Type,
-                     Name,  LinkageName, Variable, StaticDataMemberDeclaration};
+  Metadata *Ops[] = {
+      Scope, Name, File, Type, Name, LinkageName, StaticDataMemberDeclaration};
   DEFINE_GETIMPL_STORE(DIGlobalVariable,
                        (Line, IsLocalToUnit, IsDefinition, AlignInBits),
                        Ops);
 }
 
 DILocalVariable *DILocalVariable::getImpl(LLVMContext &Context, Metadata *Scope,
                                           MDString *Name, Metadata *File,
                                           unsigned Line, Metadata *Type,
for (auto I = expr_op_begin(), E = expr_op_end(); I != E; ++I) {
     if (I->get() + I->getSize() > E->get())
       return false;
 
     // Check that the operand is valid.
     switch (I->getOp()) {
     default:
       return false;
     case dwarf::DW_OP_LLVM_fragment:
-    case dwarf::DW_OP_stack_value:
-      // We only support fragment and stack value expressions which appear at
-      // the end.
+      // A fragment operator must appear at the end.
       return I->get() + I->getSize() == E->get();
+    case dwarf::DW_OP_stack_value: {
+      // Must be the last one or followed by a DW_OP_LLVM_fragment.
+      if (I->get() + I->getSize() == E->get())
+        break;
+      auto J = I;
+      if ((++J)->getOp() != dwarf::DW_OP_LLVM_fragment)
+        return false;
+      break;
+    }
     case dwarf::DW_OP_constu:
     case dwarf::DW_OP_plus:
     case dwarf::DW_OP_minus:
     case dwarf::DW_OP_deref:
       break;
     }
   }
   return true;
uint64_t DIExpression::getFragmentOffsetInBits() const {
   return getElement(getNumElements() - 2);
 }
 
 uint64_t DIExpression::getFragmentSizeInBits() const {
   assert(isFragment() && "Expected fragment");
   return getElement(getNumElements() - 1);
 }
 
+bool DIExpression::isConstant() const {
+  // Recognize DW_OP_constu C DW_OP_stack_value (DW_OP_LLVM_fragment Len Ofs)?.
+  if (getNumElements() != 3 && getNumElements() != 6)
+    return false;
+  if (getElement(0) != dwarf::DW_OP_constu ||
+      getElement(2) != dwarf::DW_OP_stack_value)
+    return false;
+  if (getNumElements() == 6 && getElement(3) != dwarf::DW_OP_LLVM_fragment)
+    return false;
+  return true;
+}
+
+DIGlobalVariableExpression *
+DIGlobalVariableExpression::getImpl(LLVMContext &Context, Metadata *Variable,
+                                    Metadata *Expression, StorageType Storage,
+                                    bool ShouldCreate) {
+  DEFINE_GETIMPL_LOOKUP(DIGlobalVariableExpression, (Variable, Expression));
+  Metadata *Ops[] = {Variable, Expression};
+  DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIGlobalVariableExpression, Ops);
+}
+
 DIObjCProperty *DIObjCProperty::getImpl(
     LLVMContext &Context, MDString *Name, Metadata *File, unsigned Line,
     MDString *GetterName, MDString *SetterName, unsigned Attributes,
     Metadata *Type, StorageType Storage, bool ShouldCreate) {
   assert(isCanonical(Name) && "Expected canonical MDString");
   assert(isCanonical(GetterName) && "Expected canonical MDString");
   assert(isCanonical(SetterName) && "Expected canonical MDString");
   DEFINE_GETIMPL_LOOKUP(DIObjCProperty, (Name, File, Line, GetterName,

lib/IR/LLVMContextImpl.h

template <> struct MDNodeKeyImpl<DIGlobalVariable> {
   Metadata *Scope;
   MDString *Name;
   MDString *LinkageName;
   Metadata *File;
   unsigned Line;
   Metadata *Type;
   bool IsLocalToUnit;
   bool IsDefinition;
-  Metadata *Expr;
   Metadata *StaticDataMemberDeclaration;
   uint32_t AlignInBits;
 
   MDNodeKeyImpl(Metadata *Scope, MDString *Name, MDString *LinkageName,
                 Metadata *File, unsigned Line, Metadata *Type,
                 bool IsLocalToUnit, bool IsDefinition,
-                Metadata *Expr, Metadata *StaticDataMemberDeclaration,
-                uint32_t AlignInBits)
+                Metadata *StaticDataMemberDeclaration, uint32_t AlignInBits)
       : Scope(Scope), Name(Name), LinkageName(LinkageName), File(File),
         Line(Line), Type(Type), IsLocalToUnit(IsLocalToUnit),
-        IsDefinition(IsDefinition), Expr(Expr),
+        IsDefinition(IsDefinition),
         StaticDataMemberDeclaration(StaticDataMemberDeclaration),
         AlignInBits(AlignInBits) {}
   MDNodeKeyImpl(const DIGlobalVariable *N)
       : Scope(N->getRawScope()), Name(N->getRawName()),
         LinkageName(N->getRawLinkageName()), File(N->getRawFile()),
         Line(N->getLine()), Type(N->getRawType()),
         IsLocalToUnit(N->isLocalToUnit()), IsDefinition(N->isDefinition()),
-        Expr(N->getRawExpr()),
         StaticDataMemberDeclaration(N->getRawStaticDataMemberDeclaration()),
         AlignInBits(N->getAlignInBits()) {}
 
   bool isKeyOf(const DIGlobalVariable *RHS) const {
     return Scope == RHS->getRawScope() && Name == RHS->getRawName() &&
            LinkageName == RHS->getRawLinkageName() &&
            File == RHS->getRawFile() && Line == RHS->getLine() &&
            Type == RHS->getRawType() && IsLocalToUnit == RHS->isLocalToUnit() &&
            IsDefinition == RHS->isDefinition() &&
-           Expr == RHS->getRawExpr() &&
            StaticDataMemberDeclaration ==
                RHS->getRawStaticDataMemberDeclaration() &&
            AlignInBits == RHS->getAlignInBits();
   }
   unsigned getHashValue() const {
     // We do not use AlignInBits in hashing function here on purpose:
     // in most cases this param for local variable is zero (for function param
     // it is always zero). This leads to lots of hash collisions and errors on
     // cases with lots of similar variables.
     // clang/test/CodeGen/debug-info-257-args.c is an example of this problem,
     // generated IR is random for each run and test fails with Align included.
     // TODO: make hashing work fine with such situations
     return hash_combine(Scope, Name, LinkageName, File, Line, Type,
-                        IsLocalToUnit, IsDefinition, /* AlignInBits, */ Expr,
+                        IsLocalToUnit, IsDefinition, /* AlignInBits, */
                         StaticDataMemberDeclaration);
   }
 };
 
 template <> struct MDNodeKeyImpl<DILocalVariable> {
   Metadata *Scope;
   MDString *Name;
   Metadata *File;
template <> struct MDNodeKeyImpl<DIExpression> {
   bool isKeyOf(const DIExpression *RHS) const {
     return Elements == RHS->getElements();
   }
   unsigned getHashValue() const {
     return hash_combine_range(Elements.begin(), Elements.end());
   }
 };
 
+template <> struct MDNodeKeyImpl<DIGlobalVariableExpression> {
+  Metadata *Variable;
+  Metadata *Expression;
+
+  MDNodeKeyImpl(Metadata *Variable, Metadata *Expression)
+      : Variable(Variable), Expression(Expression) {}
+  MDNodeKeyImpl(const DIGlobalVariableExpression *N)
+      : Variable(N->getRawVariable()), Expression(N->getRawExpression()) {}
+
+  bool isKeyOf(const DIGlobalVariableExpression *RHS) const {
+    return Variable == RHS->getRawVariable() &&
+           Expression == RHS->getRawExpression();
+  }
+  unsigned getHashValue() const { return hash_combine(Variable, Expression); }
+};
+
 template <> struct MDNodeKeyImpl<DIObjCProperty> {
   MDString *Name;
   Metadata *File;
   unsigned Line;
   MDString *GetterName;
   MDString *SetterName;
   unsigned Attributes;
   Metadata *Type;

lib/IR/Metadata.cpp

if (Offset != 0 && MD.first == LLVMContext::MD_type) {
           OffsetConst->getType(), OffsetConst->getValue() + Offset));
       addMetadata(LLVMContext::MD_type,
                   *MDNode::get(getContext(), {NewOffsetMD, TypeId}));
       continue;
     }
     // If an offset adjustment was specified we need to modify the DIExpression
     // to prepend the adjustment:
     // !DIExpression(DW_OP_plus, Offset, [original expr])
+    auto *Attachment = MD.second;
     if (Offset != 0 && MD.first == LLVMContext::MD_dbg) {
-      DIGlobalVariable *GV = cast<DIGlobalVariable>(MD.second);
-      DIExpression *E = GV->getExpr();
+      DIGlobalVariable *GV = dyn_cast<DIGlobalVariable>(Attachment);
+      DIExpression *E = nullptr;
+      if (!GV) {
+        auto *GVE = cast<DIGlobalVariableExpression>(Attachment);
+        GV = GVE->getVariable();
+        E = GVE->getExpression();
+      }
       ArrayRef<uint64_t> OrigElements;
       if (E)
         OrigElements = E->getElements();
       std::vector<uint64_t> Elements(OrigElements.size() + 2);
       Elements[0] = dwarf::DW_OP_plus;
       Elements[1] = Offset;
       std::copy(OrigElements.begin(), OrigElements.end(), Elements.begin() + 2);
-      GV->replaceExpr(DIExpression::get(getContext(), Elements));
+      E = DIExpression::get(getContext(), Elements);
+      Attachment = DIGlobalVariableExpression::get(getContext(), GV, E);
     }
-    addMetadata(MD.first, *MD.second);
+    addMetadata(MD.first, *Attachment);
   }
 }
 
 void GlobalObject::addTypeMetadata(unsigned Offset, Metadata *TypeID) {
   addMetadata(
       LLVMContext::MD_type,
       *MDTuple::get(getContext(),
                     {llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
                          Type::getInt64Ty(getContext()), Offset)),
                      TypeID}));
 }
 
 void Function::setSubprogram(DISubprogram *SP) {
   setMetadata(LLVMContext::MD_dbg, SP);
 }
 
 DISubprogram *Function::getSubprogram() const {
   return cast_or_null<DISubprogram>(getMetadata(LLVMContext::MD_dbg));
 }
 
-void GlobalVariable::addDebugInfo(DIGlobalVariable *GV) {
+void GlobalVariable::addDebugInfo(DIGlobalVariableExpression *GV) {
   addMetadata(LLVMContext::MD_dbg, *GV);
 }
 
 void GlobalVariable::getDebugInfo(
-    SmallVectorImpl<DIGlobalVariable *> &GVs) const {
+    SmallVectorImpl<DIGlobalVariableExpression *> &GVs) const {
   SmallVector<MDNode *, 1> MDs;
   getMetadata(LLVMContext::MD_dbg, MDs);
   for (MDNode *MD : MDs)
-    GVs.push_back(cast<DIGlobalVariable>(MD));
+    GVs.push_back(cast<DIGlobalVariableExpression>(MD));
 }

lib/IR/Verifier.cpp

 }
 
 void Verifier::visitGlobalVariable(const GlobalVariable &GV) {
   if (GV.hasInitializer()) {
     Assert(GV.getInitializer()->getType() == GV.getValueType(),
            "Global variable initializer type does not match global "
            "variable type!",
            &GV);
-
     // If the global has common linkage, it must have a zero initializer and
     // cannot be constant.
     if (GV.hasCommonLinkage()) {
       Assert(GV.getInitializer()->isNullValue(),
              "'common' global must have a zero initializer!", &GV);
       Assert(!GV.isConstant(), "'common' global may not be marked constant!",
              &GV);
       Assert(!GV.hasComdat(), "'common' global may not be in a Comdat!", &GV);
if (GV.hasName() && (GV.getName() == "llvm.used" ||
     }
   }
 
   Assert(!GV.hasDLLImportStorageClass() ||
              (GV.isDeclaration() && GV.hasExternalLinkage()) ||
              GV.hasAvailableExternallyLinkage(),
          "Global is marked as dllimport, but not external", &GV);
 
+  // Visit any debug info attachments.
+  SmallVector<MDNode *, 1> MDs;
+  GV.getMetadata(LLVMContext::MD_dbg, MDs);
+  for (auto *MD : MDs)
+    if (auto *GVE = dyn_cast<DIGlobalVariableExpression>(MD))
+      visitDIGlobalVariableExpression(*GVE);
+    else
+      AssertDI(false, "!dbg attachment of global variable must be a "
+                      "DIGlobalVariableExpression");
+
   if (!GV.hasInitializer()) {
     visitGlobalValue(GV);
     return;
   }
 
   // Walk any aggregate initializers looking for bitcasts between address spaces
   visitConstantExprsRecursively(GV.getInitializer());
 
for (Metadata *Op : N.getRetainedTypes()->operands()) {
                       (isa<DISubprogram>(Op) &&
                        !cast<DISubprogram>(Op)->isDefinition())),
                "invalid retained type", &N, Op);
     }
   }
   if (auto *Array = N.getRawGlobalVariables()) {
     AssertDI(isa<MDTuple>(Array), "invalid global variable list", &N, Array);
     for (Metadata *Op : N.getGlobalVariables()->operands()) {
-      AssertDI(Op && isa<DIGlobalVariable>(Op), "invalid global variable ref",
-               &N, Op);
+      AssertDI(Op && (isa<DIGlobalVariableExpression>(Op)),
+               "invalid global variable ref", &N, Op);
     }
   }
   if (auto *Array = N.getRawImportedEntities()) {
     AssertDI(isa<MDTuple>(Array), "invalid imported entity list", &N, Array);
     for (Metadata *Op : N.getImportedEntities()->operands()) {
       AssertDI(Op && isa<DIImportedEntity>(Op), "invalid imported entity ref",
                &N, Op);
     }

 }
 
 void Verifier::visitDIGlobalVariable(const DIGlobalVariable &N) {
   // Checks common to all variables.
   visitDIVariable(N);
 
   AssertDI(N.getTag() == dwarf::DW_TAG_variable, "invalid tag", &N);
   AssertDI(!N.getName().empty(), "missing global variable name", &N);
-  if (auto *V = N.getRawExpr())
-    AssertDI(isa<DIExpression>(V), "invalid expression location", &N, V);
   if (auto *Member = N.getRawStaticDataMemberDeclaration()) {
     AssertDI(isa<DIDerivedType>(Member),
              "invalid static data member declaration", &N, Member);
   }
 }
 
 void Verifier::visitDILocalVariable(const DILocalVariable &N) {
   // Checks common to all variables.
   visitDIVariable(N);
 
   AssertDI(N.getTag() == dwarf::DW_TAG_variable, "invalid tag", &N);
   AssertDI(N.getRawScope() && isa<DILocalScope>(N.getRawScope()),
            "local variable requires a valid scope", &N, N.getRawScope());
 }
 
 void Verifier::visitDIExpression(const DIExpression &N) {
   AssertDI(N.isValid(), "invalid expression", &N);
 }
 
+void Verifier::visitDIGlobalVariableExpression(
+    const DIGlobalVariableExpression &GVE) {
+  AssertDI(GVE.getVariable(), "missing variable");
+  if (auto *Var = GVE.getVariable())
+    visitDIGlobalVariable(*Var);
+  if (auto *Expr = GVE.getExpression())
+    visitDIExpression(*Expr);
+}
+
 void Verifier::visitDIObjCProperty(const DIObjCProperty &N) {
   AssertDI(N.getTag() == dwarf::DW_TAG_APPLE_property, "invalid tag", &N);
   if (auto *T = N.getRawType())
     AssertDI(isType(T), "invalid type ref", &N, T);
   if (auto *F = N.getRawFile())
     AssertDI(isa<DIFile>(F), "invalid file", &N, F);
 }
 

lib/Transforms/IPO/StripSymbols.cpp

bool StripDeadDebugInfo::runOnModule(Module &M) {
   // as much as possible.
   DebugInfoFinder F;
   F.processModule(M);
 
   // For each compile unit, find the live set of global variables/functions and
   // replace the current list of potentially dead global variables/functions
   // with the live list.
   SmallVector<Metadata *, 64> LiveGlobalVariables;
-  DenseSet<const MDNode *> VisitedSet;
+  DenseSet<DIGlobalVariableExpression *> VisitedSet;
 
-  std::set<DIGlobalVariable *> LiveGVs;
+  std::set<DIGlobalVariableExpression *> LiveGVs;
   for (GlobalVariable &GV : M.globals()) {
-    SmallVector<DIGlobalVariable *, 1> DIs;
-    GV.getDebugInfo(DIs);
-    for (DIGlobalVariable *DI : DIs)
-      LiveGVs.insert(DI);
+    SmallVector<DIGlobalVariableExpression *, 1> GVEs;
+    GV.getDebugInfo(GVEs);
+    for (auto *GVE : GVEs)
+      LiveGVs.insert(GVE);
   }
 
   for (DICompileUnit *DIC : F.compile_units()) {
     // Create our live global variable list.
     bool GlobalVariableChange = false;
-    for (DIGlobalVariable *DIG : DIC->getGlobalVariables()) {
+    for (auto *DIG : DIC->getGlobalVariables()) {
+      if (DIG->getExpression() && DIG->getExpression()->isConstant())
+        LiveGVs.insert(DIG);
+
       // Make sure we only visit each global variable only once.
       if (!VisitedSet.insert(DIG).second)
         continue;
 
       // If a global variable references DIG, the global variable is live.
       if (LiveGVs.count(DIG))
         LiveGlobalVariables.push_back(DIG);
       else

lib/Transforms/Instrumentation/AddressSanitizer.cpp

if (TargetTriple.isOSBinFormatMachO() && !G->hasSection() &&
         G->isConstant()) {
       auto Seq = dyn_cast<ConstantDataSequential>(G->getInitializer());
       if (Seq && Seq->isCString())
         NewGlobal->setSection("__TEXT,__asan_cstring,regular");
     }
 
     // Transfer the debug info.  The payload starts at offset zero so we can
     // copy the debug info over as is.
-    SmallVector<DIGlobalVariable *, 1> GVs;
+    SmallVector<DIGlobalVariableExpression *, 1> GVs;
     G->getDebugInfo(GVs);
     for (auto *GV : GVs)
       NewGlobal->addDebugInfo(GV);
 
     Value *Indices2[2];
     Indices2[0] = IRB.getInt32(0);
     Indices2[1] = IRB.getInt32(0);
 
     G->replaceAllUsesWith(
         ConstantExpr::getGetElementPtr(NewTy, NewGlobal, Indices2, true));

test/Assembler/diglobalvariable.ll

 ; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
 ; RUN: verify-uselistorder %s
 
 @foo = global i32 0
 
-; CHECK: !named = !{!0, !1, !2, !3, !4, !5, !6, !8, !9, !10}
-!named = !{!0, !1, !2, !3, !4, !5, !6, !7, !8, !9}
+; CHECK: !named = !{!0, !1, !2, !3, !4, !5, !6, !7, !8}
+!named = !{!0, !1, !2, !3, !4, !5, !6, !7, !8}
 
 !0 = !DIFile(filename: "scope.h", directory: "/path/to/dir")
 !1 = distinct !{}
 !2 = !DIFile(filename: "path/to/file", directory: "/path/to/dir")
 !3 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !4 = distinct !{}
 
 ; CHECK: !5 = !DIGlobalVariable(name: "foo", linkageName: "foo", scope: !0, file: !2, line: 7, type: !3, isLocal: true, isDefinition: false, align: 32)
 !5 = !DIGlobalVariable(name: "foo", linkageName: "foo", scope: !0,
                        file: !2, line: 7, type: !3, isLocal: true,
                        isDefinition: false, align: 32)
 
-; CHECK: !6 = !DIGlobalVariable(name: "foo", scope: !0, isLocal: false, isDefinition: true, expr: !7)
-; CHECK: !7 = !DIExpression(DW_OP_constu, 42, DW_OP_stack_value)
-!6 = !DIGlobalVariable(name: "foo", scope: !0, expr: !DIExpression(DW_OP_constu, 42, DW_OP_stack_value))
+!6 = !DICompositeType(tag: DW_TAG_structure_type, name: "Class", size: 8, align: 8)
+!7 = !DIDerivedType(tag: DW_TAG_member, name: "mem", flags: DIFlagStaticMember, scope: !6, baseType: !3)
 
-!7 = !DICompositeType(tag: DW_TAG_structure_type, name: "Class", size: 8, align: 8)
-!8 = !DIDerivedType(tag: DW_TAG_member, name: "mem", flags: DIFlagStaticMember, scope: !7, baseType: !3)
-
-; CHECK: !10 = !DIGlobalVariable(name: "mem", scope: !0, isLocal: false, isDefinition: true, declaration: !9)
-!9 = !DIGlobalVariable(name: "mem", scope: !0, declaration: !8)
+; CHECK: !8 = !DIGlobalVariable(name: "mem", scope: !0, isLocal: false, isDefinition: true, declaration: !7)
+!8 = !DIGlobalVariable(name: "mem", scope: !0, declaration: !7)

test/Assembler/diglobalvariableexpression.ll

+; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
+; RUN: verify-uselistorder %s
+
+@foo = global i32 0
+
+; CHECK: !named = !{!0, !1, !2, !3, !4, !5, !6, !7}
+!named = !{!0, !1, !2, !3, !4, !5, !6, !7}
+
+!0 = !DIFile(filename: "scope.h", directory: "/path/to/dir")
+!1 = distinct !{}
+!2 = !DIFile(filename: "path/to/file", directory: "/path/to/dir")
+!3 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!4 = distinct !{}
+
+; CHECK: !5 = !DIGlobalVariable(name: "foo", linkageName: "foo", scope: !0, file: !2, line: 7, type: !3, isLocal: true, isDefinition: false, align: 32)
+!5 = !DIGlobalVariable(name: "foo", linkageName: "foo", scope: !0,
+                       file: !2, line: 7, type: !3, isLocal: true,
+                       isDefinition: false, align: 32)
+
+; CHECK: !6 = !DIGlobalVariableExpression(var: !5, expr: !7)
+!6 = !DIGlobalVariableExpression(var: !5, expr: !7)
+; CHECK: !7 = !DIExpression(DW_OP_constu, 42, DW_OP_stack_value)
+!7 = !DIExpression(DW_OP_constu, 42, DW_OP_stack_value)

test/Bitcode/DIGlobalVariableExpr.ll

+; RUN: llvm-dis -o - %s.bc | FileCheck %s
+
+; CHECK: @g = common global i32 0, align 4, !dbg ![[G:[0-9]+]]
+; CHECK: ![[G]] = {{.*}}!DIGlobalVariableExpression(var: ![[GVAR:[0-9]+]], expr: ![[GEXPR:[0-9]+]])
+; CHECK: ![[GVAR]] = distinct !DIGlobalVariable(name: "g",
+; CHECK: !DIGlobalVariableExpression(var: ![[CVAR:[0-9]+]], expr: ![[CEXPR:[0-9]+]])
+; CHECK: ![[CVAR]] = distinct !DIGlobalVariable(name: "c",
+; CHECK: ![[CEXPR]] = !DIExpression(DW_OP_constu, 23, DW_OP_stack_value)
+; CHECK: ![[GEXPR]] = !DIExpression(DW_OP_plus, 1)
+@g = common global i32 0, align 4, !dbg !0
+
+!llvm.dbg.cu = !{!1}
+!llvm.module.flags = !{!6, !7, !8}
+!llvm.ident = !{!9}
+
+!0 = distinct !DIGlobalVariable(name: "g", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true, expr: !DIExpression(DW_OP_plus, 1))
+!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 4.0.0 (trunk 286129) (llvm/trunk 286128)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
+!2 = !DIFile(filename: "a.c", directory: "/")
+!3 = !{}
+!4 = !{!0, !10}
+!5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!6 = !{i32 2, !"Dwarf Version", i32 4}
+!7 = !{i32 2, !"Debug Info Version", i32 3}
+!8 = !{i32 1, !"PIC Level", i32 2}
+!9 = !{!"clang version 4.0.0 (trunk 286129) (llvm/trunk 286128)"}
+!10 = distinct !DIGlobalVariable(name: "c", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true, expr: !DIExpression(DW_OP_constu, 23, DW_OP_stack_value))

test/Bitcode/diglobalvariable-3.8.ll

 ; RUN: llvm-dis -o - %s.bc | FileCheck %s
 
-; CHECK: !0 = distinct !DIGlobalVariable(name: "a", scope: null, isLocal: false, isDefinition: true, expr: !1)
-; CHECK: !1 = !DIExpression(DW_OP_constu, 42, DW_OP_stack_value)
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!7, !8}
 
-!named = !{!0}
+; CHECK: !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.1", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.1", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, globals: !3)
+!1 = !DIFile(filename: "g.c", directory: "/")
+!2 = !{}
+; CHECK: !3 = !{!4}
+!3 = !{!4}
+; CHECK: !4 = {{.*}}!DIGlobalVariableExpression(var: !5, expr: !8)
+; CHECK: !5 = !DIGlobalVariable(name: "c", scope: !0, file: !1, line: 1, type: !6, isLocal: false, isDefinition: true)
+; CHECK: !8 = !DIExpression(DW_OP_constu, 42, DW_OP_stack_value)
+!4 = !DIGlobalVariable(name: "c", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, variable: i32 42)
+!5 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !6)
+!6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!7 = !{i32 2, !"Dwarf Version", i32 2}
+!8 = !{i32 2, !"Debug Info Version", i32 3}
 
-!0 = distinct !DIGlobalVariable(name: "a", variable: i32 42)

test/Bitcode/dityperefs-3.8.ll

 ; CHECK-NEXT: !2 = !DICompositeType(tag: DW_TAG_structure_type, name: "T2", scope: !1{{.*}}, baseType: !1, vtableHolder: !1, identifier: "T2")
 ; CHECK-NEXT: !3 = !DIDerivedType(tag: DW_TAG_member, name: "M1", scope: !1{{.*}}, baseType: !2)
 ; CHECK-NEXT: !4 = !DISubroutineType(types: !5)
 ; CHECK-NEXT: !5 = !{!1, !2}
 ; CHECK-NEXT: !6 = !DISubprogram(scope: !1,{{.*}} containingType: !1{{[,)]}}
 ; CHECK-NEXT: !7 = !DILocalVariable(name: "V1", scope: !6, type: !2)
 ; CHECK-NEXT: !8 = !DIObjCProperty(name: "P1", type: !1)
 ; CHECK-NEXT: !9 = !DITemplateTypeParameter(type: !1)
-; CHECK-NEXT: !10 = !DIGlobalVariable(name: "G",{{.*}} type: !1,
-; CHECK-NEXT: !11 = !DITemplateValueParameter(type: !1, value: i32* @G1)
-; CHECK-NEXT: !12 = !DIImportedEntity(tag: DW_TAG_imported_module, name: "T2", scope: !0, entity: !1)
-; CHECK-NEXT: !13 = !DICompositeType(tag: DW_TAG_structure_type, name: "T3", file: !0, elements: !14, identifier: "T3")
-; CHECK-NEXT: !14 = !{!15}
-; CHECK-NEXT: !15 = !DISubprogram(scope: !13,
-; CHECK-NEXT: !16 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type,{{.*}} extraData: !13)
+; CHECK-NEXT: !10 = distinct !DIGlobalVariableExpression(var: !11)
+; CHECK-NEXT: !11 = !DIGlobalVariable(name: "G",{{.*}} type: !1,
+; CHECK-NEXT: !12 = !DITemplateValueParameter(type: !1, value: i32* @G1)
+; CHECK-NEXT: !13 = !DIImportedEntity(tag: DW_TAG_imported_module, name: "T2", scope: !0, entity: !1)
+; CHECK-NEXT: !14 = !DICompositeType(tag: DW_TAG_structure_type, name: "T3", file: !0, elements: !15, identifier: "T3")
+; CHECK-NEXT: !15 = !{!16}
+; CHECK-NEXT: !16 = !DISubprogram(scope: !14,
+; CHECK-NEXT: !17 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type,{{.*}} extraData: !14)
 
 !0 = !DIFile(filename: "path/to/file", directory: "/path/to/dir")
 !1 = !DICompositeType(tag: DW_TAG_structure_type, name: "T1", file: !0, identifier: "T1")
 !2 = !DICompositeType(tag: DW_TAG_structure_type, name: "T2", file: !0, scope: !"T1", baseType: !"T1", vtableHolder: !"T1", identifier: "T2")
 !3 = !DIDerivedType(tag: DW_TAG_member, name: "M1", file: !0, scope: !"T1", baseType: !"T2")
 !4 = !DISubroutineType(types: !5)
 !5 = !{!"T1", !"T2"}
 !6 = !DISubprogram(scope: !"T1", isDefinition: false, containingType: !"T1")

test/CodeGen/AArch64/arm64-2011-03-17-AsmPrinterCrash.ll

if.else295:                                       ; preds = %entry
   store i32 0, i32* %do_tab_convert, align 4, !dbg !19
   unreachable
 }
 
 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
 
 !llvm.dbg.cu = !{!0}
 
-!0 = !DIGlobalVariable(name: "vsplive", line: 617, isLocal: true, isDefinition: true, scope: !1, file: !2, type: !6)
+!0 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "vsplive", line: 617, isLocal: true, isDefinition: true, scope: !1, file: !2, type: !6))
 !1 = distinct !DISubprogram(name: "drt_vsprintf", line: 616, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !3, file: !20, scope: !2, type: !4)
 !2 = !DIFile(filename: "print.i", directory: "/Volumes/Ebi/echeng/radars/r9146594")
 !3 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (http://llvm.org/git/clang.git git:/git/puzzlebox/clang.git/ c4d1aea01c4444eb81bdbf391f1be309127c3cf1)", isOptimized: true, emissionKind: FullDebug, file: !20, enums: !21, retainedTypes: !21, globals: !{!0})
 !4 = !DISubroutineType(types: !5)
 !5 = !{!6}
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = distinct !DISubprogram(name: "putc_mem", line: 30, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !3, file: !20, scope: !2, type: !8)
 !8 = !DISubroutineType(types: !9)

test/CodeGen/ARM/2010-06-25-Thumb2ITInvalidIterator.ll

 !6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !26, scope: !2, baseType: !7)
 !7 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
 !8 = !DILocalVariable(name: "nbytes", line: 4, arg: 2, scope: !1, file: !2, type: !9)
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned long", size: 32, align: 32, encoding: DW_ATE_unsigned)
 !10 = !DILocalVariable(name: "nread", line: 6, scope: !11, file: !2, type: !9)
 !11 = distinct !DILexicalBlock(line: 5, column: 1, file: !26, scope: !1)
 !12 = !DILocalVariable(name: "c", line: 7, scope: !11, file: !2, type: !13)
 !13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!14 = !DIGlobalVariable(name: "length", linkageName: "length", line: 1, isLocal: false, isDefinition: true, scope: !2, file: !2, type: !13)
+!14 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "length", linkageName: "length", line: 1, isLocal: false, isDefinition: true, scope: !2, file: !2, type: !13))
 !15 = !DILocation(line: 4, column: 24, scope: !1)
 !16 = !DILocation(line: 4, column: 43, scope: !1)
 !17 = !DILocation(line: 9, column: 2, scope: !11)
 !18 = !{i32 0}
 !19 = !DILocation(line: 10, column: 2, scope: !11)
 !20 = !DILocation(line: 11, column: 2, scope: !11)
 !21 = !DILocation(line: 12, column: 3, scope: !22)
 !22 = distinct !DILexicalBlock(line: 11, column: 45, file: !26, scope: !11)
 !23 = !DILocation(line: 13, column: 3, scope: !22)
 !24 = !DILocation(line: 14, column: 2, scope: !22)
 !25 = !DILocation(line: 15, column: 1, scope: !11)
 !26 = !DIFile(filename: "t.c", directory: "/private/tmp")

test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll

 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "_Bool", size: 8, align: 8, encoding: DW_ATE_boolean)
 !6 = distinct !DISubprogram(name: "get2", linkageName: "get2", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, scopeLine: 7, file: !47, scope: !1, type: !3, variables: !43)
 !7 = distinct !DISubprogram(name: "get3", linkageName: "get3", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, scopeLine: 10, file: !47, scope: !1, type: !3, variables: !44)
 !8 = distinct !DISubprogram(name: "get4", linkageName: "get4", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, scopeLine: 13, file: !47, scope: !1, type: !3, variables: !45)
 !9 = distinct !DISubprogram(name: "get5", linkageName: "get5", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, scopeLine: 16, file: !47, scope: !1, type: !3, variables: !46)
 !10 = !DILocalVariable(name: "a", line: 4, arg: 1, scope: !0, file: !1, type: !5)
 !11 = !DILocalVariable(name: "b", line: 4, scope: !12, file: !1, type: !5)
 !12 = distinct !DILexicalBlock(line: 4, column: 0, file: !47, scope: !0)
-!13 = !DIGlobalVariable(name: "x1", line: 3, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5)
-!14 = !DIGlobalVariable(name: "x2", line: 6, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5)
-!15 = !DIGlobalVariable(name: "x3", line: 9, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5)
-!16 = !DIGlobalVariable(name: "x4", line: 12, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5)
-!17 = !DIGlobalVariable(name: "x5", line: 15, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !5)
+!13 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x1", line: 3, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5))
+!14 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x2", line: 6, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5))
+!15 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x3", line: 9, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5))
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x4", line: 12, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5))
+!17 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x5", line: 15, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !5))
 !18 = !DILocalVariable(name: "a", line: 7, arg: 1, scope: !6, file: !1, type: !5)
 !19 = !DILocalVariable(name: "b", line: 7, scope: !20, file: !1, type: !5)
 !20 = distinct !DILexicalBlock(line: 7, column: 0, file: !47, scope: !6)
 !21 = !DILocalVariable(name: "a", line: 10, arg: 1, scope: !7, file: !1, type: !5)
 !22 = !DILocalVariable(name: "b", line: 10, scope: !23, file: !1, type: !5)
 !23 = distinct !DILexicalBlock(line: 10, column: 0, file: !47, scope: !7)
 !24 = !DILocalVariable(name: "a", line: 13, arg: 1, scope: !8, file: !1, type: !5)
 !25 = !DILocalVariable(name: "b", line: 13, scope: !26, file: !1, type: !5)

test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll

 !14 = !DILocalVariable(name: "b", line: 8, scope: !15, file: !2, type: !5)
 !15 = distinct !DILexicalBlock(line: 8, column: 17, file: !47, scope: !6)
 !16 = !DILocalVariable(name: "a", line: 11, arg: 1, scope: !7, file: !2, type: !5)
 !17 = !DILocalVariable(name: "b", line: 11, scope: !18, file: !2, type: !5)
 !18 = distinct !DILexicalBlock(line: 11, column: 19, file: !47, scope: !7)
 !19 = !DILocalVariable(name: "a", line: 14, arg: 1, scope: !8, file: !2, type: !5)
 !20 = !DILocalVariable(name: "b", line: 14, scope: !21, file: !2, type: !5)
 !21 = distinct !DILexicalBlock(line: 14, column: 19, file: !47, scope: !8)
-!25 = !DIGlobalVariable(name: "x1", line: 4, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !5)
-!26 = !DIGlobalVariable(name: "x2", line: 7, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !5)
+!25 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x1", line: 4, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !5))
+!26 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x2", line: 7, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !5))
 !27 = !DILocalVariable(name: "a", line: 17, arg: 1, scope: !9, file: !2, type: !5)
 !28 = !DILocalVariable(name: "b", line: 17, scope: !29, file: !2, type: !5)
 !29 = distinct !DILexicalBlock(line: 17, column: 19, file: !47, scope: !9)
 !30 = !DILocation(line: 5, column: 16, scope: !1)
 !31 = !DILocation(line: 5, column: 32, scope: !12)
 !32 = !DILocation(line: 8, column: 14, scope: !6)
 !33 = !DILocation(line: 8, column: 29, scope: !15)
 !34 = !DILocation(line: 11, column: 16, scope: !7)

test/CodeGen/ARM/coalesce-dbgvalue.ll

 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{!10, !11}
 !10 = !DILocalVariable(name: "e", line: 8, scope: !4, file: !5, type: !8)
 !11 = !DILocalVariable(name: "f", line: 13, scope: !12, file: !5, type: !14)
 !12 = distinct !DILexicalBlock(line: 12, column: 0, file: !1, scope: !13)
 !13 = distinct !DILexicalBlock(line: 12, column: 0, file: !1, scope: !4)
 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !8)
 !15 = !{!16, !18, !19, !20}
-!16 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !17)
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !17))
 !17 = !DIBasicType(tag: DW_TAG_base_type, name: "long long int", size: 64, align: 32, encoding: DW_ATE_signed)
-!18 = !DIGlobalVariable(name: "b", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8)
-!19 = !DIGlobalVariable(name: "c", line: 3, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8)
-!20 = !DIGlobalVariable(name: "d", line: 4, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8)
+!18 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8))
+!19 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c", line: 3, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8))
+!20 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "d", line: 4, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8))
 !21 = !DILocation(line: 10, scope: !22)
 !22 = distinct !DILexicalBlock(line: 10, column: 0, file: !1, scope: !4)
 !26 = !DILocation(line: 12, scope: !13)
 !27 = !{i32* null}
 !28 = !DILocation(line: 13, scope: !12)
 !29 = !DILocation(line: 14, scope: !12)
 !31 = !DILocation(line: 16, scope: !4)
 !32 = !DILocation(line: 18, scope: !4)
 !33 = !{i32 1, !"Debug Info Version", i32 3}

test/CodeGen/BPF/dwarfdump.ll

 
 attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
 attributes #1 = { nounwind readnone }
 
 !llvm.dbg.cu = !{!6}
 !llvm.module.flags = !{!12, !13}
 !llvm.ident = !{!14}
 
-!0 = distinct !DIGlobalVariable(name: "myvar_c", scope: !1, file: !2, line: 3, type: !5, isLocal: true, isDefinition: true)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "myvar_c", scope: !1, file: !2, line: 3, type: !5, isLocal: true, isDefinition: true))
 !1 = distinct !DISubprogram(name: "testprog", scope: !2, file: !2, line: 1, type: !3, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !6, variables: !9)
 !2 = !DIFile(filename: "testprog.c", directory: "/w/llvm/bld")
 !3 = !DISubroutineType(types: !4)
 !4 = !{!5, !5, !5}
 !5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 !6 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 4.0.0 (trunk 287518) (llvm/trunk 287520)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !7, globals: !8)
 !7 = !{}
 !8 = !{!0}

test/CodeGen/NVPTX/generic-to-nvvm-ir.ll

!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1,
       producer: "clang version 4.0.0",
       isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 ; CHECK: [[CUNODE]] = distinct !DICompileUnit({{.*}} globals: [[GLOBALSNODE:![0-9]+]]
 !1 = !DIFile(filename: "foo.cu", directory: "/usr/local/google/home/tra/work/llvm/build/gpu/debug")
 !2 = !{}
 !3 = !{!4}
 ; Find list of global variables and make sure it's the one used by DICompileUnit
 ; CHECK: [[GLOBALSNODE]] = !{[[GVNODE:![0-9]+]]}
-!4 = distinct !DIGlobalVariable(name: "static_var", scope: !0, file: !1, line: 2, type: !5, isLocal: false,
-               isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: distinct !DIGlobalVariable(name: "static_var", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true))
 ; Debug info must also be updated to reflect new address space.
 ; CHECK: [[GVNODE]] = distinct !DIGlobalVariable(name: "static_var"
 ; CHECK-SAME: scope: [[CUNODE]]
 ; CHECK-SAME: type: [[TYPENODE:![0-9]+]]
 !5 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 ; CHECK: [[TYPENODE]] = !DIBasicType(name: "char"
 !6 = !{i32 2, !"Dwarf Version", i32 4}
 !7 = !{i32 2, !"Debug Info Version", i32 3}

test/CodeGen/PowerPC/pr17168.ll

 !291 = !DILocalVariable(name: "k", line: 2728, scope: !287, file: !5, type: !8)
 !292 = !DILocalVariable(name: "isize", line: 2728, scope: !287, file: !5, type: !8)
 !293 = distinct !DISubprogram(name: "lhsx", line: 898, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 898, file: !1, scope: !5, type: !115, variables: !294)
 !294 = !{!295, !296, !297}
 !295 = !DILocalVariable(name: "i", line: 907, scope: !293, file: !5, type: !8)
 !296 = !DILocalVariable(name: "j", line: 907, scope: !293, file: !5, type: !8)
 !297 = !DILocalVariable(name: "k", line: 907, scope: !293, file: !5, type: !8)
 !298 = !{!299, !304, !305, !309, !310, !311, !312, !313, !314, !315, !316, !317, !318, !319, !320, !321, !322, !323, !324, !325, !326, !327, !328, !329, !330, !331, !332, !333, !334, !335, !336, !337, !338, !339, !340, !341, !342, !343, !347, !350, !351, !352, !353, !354, !355, !356, !360, !361, !362, !363, !364, !365, !366, !367, !368, !369, !370, !371, !372, !373, !374, !375, !376, !377, !378, !379, !380, !381, !382, !383, !384, !385, !386, !387, !388, !389, !390, !391, !392, !393, !394, !395, !396, !397, !398, !399, !400, !401, !402, !403, !404, !405, !406, !407, !408, !409, !410, !411, !412, !413, !414, !415, !416, !417, !418, !419, !422, !426, !427, !430, !431, !434, !435, !436, !437}
-!299 = !DIGlobalVariable(name: "grid_points", line: 28, isLocal: true, isDefinition: true, scope: null, file: !300, type: !302)
+!299 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "grid_points", line: 28, isLocal: true, isDefinition: true, scope: null, file: !300, type: !302))
 !300 = !DIFile(filename: "./header.h", directory: "/home/hfinkel/src/NPB2.3-omp-C/BT")
 !301 = !{!"./header.h", !"/home/hfinkel/src/NPB2.3-omp-C/BT"}
 !302 = !DICompositeType(tag: DW_TAG_array_type, size: 96, align: 32, baseType: !8, elements: !303)
 !303 = !{!178}
-!304 = !DIGlobalVariable(name: "dt", line: 35, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!305 = !DIGlobalVariable(name: "rhs", line: 68, isLocal: true, isDefinition: true, scope: null, file: !300, type: !306)
+!304 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dt", line: 35, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!305 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "rhs", line: 68, isLocal: true, isDefinition: true, scope: null, file: !300, type: !306))
 !306 = !DICompositeType(tag: DW_TAG_array_type, size: 1385839040, align: 64, baseType: !20, elements: !307)
 !307 = !{!308, !308, !308, !93}
 !308 = !DISubrange(count: 163)
-!309 = !DIGlobalVariable(name: "zzcon5", line: 42, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!310 = !DIGlobalVariable(name: "zzcon4", line: 42, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!311 = !DIGlobalVariable(name: "zzcon3", line: 42, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!312 = !DIGlobalVariable(name: "dz5tz1", line: 43, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!313 = !DIGlobalVariable(name: "dz4tz1", line: 43, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!314 = !DIGlobalVariable(name: "dz3tz1", line: 43, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!315 = !DIGlobalVariable(name: "zzcon2", line: 42, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!316 = !DIGlobalVariable(name: "dz2tz1", line: 43, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!317 = !DIGlobalVariable(name: "tz2", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!318 = !DIGlobalVariable(name: "dz1tz1", line: 43, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!319 = !DIGlobalVariable(name: "yycon5", line: 40, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!320 = !DIGlobalVariable(name: "yycon4", line: 40, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!321 = !DIGlobalVariable(name: "yycon3", line: 40, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!322 = !DIGlobalVariable(name: "dy5ty1", line: 41, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!323 = !DIGlobalVariable(name: "dy4ty1", line: 41, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!324 = !DIGlobalVariable(name: "dy3ty1", line: 41, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!325 = !DIGlobalVariable(name: "yycon2", line: 40, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!326 = !DIGlobalVariable(name: "dy2ty1", line: 41, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!327 = !DIGlobalVariable(name: "ty2", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!328 = !DIGlobalVariable(name: "dy1ty1", line: 41, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!329 = !DIGlobalVariable(name: "dssp", line: 35, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!330 = !DIGlobalVariable(name: "c1", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!331 = !DIGlobalVariable(name: "xxcon5", line: 38, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!332 = !DIGlobalVariable(name: "xxcon4", line: 38, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!333 = !DIGlobalVariable(name: "xxcon3", line: 38, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!334 = !DIGlobalVariable(name: "dx5tx1", line: 39, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!335 = !DIGlobalVariable(name: "dx4tx1", line: 39, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!336 = !DIGlobalVariable(name: "dx3tx1", line: 39, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!337 = !DIGlobalVariable(name: "c2", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!338 = !DIGlobalVariable(name: "con43", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!339 = !DIGlobalVariable(name: "xxcon2", line: 38, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!340 = !DIGlobalVariable(name: "dx2tx1", line: 39, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!341 = !DIGlobalVariable(name: "tx2", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!342 = !DIGlobalVariable(name: "dx1tx1", line: 39, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!343 = !DIGlobalVariable(name: "forcing", line: 66, isLocal: true, isDefinition: true, scope: null, file: !300, type: !344)
+!309 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "zzcon5", line: 42, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!310 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "zzcon4", line: 42, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!311 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "zzcon3", line: 42, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!312 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dz5tz1", line: 43, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!313 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dz4tz1", line: 43, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!314 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dz3tz1", line: 43, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!315 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "zzcon2", line: 42, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!316 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dz2tz1", line: 43, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!317 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tz2", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!318 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dz1tz1", line: 43, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!319 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "yycon5", line: 40, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!320 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "yycon4", line: 40, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!321 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "yycon3", line: 40, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!322 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dy5ty1", line: 41, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!323 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dy4ty1", line: 41, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!324 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dy3ty1", line: 41, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!325 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "yycon2", line: 40, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!326 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dy2ty1", line: 41, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!327 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ty2", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!328 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dy1ty1", line: 41, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!329 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dssp", line: 35, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!330 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c1", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!331 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "xxcon5", line: 38, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!332 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "xxcon4", line: 38, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!333 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "xxcon3", line: 38, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!334 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dx5tx1", line: 39, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!335 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dx4tx1", line: 39, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!336 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dx3tx1", line: 39, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!337 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c2", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!338 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "con43", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!339 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "xxcon2", line: 38, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!340 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dx2tx1", line: 39, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!341 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tx2", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!342 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dx1tx1", line: 39, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!343 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "forcing", line: 66, isLocal: true, isDefinition: true, scope: null, file: !300, type: !344))
 !344 = !DICompositeType(tag: DW_TAG_array_type, size: 1663006848, align: 64, baseType: !20, elements: !345)
 !345 = !{!308, !308, !308, !346}
 !346 = !DISubrange(count: 6)
-!347 = !DIGlobalVariable(name: "qs", line: 63, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348)
+!347 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "qs", line: 63, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348))
 !348 = !DICompositeType(tag: DW_TAG_array_type, size: 277167808, align: 64, baseType: !20, elements: !349)
 !349 = !{!308, !308, !308}
-!350 = !DIGlobalVariable(name: "square", line: 65, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348)
-!351 = !DIGlobalVariable(name: "ws", line: 62, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348)
-!352 = !DIGlobalVariable(name: "vs", line: 61, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348)
-!353 = !DIGlobalVariable(name: "us", line: 60, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348)
-!354 = !DIGlobalVariable(name: "rho_i", line: 64, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348)
-!355 = !DIGlobalVariable(name: "u", line: 67, isLocal: true, isDefinition: true, scope: null, file: !300, type: !306)
-!356 = !DIGlobalVariable(name: "ce", line: 36, isLocal: true, isDefinition: true, scope: null, file: !300, type: !357)
+!350 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "square", line: 65, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348))
+!351 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ws", line: 62, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348))
+!352 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "vs", line: 61, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348))
+!353 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "us", line: 60, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348))
+!354 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "rho_i", line: 64, isLocal: true, isDefinition: true, scope: null, file: !300, type: !348))
+!355 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "u", line: 67, isLocal: true, isDefinition: true, scope: null, file: !300, type: !306))
+!356 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ce", line: 36, isLocal: true, isDefinition: true, scope: null, file: !300, type: !357))
 !357 = !DICompositeType(tag: DW_TAG_array_type, size: 4160, align: 64, baseType: !20, elements: !358)
 !358 = !{!93, !359}
 !359 = !DISubrange(count: 13)
-!360 = !DIGlobalVariable(name: "dnzm1", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!361 = !DIGlobalVariable(name: "dnym1", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!362 = !DIGlobalVariable(name: "dnxm1", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!363 = !DIGlobalVariable(name: "zzcon1", line: 42, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!364 = !DIGlobalVariable(name: "yycon1", line: 40, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!365 = !DIGlobalVariable(name: "xxcon1", line: 38, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!366 = !DIGlobalVariable(name: "con16", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!367 = !DIGlobalVariable(name: "c2iv", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!368 = !DIGlobalVariable(name: "c3c4tz3", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!369 = !DIGlobalVariable(name: "c3c4ty3", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!370 = !DIGlobalVariable(name: "c3c4tx3", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!371 = !DIGlobalVariable(name: "comz6", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!372 = !DIGlobalVariable(name: "comz5", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!373 = !DIGlobalVariable(name: "comz4", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!374 = !DIGlobalVariable(name: "comz1", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!375 = !DIGlobalVariable(name: "dtdssp", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!376 = !DIGlobalVariable(name: "c2dttz1", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!377 = !DIGlobalVariable(name: "c2dtty1", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!378 = !DIGlobalVariable(name: "c2dttx1", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!379 = !DIGlobalVariable(name: "dttz2", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!380 = !DIGlobalVariable(name: "dttz1", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!381 = !DIGlobalVariable(name: "dtty2", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!382 = !DIGlobalVariable(name: "dtty1", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!383 = !DIGlobalVariable(name: "dttx2", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!384 = !DIGlobalVariable(name: "dttx1", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!385 = !DIGlobalVariable(name: "c5dssp", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!386 = !DIGlobalVariable(name: "c4dssp", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!387 = !DIGlobalVariable(name: "dzmax", line: 37, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!388 = !DIGlobalVariable(name: "dymax", line: 37, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!389 = !DIGlobalVariable(name: "dxmax", line: 37, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!390 = !DIGlobalVariable(name: "dz5", line: 34, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!391 = !DIGlobalVariable(name: "dz4", line: 34, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!392 = !DIGlobalVariable(name: "dz3", line: 34, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!393 = !DIGlobalVariable(name: "dz2", line: 34, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!394 = !DIGlobalVariable(name: "dz1", line: 34, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!395 = !DIGlobalVariable(name: "dy5", line: 33, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!396 = !DIGlobalVariable(name: "dy4", line: 33, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!397 = !DIGlobalVariable(name: "dy3", line: 33, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!398 = !DIGlobalVariable(name: "dy2", line: 33, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!399 = !DIGlobalVariable(name: "dy1", line: 33, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!400 = !DIGlobalVariable(name: "dx5", line: 32, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!401 = !DIGlobalVariable(name: "dx4", line: 32, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!402 = !DIGlobalVariable(name: "dx3", line: 32, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!403 = !DIGlobalVariable(name: "dx2", line: 32, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!404 = !DIGlobalVariable(name: "dx1", line: 32, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!405 = !DIGlobalVariable(name: "tz3", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!406 = !DIGlobalVariable(name: "tz1", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!407 = !DIGlobalVariable(name: "ty3", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!408 = !DIGlobalVariable(name: "ty1", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!409 = !DIGlobalVariable(name: "tx3", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!410 = !DIGlobalVariable(name: "tx1", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!411 = !DIGlobalVariable(name: "conz1", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!412 = !DIGlobalVariable(name: "c1345", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!413 = !DIGlobalVariable(name: "c3c4", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!414 = !DIGlobalVariable(name: "c1c5", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!415 = !DIGlobalVariable(name: "c1c2", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!416 = !DIGlobalVariable(name: "c5", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!417 = !DIGlobalVariable(name: "c4", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!418 = !DIGlobalVariable(name: "c3", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!419 = !DIGlobalVariable(name: "lhs", line: 69, isLocal: true, isDefinition: true, scope: null, file: !300, type: !420)
+!360 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dnzm1", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!361 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dnym1", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!362 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dnxm1", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!363 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "zzcon1", line: 42, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!364 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "yycon1", line: 40, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!365 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "xxcon1", line: 38, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!366 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "con16", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!367 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c2iv", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!368 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c3c4tz3", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!369 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c3c4ty3", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!370 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c3c4tx3", line: 48, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!371 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "comz6", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!372 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "comz5", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!373 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "comz4", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!374 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "comz1", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!375 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dtdssp", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!376 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c2dttz1", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!377 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c2dtty1", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!378 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c2dttx1", line: 47, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!379 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dttz2", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!380 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dttz1", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!381 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dtty2", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!382 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dtty1", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!383 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dttx2", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!384 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dttx1", line: 46, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!385 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c5dssp", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!386 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c4dssp", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!387 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dzmax", line: 37, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!388 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dymax", line: 37, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!389 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dxmax", line: 37, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!390 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dz5", line: 34, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!391 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dz4", line: 34, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!392 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dz3", line: 34, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!393 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dz2", line: 34, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!394 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dz1", line: 34, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!395 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dy5", line: 33, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!396 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dy4", line: 33, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!397 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dy3", line: 33, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!398 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dy2", line: 33, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!399 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dy1", line: 33, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!400 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dx5", line: 32, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!401 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dx4", line: 32, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!402 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dx3", line: 32, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!403 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dx2", line: 32, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!404 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "dx1", line: 32, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!405 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tz3", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!406 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tz1", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!407 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ty3", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!408 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ty1", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!409 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tx3", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!410 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tx1", line: 31, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!411 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "conz1", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!412 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c1345", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!413 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c3c4", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!414 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c1c5", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!415 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c1c2", line: 44, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!416 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c5", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!417 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c4", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!418 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c3", line: 45, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!419 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "lhs", line: 69, isLocal: true, isDefinition: true, scope: null, file: !300, type: !420))
 !420 = !DICompositeType(tag: DW_TAG_array_type, size: 20787585600, align: 64, baseType: !20, elements: !421)
 !421 = !{!308, !308, !308, !178, !93, !93}
-!422 = !DIGlobalVariable(name: "q", line: 73, isLocal: true, isDefinition: true, scope: null, file: !300, type: !423)
+!422 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "q", line: 73, isLocal: true, isDefinition: true, scope: null, file: !300, type: !423))
 !423 = !DICompositeType(tag: DW_TAG_array_type, size: 10368, align: 64, baseType: !20, elements: !424)
 !424 = !{!425}
 !425 = !DISubrange(count: 162)
-!426 = !DIGlobalVariable(name: "cuf", line: 72, isLocal: true, isDefinition: true, scope: null, file: !300, type: !423)
-!427 = !DIGlobalVariable(name: "buf", line: 75, isLocal: true, isDefinition: true, scope: null, file: !300, type: !428)
+!426 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "cuf", line: 72, isLocal: true, isDefinition: true, scope: null, file: !300, type: !423))
+!427 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "buf", line: 75, isLocal: true, isDefinition: true, scope: null, file: !300, type: !428))
 !428 = !DICompositeType(tag: DW_TAG_array_type, size: 51840, align: 64, baseType: !20, elements: !429)
 !429 = !{!425, !93}
-!430 = !DIGlobalVariable(name: "ue", line: 74, isLocal: true, isDefinition: true, scope: null, file: !300, type: !428)
-!431 = !DIGlobalVariable(name: "njac", line: 86, isLocal: true, isDefinition: true, scope: null, file: !300, type: !432)
+!430 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ue", line: 74, isLocal: true, isDefinition: true, scope: null, file: !300, type: !428))
+!431 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "njac", line: 86, isLocal: true, isDefinition: true, scope: null, file: !300, type: !432))
 !432 = !DICompositeType(tag: DW_TAG_array_type, size: 6886684800, align: 64, baseType: !20, elements: !433)
 !433 = !{!308, !308, !425, !93, !93}
-!434 = !DIGlobalVariable(name: "fjac", line: 84, isLocal: true, isDefinition: true, scope: null, file: !300, type: !432)
-!435 = !DIGlobalVariable(name: "tmp3", line: 88, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!436 = !DIGlobalVariable(name: "tmp2", line: 88, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
-!437 = !DIGlobalVariable(name: "tmp1", line: 88, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20)
+!434 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "fjac", line: 84, isLocal: true, isDefinition: true, scope: null, file: !300, type: !432))
+!435 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tmp3", line: 88, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!436 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tmp2", line: 88, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
+!437 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tmp1", line: 88, isLocal: true, isDefinition: true, scope: null, file: !300, type: !20))
 !438 = !{i32 2, !"Dwarf Version", i32 4}
 !439 = !DILocation(line: 1898, scope: !440)
 !440 = distinct !DILexicalBlock(line: 1898, column: 0, file: !1, scope: !114)
 !441 = !DILocation(line: 1913, scope: !442)
 !442 = distinct !DILexicalBlock(line: 1913, column: 0, file: !1, scope: !114)
 !443 = !DILocation(line: 1923, scope: !114)
 !444 = !{!"int", !445}
 !445 = !{!"omnipotent char", !446}

test/CodeGen/WebAssembly/dbgvalue.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!11, !12}
 !llvm.ident = !{!13}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 273884) (llvm/trunk 273897)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "crash.c", directory: "wasm/tests")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "key", scope: !0, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "key", scope: !0, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true))
 !5 = !DICompositeType(tag: DW_TAG_array_type, baseType: !6, size: 120, align: 8, elements: !9)
 !6 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !7, line: 185, baseType: !8)
 !7 = !DIFile(filename: "wasm/emscripten/system/include/libc/bits/alltypes.h", directory: "wasm/tests")
 !8 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
 !9 = !{!10}
 !10 = !DISubrange(count: 15)
 !11 = !{i32 2, !"Dwarf Version", i32 4}
 !12 = !{i32 2, !"Debug Info Version", i32 3}

test/CodeGen/X86/2010-05-26-DotDebugLoc.ll

 
 declare void @foo(i32) nounwind optsize noinline ssp
 
 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
 
 !llvm.dbg.cu = !{!2}
 !llvm.module.flags = !{!38}
 
-!0 = !DIGlobalVariable(name: "ret", line: 7, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !3)
+!0 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ret", line: 7, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !3))
 !1 = !DIFile(filename: "foo.c", directory: "/tmp/")
 !2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: FullDebug, file: !36, enums: !37, retainedTypes: !37, globals: !31, imports:  !37)
 !3 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !4 = !DILocalVariable(name: "x", line: 12, arg: 1, scope: !5, file: !1, type: !3)
 !5 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !2, scopeLine: 13, file: !36, scope: !1, type: !6, variables: !33)
 !6 = !DISubroutineType(types: !7)
 !7 = !{null, !3}
 !8 = !DILocalVariable(name: "myvar", line: 17, arg: 1, scope: !9, file: !1, type: !13)

test/CodeGen/X86/fp128-g.ll

 attributes #0 = { nounwind readonly uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
 attributes #1 = { norecurse nounwind readonly uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
 attributes #2 = { nounwind readnone }
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!7, !8, !9}
 !llvm.ident = !{!10}
 
-!0 = distinct !DIGlobalVariable(name: "ld_ptr", scope: !1, file: !2, line: 17, type: !5, isLocal: false, isDefinition: true)
+!0 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ld_ptr", scope: !1, file: !2, line: 17, type: !5, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 4.0.0 (trunk 281495)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "fp128-g.c", directory: "/disk5/chh/Debug/ld.loop")
 !3 = !{}
 !4 = !{!0}
 !5 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64, align: 64)
 !6 = !DIBasicType(name: "long double", size: 128, align: 128, encoding: DW_ATE_float)
 !7 = !{i32 2, !"Dwarf Version", i32 4}
 !8 = !{i32 2, !"Debug Info Version", i32 3}

test/CodeGen/X86/fpstack-debuginstr-kill.ll

 !14 = !DIDerivedType(tag: DW_TAG_typedef, name: "fpu_extended", line: 3, file: !5, baseType: !15)
 !15 = !DIDerivedType(tag: DW_TAG_typedef, name: "fpu_register", line: 2, file: !5, baseType: !16)
 !16 = !DIDerivedType(tag: DW_TAG_typedef, name: "uae_f64", line: 1, file: !5, baseType: !17)
 !17 = !DIBasicType(tag: DW_TAG_base_type, name: "long double", size: 128, align: 128, encoding: DW_ATE_float)
 !18 = !DILocalVariable(name: "a", line: 15, scope: !4, file: !6, type: !19)
 !19 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !20 = !DILocalVariable(name: "value", line: 16, scope: !4, file: !6, type: !14)
 !21 = !{!22, !23}
-!22 = !DIGlobalVariable(name: "g1", line: 5, isLocal: false, isDefinition: true, scope: null, file: !6, type: !14)
-!23 = !DIGlobalVariable(name: "g2", line: 6, isLocal: false, isDefinition: true, scope: null, file: !6, type: !19)
+!22 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "g1", line: 5, isLocal: false, isDefinition: true, scope: null, file: !6, type: !14))
+!23 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "g2", line: 6, isLocal: false, isDefinition: true, scope: null, file: !6, type: !19))
 !24 = !{i32 2, !"Dwarf Version", i32 2}
 !25 = !{i32 2, !"Debug Info Version", i32 3}

test/CodeGen/X86/misched-code-difference-with-debug.ll

 !13 = distinct !DISubprogram(name: "test_with_debug", linkageName: "test_with_debug", line: 6, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 6, file: !1, scope: !14, type: !15, variables: !17)
 !14 = !DIFile(filename: "test.cpp", directory: "")
 !15 = !DISubroutineType(types: !16)
 !16 = !{null}
 !17 = !{!18, !19}
 !18 = !DILocalVariable(name: "c", line: 7, scope: !13, file: !14, type: !4)
 !19 = !DILocalVariable(name: "lc", line: 8, scope: !13, file: !14, type: !11)
 !20 = !{!21}
-!21 = !DIGlobalVariable(name: "argc", line: 1, isLocal: false, isDefinition: true, scope: null, file: !14, type: !11)
+!21 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "argc", line: 1, isLocal: false, isDefinition: true, scope: null, file: !14, type: !11))
 !22 = !{i32 2, !"Dwarf Version", i32 4}
 !23 = !{i32 2, !"Debug Info Version", i32 3}
 !25 = !DILocation(line: 8, column: 3, scope: !13)
 !29 = !DIExpression()

test/CodeGen/X86/null-streamer.ll

 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: " ", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !9, imports: !2)
 !1 = !DIFile(filename: "file.c", directory: "")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 2, file: !1, scope: !1, type: !6, variables: !2)
 !6 = !DISubroutineType(types: !7)
 !7 = !{!8}
 !8 = !DIBasicType(tag: DW_TAG_base_type, size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{!10}
-!10 = !DIGlobalVariable(name: "i", linkageName: "_ZL1i", line: 1, isLocal: true, isDefinition: true, scope: null, file: !1, type: !8)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", linkageName: "_ZL1i", line: 1, isLocal: true, isDefinition: true, scope: null, file: !1, type: !8))
 !11 = !{i32 2, !"Dwarf Version", i32 3}
 !13 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/AArch64/big-endian.ll

 ; RUN: llc %s -filetype=asm -o -
 
 target datalayout = "E-m:e-i64:64-i128:128-n32:64-S128"
 target triple = "aarch64_be--none-eabi"
 
 @a = common global i32 0, align 4, !dbg !4
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!8, !9}
 !llvm.ident = !{!10}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "-", directory: "/work/validation")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !7)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !7))
 !5 = !DIFile(filename: "<stdin>", directory: "/work/validation")
 !6 = !{!"<stdin>", !"/work/validation"}
 !7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !8 = !{i32 2, !"Dwarf Version", i32 4}
 !9 = !{i32 2, !"Debug Info Version", i32 3}
 !10 = !{!"clang version 3.6.0 "}

test/DebugInfo/AArch64/bitfields.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!13, !14, !15}
 !llvm.ident = !{!16}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "bitfields.c", directory: "/")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "b", scope: !0, file: !5, line: 8, type: !6, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", scope: !0, file: !5, line: 8, type: !6, isLocal: false, isDefinition: true))
 !5 = !DIFile(filename: "bitfields.c", directory: "/")
 !6 = !DICompositeType(tag: DW_TAG_structure_type, name: "bitfield", file: !5, line: 1, size: 96, elements: !7)
 !7 = !{!8, !10, !11, !12}
 !8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !5, line: 2, baseType: !9, size: 2)
 !9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 !10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !5, line: 3, baseType: !9, size: 32, offset: 32)
 !11 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !6, file: !5, line: 4, baseType: !9, size: 1, offset: 64)
 !12 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !6, file: !5, line: 5, baseType: !9, size: 28, offset: 65)
 !13 = !{i32 2, !"Dwarf Version", i32 2}
 !14 = !{i32 2, !"Debug Info Version", i32 3}
 !15 = !{i32 1, !"PIC Level", i32 2}
 !16 = !{!"clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)"}

test/DebugInfo/AArch64/frameindices.ll

 !33 = !DILocalVariable(name: "p1", line: 17, arg: 1, scope: !31, file: !26, type: !4)
 !34 = distinct !DISubprogram(name: "f16", linkageName: "_Z3f16v", line: 18, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 18, file: !5, scope: !26, type: !35, variables: !37)
 !35 = !DISubroutineType(types: !36)
 !36 = !{null}
 !37 = !{!38, !39}
 !38 = !DILocalVariable(name: "c", line: 19, scope: !34, file: !26, type: !4)
 !39 = !DILocalVariable(name: "d", line: 20, scope: !34, file: !26, type: !14)
 !40 = !{!41, !42}
-!41 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !26, type: !20)
-!42 = !DIGlobalVariable(name: "b", line: 7, isLocal: false, isDefinition: true, scope: null, file: !26, type: !12)
+!41 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !26, type: !20))
+!42 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", line: 7, isLocal: false, isDefinition: true, scope: null, file: !26, type: !12))
 !43 = !{i32 2, !"Dwarf Version", i32 2}
 !44 = !{i32 2, !"Debug Info Version", i32 3}
 !45 = !{!"clang version 3.7.0 "}
 !46 = !DIExpression(DW_OP_deref)
 !47 = !DILocation(line: 13, column: 12, scope: !25)
 !48 = !DILocation(line: 14, column: 37, scope: !25)
 !49 = !{!50, !50, i64 0}
 !50 = !{!"long", !51, i64 0}

test/DebugInfo/ARM/big-endian-bitfield.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!12, !13, !14}
 !llvm.ident = !{!15}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 267633)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "bitfield.c", directory: "/Volumes/Data/llvm")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "s", scope: !0, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s", scope: !0, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true))
 !5 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !1, line: 1, size: 32, elements: !6)
 !6 = !{!7, !9, !10, !11}
 ; CHECK: DW_TAG_member
 ; CHECK-NEXT: DW_AT_name{{.*}}"j"
 ; CHECK-NOT:  DW_TAG
 ; CHECK:      DW_AT_data_bit_offset      [DW_FORM_data1]  (0x00)
 !7 = !DIDerivedType(tag: DW_TAG_member, name: "j", scope: !5, file: !1, line: 2, baseType: !8, size: 5)
 !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)

test/DebugInfo/ARM/bitfield.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!11, !12, !13, !14, !15}
 !llvm.ident = !{!16}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "test.i", directory: "/")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true))
 !5 = !DICompositeType(tag: DW_TAG_structure_type, file: !1, line: 1, size: 48, align: 8, elements: !6)
 !6 = !{!7, !9}
 !7 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !5, file: !1, line: 2, baseType: !8, size: 8, align: 8)
 !8 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !9 = !DIDerivedType(tag: DW_TAG_member, name: "reserved", scope: !5, file: !1, line: 4, baseType: !10, size: 28, align: 32, offset: 12)
 !10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !11 = !{i32 2, !"Dwarf Version", i32 2}
 !12 = !{i32 2, !"Debug Info Version", i32 3}
 !13 = !{i32 1, !"wchar_size", i32 4}
 !14 = !{i32 1, !"min_enum_size", i32 4}
 !15 = !{i32 1, !"PIC Level", i32 2}
 !16 = !{!"clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)"}

test/DebugInfo/ARM/multiple-constant-uses-drops-dbgloc.ll

 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "", isOptimized: false, emissionKind: FullDebug)
 !1 = !DIFile(filename: "test.c", directory: "/home/user/clang/build")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "proc", scope: !1, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
 !5 = !DISubroutineType(types: !6)
 !6 = !{null}
 !7 = !{!8, !10}
-!8 = !DIGlobalVariable(name: "ch", scope: !0, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true)
+!8 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ch", scope: !0, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true))
 !9 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
-!10 = !DIGlobalVariable(name: "b", scope: !0, file: !1, line: 2, type: !11, isLocal: false, isDefinition: true)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", scope: !0, file: !1, line: 2, type: !11, isLocal: false, isDefinition: true))
 !11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !12 = !{i32 2, !"Dwarf Version", i32 4}
 !13 = !{i32 2, !"Debug Info Version", i32 3}
 !14 = !{i32 1, !"wchar_size", i32 4}
 !15 = !{i32 1, !"min_enum_size", i32 4}
 !16 = !{!"clang version 3.7.0 (http://llvm.org/git/clang.git 9b0abb9df531ef7928c8182120e1869affca17d5) (http://llvm.org/git/llvm.git b1e759524dd94f7ce1e24935daed8383927e96c1)"}
 !17 = !DILocation(line: 6, column: 8, scope: !4)
 !18 = !DILocation(line: 7, column: 7, scope: !4)
 !19 = !DILocation(line: 8, column: 1, scope: !4)

test/DebugInfo/ARM/tls.ll

 
 ; TODO: Add expected output for -emulated-tls tests.
 ; EMU-NOT: .long x(tlsldo)
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "tls.c", directory: "/tmp")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "x", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6))
 !5 = !DIFile(filename: "tls.c", directory: "/tmp")
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = !{i32 2, !"Dwarf Version", i32 4}
 !8 = !{i32 1, !"Debug Info Version", i32 3}
 !9 = !{!"clang version 3.5 "}

test/DebugInfo/COFF/anonymous-struct.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!14, !15}
 !llvm.ident = !{!16}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 274261) (llvm/trunk 274262)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "-", directory: "/usr/local/google/home/majnemer/llvm/src")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "s", scope: !0, file: !5, line: 5, type: !6, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s", scope: !0, file: !5, line: 5, type: !6, isLocal: false, isDefinition: true))
 !5 = !DIFile(filename: "<stdin>", directory: "/usr/local/google/home/majnemer/llvm/src")
 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !5, line: 2, size: 64, align: 32, elements: !7)
 !7 = !{!8, !10}
 !8 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !6, file: !5, line: 3, baseType: !9, size: 32, align: 32)
 !9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !DIDerivedType(tag: DW_TAG_member, scope: !6, file: !5, line: 4, baseType: !11, size: 32, align: 32, offset: 32)
 !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, scope: !6, file: !5, line: 4, size: 32, align: 32, elements: !12)
 !12 = !{!13}
 !13 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !11, file: !5, line: 4, baseType: !9, size: 32, align: 32)
 !14 = !{i32 2, !"CodeView", i32 1}
 !15 = !{i32 2, !"Debug Info Version", i32 3}
 !16 = !{!"clang version 3.9.0 (trunk 274261) (llvm/trunk 274262)"}

test/DebugInfo/COFF/big-type.ll

 !5695 = !DIEnumerator(name: "EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE5690", value: 5689)
 !5696 = !DIEnumerator(name: "EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE5691", value: 5690)
 !5697 = !DIEnumerator(name: "EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE5692", value: 5691)
 !5698 = !DIEnumerator(name: "EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE5693", value: 5692)
 !5699 = !DIEnumerator(name: "EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE5694", value: 5693)
 !5700 = !DIEnumerator(name: "EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE5695", value: 5694)
 !5701 = !DIEnumerator(name: "EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE5696", value: 5695)
 !5702 = !{!5703}
-!5703 = distinct !DIGlobalVariable(name: "x", linkageName: "\01?x@@3W4BigThing@@A", scope: !0, file: !1, line: 5698, type: !3, isLocal: false, isDefinition: true)
+!5703 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", linkageName: "\01?x@@3W4BigThing@@A", scope: !0, file: !1, line: 5698, type: !3, isLocal: false, isDefinition: true))
 !5704 = !{i32 2, !"CodeView", i32 1}
 !5705 = !{i32 2, !"Debug Info Version", i32 3}
 !5706 = !{i32 1, !"PIC Level", i32 2}
 !5707 = !{!"clang version 3.9.0 (trunk 273198) (llvm/trunk 273223)"}

test/DebugInfo/COFF/bitfields.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!33, !34, !35}
 !llvm.ident = !{!36}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 273812) (llvm/trunk 273843)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "-", directory: "/usr/local/google/home/majnemer/llvm/src")
 !2 = !{}
 !3 = !{!4, !10, !29}
-!4 = distinct !DIGlobalVariable(name: "s0", scope: !0, file: !5, line: 7, type: !6, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s0", scope: !0, file: !5, line: 7, type: !6, isLocal: false, isDefinition: true))
 !5 = !DIFile(filename: "<stdin>", directory: "/usr/local/google/home/majnemer/llvm/src")
 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !5, line: 3, size: 24, elements: !7)
 !7 = !{!8}
 !8 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !6, file: !5, line: 6, baseType: !9, size: 8, offset: 16, flags: DIFlagBitField, extraData: i64 8)
 !9 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
-!10 = distinct !DIGlobalVariable(name: "s1", scope: !0, file: !5, line: 18, type: !11, isLocal: false, isDefinition: true)
+!10 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s1", scope: !0, file: !5, line: 18, type: !11, isLocal: false, isDefinition: true))
 !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S1", file: !5, line: 10, size: 128, elements: !12)
 !12 = !{!13, !18, !19, !21, !22, !23, !28}
 !13 = !DIDerivedType(tag: DW_TAG_member, name: "x1", scope: !11, file: !5, line: 11, baseType: !14, size: 16)
 !14 = !DICompositeType(tag: DW_TAG_array_type, baseType: !15, size: 16, elements: !16)
 !15 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
 !16 = !{!17}
 !17 = !DISubrange(count: 2)
 !18 = !DIDerivedType(tag: DW_TAG_member, name: "x2", scope: !11, file: !5, line: 12, baseType: !15, size: 8, offset: 16)
 !19 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !11, file: !5, line: 13, baseType: !20, size: 23, offset: 24, flags: DIFlagBitField, extraData: i64 24)
 !20 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 !21 = !DIDerivedType(tag: DW_TAG_member, name: "z", scope: !11, file: !5, line: 14, baseType: !20, size: 23, offset: 56, flags: DIFlagBitField, extraData: i64 56)
 !22 = !DIDerivedType(tag: DW_TAG_member, name: "w", scope: !11, file: !5, line: 15, baseType: !20, size: 2, offset: 79, flags: DIFlagBitField, extraData: i64 56)
 !23 = !DIDerivedType(tag: DW_TAG_member, name: "v", scope: !11, file: !5, line: 16, baseType: !24, size: 24, offset: 88)
 !24 = distinct !DICompositeType(tag: DW_TAG_structure_type, scope: !11, file: !5, line: 16, size: 24, elements: !25)
 !25 = !{!26, !27}
 !26 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !24, file: !5, line: 16, baseType: !15, size: 8)
 !27 = !DIDerivedType(tag: DW_TAG_member, name: "s", scope: !24, file: !5, line: 16, baseType: !9, size: 16, offset: 8)
 !28 = !DIDerivedType(tag: DW_TAG_member, name: "u", scope: !11, file: !5, line: 17, baseType: !9, size: 3, offset: 112, flags: DIFlagBitField, extraData: i64 112)
-!29 = distinct !DIGlobalVariable(name: "s2", scope: !0, file: !5, line: 24, type: !30, isLocal: false, isDefinition: true)
+!29 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s2", scope: !0, file: !5, line: 24, type: !30, isLocal: false, isDefinition: true))
 !30 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S2", file: !5, line: 21, size: 32, elements: !31)
 !31 = !{!32}
 !32 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !30, file: !5, line: 23, baseType: !20, size: 1, flags: DIFlagBitField, extraData: i64 0)
 !33 = !{i32 2, !"CodeView", i32 1}
 !34 = !{i32 2, !"Debug Info Version", i32 3}
 !35 = !{i32 1, !"PIC Level", i32 2}
 !36 = !{!"clang version 3.9.0 (trunk 273812) (llvm/trunk 273843)"}

test/DebugInfo/COFF/enum.ll

 !1 = !DIFile(filename: "-", directory: "/")
 !2 = !{!3}
 !3 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "E", file: !4, line: 1, baseType: !5, size: 32, align: 32, elements: !6)
 !4 = !DIFile(filename: "<stdin>", directory: "/")
 !5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !6 = !{!7}
 !7 = !DIEnumerator(name: "BLAH", value: 0)
 !8 = !{!9}
-!9 = distinct !DIGlobalVariable(name: "e", linkageName: "\01?e@@3W4E@@A", scope: !0, file: !4, line: 2, type: !3, isLocal: false, isDefinition: true)
+!9 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "e", linkageName: "\01?e@@3W4E@@A", scope: !0, file: !4, line: 2, type: !3, isLocal: false, isDefinition: true))
 !10 = !{i32 2, !"CodeView", i32 1}
 !11 = !{i32 2, !"Debug Info Version", i32 3}
 !12 = !{!"clang version 3.9.0 (trunk 272790) (llvm/trunk 272813)"}

test/DebugInfo/COFF/global-dllimport.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!13, !14}
 !llvm.ident = !{!15}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 272628) (llvm/trunk 272566)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "/usr/local/google/home/majnemer/Downloads/<stdin>", directory: "/usr/local/google/home/majnemer/llvm/src")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "id", linkageName: "\01?id@?$numpunct@D@@0HA", scope: !0, file: !5, line: 4, type: !6, isLocal: false, isDefinition: true, declaration: !7)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "id", linkageName: "\01?id@?$numpunct@D@@0HA", scope: !0, file: !5, line: 4, type: !6, isLocal: false, isDefinition: true, declaration: !7))
 !5 = !DIFile(filename: "/usr/local/google/home/majnemer/Downloads/t.ii", directory: "/usr/local/google/home/majnemer/llvm/src")
 !6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = !DIDerivedType(tag: DW_TAG_member, name: "id", scope: !8, file: !5, line: 2, baseType: !6, flags: DIFlagStaticMember)
 !8 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "numpunct<char>", file: !5, line: 2, size: 8, align: 8, elements: !9, templateParams: !10)
 !9 = !{!7}
 !10 = !{!11}
 !11 = !DITemplateTypeParameter(type: !12)
 !12 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !13 = !{i32 2, !"CodeView", i32 1}
 !14 = !{i32 2, !"Debug Info Version", i32 3}
 !15 = !{!"clang version 3.9.0 (trunk 272628) (llvm/trunk 272566)"}

test/DebugInfo/COFF/globals-discarded.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!35, !36, !37}
 !llvm.ident = !{!38}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 272215) (llvm/trunk 272226)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3)
 !1 = !DIFile(filename: "t.c", directory: "foo")
 !2 = !{}
 !3 = !{!4, !6}
-!4 = distinct !DIGlobalVariable(name: "_OptionsStorage", scope: !0, file: !1, line: 3, type: !5, isLocal: true, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_OptionsStorage", scope: !0, file: !1, line: 3, type: !5, isLocal: true, isDefinition: true))
 !5 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
-!6 = distinct !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 4, type: !5, isLocal: true, isDefinition: true)
+!6 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 4, type: !5, isLocal: true, isDefinition: true))
 
 !35 = !{i32 2, !"CodeView", i32 1}
 !36 = !{i32 2, !"Debug Info Version", i32 3}
 !37 = !{i32 1, !"PIC Level", i32 2}
 !38 = !{!"clang version 3.9.0 (trunk 272215) (llvm/trunk 272226)"}

test/DebugInfo/COFF/globals.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!16, !17, !18}
 !llvm.ident = !{!19}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 271937)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
 !2 = !{}
 !3 = !{!4, !6, !13, !15}
-!4 = distinct !DIGlobalVariable(name: "first", linkageName: "\01?first@@3HA", scope: !0, file: !1, line: 1, type: !5, isLocal: true, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "first", linkageName: "\01?first@@3HA", scope: !0, file: !1, line: 1, type: !5, isLocal: true, isDefinition: true))
 !5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!6 = distinct !DIGlobalVariable(name: "comdat", linkageName: "\01?comdat@?$A@X@@2HB", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, declaration: !8)
+!6 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "comdat", linkageName: "\01?comdat@?$A@X@@2HB", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, declaration: !8))
 !7 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !5)
 !8 = !DIDerivedType(tag: DW_TAG_member, name: "comdat", scope: !9, file: !1, line: 2, baseType: !7, flags: DIFlagStaticMember, extraData: i32 3)
 !9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A<void>", file: !1, line: 2, size: 8, align: 8, elements: !10, templateParams: !11)
 !10 = !{!8}
 !11 = !{!12}
 !12 = !DITemplateTypeParameter(name: "T", type: null)
-!13 = distinct !DIGlobalVariable(name: "middle", linkageName: "\01?middle@@3PEBHEB", scope: !0, file: !1, line: 3, type: !14, isLocal: false, isDefinition: true)
+!13 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "middle", linkageName: "\01?middle@@3PEBHEB", scope: !0, file: !1, line: 3, type: !14, isLocal: false, isDefinition: true))
 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64, align: 64)
-!15 = distinct !DIGlobalVariable(name: "last", linkageName: "\01?last@@3HA", scope: !0, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true)
+!15 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "last", linkageName: "\01?last@@3HA", scope: !0, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true))
 !16 = !{i32 2, !"CodeView", i32 1}
 !17 = !{i32 2, !"Debug Info Version", i32 3}
 !18 = !{i32 1, !"PIC Level", i32 2}
 !19 = !{!"clang version 3.9.0 (trunk 271937)"}

test/DebugInfo/COFF/inheritance.ll

 declare void @"\01?f@D@@UEAAXXZ"(%struct.D*) unnamed_addr #0
 
 attributes #0 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!31, !32, !33}
 !llvm.ident = !{!34}
 
-!0 = distinct !DIGlobalVariable(name: "d", linkageName: "\01?d@@3UD@@A", scope: !1, file: !5, line: 8, type: !6, isLocal: false, isDefinition: true)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "d", linkageName: "\01?d@@3UD@@A", scope: !1, file: !5, line: 8, type: !6, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 4.0.0 (http://llvm.org/git/clang.git 95626d54d6db7e13087089396a80ebaccc4ffe7c) (http://llvm.org/git/llvm.git 374b6e2fa0b230d13c0fb9ee7af69b2146bfad8a)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
 !3 = !{}
 !4 = !{!0}
 !5 = !DIFile(filename: "t.cpp", directory: "C:\5Cbuild\5Cllvm\5Cbuild")
 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "D", file: !5, line: 4, size: 448, elements: !7, vtableHolder: !6, identifier: ".?AUD@@")
 !7 = !{!8, !17, !22, !23, !24, !26, !27}
 !8 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !9, offset: 64)

test/DebugInfo/COFF/inlining-files.ll

 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !8)
 !1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
 !5 = !DISubroutineType(types: !6)
 !6 = !{null}
 !7 = distinct !DISubprogram(name: "file_change", scope: !1, file: !1, line: 2, type: !5, isLocal: true, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
 !8 = !{!9}
-!9 = !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !10, isLocal: false, isDefinition: true)
+!9 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !10, isLocal: false, isDefinition: true))
 !10 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !11)
 !11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !12 = !{i32 2, !"CodeView", i32 1}
 !13 = !{i32 2, !"Debug Info Version", i32 3}
 !14 = !{i32 1, !"PIC Level", i32 2}
 !15 = !{!"clang version 3.9.0 "}
 !16 = !DILocation(line: 8, column: 3, scope: !4)
 !17 = !{!18, !18, i64 0}

test/DebugInfo/COFF/inlining-header.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!7, !8, !9}
 !llvm.ident = !{!10}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 275430) (llvm/trunk 275433)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "x", linkageName: "\01?x@@3HC", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", linkageName: "\01?x@@3HC", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true))
 !5 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6)
 !6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = !{i32 2, !"CodeView", i32 1}
 !8 = !{i32 2, !"Debug Info Version", i32 3}
 !9 = !{i32 1, !"PIC Level", i32 2}
 !10 = !{!"clang version 3.9.0 (trunk 275430) (llvm/trunk 275433)"}
 !11 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 8, type: !12, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
 !12 = !DISubroutineType(types: !13)

test/DebugInfo/COFF/inlining-levels.ll

 !6 = !{!7}
 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !8 = distinct !DISubprogram(name: "h", linkageName: "\01?h@@YAXXZ", scope: !1, file: !1, line: 9, type: !9, isLocal: true, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
 !9 = !DISubroutineType(types: !10)
 !10 = !{null}
 !11 = distinct !DISubprogram(name: "g", linkageName: "\01?g@@YAXXZ", scope: !1, file: !1, line: 6, type: !9, isLocal: true, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
 !12 = distinct !DISubprogram(name: "f", linkageName: "\01?f@@YAXXZ", scope: !1, file: !1, line: 2, type: !9, isLocal: true, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
 !13 = !{!14}
-!14 = !DIGlobalVariable(name: "x", linkageName: "\01?x@@3HC", scope: !0, file: !1, line: 1, type: !15, isLocal: false, isDefinition: true)
+!14 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", linkageName: "\01?x@@3HC", scope: !0, file: !1, line: 1, type: !15, isLocal: false, isDefinition: true))
 !15 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
 !16 = !{i32 2, !"CodeView", i32 1}
 !17 = !{i32 2, !"Debug Info Version", i32 3}
 !18 = !{i32 1, !"PIC Level", i32 2}
 !19 = !{!"clang version 3.9.0 "}
 !20 = !DILocation(line: 4, column: 3, scope: !12, inlinedAt: !21)
 !21 = distinct !DILocation(line: 7, column: 3, scope: !11, inlinedAt: !22)
 !22 = distinct !DILocation(line: 10, column: 3, scope: !8, inlinedAt: !23)
 !23 = distinct !DILocation(line: 13, column: 3, scope: !4)
 !24 = !{!25, !25, i64 0}
 !25 = !{!"int", !26, i64 0}
 !26 = !{!"omnipotent char", !27, i64 0}
 !27 = !{!"Simple C/C++ TBAA"}
 !28 = !DILocation(line: 14, column: 1, scope: !4)

test/DebugInfo/COFF/int8-char-type.ll

 
 @x = global i8 0, align 1, !dbg !0
 @y = global i8 0, align 1, !dbg !5
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!11, !12, !13}
 !llvm.ident = !{!14}
 
-!0 = distinct !DIGlobalVariable(name: "x", scope: !1, file: !6, line: 4, type: !9, isLocal: false, isDefinition: true)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", scope: !1, file: !6, line: 4, type: !9, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 4.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "-", directory: "C:\5Csrc\5Cllvm\5Cbuild")
 !3 = !{}
 !4 = !{!0, !5}
-!5 = distinct !DIGlobalVariable(name: "y", scope: !1, file: !6, line: 5, type: !7, isLocal: false, isDefinition: true)
+!5 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "y", scope: !1, file: !6, line: 5, type: !7, isLocal: false, isDefinition: true))
 !6 = !DIFile(filename: "<stdin>", directory: "C:\5Csrc\5Cllvm\5Cbuild")
 !7 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !6, line: 3, baseType: !8)
 
 ; Manually modified to use DW_ATE_unsigned
 !8 = !DIBasicType(size: 8, align: 8, encoding: DW_ATE_unsigned)
 
 !9 = !DIDerivedType(tag: DW_TAG_typedef, name: "int8_t", file: !6, line: 2, baseType: !10)
 
 ; Manually modified to use DW_ATE_signed
 !10 = !DIBasicType(size: 8, align: 8, encoding: DW_ATE_signed)
 
 !11 = !{i32 2, !"CodeView", i32 1}
 !12 = !{i32 2, !"Debug Info Version", i32 3}
 !13 = !{i32 1, !"PIC Level", i32 2}
 !14 = !{!"clang version 4.0.0 "}

test/DebugInfo/COFF/long-type-name.ll

 %struct.Foo = type { i8 }
 
 @"\01?f@@3UFoo@@A" = global %struct.Foo zeroinitializer, align 1, !dbg !0
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!7, !8}
 !llvm.ident = !{!9}
 
-!0 = distinct !DIGlobalVariable(name: "f", linkageName: "\01?f@@3UFoo@@A", scope: !1, file: !5, line: 1, type: !6, isLocal: false, isDefinition: true)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "f", linkageName: "\01?f@@3UFoo@@A", scope: !1, file: !5, line: 1, type: !6, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 4.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "<stdin>", directory: "C:\5Csrc\5Cllvm\5Cbuild")
 !3 = !{}
 !4 = !{!0}
 !5 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Cllvm\5Cbuild")
 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: 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AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA")
 !7 = !{i32 2, !"CodeView", i32 1}
 !8 = !{i32 2, !"Debug Info Version", i32 3}
 !9 = !{!"clang version 4.0.0 "}

test/DebugInfo/COFF/register-variables.ll

 !15 = distinct !DILexicalBlock(scope: !12, file: !1, line: 14, column: 10)
 !16 = distinct !DISubprogram(name: "inlineinc", scope: !1, file: !1, line: 4, type: !17, isLocal: true, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !19)
 !17 = !DISubroutineType(types: !18)
 !18 = !{!7, !7}
 !19 = !{!20, !21}
 !20 = !DILocalVariable(name: "a", arg: 1, scope: !16, file: !1, line: 4, type: !7)
 !21 = !DILocalVariable(name: "b", scope: !16, file: !1, line: 5, type: !7)
 !22 = !{!23}
-!23 = !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !24, isLocal: false, isDefinition: true)
+!23 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !24, isLocal: false, isDefinition: true))
 !24 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
 !25 = !{i32 2, !"CodeView", i32 1}
 !26 = !{i32 2, !"Debug Info Version", i32 3}
 !27 = !{i32 1, !"PIC Level", i32 2}
 !28 = !{!"clang version 3.9.0 (trunk 260617) (llvm/trunk 260619)"}
 !29 = !DIExpression()
 !30 = !DILocation(line: 9, column: 12, scope: !4)
 !31 = !DILocation(line: 10, column: 7, scope: !12)

test/DebugInfo/COFF/scopes.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!15, !16, !17}
 !llvm.ident = !{!18}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "g", linkageName: "\01?g@bar@foo@@3UGlobalRecord@12@A", scope: !5, file: !1, line: 12, type: !7, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "g", linkageName: "\01?g@bar@foo@@3UGlobalRecord@12@A", scope: !5, file: !1, line: 12, type: !7, isLocal: false, isDefinition: true))
 !5 = !DINamespace(name: "bar", scope: !6, file: !1, line: 2)
 !6 = !DINamespace(name: "foo", scope: null, file: !1, line: 1)
 !7 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "GlobalRecord", scope: !5, file: !1, line: 9, size: 32, align: 32, elements: !8, identifier: ".?AUGlobalRecord@bar@foo@@")
 !8 = !{!9, !11}
 !9 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !7, file: !1, line: 10, baseType: !10, size: 32, align: 32)
 !10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !11 = !DISubprogram(name: "method", linkageName: "\01?method@GlobalRecord@bar@foo@@QEAAXXZ", scope: !7, file: !1, line: 11, type: !12, isLocal: false, isDefinition: false, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: false)
 !12 = !DISubroutineType(types: !13)

test/DebugInfo/COFF/types-array-advanced.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!28, !29}
 !llvm.ident = !{!30}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 273874)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "t.cpp", directory: "/")
 !2 = !{}
 !3 = !{!4, !11, !20, !21}
-!4 = distinct !DIGlobalVariable(name: "multi_dim_arr", linkageName: "\01?multi_dim_arr@@3PAY146DA", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "multi_dim_arr", linkageName: "\01?multi_dim_arr@@3PAY146DA", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true))
 !5 = !DICompositeType(tag: DW_TAG_array_type, baseType: !6, size: 560, align: 8, elements: !7)
 !6 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !7 = !{!8, !9, !10}
 !8 = !DISubrange(count: 2)
 !9 = !DISubrange(count: 5)
 !10 = !DISubrange(count: 7)
-!11 = distinct !DIGlobalVariable(name: "p_incomplete_struct_arr", linkageName: "\01?p_incomplete_struct_arr@@3PAY02Uincomplete_struct@@A", scope: !0, file: !1, line: 3, type: !12, isLocal: false, isDefinition: true)
+!11 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "p_incomplete_struct_arr", linkageName: "\01?p_incomplete_struct_arr@@3PAY02Uincomplete_struct@@A", scope: !0, file: !1, line: 3, type: !12, isLocal: false, isDefinition: true))
 !12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 32, align: 32)
 !13 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, elements: !18)
 !14 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "incomplete_struct", file: !1, line: 4, size: 32, align: 32, elements: !15, identifier: ".?AUincomplete_struct@@")
 !15 = !{!16}
 !16 = !DIDerivedType(tag: DW_TAG_member, name: "s1", scope: !14, file: !1, line: 5, baseType: !17, size: 32, align: 32)
 !17 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !18 = !{!19}
 !19 = !DISubrange(count: 3)
-!20 = distinct !DIGlobalVariable(name: "incomplete_struct_arr", linkageName: "\01?incomplete_struct_arr@@3PAUincomplete_struct@@A", scope: !0, file: !1, line: 6, type: !13, isLocal: false, isDefinition: true)
-!21 = distinct !DIGlobalVariable(name: "typedef_arr", linkageName: "\01?typedef_arr@@3SDHD", scope: !0, file: !1, line: 14, type: !22, isLocal: false, isDefinition: true)
+!20 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "incomplete_struct_arr", linkageName: "\01?incomplete_struct_arr@@3PAUincomplete_struct@@A", scope: !0, file: !1, line: 6, type: !13, isLocal: false, isDefinition: true))
+!21 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "typedef_arr", linkageName: "\01?typedef_arr@@3SDHD", scope: !0, file: !1, line: 14, type: !22, isLocal: false, isDefinition: true))
 !22 = !DICompositeType(tag: DW_TAG_array_type, baseType: !23, size: 128, align: 32, elements: !26)
 !23 = !DIDerivedType(tag: DW_TAG_typedef, name: "T_INT", file: !1, line: 13, baseType: !24)
 !24 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !25)
 !25 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !17)
 !26 = !{!27}
 !27 = !DISubrange(count: 4)
 !28 = !{i32 2, !"CodeView", i32 1}
 !29 = !{i32 2, !"Debug Info Version", i32 3}

test/DebugInfo/COFF/types-nested-class.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!8, !9}
 !llvm.ident = !{!10}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "hello.cpp", directory: "D:\5Csrc\5Chello")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "a", linkageName: "\01?a@@3UA@@A", scope: !0, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", linkageName: "\01?a@@3UA@@A", scope: !0, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true))
 !5 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !1, line: 1, size: 8, align: 8, elements: !6, identifier: ".?AUA@@")
 !6 = !{!7}
 !7 = !DICompositeType(tag: DW_TAG_structure_type, name: "Nested", scope: !5, file: !1, line: 2, size: 8, align: 8, flags: DIFlagFwdDecl, identifier: ".?AUNested@A@@")
 !8 = !{i32 2, !"CodeView", i32 1}
 !9 = !{i32 2, !"Debug Info Version", i32 3}
 !10 = !{!"clang version 3.9.0 "}

test/DebugInfo/COFF/types-ptr-to-member.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!56, !57, !58}
 !llvm.ident = !{!59}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 273036) (llvm/trunk 273053)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
 !2 = !{}
 !3 = !{!4, !10, !20, !23, !26, !31, !36, !41, !46, !50}
-!4 = distinct !DIGlobalVariable(name: "pmd_a", linkageName: "\01?pmd_a@@3PEQA@@HEQ1@", scope: !0, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "pmd_a", linkageName: "\01?pmd_a@@3PEQA@@HEQ1@", scope: !0, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true))
 !5 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !6, size: 32, flags: DIFlagSingleInheritance, extraData: !7)
 !6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !1, line: 1, size: 32, align: 32, elements: !8, identifier: ".?AUA@@")
 !8 = !{!9}
 !9 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !7, file: !1, line: 1, baseType: !6, size: 32, align: 32)
-!10 = distinct !DIGlobalVariable(name: "pmd_b", linkageName: "\01?pmd_b@@3PEQC@@HEQ1@", scope: !0, file: !1, line: 7, type: !11, isLocal: false, isDefinition: true)
+!10 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "pmd_b", linkageName: "\01?pmd_b@@3PEQC@@HEQ1@", scope: !0, file: !1, line: 7, type: !11, isLocal: false, isDefinition: true))
 !11 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !6, size: 32, flags: DIFlagMultipleInheritance, extraData: !12)
 !12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C", file: !1, line: 3, size: 96, align: 32, elements: !13, identifier: ".?AUC@@")
 !13 = !{!14, !15, !19}
 !14 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !12, baseType: !7)
 !15 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !12, baseType: !16, offset: 32)
 !16 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "B", file: !1, line: 2, size: 32, align: 32, elements: !17, identifier: ".?AUB@@")
 !17 = !{!18}
 !18 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !16, file: !1, line: 2, baseType: !6, size: 32, align: 32)
 !19 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !12, file: !1, line: 3, baseType: !6, size: 32, align: 32, offset: 64)
-!20 = distinct !DIGlobalVariable(name: "pmd_c", linkageName: "\01?pmd_c@@3PEQD@@HEQ1@", scope: !0, file: !1, line: 8, type: !21, isLocal: false, isDefinition: true)
+!20 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "pmd_c", linkageName: "\01?pmd_c@@3PEQD@@HEQ1@", scope: !0, file: !1, line: 8, type: !21, isLocal: false, isDefinition: true))
 !21 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !6, size: 64, flags: DIFlagVirtualInheritance, extraData: !22)
 !22 = !DICompositeType(tag: DW_TAG_structure_type, name: "D", file: !1, line: 4, size: 256, align: 64, flags: DIFlagFwdDecl, identifier: ".?AUD@@")
-!23 = distinct !DIGlobalVariable(name: "pmd_d", linkageName: "\01?pmd_d@@3PEQE@@HEQ1@", scope: !0, file: !1, line: 9, type: !24, isLocal: false, isDefinition: true)
+!23 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "pmd_d", linkageName: "\01?pmd_d@@3PEQE@@HEQ1@", scope: !0, file: !1, line: 9, type: !24, isLocal: false, isDefinition: true))
 !24 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !6, size: 96, extraData: !25)
 !25 = !DICompositeType(tag: DW_TAG_structure_type, name: "E", file: !1, line: 5, flags: DIFlagFwdDecl, identifier: ".?AUE@@")
-!26 = distinct !DIGlobalVariable(name: "pmf_a", linkageName: "\01?pmf_a@@3P8A@@EAAXXZEQ1@", scope: !0, file: !1, line: 10, type: !27, isLocal: false, isDefinition: true)
+!26 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "pmf_a", linkageName: "\01?pmf_a@@3P8A@@EAAXXZEQ1@", scope: !0, file: !1, line: 10, type: !27, isLocal: false, isDefinition: true))
 !27 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !28, size: 64, flags: DIFlagSingleInheritance, extraData: !7)
 !28 = !DISubroutineType(types: !29)
 !29 = !{null, !30}
 !30 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
-!31 = distinct !DIGlobalVariable(name: "pmf_b", linkageName: "\01?pmf_b@@3P8C@@EAAXXZEQ1@", scope: !0, file: !1, line: 11, type: !32, isLocal: false, isDefinition: true)
+!31 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "pmf_b", linkageName: "\01?pmf_b@@3P8C@@EAAXXZEQ1@", scope: !0, file: !1, line: 11, type: !32, isLocal: false, isDefinition: true))
 !32 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !33, size: 128, flags: DIFlagMultipleInheritance, extraData: !12)
 !33 = !DISubroutineType(types: !34)
 !34 = !{null, !35}
 !35 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
-!36 = distinct !DIGlobalVariable(name: "pmf_c", linkageName: "\01?pmf_c@@3P8D@@EAAXXZEQ1@", scope: !0, file: !1, line: 12, type: !37, isLocal: false, isDefinition: true)
+!36 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "pmf_c", linkageName: "\01?pmf_c@@3P8D@@EAAXXZEQ1@", scope: !0, file: !1, line: 12, type: !37, isLocal: false, isDefinition: true))
 !37 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !38, size: 128, flags: DIFlagVirtualInheritance, extraData: !22)
 !38 = !DISubroutineType(types: !39)
 !39 = !{null, !40}
 !40 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !22, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
-!41 = distinct !DIGlobalVariable(name: "pmf_d", linkageName: "\01?pmf_d@@3P8E@@EAAXXZEQ1@", scope: !0, file: !1, line: 13, type: !42, isLocal: false, isDefinition: true)
+!41 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "pmf_d", linkageName: "\01?pmf_d@@3P8E@@EAAXXZEQ1@", scope: !0, file: !1, line: 13, type: !42, isLocal: false, isDefinition: true))
 !42 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !43, size: 192, extraData: !25)
 !43 = !DISubroutineType(types: !44)
 !44 = !{null, !45}
 !45 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !25, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
-!46 = distinct !DIGlobalVariable(name: "ppmd", linkageName: "\01?ppmd@@3PEAPEQIncomplete@@HEA", scope: !0, file: !1, line: 15, type: !47, isLocal: false, isDefinition: true)
+!46 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ppmd", linkageName: "\01?ppmd@@3PEAPEQIncomplete@@HEA", scope: !0, file: !1, line: 15, type: !47, isLocal: false, isDefinition: true))
 !47 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !48, size: 64, align: 64)
 !48 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !6, extraData: !49)
 !49 = !DICompositeType(tag: DW_TAG_structure_type, name: "Incomplete", file: !1, line: 14, flags: DIFlagFwdDecl, identifier: ".?AUIncomplete@@")
-!50 = distinct !DIGlobalVariable(name: "ppmf", linkageName: "\01?ppmf@@3PEAP8Incomplete@@EAAXXZEA", scope: !0, file: !1, line: 16, type: !51, isLocal: false, isDefinition: true)
+!50 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ppmf", linkageName: "\01?ppmf@@3PEAP8Incomplete@@EAAXXZEA", scope: !0, file: !1, line: 16, type: !51, isLocal: false, isDefinition: true))
 !51 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !52, size: 64, align: 64)
 !52 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !53, extraData: !49)
 !53 = !DISubroutineType(types: !54)
 !54 = !{null, !55}
 !55 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !49, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
 !56 = !{i32 2, !"CodeView", i32 1}
 !57 = !{i32 2, !"Debug Info Version", i32 3}
 !58 = !{i32 1, !"PIC Level", i32 2}
 !59 = !{!"clang version 3.9.0 (trunk 273036) (llvm/trunk 273053)"}

test/DebugInfo/COFF/udts.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!10, !11, !12}
 !llvm.ident = !{!13}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "u", linkageName: "\01?u@@3UU@@A", scope: !0, file: !1, line: 13, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "u", linkageName: "\01?u@@3UU@@A", scope: !0, file: !1, line: 13, type: !5, isLocal: false, isDefinition: true))
 !5 = !DIDerivedType(tag: DW_TAG_typedef, name: "U", file: !1, line: 12, baseType: !6)
 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !1, line: 12, size: 32, align: 32, elements: !7, identifier: ".?AUU@@")
 !7 = !{!8}
 !8 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !6, file: !1, line: 12, baseType: !9, size: 32, align: 32)
 !9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !{i32 2, !"CodeView", i32 1}
 !11 = !{i32 2, !"Debug Info Version", i32 3}
 !12 = !{i32 1, !"PIC Level", i32 2}

test/DebugInfo/COFF/virtual-method-kinds.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!35, !36, !37}
 !llvm.ident = !{!38}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "p", linkageName: "\01?p@@3PEAUC@@EA", scope: !0, file: !1, line: 13, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "p", linkageName: "\01?p@@3PEAUC@@EA", scope: !0, file: !1, line: 13, type: !5, isLocal: false, isDefinition: true))
 !5 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64, align: 64)
 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C", file: !1, line: 9, size: 64, align: 64, elements: !7, vtableHolder: !12, identifier: ".?AUC@@")
 !7 = !{!8, !30, !34}
 !8 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !9)
 !9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "B", file: !1, line: 5, size: 64, align: 64, elements: !10, vtableHolder: !12, identifier: ".?AUB@@")
 !10 = !{!11, !25, !29}
 !11 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !9, baseType: !12)
 !12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !1, line: 1, size: 64, align: 64, elements: !13, vtableHolder: !12, identifier: ".?AUA@@")

test/DebugInfo/COFF/vtable-optzn-array.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!22, !23}
 !llvm.ident = !{!24}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 4.0.0 (trunk 281056) (llvm/trunk 281051)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "<stdin>", directory: "C:\5Csrc\5Cllvm\5Cbuild")
 !2 = !{}
 !3 = !{!4, !10}
-!4 = distinct !DIGlobalVariable(name: "force_fwd_decl", linkageName: "\01?force_fwd_decl@@3UGetFwdDecl@@A", scope: !0, file: !5, line: 5, type: !6, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "force_fwd_decl", linkageName: "\01?force_fwd_decl@@3UGetFwdDecl@@A", scope: !0, file: !5, line: 5, type: !6, isLocal: false, isDefinition: true))
 !5 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Cllvm\5Cbuild")
 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "GetFwdDecl", file: !5, line: 2, size: 8, align: 8, elements: !7, identifier: ".?AUGetFwdDecl@@")
 !7 = !{!8}
 !8 = !DIDerivedType(tag: DW_TAG_member, name: "format", scope: !6, file: !5, line: 3, baseType: !9, flags: DIFlagStaticMember)
 !9 = !DICompositeType(tag: DW_TAG_structure_type, name: "UnicodeString", file: !5, line: 1, flags: DIFlagFwdDecl, identifier: ".?AUUnicodeString@@")
-!10 = distinct !DIGlobalVariable(name: "require_complete", linkageName: "\01?require_complete@@3UUseCompleteType@@A", scope: !0, file: !5, line: 15, type: !11, isLocal: false, isDefinition: true)
+!10 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "require_complete", linkageName: "\01?require_complete@@3UUseCompleteType@@A", scope: !0, file: !5, line: 15, type: !11, isLocal: false, isDefinition: true))
 !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "UseCompleteType", file: !5, line: 10, size: 64, align: 64, elements: !12, identifier: ".?AUUseCompleteType@@")
 !12 = !{!13, !17, !21}
 !13 = !DIDerivedType(tag: DW_TAG_member, name: "currencySpcAfterSym", scope: !11, file: !5, line: 13, baseType: !14, size: 64, align: 64)
 !14 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 64, align: 64, elements: !15)
 !15 = !{!16}
 !16 = !DISubrange(count: 1)
 !17 = !DISubprogram(name: "UseCompleteType", scope: !11, file: !5, line: 11, type: !18, isLocal: false, isDefinition: false, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: false)
 !18 = !DISubroutineType(types: !19)

test/DebugInfo/Generic/2009-11-05-DeadGlobalVariable.ll

 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 139632)", isOptimized: true, emissionKind: FullDebug, file: !17, enums: !1, retainedTypes: !1, globals: !12)
 !1 = !{}
 !5 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !0, file: !17, scope: !6, type: !7)
 !6 = !DIFile(filename: "fb.c", directory: "/private/tmp")
 !7 = !DISubroutineType(types: !8)
 !8 = !{!9}
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !12 = !{!14}
-!14 = !DIGlobalVariable(name: "bar", line: 2, isLocal: true, isDefinition: true, scope: !5, file: !6, type: !9)
+!14 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "bar", line: 2, isLocal: true, isDefinition: true, scope: !5, file: !6, type: !9))
 !15 = !DILocation(line: 3, column: 3, scope: !16)
 !16 = distinct !DILexicalBlock(line: 1, column: 11, file: !17, scope: !5)
 !17 = !DIFile(filename: "fb.c", directory: "/private/tmp")
 !18 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/Generic/2009-11-06-NamelessGlobalVariable.ll

 ; RUN: llc %s -o /dev/null
 @0 = internal constant i32 1, !dbg !5
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 139632)", isOptimized: true, emissionKind: FullDebug, file: !8, enums: !2, retainedTypes: !2, globals: !3)
 !2 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "a", line: 2, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 2, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "g.c", directory: "/private/tmp")
 !7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !8 = !DIFile(filename: "g.c", directory: "/private/tmp")
 !9 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/Generic/2010-06-29-InlinedFnLocalVar.ll

 !59 = !DILocalVariable(name: "j", line: 9, arg: 1, scope: !0, file: !1, type: !5)
 !60 = !DILocalVariable(name: "xyz", line: 10, scope: !11, file: !1, type: !12)
 
 !11 = distinct !DILexicalBlock(line: 9, column: 0, file: !1, scope: !0)
 !12 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", line: 10, size: 64, align: 32, file: !27, scope: !0, elements: !13)
 !13 = !{!14, !15}
 !14 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 10, size: 32, align: 32, file: !27, scope: !12, baseType: !5)
 !15 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 10, size: 32, align: 32, offset: 32, file: !27, scope: !12, baseType: !5)
-!16 = !DIGlobalVariable(name: "i", line: 5, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !5)
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", line: 5, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !5))
 !17 = !DILocation(line: 15, scope: !18)
 !18 = distinct !DILexicalBlock(line: 14, column: 0, file: !1, scope: !6)
 !19 = !DILocation(line: 9, scope: !0, inlinedAt: !17)
 !20 = !{}
 !21 = !DILocation(line: 9, scope: !11, inlinedAt: !17)
 !22 = !DILocation(line: 11, scope: !11, inlinedAt: !17)
 !23 = !DILocation(line: 16, scope: !18)
 !24 = !{!9, !10}
 !26 = !{!16}
 !27 = !DIFile(filename: "bar.c", directory: "/tmp/")
 !28 = !{i32 1, !"Debug Info Version", i32 3}
 !29 = !{null}

test/DebugInfo/Generic/accel-table-hash-collisions.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!17, !18, !19}
 !llvm.ident = !{!20}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 231548) (llvm/trunk 231547)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "hash-collisions.c", directory: "/tmp")
 !2 = !{}
 !3 = !{!4, !6, !7, !8, !9, !10, !11, !12, !13, !14, !15, !16}
-!4 = !DIGlobalVariable(name: "ForceTopDown", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ForceTopDown", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true))
 !5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!6 = !DIGlobalVariable(name: "_ZNSt3__116allocator_traitsINS_9allocatorINS_11__tree_nodeINS_12__value_typeIPN4llvm10BasicBlockEPNS4_10RegionNodeEEEPvEEEEE11__constructIS9_JNS_4pairIS6_S8_EEEEEvNS_17integral_constantIbLb1EEERSC_PT_DpOT0_", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true)
-!7 = !DIGlobalVariable(name: "_ZN5clang23DataRecursiveASTVisitorIN12_GLOBAL__N_124UnusedBackingIvarCheckerEE26TraverseCUDAKernelCallExprEPNS_18CUDAKernelCallExprE", scope: !0, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true)
-!8 = !DIGlobalVariable(name: "_ZN4llvm16DenseMapIteratorIPNS_10MDLocationENS_6detail13DenseSetEmptyENS_10MDNodeInfoIS1_EENS3_12DenseSetPairIS2_EELb0EE23AdvancePastEmptyBucketsEv", scope: !0, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true)
-!9 = !DIGlobalVariable(name: "_ZNK4llvm12LivePhysRegs5printERNS_11raw_ostreamE", scope: !0, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true)
-!10 = !DIGlobalVariable(name: "_ZN4llvm15ScalarEvolution14getSignedRangeEPKNS_4SCEVE", scope: !0, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true)
-!11 = !DIGlobalVariable(name: "k1", scope: !0, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true)
-!12 = !DIGlobalVariable(name: "is", scope: !0, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true)
-!13 = !DIGlobalVariable(name: "setStmt", scope: !0, file: !1, line: 9, type: !5, isLocal: false, isDefinition: true)
-!14 = !DIGlobalVariable(name: "_ZN4llvm5TwineC1Ei", scope: !0, file: !1, line: 10, type: !5, isLocal: false, isDefinition: true)
-!15 = !DIGlobalVariable(name: "_ZNK5clang12OverrideAttr5cloneERNS_10ASTContextE", scope: !0, file: !1, line: 11, type: !5, isLocal: false, isDefinition: true)
-!16 = !DIGlobalVariable(name: "_ZN4llvm22MachineModuleInfoMachOD2Ev", scope: !0, file: !1, line: 12, type: !5, isLocal: false, isDefinition: true)
+!6 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_ZNSt3__116allocator_traitsINS_9allocatorINS_11__tree_nodeINS_12__value_typeIPN4llvm10BasicBlockEPNS4_10RegionNodeEEEPvEEEEE11__constructIS9_JNS_4pairIS6_S8_EEEEEvNS_17integral_constantIbLb1EEERSC_PT_DpOT0_", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true))
+!7 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_ZN5clang23DataRecursiveASTVisitorIN12_GLOBAL__N_124UnusedBackingIvarCheckerEE26TraverseCUDAKernelCallExprEPNS_18CUDAKernelCallExprE", scope: !0, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true))
+!8 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_ZN4llvm16DenseMapIteratorIPNS_10MDLocationENS_6detail13DenseSetEmptyENS_10MDNodeInfoIS1_EENS3_12DenseSetPairIS2_EELb0EE23AdvancePastEmptyBucketsEv", scope: !0, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true))
+!9 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_ZNK4llvm12LivePhysRegs5printERNS_11raw_ostreamE", scope: !0, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true))
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_ZN4llvm15ScalarEvolution14getSignedRangeEPKNS_4SCEVE", scope: !0, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true))
+!11 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "k1", scope: !0, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true))
+!12 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "is", scope: !0, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true))
+!13 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "setStmt", scope: !0, file: !1, line: 9, type: !5, isLocal: false, isDefinition: true))
+!14 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_ZN4llvm5TwineC1Ei", scope: !0, file: !1, line: 10, type: !5, isLocal: false, isDefinition: true))
+!15 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_ZNK5clang12OverrideAttr5cloneERNS_10ASTContextE", scope: !0, file: !1, line: 11, type: !5, isLocal: false, isDefinition: true))
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_ZN4llvm22MachineModuleInfoMachOD2Ev", scope: !0, file: !1, line: 12, type: !5, isLocal: false, isDefinition: true))
 !17 = !{i32 2, !"Dwarf Version", i32 2}
 !18 = !{i32 2, !"Debug Info Version", i32 3}
 !19 = !{i32 1, !"PIC Level", i32 2}
 !20 = !{!"clang version 3.7.0 (trunk 231548) (llvm/trunk 231547)"}

test/DebugInfo/Generic/cross-cu-linkonce-distinct.ll

 !1 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "func", linkageName: "_Z4funci", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2)
 !5 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo")
 !6 = !DISubroutineType(types: !7)
 !7 = !{!8, !8}
 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{!10}
-!10 = !DIGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !5, type: !11)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !5, type: !11))
 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !6)
 !12 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !13, enums: !2, retainedTypes: !2, globals: !17, imports: !2)
 !13 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo")
 !15 = distinct !DISubprogram(name: "func", linkageName: "_Z4funci", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !12, scopeLine: 1, file: !13, scope: !16, type: !6, variables: !2)
 !16 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo")
 !17 = !{!18}
-!18 = !DIGlobalVariable(name: "y", line: 4, isLocal: false, isDefinition: true, scope: null, file: !16, type: !11)
+!18 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "y", line: 4, isLocal: false, isDefinition: true, scope: null, file: !16, type: !11))
 !19 = !{i32 2, !"Dwarf Version", i32 4}
 !20 = !{i32 1, !"Debug Info Version", i32 3}
 !21 = !{!"clang version 3.5.0 "}
 !22 = !DILocalVariable(name: "i", line: 1, arg: 1, scope: !4, file: !5, type: !8)
 !23 = !DILocation(line: 1, scope: !4)
 !24 = !DILocation(line: 2, scope: !4)

test/DebugInfo/Generic/cross-cu-linkonce.ll

 !2 = !{}
 !4 = distinct !DISubprogram(name: "func", linkageName: "_Z4funci", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !5, scope: !6, type: !7, variables: !2)
 !5 = !DIFile(filename: "func.h", directory: "/tmp/dbginfo")
 !6 = !DIFile(filename: "func.h", directory: "/tmp/dbginfo")
 !7 = !DISubroutineType(types: !8)
 !8 = !{!9, !9}
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !{!11}
-!11 = !DIGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !6, type: !12)
+!11 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !6, type: !12))
 !12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !7)
 !13 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !14, enums: !2, retainedTypes: !2, globals: !15, imports: !2)
 !14 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo")
 !15 = !{!16}
-!16 = !DIGlobalVariable(name: "y", line: 4, isLocal: false, isDefinition: true, scope: null, file: !6, type: !12)
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "y", line: 4, isLocal: false, isDefinition: true, scope: null, file: !6, type: !12))
 !17 = !{i32 2, !"Dwarf Version", i32 4}
 !18 = !{i32 1, !"Debug Info Version", i32 3}
 !19 = !{!"clang version 3.5.0 "}
 !20 = !DILocalVariable(name: "i", line: 1, arg: 1, scope: !4, file: !6, type: !9)
 !21 = !DILocation(line: 1, scope: !4)
 !22 = !DILocation(line: 2, scope: !4)
 !24 = distinct !DISubprogram(name: "func", linkageName: "_Z4funci", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !13, scopeLine: 1, file: !5, scope: !6, type: !7, variables: !2)

test/DebugInfo/Generic/dbg-at-specficiation.ll

 ; RUN: llc  < %s | FileCheck %s
 ; Radar 10147769
 ; Do not unnecessarily use AT_specification DIE.
 ; CHECK-NOT: AT_specification
 
 @a = common global [10 x i32] zeroinitializer, align 16, !dbg !5
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!12}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 140253)", isOptimized: true, emissionKind: FullDebug, file: !11, enums: !2, retainedTypes: !2, globals: !3)
 !2 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "x.c", directory: "/private/tmp")
 !7 = !DICompositeType(tag: DW_TAG_array_type, size: 320, align: 32, baseType: !8, elements: !9)
 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{!10}
 !10 = !DISubrange(count: 10)
 !11 = !DIFile(filename: "x.c", directory: "/private/tmp")
 !12 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/Generic/debuginfofinder-forward-declaration.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!10, !11}
 !llvm.ident = !{!12}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (http://llvm.org/git/clang.git 247b30a043eb8f39ea3708e7e995089da0a6b00f) (http://llvm.org/git/llvm.git 6ecc7365a89c771fd229bdd9ffcc178684ea1aa5)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "minimal.c", directory: "/tmp")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "y", scope: !0, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "y", scope: !0, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true))
 !5 = !DICompositeType(tag: DW_TAG_structure_type, name: "Y", file: !1, line: 3, size: 64, align: 64, elements: !6)
 !6 = !{!7}
 !7 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !5, file: !1, line: 4, baseType: !8, size: 64, align: 64)
 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
 !9 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", file: !1, line: 1, flags: DIFlagFwdDecl)
 !10 = !{i32 2, !"Dwarf Version", i32 4}
 !11 = !{i32 2, !"Debug Info Version", i32 3}
 !12 = !{!"clang version 3.7.0 (http://llvm.org/git/clang.git 247b30a043eb8f39ea3708e7e995089da0a6b00f) (http://llvm.org/git/llvm.git 6ecc7365a89c771fd229bdd9ffcc178684ea1aa5)"}

test/DebugInfo/Generic/dwarf-public-names.ll

 !17 = !{} ; previously: invalid DW_TAG_base_type
 !18 = distinct !DISubprogram(name: "static_member_function", linkageName: "_ZN1C22static_member_functionEv", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 13, file: !4, scope: null, type: !15, declaration: !14, variables: !1)
 !19 = distinct !DISubprogram(name: "global_function", linkageName: "_Z15global_functionv", line: 19, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 19, file: !4, scope: !4, type: !15, variables: !1)
 !20 = distinct !DISubprogram(name: "global_namespace_function", linkageName: "_ZN2ns25global_namespace_functionEv", line: 24, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 24, file: !4, scope: !21, type: !22, variables: !1)
 !21 = !DINamespace(name: "ns", line: 23, file: !4, scope: null)
 !22 = !DISubroutineType(types: !23)
 !23 = !{null}
 !24 = !{!25, !26, !27}
-!25 = !DIGlobalVariable(name: "static_member_variable", linkageName: "_ZN1C22static_member_variableE", line: 7, isLocal: false, isDefinition: true, scope: !8, file: !4, type: !11, declaration: !10)
-!26 = !DIGlobalVariable(name: "global_variable", line: 17, isLocal: false, isDefinition: true, scope: null, file: !4, type: !8)
-!27 = !DIGlobalVariable(name: "global_namespace_variable", linkageName: "_ZN2ns25global_namespace_variableE", line: 27, isLocal: false, isDefinition: true, scope: !21, file: !4, type: !11)
+!25 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "static_member_variable", linkageName: "_ZN1C22static_member_variableE", line: 7, isLocal: false, isDefinition: true, scope: !8, file: !4, type: !11, declaration: !10))
+!26 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "global_variable", line: 17, isLocal: false, isDefinition: true, scope: null, file: !4, type: !8))
+!27 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "global_namespace_variable", linkageName: "_ZN2ns25global_namespace_variableE", line: 27, isLocal: false, isDefinition: true, scope: !21, file: !4, type: !11))
 !28 = !DILocalVariable(name: "this", line: 9, arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !3, file: !4, type: !29)
 !29 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !8)
 !30 = !DILocation(line: 9, scope: !3)
 !31 = !DILocation(line: 10, scope: !3)
 !32 = !DILocation(line: 11, scope: !3)
 !33 = !DILocation(line: 14, scope: !18)
 !34 = !DILocation(line: 20, scope: !19)
 !35 = !DILocation(line: 25, scope: !20)
 !36 = !DILocation(line: 26, scope: !20)
 !37 = !DIFile(filename: "dwarf-public-names.cpp", directory: "/usr2/kparzysz/s.hex/t")
 !38 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/Generic/enum.ll

 !9 = !{!10}
 !10 = !DIEnumerator(name: "X", value: 0) ; [ DW_TAG_enumerator ] [X :: 0]
 !11 = !{}
 !13 = distinct !DISubprogram(name: "func", linkageName: "_Z4funcv", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !14, type: !15, variables: !11)
 !14 = !DIFile(filename: "enum.cpp", directory: "/tmp")
 !15 = !DISubroutineType(types: !16)
 !16 = !{null}
 !17 = !{!18}
-!18 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !14, type: !3)
+!18 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !14, type: !3))
 !19 = !{i32 2, !"Dwarf Version", i32 3}
 !20 = !DILocalVariable(name: "b", line: 4, scope: !13, file: !14, type: !21)
 !21 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !22 = !DILocation(line: 4, scope: !13)
 !23 = !DILocation(line: 5, scope: !13)
 !24 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/Generic/global.ll

 !1 = !DIFile(filename: "global.cpp", directory: "/tmp")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "main", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, variables: !2)
 !5 = !DIFile(filename: "global.cpp", directory: "/tmp")
 !6 = !DISubroutineType(types: !7)
 !7 = !{!8}
 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{!10}
-!10 = !DIGlobalVariable(name: "i", linkageName: "_ZL1i", line: 1, isLocal: true, isDefinition: true, scope: null, file: !5, type: !8)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", linkageName: "_ZL1i", line: 1, isLocal: true, isDefinition: true, scope: null, file: !5, type: !8))
 !11 = !{i32 2, !"Dwarf Version", i32 3}
 !12 = !DILocation(line: 4, scope: !4)
 !13 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/Generic/gvn.ll

 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
 !9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !{!11}
 !11 = !DILocalVariable(name: "p1", arg: 1, scope: !4, file: !1, line: 2, type: !8)
 !12 = distinct !DISubprogram(name: "f3", scope: !1, file: !1, line: 9, type: !13, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
 !13 = !DISubroutineType(types: !14)
 !14 = !{null}
 !15 = !{!16, !17}
-!16 = !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true)
-!17 = !DIGlobalVariable(name: "b", scope: !0, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true)
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true))
+!17 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", scope: !0, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true))
 !18 = !{i32 2, !"Dwarf Version", i32 2}
 !19 = !{i32 2, !"Debug Info Version", i32 3}
 !20 = !{!"clang version 3.8.0 (trunk 245562) (llvm/trunk 245569)"}
 !21 = !DIExpression()
 !22 = !DILocation(line: 2, scope: !4)
 !23 = !DILocation(line: 3, scope: !24)
 !24 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3)
 !25 = !{!26, !26, i64 0}

test/DebugInfo/Generic/member-pointers.ll

 @y = global { i64, i64 } zeroinitializer, align 8, !dbg !10
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!16}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 ", isOptimized: false, emissionKind: FullDebug, file: !15, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5, !10}
-!5 = !DIGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "simple.cpp", directory: "/home/blaikie/Development/scratch")
 !7 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !8, extraData: !9)
 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !DICompositeType(tag: DW_TAG_structure_type, name: "S", line: 1, size: 8, align: 8, file: !15, elements: !1)
-!10 = !DIGlobalVariable(name: "y", line: 5, isLocal: false, isDefinition: true, scope: null, file: !6, type: !11)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "y", line: 5, isLocal: false, isDefinition: true, scope: null, file: !6, type: !11))
 !11 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !12, extraData: !9)
 !12 = !DISubroutineType(types: !13)
 !13 = !{null, !14, !8}
 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !9)
 !15 = !DIFile(filename: "simple.cpp", directory: "/home/blaikie/Development/scratch")
 !16 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/Generic/namespace.ll

 ; namespace A {
 ; using B::i;
 ; namespace B {
 ; int var_fwd = i;
 ; }
 ; }
 ; void B::func_fwd() {}
 
-@_ZN1A1B1iE = global i32 0, align 4, !dbg !31
-@_ZN1A1B7var_fwdE = global i32 0, align 4, !dbg !32
+@_ZN1A1B1iE = global i32 0, align 4, !dbg !131
+@_ZN1A1B7var_fwdE = global i32 0, align 4, !dbg !132
 @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_debug_info_namespace.cpp, i8* null }]
 
 ; Function Attrs: nounwind ssp uwtable
 define i32 @_ZN1A1B2f1Ev() #0 !dbg !10 {
 entry:
   ret i32 0, !dbg !60
 }
 

 !22 = !DISubroutineType(types: !23)
 !23 = !{!13, !24}
 !24 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean)
 !25 = distinct !DISubprogram(name: "__cxx_global_var_init1", line: 44, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 44, file: !5, scope: !18, type: !19, variables: !2)
 !26 = distinct !DISubprogram(name: "func_fwd", linkageName: "_ZN1A1B8func_fwdEv", line: 47, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 47, file: !5, scope: !6, type: !19, variables: !2)
 !27 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_debug_info_namespace.cpp", isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !0, file: !1, scope: !28, type: !29, variables: !2)
 !28 = !DIFile(filename: "debug-info-namespace.cpp", directory: "/tmp")
 !29 = !DISubroutineType(types: !2)
-!30 = !{!31, !32}
+!30 = !{!131, !132}
 !31 = !DIGlobalVariable(name: "i", linkageName: "_ZN1A1B1iE", line: 20, isLocal: false, isDefinition: true, scope: !6, file: !18, type: !13)
 !32 = !DIGlobalVariable(name: "var_fwd", linkageName: "_ZN1A1B7var_fwdE", line: 44, isLocal: false, isDefinition: true, scope: !6, file: !18, type: !13)
 !33 = !{!34, !35, !36, !37, !40, !41, !42, !43, !44, !45, !47, !48, !49, !51, !54, !55, !56}
 !34 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 15, scope: !7, entity: !6)
 !35 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 18, scope: !0, entity: !7)
 !36 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 19, name: "E", scope: !0, entity: !7)
 !37 = !DIImportedEntity(tag: DW_TAG_imported_module, line: 23, scope: !38, entity: !6)
 !38 = distinct !DILexicalBlock(line: 22, column: 10, file: !5, scope: !39)

 !68 = !DILocation(line: 22, column: 7, scope: !21)
 !69 = !DILocation(line: 24, column: 5, scope: !38)
 !70 = !DILocation(line: 38, column: 3, scope: !21)
 !71 = !DILocation(line: 39, column: 1, scope: !21)
 !72 = !DILocation(line: 44, column: 15, scope: !25)
 !73 = !DILocation(line: 47, column: 21, scope: !26)
 !74 = !DILocation(line: 0, scope: !75)
 !75 = !DILexicalBlockFile(discriminator: 0, file: !5, scope: !27)
+!131 = !DIGlobalVariableExpression(var: !31)
+!132 = !DIGlobalVariableExpression(var: !32)

test/DebugInfo/Generic/recursive_inlining.ll

 !19 = distinct !DISubprogram(name: "fn4", linkageName: "_Z3fn4v", line: 21, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 21, file: !5, scope: !15, type: !16, variables: !2)
 !20 = distinct !DISubprogram(name: "fn5", linkageName: "_Z3fn5v", line: 22, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 22, file: !5, scope: !15, type: !16, variables: !2)
 !21 = distinct !DISubprogram(name: "fn7", linkageName: "_Z3fn7v", line: 14, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 14, file: !5, scope: !15, type: !16, variables: !2)
 !22 = distinct !DISubprogram(name: "m_fn2", linkageName: "_ZN1C5m_fn2Ev", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 7, file: !5, scope: !4, type: !10, declaration: !9, variables: !23)
 !23 = !{!24}
 !24 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !22, type: !25)
 !25 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
 !26 = !{!27}
-!27 = !DIGlobalVariable(name: "x", line: 13, isLocal: false, isDefinition: true, scope: null, file: !15, type: !25)
+!27 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", line: 13, isLocal: false, isDefinition: true, scope: null, file: !15, type: !25))
 !28 = !{i32 2, !"Dwarf Version", i32 4}
 !29 = !{i32 2, !"Debug Info Version", i32 3}
 !30 = !{!"clang version 3.6.0 "}
 !31 = !DILocation(line: 16, scope: !14)
 !32 = !DILocation(line: 17, scope: !14)
 !33 = !{!34, !34, i64 0}
 !34 = !{!"any pointer", !35, i64 0}
 !35 = !{!"omnipotent char", !36, i64 0}

test/DebugInfo/Generic/template-recursive-void.ll

 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!36, !37}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (trunk 187958) (llvm/trunk 187964)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "debug-info-template-recursive.cpp", directory: "/usr/local/google/home/echristo/tmp")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "filters", line: 10, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "filters", line: 10, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6))
 !5 = !DIFile(filename: "debug-info-template-recursive.cpp", directory: "/usr/local/google/home/echristo/tmp")
 !6 = !DICompositeType(tag: DW_TAG_class_type, name: "bar", line: 9, size: 8, align: 8, file: !1, elements: !7)
 !7 = !{!8, !31}
 !8 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !9)
 !9 = !DICompositeType(tag: DW_TAG_class_type, name: "foo<void>", line: 5, size: 8, align: 8, file: !1, elements: !10, templateParams: !29)
 !10 = !{!11, !19, !25}
 !11 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !9, baseType: !12)
 !12 = !DICompositeType(tag: DW_TAG_class_type, name: "base", line: 3, size: 8, align: 8, file: !1, elements: !13)

test/DebugInfo/Generic/tu-member-pointer.ll

 !llvm.module.flags = !{!10, !11}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !5, imports: !2)
 !1 = !DIFile(filename: "foo.cpp", directory: ".")
 !2 = !{}
 !3 = !{!4}
 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "Foo", line: 1, flags: DIFlagFwdDecl, file: !1, identifier: "_ZTS3Foo")
 !5 = !{!6}
-!6 = !DIGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !7, type: !8)
+!6 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !7, type: !8))
 !7 = !DIFile(filename: "foo.cpp", directory: ".")
 !8 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !9, extraData: !4)
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !{i32 2, !"Dwarf Version", i32 2}
 !11 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/Generic/typedef.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!8, !9}
 !llvm.ident = !{!10}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "typedef.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "y", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "y", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6))
 !5 = !DIFile(filename: "typedef.cpp", directory: "/tmp/dbginfo")
 !6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !7)
 !7 = !DIDerivedType(tag: DW_TAG_typedef, name: "x", line: 1, file: !1, baseType: null)
 !8 = !{i32 2, !"Dwarf Version", i32 4}
 !9 = !{i32 1, !"Debug Info Version", i32 3}
 !10 = !{!"clang version 3.5.0 "}
 

test/DebugInfo/MIR/X86/live-debug-values.mir

 # This case will also produce multiple locations but only the debug range
 # extension is tested here. This test case is tested with DWARF information under
 # llvm/test/DebugInfo/live-debug-values.ll and present here for testing under
 # MIR->MIR serialization.
 
 # DBG_VALUE for variable "n" is extended into BB#5 from its predecessors BB#3
 # and BB#4.
 # CHECK:      bb.5.if.end.7:
-# CHECK:        DBG_VALUE debug-use %ebx, debug-use _, !18, !19, debug-location !32
+# CHECK:        DBG_VALUE debug-use %ebx, debug-use _, !19, !20, debug-location !33
 
 
 --- |
   ; ModuleID = 'live-debug-values.ll'
   target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
   target triple = "x86_64-unknown-linux-gnu"
   
   @m = common global i32 0, align 4, !dbg !16
--- |
   !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
   !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
   !10 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
   !11 = !{!12, !13, !14}
   !12 = !DILocalVariable(name: "argc", arg: 1, scope: !4, file: !1, line: 6, type: !7)
   !13 = !DILocalVariable(name: "argv", arg: 2, scope: !4, file: !1, line: 6, type: !8)
   !14 = !DILocalVariable(name: "n", scope: !4, file: !1, line: 7, type: !7)
   !15 = !{!16}
-  !16 = !DIGlobalVariable(name: "m", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true)
+  !16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "m", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true))
   !17 = !{i32 2, !"Dwarf Version", i32 4}
   !18 = !{i32 2, !"Debug Info Version", i32 3}
   !19 = !{!"clang version 3.8.0 (trunk 253049)"}
   !20 = !DIExpression()
   !21 = !DILocation(line: 6, column: 14, scope: !4)
   !22 = !DILocation(line: 6, column: 27, scope: !23)
   !23 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
   !24 = !DILocation(line: 8, column: 12, scope: !25)

test/DebugInfo/MIR/X86/mlicm-hoist.mir

--- |
   attributes #0 = { noreturn nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
   attributes #1 = { nounwind readnone }
   attributes #2 = { nounwind }
 
   !llvm.dbg.cu = !{!1}
   !llvm.module.flags = !{!6, !7}
   !llvm.ident = !{!8}
 
-  !0 = distinct !DIGlobalVariable(name: "x", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true)
+  !0 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true))
   !1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 4.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
   !2 = !DIFile(filename: "t.c", directory: "/home/test")
   !3 = !{}
   !4 = !{!0}
   !5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
   !6 = !{i32 2, !"Dwarf Version", i32 4}
   !7 = !{i32 2, !"Debug Info Version", i32 3}
   !8 = !{!"clang version 4.0.0 "}

test/DebugInfo/Mips/InlinedFnLocalVar.ll

 !59 = !DILocalVariable(name: "j", line: 9, arg: 1, scope: !0, file: !1, type: !5)
 !60 = !DILocalVariable(name: "xyz", line: 10, scope: !11, file: !1, type: !12)
 
 !11 = distinct !DILexicalBlock(line: 9, column: 0, file: !1, scope: !0)
 !12 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", line: 10, size: 64, align: 32, file: !27, scope: !0, elements: !13)
 !13 = !{!14, !15}
 !14 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 10, size: 32, align: 32, file: !27, scope: !12, baseType: !5)
 !15 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 10, size: 32, align: 32, offset: 32, file: !27, scope: !12, baseType: !5)
-!16 = !DIGlobalVariable(name: "i", line: 5, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !5)
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", line: 5, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !5))
 !17 = !DILocation(line: 15, scope: !18)
 !18 = distinct !DILexicalBlock(line: 14, column: 0, file: !1, scope: !6)
 !19 = !DILocation(line: 9, scope: !0, inlinedAt: !17)
 !20 = !{}
 !21 = !DILocation(line: 9, scope: !11, inlinedAt: !17)
 !22 = !DILocation(line: 11, scope: !11, inlinedAt: !17)
 !23 = !DILocation(line: 16, scope: !18)
 !24 = !{!9, !10}
 !26 = !{!16}
 !27 = !DIFile(filename: "bar.c", directory: "/tmp/")
 !28 = !{i32 1, !"Debug Info Version", i32 3}
 !29 = !{null}

test/DebugInfo/PowerPC/tls-fission.ll

 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!7, !8}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, splitDebugFilename: "tls.dwo", emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "tls.cpp", directory: "/tmp")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "tls", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tls", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6))
 !5 = !DIFile(filename: "tls.cpp", directory: "/tmp")
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = !{i32 2, !"Dwarf Version", i32 3}
 !8 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/PowerPC/tls.ll

 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!7, !8}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "tls.cpp", directory: "/tmp")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "tls", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tls", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6))
 !5 = !DIFile(filename: "tls.cpp", directory: "/tmp")
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = !{i32 2, !"Dwarf Version", i32 3}
 
 !8 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/WebAssembly/dbg-declare.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!11, !12}
 !llvm.ident = !{!13}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 273884) (llvm/trunk 273897)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "crash.c", directory: "wasm/tests")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "key", scope: !0, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "key", scope: !0, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true))
 !5 = !DICompositeType(tag: DW_TAG_array_type, baseType: !6, size: 120, align: 8, elements: !9)
 !6 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !7, line: 185, baseType: !8)
 !7 = !DIFile(filename: "wasm/emscripten/system/include/libc/bits/alltypes.h", directory: "wasm/tests")
 !8 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
 !9 = !{!10}
 !10 = !DISubrange(count: 15)
 !11 = !{i32 2, !"Dwarf Version", i32 4}
 !12 = !{i32 2, !"Debug Info Version", i32 3}

test/DebugInfo/X86/2011-09-26-GlobalVarContext.ll

 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk)", isOptimized: false, emissionKind: FullDebug, file: !20, enums: !1, retainedTypes: !1, globals: !12, imports:  !1)
 !1 = !{}
 !5 = distinct !DISubprogram(name: "f", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !0, file: !6, scope: !6, type: !7)
 !6 = !DIFile(filename: "test.c", directory: "/work/llvm/vanilla/test/DebugInfo")
 !7 = !DISubroutineType(types: !8)
 !8 = !{!9}
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !12 = !{!14}
-!14 = !DIGlobalVariable(name: "GLB", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !9)
+!14 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "GLB", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !9))
 !15 = !DILocalVariable(name: "LOC", line: 4, scope: !16, file: !6, type: !9)
 !16 = distinct !DILexicalBlock(line: 3, column: 9, file: !20, scope: !5)
 !17 = !DILocation(line: 4, column: 9, scope: !16)
 !18 = !DILocation(line: 4, column: 23, scope: !16)
 !19 = !DILocation(line: 5, column: 5, scope: !16)
 !20 = !DIFile(filename: "test.c", directory: "/work/llvm/vanilla/test/DebugInfo")
 
 ; CHECK: DW_TAG_variable

test/DebugInfo/X86/DIModuleContext.ll

 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!7, !8}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3, imports: !11)
 !1 = !DIFile(filename: "test.c", directory: "/")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "s", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true))
 !5 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64, align: 64)
 !6 = !DICompositeType(tag: DW_TAG_structure_type, name: "s", scope: !9, file: !1, line: 1, flags: DIFlagFwdDecl)
 !7 = !{i32 2, !"Dwarf Version", i32 2}
 !8 = !{i32 2, !"Debug Info Version", i32 3}
 !9 = !DIModule(scope: null, name: "Module", configMacros: "", includePath: ".", isysroot: "/")
 !10 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !0, entity: !9, line: 11)
 !11 = !{!10}

test/DebugInfo/X86/DW_AT_calling-convention.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9, !10}
 !llvm.ident = !{!11}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 272067)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "fptr", linkageName: "\01?fptr@@3P6IHHH@ZA", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "fptr", linkageName: "\01?fptr@@3P6IHHH@ZA", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true))
 !5 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 32, align: 32)
 !6 = !DISubroutineType(cc: DW_CC_BORLAND_msfastcall, types: !7)
 !7 = !{!8, !8, !8}
 !8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{i32 2, !"Dwarf Version", i32 4}
 !10 = !{i32 2, !"Debug Info Version", i32 3}
 !11 = !{!"clang version 3.9.0 (trunk 272067)"}
 !12 = distinct !DISubprogram(name: "f", linkageName: "\01?f@@YIHHH@Z", scope: !1, file: !1, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !13)
 !13 = !{!14, !15}
 !14 = !DILocalVariable(name: "b", arg: 2, scope: !12, file: !1, line: 1, type: !8)
 !15 = !DILocalVariable(name: "a", arg: 1, scope: !12, file: !1, line: 1, type: !8)
 !16 = !DIExpression()
 !17 = !DILocation(line: 1, column: 29, scope: !12)
 !18 = !DILocation(line: 1, column: 22, scope: !12)
 !19 = !DILocation(line: 1, column: 43, scope: !12)
 !20 = !DILocation(line: 1, column: 34, scope: !12)

test/DebugInfo/X86/DW_AT_specification.ll

 !7 = !DISubroutineType(types: !8)
 !8 = !{null, !9}
 !9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !10)
 !10 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, flags: DIFlagFwdDecl, file: !27)
 !11 = !DISubprogram(name: "bar", linkageName: "_ZN3foo3barEv", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !6, scope: !12, type: !7)
 !12 = !DICompositeType(tag: DW_TAG_class_type, name: "foo", line: 1, size: 8, align: 8, file: !27, elements: !13)
 !13 = !{!11}
 !18 = !{!20}
-!20 = !DIGlobalVariable(name: "x", line: 5, isLocal: true, isDefinition: true, scope: !5, file: !6, type: !21)
+!20 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", line: 5, isLocal: true, isDefinition: true, scope: !5, file: !6, type: !21))
 !21 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !22)
 !22 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !25 = !DILocation(line: 6, column: 1, scope: !26)
 !26 = distinct !DILexicalBlock(line: 4, column: 17, file: !6, scope: !5)
 !27 = !DIFile(filename: "nsNativeAppSupportBase.ii", directory: "/Users/espindola/mozilla-central/obj-x86_64-apple-darwin11.2.0/toolkit/library")
 !28 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/DW_TAG_friend.ll

 @b = global %class.B zeroinitializer, align 4, !dbg !17
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!29}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 153413) (llvm/trunk 153428)", isOptimized: false, emissionKind: FullDebug, file: !28, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5, !17}
-!5 = !DIGlobalVariable(name: "a", line: 10, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 10, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "foo.cpp", directory: "/Users/echristo/tmp")
 !7 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 1, size: 32, align: 32, file: !28, elements: !8)
 !8 = !{!9, !11}
 !9 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, flags: DIFlagPrivate, file: !28, scope: !7, baseType: !10)
 !10 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !11 = !DISubprogram(name: "A", line: 1, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !6, scope: !7, type: !12)
 !12 = !DISubroutineType(types: !13)
 !13 = !{null, !14}
 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !7)
-!17 = !DIGlobalVariable(name: "b", line: 11, isLocal: false, isDefinition: true, scope: null, file: !6, type: !18)
+!17 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", line: 11, isLocal: false, isDefinition: true, scope: null, file: !6, type: !18))
 !18 = !DICompositeType(tag: DW_TAG_class_type, name: "B", line: 5, size: 32, align: 32, file: !28, elements: !19)
 !19 = !{!20, !21, !27}
 !20 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 7, size: 32, align: 32, flags: DIFlagPrivate, file: !28, scope: !18, baseType: !10)
 !21 = !DISubprogram(name: "B", line: 5, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !6, scope: !18, type: !22)
 !22 = !DISubroutineType(types: !23)
 !23 = !{null, !24}
 !24 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !18)
 !27 = !DIDerivedType(tag: DW_TAG_friend, file: !28, baseType: !7)
 !28 = !DIFile(filename: "foo.cpp", directory: "/Users/echristo/tmp")
 !29 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/InlinedFnLocalVar.ll

 !109 = !DILocalVariable(name: "j", line: 9, arg: 1, scope: !0, file: !1, type: !5)
 !110 = !DILocalVariable(name: "xyz", line: 10, scope: !11, file: !1, type: !12)
 
 !11 = distinct !DILexicalBlock(line: 9, column: 0, file: !1, scope: !0)
 !12 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", line: 10, size: 64, align: 32, file: !27, scope: !0, elements: !13)
 !13 = !{!14, !15}
 !14 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 10, size: 32, align: 32, file: !27, scope: !12, baseType: !5)
 !15 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 10, size: 32, align: 32, offset: 32, file: !27, scope: !12, baseType: !5)
-!16 = !DIGlobalVariable(name: "i", line: 5, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !5)
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", line: 5, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !5))
 !17 = !DILocation(line: 15, scope: !18)
 !18 = distinct !DILexicalBlock(line: 14, column: 0, file: !1, scope: !6)
 !19 = !DILocation(line: 9, scope: !0, inlinedAt: !17)
 !20 = !{}
 !21 = !DILocation(line: 9, scope: !11, inlinedAt: !17)
 !22 = !DILocation(line: 11, scope: !11, inlinedAt: !17)
 !23 = !DILocation(line: 16, scope: !18)
 !24 = !{!9, !10}
 !26 = !{!16}
 !27 = !DIFile(filename: "bar.c", directory: "/tmp/")
 !28 = !{i32 1, !"Debug Info Version", i32 3}
 !29 = !{null}

test/DebugInfo/X86/PR26148.ll

 !13 = !DIDerivedType(tag: DW_TAG_member, name: "f0", scope: !11, file: !1, line: 2, baseType: !7, size: 16, align: 16)
 !14 = !DIDerivedType(tag: DW_TAG_member, name: "f3", scope: !11, file: !1, line: 3, baseType: !15, size: 32, align: 32, offset: 32)
 !15 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !16 = !DILocalVariable(name: "c", scope: !4, file: !1, line: 6, type: !11)
 !17 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 11, type: !18, isLocal: false, isDefinition: true, scopeLine: 11, isOptimized: true, unit: !0, variables: !2)
 !18 = !DISubroutineType(types: !19)
 !19 = !{!15}
 !20 = !{!21}
-!21 = !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 4, type: !11, isLocal: false, isDefinition: true)
+!21 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 4, type: !11, isLocal: false, isDefinition: true))
 !22 = !{i32 2, !"Dwarf Version", i32 2}
 !23 = !{i32 2, !"Debug Info Version", i32 3}
 !24 = !{i32 1, !"PIC Level", i32 2}
 !25 = !{!"clang version 3.9.0 (https://github.com/llvm-mirror/clang 8f258397c5afd7a708bd95770c718e81d08fb11a) (https://github.com/llvm-mirror/llvm 18481855bdfa1b4a424f81be8525db002671348d)"}
 !26 = !DIExpression()
 !27 = !DILocation(line: 5, column: 16, scope: !4)
 !28 = !DILocation(line: 6, column: 13, scope: !4)
 !29 = !DILocation(line: 6, column: 16, scope: !4)
 !30 = !DIExpression(DW_OP_LLVM_fragment, 0, 32)
 !31 = !DIExpression(DW_OP_LLVM_fragment, 32, 32)
 !32 = !DIExpression(DW_OP_LLVM_fragment, 32, 16)
 !33 = !DILocation(line: 8, column: 9, scope: !4)
 !34 = !DILocation(line: 9, column: 1, scope: !4)
 !35 = !DILocation(line: 11, column: 14, scope: !17)

test/DebugInfo/X86/align_c11.ll

 
 attributes #0 = { nounwind uwtable }
 attributes #1 = { nounwind readnone }
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!14, !15}
 !llvm.ident = !{!16}
 
-!0 = distinct !DIGlobalVariable(name: "d", scope: !1, file: !5, line: 7, type: !6, isLocal: false, isDefinition: true, align: 16384)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "d", scope: !1, file: !5, line: 7, type: !6, isLocal: false, isDefinition: true, align: 16384))
 !1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 4.0.0 (http://llvm.org/git/clang.git 9ce5220b821054019059c2ac4a9b132c7723832d) (http://llvm.org/git/llvm.git 9a6298be89ce0359b151c0a37af2776a12c69e85)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "test.c", directory: "/tmp")
 !3 = !{}
 !4 = !{!0}
 !5 = !DIFile(filename: "test.c", directory: "/tmp")
 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "data", file: !5, line: 2, size: 2048, elements: !7)
 !7 = !{!8, !10}
 !8 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !6, file: !5, line: 3, baseType: !9, size: 8)

test/DebugInfo/X86/align_cpp11.ll

 
 attributes #0 = { nounwind uwtable }
 attributes #1 = { nounwind readnone }
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!19, !20}
 !llvm.ident = !{!21}
 
-!0 = distinct !DIGlobalVariable(name: "c0", scope: !1, file: !5, line: 19, type: !17, isLocal: false, isDefinition: true)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c0", scope: !1, file: !5, line: 19, type: !17, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 4.0.0 (http://llvm.org/git/clang.git 9ce5220b821054019059c2ac4a9b132c7723832d) (http://llvm.org/git/llvm.git 9a6298be89ce0359b151c0a37af2776a12c69e85)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !10)
 !2 = !DIFile(filename: "test.cpp", directory: "/tmp")
 !3 = !{!4}
 !4 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "E", file: !5, line: 13, size: 32, align: 128, elements: !6, identifier: "_ZTS1E")
 !5 = !DIFile(filename: "./test.cpp", directory: "/tmp")
 !6 = !{!7, !8, !9}
 !7 = !DIEnumerator(name: "A", value: 0)
 !8 = !DIEnumerator(name: "B", value: 1)
 !9 = !DIEnumerator(name: "C", value: 2)
 !10 = !{!0, !11}
-!11 = distinct !DIGlobalVariable(name: "s", scope: !1, file: !5, line: 21, type: !12, isLocal: false, isDefinition: true, align: 16384)
+!11 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s", scope: !1, file: !5, line: 21, type: !12, isLocal: false, isDefinition: true, align: 16384))
 !12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !5, line: 1, size: 2048, elements: !13, identifier: "_ZTS1S")
 !13 = !{!14, !16}
 !14 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !12, file: !5, line: 2, baseType: !15, size: 8)
 !15 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
 !16 = !DIDerivedType(tag: DW_TAG_member, name: "xx", scope: !12, file: !5, line: 3, baseType: !15, size: 8, align: 1024, offset: 1024)
 !17 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "C0", file: !5, line: 6, size: 512, align: 512, elements: !18, identifier: "_ZTS2C0")
 !18 = !{}
 !19 = !{i32 2, !"Dwarf Version", i32 4}

test/DebugInfo/X86/align_objc.ll

 
 attributes #0 = { nounwind uwtable }
 attributes #1 = { nounwind readnone }
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!11, !12}
 !llvm.ident = !{!13}
 
-!0 = distinct !DIGlobalVariable(name: "s0", scope: !1, file: !5, line: 10, type: !6, isLocal: false, isDefinition: true)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s0", scope: !1, file: !5, line: 10, type: !6, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_ObjC, file: !2, producer: "clang version 4.0.0 (http://llvm.org/git/clang.git 9ce5220b821054019059c2ac4a9b132c7723832d) (http://llvm.org/git/llvm.git 9a6298be89ce0359b151c0a37af2776a12c69e85)", isOptimized: false, runtimeVersion: 1, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "test.m", directory: "/tmp")
 !3 = !{}
 !4 = !{!0}
 !5 = !DIFile(filename: "test.m", directory: "/tmp")
 !6 = !DIDerivedType(tag: DW_TAG_typedef, name: "S0", file: !5, line: 3, baseType: !7)
 !7 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !5, line: 1, size: 1024, align: 1024, elements: !8)
 !8 = !{!9}

test/DebugInfo/X86/arange-and-stub.ll

 !2 = !{}
 !4 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: !5, file: !5, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
 !5 = !DIFile(filename: "/Users/espindola/llvm/test.cpp", directory: "/Users/espindola/llvm/build")
 !6 = !DISubroutineType(types: !7)
 !7 = !{null, !8}
 !8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = distinct !DISubprogram(name: "bar_d", linkageName: "bar", scope: !5, file: !5, line: 3, type: !6, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
 !10 = !{!11}
-!11 = !DIGlobalVariable(name: "zed", scope: !0, file: !5, line: 6, type: !12, isLocal: false, isDefinition: true)
+!11 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "zed", scope: !0, file: !5, line: 6, type: !12, isLocal: false, isDefinition: true))
 !12 = !DICompositeType(tag: DW_TAG_array_type, baseType: !13, size: 64, align: 64, elements: !15)
 !13 = !DIDerivedType(tag: DW_TAG_typedef, name: "vifunc", file: !5, line: 5, baseType: !14)
 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64, align: 64)
 !15 = !{!16}
 !16 = !DISubrange(count: 1)
 !17 = !{i32 2, !"Dwarf Version", i32 4}
 !18 = !{i32 2, !"Debug Info Version", i32 3}
 !19 = !DILocation(line: 0, scope: !9)

test/DebugInfo/X86/arange.ll

 !2 = !{}
 !3 = !{!4}
 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo<&i>", line: 3, size: 8, align: 8, file: !1, elements: !2, templateParams: !5, identifier: "_ZTS3fooIXadL_Z1iEEE")
 !5 = !{!6}
 !6 = !DITemplateValueParameter(tag: DW_TAG_template_value_parameter, name: "x", type: !7, value: i32* @i)
 !7 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !8)
 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{!10}
-!10 = !DIGlobalVariable(name: "f", line: 6, isLocal: false, isDefinition: true, scope: null, file: !11, type: !4)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "f", line: 6, isLocal: false, isDefinition: true, scope: null, file: !11, type: !4))
 !11 = !DIFile(filename: "simple.cpp", directory: "/tmp/dbginfo")
 !12 = !{i32 2, !"Dwarf Version", i32 4}
 !13 = !{i32 1, !"Debug Info Version", i32 3}
 !14 = !{!"clang version 3.5 "}

test/DebugInfo/X86/atomic-c11-dwarf-4.ll

 target triple = "x86_64-unknown-linux-gnu"
 
 @i = common global i32 0, align 4, !dbg !0
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!9, !10}
 !llvm.ident = !{!11}
 
-!0 = distinct !DIGlobalVariable(name: "i", scope: !1, file: !5, line: 1, type: !6, isLocal: false, isDefinition: true)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", scope: !1, file: !5, line: 1, type: !6, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 4.0.0 (http://llvm.org/git/clang.git cd238117e3a8a57271a82d0bb03d6df6ad8f073e) (http://llvm.org/git/llvm.git 9fd063832c1541aad3907cd60ac344d36997905f)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "atomic.c", directory: "/tmp")
 !3 = !{}
 !4 = !{!0}
 !5 = !DIFile(filename: "atomic.c", directory: "/tmp")
 !6 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !7)
 !7 = !DIDerivedType(tag: DW_TAG_atomic_type, baseType: !8)
 !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 !9 = !{i32 2, !"Dwarf Version", i32 4}
 !10 = !{i32 2, !"Debug Info Version", i32 3}
 !11 = !{!"clang version 4.0.0 (http://llvm.org/git/clang.git cd238117e3a8a57271a82d0bb03d6df6ad8f073e) (http://llvm.org/git/llvm.git 9fd063832c1541aad3907cd60ac344d36997905f)"}

test/DebugInfo/X86/atomic-c11-dwarf-5.ll

 target triple = "x86_64-unknown-linux-gnu"
 
 @i = common global i32 0, align 4, !dbg !0
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!9, !10}
 !llvm.ident = !{!11}
 
-!0 = distinct !DIGlobalVariable(name: "i", scope: !1, file: !5, line: 1, type: !6, isLocal: false, isDefinition: true)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", scope: !1, file: !5, line: 1, type: !6, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 4.0.0 (http://llvm.org/git/clang.git cd238117e3a8a57271a82d0bb03d6df6ad8f073e) (http://llvm.org/git/llvm.git 9fd063832c1541aad3907cd60ac344d36997905f)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "atomic.c", directory: "/tmp")
 !3 = !{}
 !4 = !{!0}
 !5 = !DIFile(filename: "atomic.c", directory: "/tmp")
 !6 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !7)
 !7 = !DIDerivedType(tag: DW_TAG_atomic_type, baseType: !8)
 !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 !9 = !{i32 2, !"Dwarf Version", i32 5}
 !10 = !{i32 2, !"Debug Info Version", i32 3}
 !11 = !{!"clang version 4.0.0 (http://llvm.org/git/clang.git cd238117e3a8a57271a82d0bb03d6df6ad8f073e) (http://llvm.org/git/llvm.git 9fd063832c1541aad3907cd60ac344d36997905f)"}

test/DebugInfo/X86/bitfields-dwarf4.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!14, !15, !16}
 !llvm.ident = !{!17}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 267633)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "bitfield.c", directory: "/Volumes/Data/llvm")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "s", scope: !0, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s", scope: !0, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true))
 !5 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "PackedBits", file: !1, line: 3, size: 40, elements: !6)
 !6 = !{!7, !9, !13}
 
 ; CHECK: DW_TAG_member
 ; CHECK-NEXT: DW_AT_name{{.*}}"a"
 ; CHECK-NOT:  DW_TAG
 ; CHECK-NOT:  DW_AT_bit_offset
 ; CHECK-NOT:  DW_AT_data_bit_offset

test/DebugInfo/X86/bitfields.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!13, !14, !15}
 !llvm.ident = !{!16}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "bitfields.c", directory: "/")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "b", scope: !0, file: !5, line: 8, type: !6, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", scope: !0, file: !5, line: 8, type: !6, isLocal: false, isDefinition: true))
 !5 = !DIFile(filename: "bitfields.c", directory: "/")
 !6 = !DICompositeType(tag: DW_TAG_structure_type, name: "bitfield", file: !5, line: 1, size: 96, elements: !7)
 !7 = !{!8, !10, !11, !12}
 !8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !5, line: 2, baseType: !9, size: 2)
 !9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 !10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !5, line: 3, baseType: !9, size: 32, offset: 32)
 !11 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !6, file: !5, line: 4, baseType: !9, size: 1, offset: 64)
 !12 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !6, file: !5, line: 5, baseType: !9, size: 28, offset: 65)
 !13 = !{i32 2, !"Dwarf Version", i32 2}
 !14 = !{i32 2, !"Debug Info Version", i32 3}
 !15 = !{i32 1, !"PIC Level", i32 2}
 !16 = !{!"clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)"}

test/DebugInfo/X86/c-type-units.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!7, !8}
 !llvm.ident = !{!9}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "simple.c", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "f", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "f", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6))
 !5 = !DIFile(filename: "simple.c", directory: "/tmp/dbginfo")
 !6 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, align: 8, file: !1, elements: !2)
 !7 = !{i32 2, !"Dwarf Version", i32 4}
 !8 = !{i32 1, !"Debug Info Version", i32 3}
 !9 = !{!"clang version 3.5 "}

test/DebugInfo/X86/concrete_out_of_line.ll

 !39 = !DIDerivedType(tag: DW_TAG_member, name: "mValue", line: 7, size: 32, align: 32, file: !59, scope: !37, baseType: !9)
 !40 = !DISubprogram(name: "nsAutoRefCnt", line: 3, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 3, file: !6, scope: !37, type: !41, variables: !18)
 !41 = !DISubroutineType(types: !42)
 !42 = !{null, !34}
 !43 = !{!45, !46}
 !45 = !DILocalVariable(name: "this", line: 4, arg: 1, flags: DIFlagArtificial, scope: !31, file: !6, type: !34)
 !46 = !DILocalVariable(name: "aValue", line: 4, arg: 2, scope: !31, file: !6, type: !9)
 !47 = !{!49}
-!49 = !DIGlobalVariable(name: "mRefCnt", line: 9, isLocal: false, isDefinition: true, scope: null, file: !6, type: !37)
+!49 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "mRefCnt", line: 9, isLocal: false, isDefinition: true, scope: null, file: !6, type: !37))
 !50 = !DILocation(line: 5, column: 5, scope: !51, inlinedAt: !52)
 !51 = distinct !DILexicalBlock(line: 4, column: 29, file: !6, scope: !31)
 !52 = !DILocation(line: 15, scope: !53)
 !53 = distinct !DILexicalBlock(line: 14, column: 34, file: !6, scope: !5)
 !54 = !DILocation(line: 19, column: 3, scope: !55, inlinedAt: !56)
 !55 = distinct !DILexicalBlock(line: 18, column: 41, file: !6, scope: !27)
 !56 = !DILocation(line: 18, column: 41, scope: !23, inlinedAt: !52)
 !57 = !DILocation(line: 19, column: 3, scope: !55, inlinedAt: !58)
 !58 = !DILocation(line: 18, column: 41, scope: !23)
 !59 = !DIFile(filename: "nsAutoRefCnt.ii", directory: "/Users/espindola/mozilla-central/obj-x86_64-apple-darwin11.2.0/netwerk/base/src")
 !60 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/cu-ranges-odr.ll

 !14 = distinct !DISubprogram(name: "__cxx_global_var_init", line: 8, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 8, file: !1, scope: !15, type: !16, variables: !2)
 !15 = !DIFile(filename: "baz.cpp", directory: "/usr/local/google/home/echristo/tmp")
 !16 = !DISubroutineType(types: !17)
 !17 = !{null}
 !18 = distinct !DISubprogram(name: "A", linkageName: "_ZN1AC2Ei", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !4, type: !9, declaration: !8, variables: !2)
 !19 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__I_a", line: 3, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagArtificial, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !15, type: !20, variables: !2)
 !20 = !DISubroutineType(types: !2)
 !21 = !{!22}
-!22 = !DIGlobalVariable(name: "a", line: 8, isLocal: false, isDefinition: true, scope: null, file: !15, type: !4)
+!22 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 8, isLocal: false, isDefinition: true, scope: null, file: !15, type: !4))
 !23 = !{i32 2, !"Dwarf Version", i32 4}
 !24 = !{i32 1, !"Debug Info Version", i32 3}
 !25 = !{!"clang version 3.5 (trunk 199923) (llvm/trunk 199940)"}
 !26 = !DILocation(line: 8, scope: !14)
 !27 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !18, type: !28)
 !28 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
 !29 = !DILocation(line: 0, scope: !18)
 !30 = !DILocalVariable(name: "i", line: 3, arg: 2, scope: !18, file: !15, type: !7)
 !31 = !DILocation(line: 3, scope: !18)
 !32 = !DILocation(line: 3, scope: !19)

test/DebugInfo/X86/data_member_location.ll

 !3 = !{!4}
 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, size: 64, align: 32, file: !1, elements: !5, identifier: "_ZTS3foo")
 !5 = !{!6, !8}
 !6 = !DIDerivedType(tag: DW_TAG_member, name: "c", line: 2, size: 8, align: 8, file: !1, scope: !4, baseType: !7)
 !7 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !8 = !DIDerivedType(tag: DW_TAG_member, name: "i", line: 3, size: 32, align: 32, offset: 32, file: !1, scope: !4, baseType: !9)
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !{!11}
-!11 = !DIGlobalVariable(name: "f", line: 6, isLocal: false, isDefinition: true, scope: null, file: !12, type: !4)
+!11 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "f", line: 6, isLocal: false, isDefinition: true, scope: null, file: !12, type: !4))
 !12 = !DIFile(filename: "data_member_location.cpp", directory: "/tmp/dbginfo")
 !13 = !{i32 2, !"Dwarf Version", i32 4}
 !14 = !{!"clang version 3.4 "}
 
 !15 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/dbg-subrange.ll

 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 144833)", isOptimized: false, emissionKind: FullDebug, file: !21, enums: !1, retainedTypes: !1, globals: !11, imports:  !1)
 !1 = !{}
 !5 = distinct !DISubprogram(name: "bar", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, file: !21, scope: !6, type: !7)
 !6 = !DIFile(filename: "small.c", directory: "/private/tmp")
 !7 = !DISubroutineType(types: !8)
 !8 = !{null}
 !11 = !{!13}
-!13 = !DIGlobalVariable(name: "s", line: 2, isLocal: false, isDefinition: true, scope: null, file: !6, type: !14)
+!13 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s", line: 2, isLocal: false, isDefinition: true, scope: null, file: !6, type: !14))
 !14 = !DICompositeType(tag: DW_TAG_array_type, size: 34359738368, align: 8, baseType: !15, elements: !16)
 !15 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !16 = !{!17}
 !17 = !DISubrange(count: 4294967296)
 !18 = !DILocation(line: 5, column: 3, scope: !19)
 !19 = distinct !DILexicalBlock(line: 4, column: 1, file: !21, scope: !5)
 !20 = !DILocation(line: 6, column: 1, scope: !19)
 !21 = !DIFile(filename: "small.c", directory: "/private/tmp")
 !22 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/dbg-value-inlined-parameter.ll

 !11 = !DIDerivedType(tag: DW_TAG_typedef, name: "S1", line: 4, file: !42, scope: !2, baseType: !12)
 !12 = !DICompositeType(tag: DW_TAG_structure_type, name: "S1", line: 1, size: 128, align: 64, file: !42, scope: !2, elements: !13)
 !13 = !{!14, !17}
 !14 = !DIDerivedType(tag: DW_TAG_member, name: "m", line: 2, size: 64, align: 64, file: !42, scope: !1, baseType: !15)
 !15 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, scope: !2, baseType: !16)
 !16 = !DIBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
 !17 = !DIDerivedType(tag: DW_TAG_member, name: "nums", line: 3, size: 32, align: 32, offset: 64, file: !42, scope: !1, baseType: !5)
 !18 = !DILocalVariable(name: "nums", line: 7, arg: 2, scope: !0, file: !1, type: !5)
-!19 = !DIGlobalVariable(name: "p", line: 14, isLocal: false, isDefinition: true, scope: !2, file: !1, type: !11)
+!19 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "p", line: 14, isLocal: false, isDefinition: true, scope: !2, file: !1, type: !11))
 !20 = !DILocation(line: 7, column: 13, scope: !0)
 !21 = !DILocation(line: 7, column: 21, scope: !0)
 !22 = !DILocation(line: 9, column: 3, scope: !23)
 !23 = distinct !DILexicalBlock(line: 8, column: 1, file: !1, scope: !0)
 !27 = !DILocation(line: 10, column: 3, scope: !23)
 !29 = !DILocation(line: 11, column: 3, scope: !23)
 !30 = !{%struct.S1* @p}
 !31 = !DILocation(line: 7, column: 13, scope: !0, inlinedAt: !32)

test/DebugInfo/X86/dbg-value-regmask-clobber.ll

 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
 !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
 !10 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !11 = !{!12, !13}
 !12 = !DILocalVariable(name: "argv", arg: 2, scope: !4, file: !1, line: 4, type: !8)
 !13 = !DILocalVariable(name: "argc", arg: 1, scope: !4, file: !1, line: 4, type: !7)
 !14 = !{!15}
-!15 = !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !16, isLocal: false, isDefinition: true)
+!15 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !16, isLocal: false, isDefinition: true))
 !16 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
 !17 = !{i32 2, !"Dwarf Version", i32 4}
 !18 = !{i32 2, !"Debug Info Version", i32 3}
 !19 = !{i32 1, !"PIC Level", i32 2}
 !20 = !{!"clang version 3.9.0 (trunk 260617) (llvm/trunk 260619)"}
 !21 = !DIExpression()
 !22 = !DILocation(line: 4, column: 27, scope: !4)
 !23 = !DILocation(line: 4, column: 14, scope: !4)

test/DebugInfo/X86/debug-info-access.ll

 !26 = !DISubroutineType(types: !27)
 !27 = !{null, !28}
 !28 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !22)
 !30 = distinct !DISubprogram(name: "free", linkageName: "_Z4freev", line: 35, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 35, file: !1, scope: !31, type: !32, variables: !2)
 !31 = !DIFile(filename: "/llvm/tools/clang/test/CodeGenCXX/debug-info-access.cpp", directory: "")
 !32 = !DISubroutineType(types: !33)
 !33 = !{null}
 !34 = !{!35, !36, !37}
-!35 = !DIGlobalVariable(name: "a", line: 37, isLocal: false, isDefinition: true, scope: null, file: !31, type: !4)
-!36 = !DIGlobalVariable(name: "b", line: 38, isLocal: false, isDefinition: true, scope: null, file: !31, type: !12)
-!37 = !DIGlobalVariable(name: "u", line: 39, isLocal: false, isDefinition: true, scope: null, file: !31, type: !22)
+!35 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 37, isLocal: false, isDefinition: true, scope: null, file: !31, type: !4))
+!36 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", line: 38, isLocal: false, isDefinition: true, scope: null, file: !31, type: !12))
+!37 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "u", line: 39, isLocal: false, isDefinition: true, scope: null, file: !31, type: !22))
 !38 = !{i32 2, !"Dwarf Version", i32 2}
 !39 = !{i32 2, !"Debug Info Version", i32 3}
 !40 = !{!"clang version 3.6.0 "}
 !41 = !DILocation(line: 35, column: 14, scope: !30)

test/DebugInfo/X86/debug-info-packed-struct.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!45, !46}
 !llvm.ident = !{!47}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 240791) (llvm/trunk 240790)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "/llvm/tools/clang/test/CodeGen/<stdin>", directory: "/llvm/_build.ninja.release")
 !2 = !{}
 !3 = !{!4, !18, !25, !35}
-!4 = !DIGlobalVariable(name: "l0", scope: !0, file: !5, line: 88, type: !6, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "l0", scope: !0, file: !5, line: 88, type: !6, isLocal: false, isDefinition: true))
 !5 = !DIFile(filename: "/llvm/tools/clang/test/CodeGen/debug-info-packed-struct.c", directory: "/llvm/_build.ninja.release")
 !6 = !DICompositeType(tag: DW_TAG_structure_type, name: "layout0", file: !5, line: 15, size: 192, elements: !7)
 !7 = !{!8, !10, !17}
 !8 = !DIDerivedType(tag: DW_TAG_member, name: "l0_ofs0", scope: !6, file: !5, line: 16, baseType: !9, size: 8)
 !9 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
 !10 = !DIDerivedType(tag: DW_TAG_member, name: "l0_ofs8", scope: !6, file: !5, line: 17, baseType: !11, size: 64, offset: 64)
 !11 = !DICompositeType(tag: DW_TAG_structure_type, name: "size8", file: !5, line: 11, size: 64, elements: !12)
 !12 = !{!13, !15}
 !13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !11, file: !5, line: 12, baseType: !14, size: 4)
 !14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 !15 = !DIDerivedType(tag: DW_TAG_member, name: "l", scope: !11, file: !5, line: 13, baseType: !16, size: 60, offset: 4)
 !16 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
 !17 = !DIDerivedType(tag: DW_TAG_member, name: "l0_ofs16", scope: !6, file: !5, line: 18, baseType: !14, size: 1, offset: 128)
-!18 = !DIGlobalVariable(name: "l1", scope: !0, file: !5, line: 89, type: !19, isLocal: false, isDefinition: true)
+!18 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "l1", scope: !0, file: !5, line: 89, type: !19, isLocal: false, isDefinition: true))
 !19 = !DICompositeType(tag: DW_TAG_structure_type, name: "layout1", file: !5, line: 34, size: 96, elements: !20)
 !20 = !{!21, !22, !24}
 !21 = !DIDerivedType(tag: DW_TAG_member, name: "l1_ofs0", scope: !19, file: !5, line: 35, baseType: !9, size: 8)
 !22 = !DIDerivedType(tag: DW_TAG_member, name: "l1_ofs1", scope: !19, file: !5, line: 36, baseType: !23, size: 64, offset: 8)
 !23 = !DICompositeType(tag: DW_TAG_structure_type, name: "size8_anon", file: !5, line: 30, size: 64, elements: !2)
 !24 = !DIDerivedType(tag: DW_TAG_member, name: "l1_ofs9", scope: !19, file: !5, line: 37, baseType: !14, size: 1, offset: 72)
-!25 = !DIGlobalVariable(name: "l2", scope: !0, file: !5, line: 90, type: !26, isLocal: false, isDefinition: true)
+!25 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "l2", scope: !0, file: !5, line: 90, type: !26, isLocal: false, isDefinition: true))
 !26 = !DICompositeType(tag: DW_TAG_structure_type, name: "layout2", file: !5, line: 54, size: 80, elements: !27)
 !27 = !{!28, !29, !34}
 !28 = !DIDerivedType(tag: DW_TAG_member, name: "l2_ofs0", scope: !26, file: !5, line: 55, baseType: !9, size: 8)
 !29 = !DIDerivedType(tag: DW_TAG_member, name: "l2_ofs1", scope: !26, file: !5, line: 56, baseType: !30, size: 64, offset: 8)
 !30 = !DICompositeType(tag: DW_TAG_structure_type, name: "size8_pack1", file: !5, line: 50, size: 64, elements: !31)
 !31 = !{!32, !33}
 !32 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !30, file: !5, line: 51, baseType: !14, size: 4)
 !33 = !DIDerivedType(tag: DW_TAG_member, name: "l", scope: !30, file: !5, line: 52, baseType: !16, size: 60, offset: 4)
 !34 = !DIDerivedType(tag: DW_TAG_member, name: "l2_ofs9", scope: !26, file: !5, line: 57, baseType: !14, size: 1, offset: 72)
-!35 = !DIGlobalVariable(name: "l3", scope: !0, file: !5, line: 91, type: !36, isLocal: false, isDefinition: true)
+!35 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "l3", scope: !0, file: !5, line: 91, type: !36, isLocal: false, isDefinition: true))
 !36 = !DICompositeType(tag: DW_TAG_structure_type, name: "layout3", file: !5, line: 76, size: 128, elements: !37)
 !37 = !{!38, !39, !44}
 !38 = !DIDerivedType(tag: DW_TAG_member, name: "l3_ofs0", scope: !36, file: !5, line: 77, baseType: !9, size: 8)
 !39 = !DIDerivedType(tag: DW_TAG_member, name: "l3_ofs4", scope: !36, file: !5, line: 78, baseType: !40, size: 64, offset: 32)
 !40 = !DICompositeType(tag: DW_TAG_structure_type, name: "size8_pack4", file: !5, line: 72, size: 64, elements: !41)
 !41 = !{!42, !43}
 !42 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !40, file: !5, line: 73, baseType: !14, size: 4)
 !43 = !DIDerivedType(tag: DW_TAG_member, name: "l", scope: !40, file: !5, line: 74, baseType: !16, size: 60, offset: 4)
 !44 = !DIDerivedType(tag: DW_TAG_member, name: "l3_ofs12", scope: !36, file: !5, line: 79, baseType: !14, size: 1, offset: 96)
 !45 = !{i32 2, !"Dwarf Version", i32 2}
 !46 = !{i32 2, !"Debug Info Version", i32 3}
 !47 = !{!"clang version 3.7.0 (trunk 240791) (llvm/trunk 240790)"}

test/DebugInfo/X86/debug-info-static-member.ll

 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 171914)", isOptimized: false, emissionKind: FullDebug, file: !33, enums: !1, retainedTypes: !1, globals: !10, imports:  !1)
 !1 = !{}
 !5 = distinct !DISubprogram(name: "main", line: 18, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 23, file: !33, scope: !6, type: !7, variables: !1)
 !6 = !DIFile(filename: "/usr/local/google/home/blaikie/Development/llvm/src/tools/clang/test/CodeGenCXX/debug-info-static-member.cpp", directory: "/home/blaikie/local/Development/llvm/build/clang/x86-64/Debug/llvm")
 !7 = !DISubroutineType(types: !8)
 !8 = !{!9}
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !{!12, !27, !28}
-!12 = !DIGlobalVariable(name: "a", linkageName: "_ZN1C1aE", line: 14, isLocal: false, isDefinition: true, scope: null, file: !6, type: !9, declaration: !15)
+!12 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", linkageName: "_ZN1C1aE", line: 14, isLocal: false, isDefinition: true, scope: null, file: !6, type: !9, declaration: !15))
 !13 = !DICompositeType(tag: DW_TAG_class_type, name: "C", line: 1, size: 32, align: 32, file: !33, elements: !14)
 !14 = !{!15, !16, !19, !20, !23, !24, !26}
 !15 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 3, flags: DIFlagPrivate | DIFlagStaticMember, file: !33, scope: !13, baseType: !9)
 !16 = !DIDerivedType(tag: DW_TAG_member, name: "const_a", line: 4, flags: DIFlagPrivate | DIFlagStaticMember, file: !33, scope: !13, baseType: !17, extraData: i1 true)
 !17 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !18)
 !18 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean)
 !19 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 6, flags: DIFlagProtected | DIFlagStaticMember, file: !33, scope: !13, baseType: !9)
 !20 = !DIDerivedType(tag: DW_TAG_member, name: "const_b", line: 7, flags: DIFlagProtected | DIFlagStaticMember, file: !33, scope: !13, baseType: !21, extraData: float 0x40091EB860000000)
 !21 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !22)
 !22 = !DIBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
 !23 = !DIDerivedType(tag: DW_TAG_member, name: "c", line: 9, flags: DIFlagPublic | DIFlagStaticMember, file: !33, scope: !13, baseType: !9)
 !24 = !DIDerivedType(tag: DW_TAG_member, name: "const_c", line: 10, flags: DIFlagPublic | DIFlagStaticMember, file: !33, scope: !13, baseType: !25, extraData: i32 18)
 !25 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !9)
 !26 = !DIDerivedType(tag: DW_TAG_member, name: "d", line: 11, size: 32, align: 32, flags: DIFlagPublic, file: !33, scope: !13, baseType: !9)
-!27 = !DIGlobalVariable(name: "b", linkageName: "_ZN1C1bE", line: 15, isLocal: false, isDefinition: true, scope: null, file: !6, type: !9, declaration: !19)
-!28 = !DIGlobalVariable(name: "c", linkageName: "_ZN1C1cE", line: 16, isLocal: false, isDefinition: true, scope: null, file: !6, type: !9, declaration: !23)
+!27 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", linkageName: "_ZN1C1bE", line: 15, isLocal: false, isDefinition: true, scope: null, file: !6, type: !9, declaration: !19))
+!28 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c", linkageName: "_ZN1C1cE", line: 16, isLocal: false, isDefinition: true, scope: null, file: !6, type: !9, declaration: !23))
 !29 = !DILocalVariable(name: "instance_C", line: 20, scope: !5, file: !6, type: !13)
 !30 = !DILocation(line: 20, scope: !5)
 !31 = !DILocation(line: 21, scope: !5)
 !32 = !DILocation(line: 22, scope: !5)
 !33 = !DIFile(filename: "/usr/local/google/home/blaikie/Development/llvm/src/tools/clang/test/CodeGenCXX/debug-info-static-member.cpp", directory: "/home/blaikie/local/Development/llvm/build/clang/x86-64/Debug/llvm")
 ; PRESENT verifies that static member declarations have these attributes:
 ; external, declaration, accessibility, and either DW_AT_linkage_name
 ; (for variables) or DW_AT_const_value (for constants).

test/DebugInfo/X86/debug-loc-frame.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!10, !11}
 !llvm.ident = !{!12}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 273961)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "frame.c", directory: "/home/user/test")
 !2 = !{}
 !3 = !{!4, !6, !7, !8}
-!4 = distinct !DIGlobalVariable(name: "data", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true)
+!4 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "data", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true))
 !5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!6 = distinct !DIGlobalVariable(name: "sum", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true)
-!7 = distinct !DIGlobalVariable(name: "zero", scope: !0, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true)
-!8 = distinct !DIGlobalVariable(name: "ptr", scope: !0, file: !1, line: 4, type: !9, isLocal: false, isDefinition: true)
+!6 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "sum", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true))
+!7 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "zero", scope: !0, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true))
+!8 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "ptr", scope: !0, file: !1, line: 4, type: !9, isLocal: false, isDefinition: true))
 !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64, align: 64)
 !10 = !{i32 2, !"Dwarf Version", i32 4}
 !11 = !{i32 2, !"Debug Info Version", i32 3}
 !12 = !{!"clang version 3.9.0 (trunk 273961)"}
 !13 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 8, type: !14, isLocal: false, isDefinition: true, scopeLine: 9, isOptimized: true, unit: !0, variables: !16)
 !14 = !DISubroutineType(types: !15)
 !15 = !{!5}
 !16 = !{!17}

test/DebugInfo/X86/debugger-tune.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!6, !7}
 !llvm.ident = !{!8}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 238808)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "debugger-tune.cpp", directory: "/home/probinson/projects/scratch")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "globalvar", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "globalvar", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true))
 !5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !6 = !{i32 2, !"Dwarf Version", i32 4}
 !7 = !{i32 2, !"Debug Info Version", i32 3}
 !8 = !{!"clang version 3.7.0 (trunk 238808)"}

test/DebugInfo/X86/decl-derived-member.ll

 !21 = !{null, !22}
 !22 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !8)
 !23 = !DISubprogram(name: "base", isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scope: !8, type: !20)
 !24 = distinct !DISubprogram(name: "~foo", linkageName: "_ZN3fooD2Ev", line: 5, isLocal: false, isDefinition: true, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 5, file: !1, scope: !4, type: !15, declaration: !25, variables: !2)
 !25 = !DISubprogram(name: "~foo", isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scope: !4, type: !15)
 !26 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_decl_derived_member.cpp", isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !0, file: !1, scope: !11, type: !27, variables: !2)
 !27 = !DISubroutineType(types: !2)
 !28 = !{!29}
-!29 = !DIGlobalVariable(name: "f", line: 8, isLocal: false, isDefinition: true, scope: null, file: !11, type: !4)
+!29 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "f", line: 8, isLocal: false, isDefinition: true, scope: null, file: !11, type: !4))
 !30 = !{i32 2, !"Dwarf Version", i32 4}
 !31 = !{i32 2, !"Debug Info Version", i32 3}
 !32 = !{!"clang version 3.7.0 (trunk 227104) (llvm/trunk 227103)"}
 !33 = !DILocation(line: 8, column: 5, scope: !10)
 !34 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !14, type: !35)
 !35 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
 !36 = !DIExpression()
 !37 = !DILocation(line: 0, scope: !14)

test/DebugInfo/X86/dllimport.ll

 ; RUN: llc -mtriple=i686-pc-windows-msvc -O0 -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
 
 ; CHECK-NOT: DW_AT_location
 
 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
 target triple = "i686-pc-windows-msvc"
 
 @"\01?id@?$numpunct@D@@0HA" = available_externally dllimport global i32 0, align 4, !dbg !4
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!13, !14}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 272628) (llvm/trunk 272566)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
 !1 = !DIFile(filename: "/usr/local/google/home/majnemer/Downloads/<stdin>", directory: "/usr/local/google/home/majnemer/llvm/src")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "id", linkageName: "\01?id@?$numpunct@D@@0HA", scope: !0, file: !5, line: 4, type: !6, isLocal: false, isDefinition: true, declaration: !7)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "id", linkageName: "\01?id@?$numpunct@D@@0HA", scope: !0, file: !5, line: 4, type: !6, isLocal: false, isDefinition: true, declaration: !7))
 !5 = !DIFile(filename: "/usr/local/google/home/majnemer/Downloads/t.ii", directory: "/usr/local/google/home/majnemer/llvm/src")
 !6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = !DIDerivedType(tag: DW_TAG_member, name: "id", scope: !8, file: !5, line: 2, baseType: !6, flags: DIFlagStaticMember)
 !8 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "numpunct<char>", file: !5, line: 2, size: 8, align: 8, elements: !9, templateParams: !10)
 !9 = !{!7}
 !10 = !{!11}
 !11 = !DITemplateTypeParameter(type: !12)
 !12 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !13 = !{i32 2, !"Dwarf Version", i32 3}
 !14 = !{i32 2, !"Debug Info Version", i32 3}

test/DebugInfo/X86/dwarf-aranges-no-dwarf-labels.ll

 !10 = !DILocalVariable(name: "bar", line: 2, arg: 1, scope: !4, file: !5, type: !8)
 !11 = distinct !DISubprogram(name: "foo2", linkageName: "_Z4foo2i", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !6, variables: !12)
 !12 = !{!13}
 !13 = !DILocalVariable(name: "bar2", line: 3, arg: 1, scope: !11, file: !5, type: !8)
 !14 = distinct !DISubprogram(name: "main", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 5, file: !1, scope: !5, type: !15, variables: !2)
 !15 = !DISubroutineType(types: !16)
 !16 = !{!8}
 !17 = !{!18}
-!18 = !DIGlobalVariable(name: "global", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8)
+!18 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "global", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8))
 !19 = !{i32 2, !"Dwarf Version", i32 4}
 !20 = !DILocation(line: 2, scope: !4)
 !21 = !DILocation(line: 3, scope: !11)
 !22 = !DILocation(line: 6, scope: !14)
 !23 = !{!"int", !24}
 !24 = !{!"omnipotent char", !25}
 !25 = !{!"Simple C/C++ TBAA"}
 !26 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/dwarf-aranges.ll

 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !8, imports: !2)
 !1 = !DIFile(filename: "test.c", directory: "/home/kayamon")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "some_code", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !0, scopeLine: 6, file: !1, scope: !5, type: !6, variables: !2)
 !5 = !DIFile(filename: "test.c", directory: "/home/kayamon")
 !6 = !DISubroutineType(types: !7)
 !7 = !{null}
 !8 = !{!9, !11, !12}
-!9 = !DIGlobalVariable(name: "some_data", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !10)
+!9 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "some_data", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !10))
 !10 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!11 = !DIGlobalVariable(name: "some_other", line: 3, isLocal: false, isDefinition: true, scope: null, file: !5, type: !10)
-!12 = !DIGlobalVariable(name: "some_bss", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !10)
+!11 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "some_other", line: 3, isLocal: false, isDefinition: true, scope: null, file: !5, type: !10))
+!12 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "some_bss", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !10))
 !13 = !{i32 2, !"Dwarf Version", i32 4}
 !14 = !DILocation(line: 7, scope: !4)
 !15 = !DILocation(line: 8, scope: !4)
 !16 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/dwarf-linkage-names.ll

 !1 = !DIFile(filename: "dwarf-linkage-names.cpp", directory: "/home/probinson/projects/scratch")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "bar", linkageName: "_ZN4test3barEv", scope: !5, file: !1, line: 3, type: !6, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
 !5 = !DINamespace(name: "test", scope: null, file: !1, line: 1)
 !6 = !DISubroutineType(types: !7)
 !7 = !{!8}
 !8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{!10}
-!10 = !DIGlobalVariable(name: "global_var", linkageName: "_ZN4test10global_varE", scope: !5, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "global_var", linkageName: "_ZN4test10global_varE", scope: !5, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true))
 !11 = !{i32 2, !"Dwarf Version", i32 4}
 !12 = !{i32 2, !"Debug Info Version", i32 3}
 !13 = !{!"clang version 3.8.0 (trunk 244662)"}
 !14 = !DILocation(line: 3, column: 21, scope: !4)
 !15 = !DILocation(line: 3, column: 14, scope: !4)

test/DebugInfo/X86/dwarf-public-names.ll

 !17 = !{} ; previously: invalid DW_TAG_base_type
 !18 = distinct !DISubprogram(name: "static_member_function", linkageName: "_ZN1C22static_member_functionEv", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 13, file: !4, scope: null, type: !15, declaration: !14, variables: !1)
 !19 = distinct !DISubprogram(name: "global_function", linkageName: "_Z15global_functionv", line: 19, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 19, file: !4, scope: !4, type: !15, variables: !1)
 !20 = distinct !DISubprogram(name: "global_namespace_function", linkageName: "_ZN2ns25global_namespace_functionEv", line: 24, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 24, file: !4, scope: !21, type: !22, variables: !1)
 !21 = !DINamespace(name: "ns", line: 23, file: !4, scope: null)
 !22 = !DISubroutineType(types: !23)
 !23 = !{null}
 !24 = !{!25, !26, !27}
-!25 = !DIGlobalVariable(name: "static_member_variable", linkageName: "_ZN1C22static_member_variableE", line: 7, isLocal: false, isDefinition: true, scope: !8, file: !4, type: !11, declaration: !10)
-!26 = !DIGlobalVariable(name: "global_variable", line: 17, isLocal: false, isDefinition: true, scope: null, file: !4, type: !8)
-!27 = !DIGlobalVariable(name: "global_namespace_variable", linkageName: "_ZN2ns25global_namespace_variableE", line: 27, isLocal: false, isDefinition: true, scope: !21, file: !4, type: !11)
+!25 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "static_member_variable", linkageName: "_ZN1C22static_member_variableE", line: 7, isLocal: false, isDefinition: true, scope: !8, file: !4, type: !11, declaration: !10))
+!26 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "global_variable", line: 17, isLocal: false, isDefinition: true, scope: null, file: !4, type: !8))
+!27 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "global_namespace_variable", linkageName: "_ZN2ns25global_namespace_variableE", line: 27, isLocal: false, isDefinition: true, scope: !21, file: !4, type: !11))
 !28 = !DILocalVariable(name: "this", line: 9, arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !3, file: !4, type: !29)
 !29 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, baseType: !8)
 !30 = !DILocation(line: 9, scope: !3)
 !31 = !DILocation(line: 10, scope: !3)
 !32 = !DILocation(line: 11, scope: !3)
 !33 = !DILocation(line: 14, scope: !18)
 !34 = !DILocation(line: 20, scope: !19)
 !35 = !DILocation(line: 25, scope: !20)
 !36 = !DILocation(line: 26, scope: !20)
 !37 = !DIFile(filename: "dwarf-public-names.cpp", directory: "/usr2/kparzysz/s.hex/t")
 !38 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/empty-array.ll

 ; CHECK-NEXT: DW_AT_encoding [DW_FORM_data1]   (DW_ATE_unsigned)
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!21}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: FullDebug, file: !20, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "t.cpp", directory: "/Volumes/Sandbox/llvm")
 !7 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 1, align: 32, file: !20, elements: !8)
 !8 = !{!9, !14}
 !9 = !DIDerivedType(tag: DW_TAG_member, name: "x", line: 1, flags: DIFlagPrivate, file: !20, scope: !7, baseType: !10)
 !10 = !DICompositeType(tag: DW_TAG_array_type, align: 32, baseType: !11, elements: !12)
 !11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !12 = !{!13}
 !13 = !DISubrange(count: -1)
 !14 = !DISubprogram(name: "A", line: 1, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !6, scope: !7, type: !15)
 !15 = !DISubroutineType(types: !16)
 !16 = !{null, !17}
 !17 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !7)
 !20 = !DIFile(filename: "t.cpp", directory: "/Volumes/Sandbox/llvm")
 !21 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/enum-class.ll

 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)
 !10 = !{!11}
 !11 = !DIEnumerator(name: "B1", value: 1) ; [ DW_TAG_enumerator ]
 !12 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "C", line: 3, size: 32, align: 32, file: !4, elements: !13)
 !13 = !{!14}
 !14 = !DIEnumerator(name: "C1", value: 1) ; [ DW_TAG_enumerator ]
 !15 = !{}
 !17 = !{!19, !20, !21}
-!19 = !DIGlobalVariable(name: "a", line: 4, isLocal: false, isDefinition: true, scope: null, file: !4, type: !3)
-!20 = !DIGlobalVariable(name: "b", line: 5, isLocal: false, isDefinition: true, scope: null, file: !4, type: !8)
-!21 = !DIGlobalVariable(name: "c", line: 6, isLocal: false, isDefinition: true, scope: null, file: !4, type: !12)
+!19 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 4, isLocal: false, isDefinition: true, scope: null, file: !4, type: !3))
+!20 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", line: 5, isLocal: false, isDefinition: true, scope: null, file: !4, type: !8))
+!21 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c", line: 6, isLocal: false, isDefinition: true, scope: null, file: !4, type: !12))
 !22 = !DIFile(filename: "foo.cpp", directory: "/Users/echristo/tmp")
 
 ; CHECK: DW_TAG_enumeration_type [{{.*}}]
 ; CHECK: DW_AT_type [DW_FORM_ref4]
 ; CHECK: DW_AT_enum_class [DW_FORM_flag_present] (true)
 ; CHECK: DW_AT_name [DW_FORM_strp]      ( .debug_str[{{.*}}] = "A")
 
 ; CHECK: DW_TAG_enumeration_type [{{.*}}] *
 ; CHECK: DW_AT_type [DW_FORM_ref4]
 ; CHECK: DW_AT_enum_class [DW_FORM_flag_present] (true)
 ; CHECK: DW_AT_name [DW_FORM_strp]          ( .debug_str[{{.*}}] = "B")
 
 ; CHECK: DW_TAG_enumeration_type [6]
 ; CHECK-NOT: DW_AT_enum_class
 ; CHECK: DW_AT_name [DW_FORM_strp]      ( .debug_str[{{.*}}] = "C")
 !23 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/enum-fwd-decl.ll

 ; RUN: llc -O0 -mtriple=x86_64-apple-darwin %s -o %t -filetype=obj
 ; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
 
 @e = global i16 0, align 2, !dbg !5
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 165274) (llvm/trunk 165272)", isOptimized: false, emissionKind: FullDebug, file: !8, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "e", line: 2, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "e", line: 2, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "foo.cpp", directory: "/tmp")
 !7 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "E", line: 1, size: 16, align: 16, flags: DIFlagFwdDecl, file: !8)
 !8 = !DIFile(filename: "foo.cpp", directory: "/tmp")
 
 ; CHECK: DW_TAG_enumeration_type
 ; CHECK-NEXT: DW_AT_name
 ; CHECK-NEXT: DW_AT_byte_size
 ; CHECK-NEXT: DW_AT_declaration
 !9 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/externaltyperef.ll

 !llvm.ident = !{!16}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 242039) (llvm/trunk 242046)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, globals: !5, imports: !11)
 !1 = !DIFile(filename: "test.cpp", directory: "/")
 !2 = !{}
 !3 = !{!4, !9}
 !4 = !DICompositeType(tag: DW_TAG_class_type, name: "A", file: !1, flags: DIFlagExternalTypeRef, identifier: "_ZTS1A")
 !5 = !{!6}
-!6 = !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true)
+!6 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true))
 !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 64, align: 64)
 !8 = !DICompositeType(tag: DW_TAG_class_type, name: "B", file: !1, flags: DIFlagExternalTypeRef, identifier: "_ZTS1B")
 !9 = !DICompositeType(tag: DW_TAG_class_type, name: "A", file: !1, flags: DIFlagExternalTypeRef, identifier: "_ZTSN1N1BE")
 !10 = !DINamespace(name: "N", scope: null, file: !1, line: 1)
 !11 = !{!12}
 !12 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !0, entity: !9, line: 4)
 !13 = !{i32 2, !"Dwarf Version", i32 2}
 !14 = !{i32 2, !"Debug Info Version", i32 3}
 !15 = !{i32 1, !"PIC Level", i32 2}
 !16 = !{!"clang version 3.7.0 (trunk 242039) (llvm/trunk 242046)"}

test/DebugInfo/X86/fission-cu.ll

 ; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
 ; RUN: llvm-dwarfdump -debug-dump=all %t | FileCheck %s
 ; RUN: llvm-readobj --relocations %t | FileCheck --check-prefix=OBJ %s
 ; RUN: llvm-objdump -h %t | FileCheck --check-prefix=HDR %s
 
 @a = common global i32 0, align 4, !dbg !5
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 169021) (llvm/trunk 169020)", isOptimized: false, splitDebugFilename: "baz.dwo", emissionKind: FullDebug, file: !8, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "baz.c", directory: "/usr/local/google/home/echristo/tmp")
 !7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !8 = !DIFile(filename: "baz.c", directory: "/usr/local/google/home/echristo/tmp")
 
 ; Check that the skeleton compile unit contains the proper attributes:
 ; This DIE has the following attributes: DW_AT_comp_dir, DW_AT_stmt_list,
 ; DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges, DW_AT_dwo_name, DW_AT_dwo_id,
 ; DW_AT_ranges_base, DW_AT_addr_base.

test/DebugInfo/X86/generate-odr-hash.ll

 !30 = !{!31}
 !31 = !DISubprogram(name: "walrus", line: 25, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 25, file: !1, scope: !28, type: !32)
 !32 = !DISubroutineType(types: !33)
 !33 = !{null, !34}
 !34 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !28)
 !36 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__I_a", line: 25, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagArtificial, isOptimized: false, unit: !0, scopeLine: 25, file: !1, scope: !23, type: !37, variables: !2)
 !37 = !DISubroutineType(types: !2)
 !38 = !{!39, !40, !41, !42}
-!39 = !DIGlobalVariable(name: "b", line: 3, isLocal: false, isDefinition: true, scope: null, file: !23, type: !4)
-!40 = !DIGlobalVariable(name: "animal", linkageName: "_ZN7echidna8capybara8mongoose6animalE", line: 18, isLocal: false, isDefinition: true, scope: !7, file: !23, type: !6)
-!41 = !DIGlobalVariable(name: "w", line: 29, isLocal: true, isDefinition: true, scope: null, file: !23, type: !28)
-!42 = !DIGlobalVariable(name: "wom", line: 38, isLocal: false, isDefinition: true, scope: null, file: !23, type: !14)
+!39 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", line: 3, isLocal: false, isDefinition: true, scope: null, file: !23, type: !4))
+!40 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "animal", linkageName: "_ZN7echidna8capybara8mongoose6animalE", line: 18, isLocal: false, isDefinition: true, scope: !7, file: !23, type: !6))
+!41 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "w", line: 29, isLocal: true, isDefinition: true, scope: null, file: !23, type: !28))
+!42 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "wom", line: 38, isLocal: false, isDefinition: true, scope: null, file: !23, type: !14))
 !43 = !{i32 2, !"Dwarf Version", i32 4}
 !44 = !{i32 1, !"Debug Info Version", i32 3}
 !45 = !{!"clang version 3.5 "}
 !46 = !DILocalVariable(name: "b", line: 7, scope: !22, file: !23, type: !47)
 !47 = !DICompositeType(tag: DW_TAG_structure_type, name: "baz", line: 6, size: 8, align: 8, file: !1, scope: !22, elements: !2)
 !48 = !DILocation(line: 7, scope: !22)
 !49 = !DILocation(line: 8, scope: !22)
 !50 = !DILocation(line: 29, scope: !26)
 !51 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !27, type: !52)
 !52 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !28)
 !53 = !DILocation(line: 0, scope: !27)
 !54 = !DILocation(line: 25, scope: !27)
 !55 = !DILocation(line: 25, scope: !36)

test/DebugInfo/X86/gnu-public-names.ll

 !24 = !DISubroutineType(types: !25)
 !25 = !{null}
 !26 = distinct !DISubprogram(name: "f3", linkageName: "_Z2f3v", scope: !1, file: !1, line: 40, type: !27, isLocal: false, isDefinition: true, scopeLine: 40, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
 !27 = !DISubroutineType(types: !28)
 !28 = !{!29}
 !29 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64, align: 64)
 !30 = distinct !DISubprogram(name: "f7", linkageName: "_Z2f7v", scope: !1, file: !1, line: 57, type: !13, isLocal: false, isDefinition: true, scopeLine: 57, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
 !31 = !{!32, !33, !34, !35, !36, !37, !39, !41}
-!32 = !DIGlobalVariable(name: "static_member_variable", linkageName: "_ZN1C22static_member_variableE", scope: !0, file: !1, line: 7, type: !7, isLocal: false, isDefinition: true, declaration: !6)
-!33 = !DIGlobalVariable(name: "global_variable", scope: !0, file: !1, line: 17, type: !4, isLocal: false, isDefinition: true)
-!34 = !DIGlobalVariable(name: "global_namespace_variable", linkageName: "_ZN2ns25global_namespace_variableE", scope: !16, file: !1, line: 27, type: !7, isLocal: false, isDefinition: true)
-!35 = !DIGlobalVariable(name: "d", linkageName: "_ZN2ns1dE", scope: !16, file: !1, line: 31, type: !15, isLocal: false, isDefinition: true)
-!36 = !DIGlobalVariable(name: "z", scope: !26, file: !1, line: 41, type: !7, isLocal: true, isDefinition: true)
-!37 = !DIGlobalVariable(name: "i", linkageName: "_ZN12_GLOBAL__N_11iE", scope: !38, file: !1, line: 37, type: !7, isLocal: true, isDefinition: true)
+!32 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "static_member_variable", linkageName: "_ZN1C22static_member_variableE", scope: !0, file: !1, line: 7, type: !7, isLocal: false, isDefinition: true, declaration: !6))
+!33 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "global_variable", scope: !0, file: !1, line: 17, type: !4, isLocal: false, isDefinition: true))
+!34 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "global_namespace_variable", linkageName: "_ZN2ns25global_namespace_variableE", scope: !16, file: !1, line: 27, type: !7, isLocal: false, isDefinition: true))
+!35 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "d", linkageName: "_ZN2ns1dE", scope: !16, file: !1, line: 31, type: !15, isLocal: false, isDefinition: true))
+!36 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "z", scope: !26, file: !1, line: 41, type: !7, isLocal: true, isDefinition: true))
+!37 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", linkageName: "_ZN12_GLOBAL__N_11iE", scope: !38, file: !1, line: 37, type: !7, isLocal: true, isDefinition: true))
 !38 = !DINamespace(scope: null, file: !1, line: 36)
-!39 = !DIGlobalVariable(name: "b", linkageName: "_ZN12_GLOBAL__N_15inner1bE", scope: !40, file: !1, line: 47, type: !7, isLocal: true, isDefinition: true)
+!39 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", linkageName: "_ZN12_GLOBAL__N_15inner1bE", scope: !40, file: !1, line: 47, type: !7, isLocal: true, isDefinition: true))
 !40 = !DINamespace(name: "inner", scope: !38, file: !1, line: 46)
-!41 = !DIGlobalVariable(name: "c", linkageName: "_ZN5outer12_GLOBAL__N_11cE", scope: !42, file: !1, line: 53, type: !7, isLocal: true, isDefinition: true)
+!41 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c", linkageName: "_ZN5outer12_GLOBAL__N_11cE", scope: !42, file: !1, line: 53, type: !7, isLocal: true, isDefinition: true))
 !42 = !DINamespace(scope: !43, file: !1, line: 52)
 !43 = !DINamespace(name: "outer", scope: null, file: !1, line: 51)
 !44 = !{!45, !47}
 !45 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !0, entity: !46, line: 34)
 !46 = !DIGlobalVariable(name: "global_namespace_variable_decl", linkageName: "_ZN2ns30global_namespace_variable_declE", scope: !16, file: !1, line: 28, type: !7, isLocal: false, isDefinition: false)
 !47 = !DIImportedEntity(tag: DW_TAG_imported_module, scope: !43, entity: !42, line: 43)
 !48 = !{i32 2, !"Dwarf Version", i32 4}
 !49 = !{i32 2, !"Debug Info Version", i32 3}

test/DebugInfo/X86/inline-member-function.ll

 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)
 !13 = distinct !DISubprogram(name: "main", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 7, file: !1, scope: !14, type: !15, variables: !2)
 !14 = !DIFile(filename: "inline.cpp", directory: "/tmp/dbginfo")
 !15 = !DISubroutineType(types: !16)
 !16 = !{!9}
 !17 = distinct !DISubprogram(name: "func", linkageName: "_ZN3foo4funcEi", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 2, file: !1, scope: !4, type: !7, declaration: !6, variables: !2)
 !18 = !{!19}
-!19 = !DIGlobalVariable(name: "i", line: 5, isLocal: false, isDefinition: true, scope: null, file: !14, type: !9)
+!19 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", line: 5, isLocal: false, isDefinition: true, scope: null, file: !14, type: !9))
 !20 = !{i32 2, !"Dwarf Version", i32 4}
 !21 = !{i32 1, !"Debug Info Version", i32 3}
 !22 = !{!"clang version 3.5.0 "}
 !23 = !DILocation(line: 8, scope: !13)
 !24 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !17, type: !25)
 !25 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
 !26 = !DILocation(line: 0, scope: !17, inlinedAt: !23)
 !27 = !DILocalVariable(name: "x", line: 2, arg: 2, scope: !17, file: !14, type: !9)
 !28 = !DILocation(line: 2, scope: !17, inlinedAt: !23)

test/DebugInfo/X86/inline-namespace.ll

 target triple = "x86_64-apple-macosx10.12.0"
 
 @_ZN6normal7inlined1iE = global i32 0, align 4, !dbg !0
 
 !llvm.dbg.cu = !{!5}
 !llvm.module.flags = !{!8, !9, !10}
 !llvm.ident = !{!11}
 
-!0 = distinct !DIGlobalVariable(name: "i", linkageName: "_ZN6normal7inlined1iE", scope: !1, file: !2, line: 1, type: !4, isLocal: false, isDefinition: true)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", linkageName: "_ZN6normal7inlined1iE", scope: !1, file: !2, line: 1, type: !4, isLocal: false, isDefinition: true))
 !1 = !DINamespace(name: "inlined", scope: !3, file: !2, line: 1, exportSymbols: true)
 !2 = !DIFile(filename: "namespace.cpp", directory: "/")
 !3 = !DINamespace(name: "normal", scope: null, file: !2, line: 1)
 !4 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 !5 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 4.0.0 (trunk 285825) (llvm/trunk 285822)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !6, globals: !7)
 !6 = !{}
 !7 = !{!0}
 !8 = !{i32 2, !"Dwarf Version", i32 5}
 !9 = !{i32 2, !"Debug Info Version", i32 3}
 !10 = !{i32 1, !"PIC Level", i32 2}
 !11 = !{!"clang version 4.0.0 (trunk 285825) (llvm/trunk 285822)"}

test/DebugInfo/X86/inlined-indirect-value.ll

 !1 = !DIFile(filename: "inline-break.c", directory: "/build/dir")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true, scopeLine: 7, isOptimized: true, unit: !0, variables: !2)
 !5 = !DISubroutineType(types: !6)
 !6 = !{!7}
 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !8 = distinct !DISubprogram(name: "f1", scope: !1, file: !1, line: 3, type: !5, isLocal: true, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !0, variables: !2)
 !9 = !{!10, !12}
-!10 = !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !11, isLocal: false, isDefinition: true)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !11, isLocal: false, isDefinition: true))
 !11 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
-!12 = !DIGlobalVariable(name: "y", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true)
+!12 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "y", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true))
 !13 = !{i32 2, !"Dwarf Version", i32 4}
 !14 = !{i32 2, !"Debug Info Version", i32 3}
 !16 = !DILocation(line: 4, column: 9, scope: !17, inlinedAt: !18)
 !17 = distinct !DILexicalBlock(scope: !8, file: !1, line: 4, column: 9)
 !18 = distinct !DILocation(line: 8, column: 9, scope: !4)
 !19 = !{!20, !20, i64 0}
 !20 = !{!"int", !21, i64 0}
 !21 = !{!"omnipotent char", !22, i64 0}

test/DebugInfo/X86/isel-cse-line.ll

 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 268246)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, globals: !6)
 !1 = !DIFile(filename: "/home/wpieb/test/D12094.cpp", directory: "/home/wpieb/build/llvm/trunk/llvm-RelWithDebInfo")
 !2 = !{}
 !3 = !{!4}
 !4 = !DIDerivedType(tag: DW_TAG_typedef, name: "fp_t", file: !1, line: 1, baseType: !5)
 !5 = !DIBasicType(name: "double", size: 64, align: 64, encoding: DW_ATE_float)
 !6 = !{!7, !10}
-!7 = distinct !DIGlobalVariable(name: "glb_start", scope: !0, file: !1, line: 4, type: !8, isLocal: false, isDefinition: true)
+!7 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "glb_start", scope: !0, file: !1, line: 4, type: !8, isLocal: false, isDefinition: true))
 !8 = !DIDerivedType(tag: DW_TAG_typedef, name: "int_t", file: !1, line: 2, baseType: !9)
 !9 = !DIBasicType(name: "long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)
-!10 = distinct !DIGlobalVariable(name: "glb_end", scope: !0, file: !1, line: 5, type: !8, isLocal: false, isDefinition: true)
+!10 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "glb_end", scope: !0, file: !1, line: 5, type: !8, isLocal: false, isDefinition: true))
 !11 = !{i32 2, !"Dwarf Version", i32 4}
 !12 = !{i32 2, !"Debug Info Version", i32 3}
 !13 = !{!"clang version 3.9.0 (trunk 268246)"}
 !14 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !15, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
 !15 = !DISubroutineType(types: !16)
 !16 = !{!17}
 !17 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !18 = !DILocalVariable(name: "start", scope: !14, file: !1, line: 9, type: !8)

test/DebugInfo/X86/linkage-name.ll

 !7 = !DISubroutineType(types: !8)
 !8 = !{!9, !10, !9}
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !11)
 !11 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 1, size: 8, align: 8, file: !28, elements: !12)
 !12 = !{!13}
 !13 = !DISubprogram(name: "a", linkageName: "_ZN1A1aEi", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrivate | DIFlagPrototyped, isOptimized: false, file: !6, scope: !11, type: !7)
 !18 = !{!20}
-!20 = !DIGlobalVariable(name: "a", line: 9, isLocal: false, isDefinition: true, scope: null, file: !6, type: !11)
+!20 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 9, isLocal: false, isDefinition: true, scope: null, file: !6, type: !11))
 !21 = !DILocalVariable(name: "this", line: 5, arg: 1, flags: DIFlagArtificial, scope: !5, file: !6, type: !22)
 !22 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !11)
 !23 = !DILocation(line: 5, column: 8, scope: !5)
 !24 = !DILocalVariable(name: "b", line: 5, arg: 2, scope: !5, file: !6, type: !9)
 !25 = !DILocation(line: 5, column: 14, scope: !5)
 !26 = !DILocation(line: 6, column: 4, scope: !27)
 !27 = distinct !DILexicalBlock(line: 5, column: 17, file: !6, scope: !5)
 !28 = !DIFile(filename: "foo.cpp", directory: "/Users/echristo")
 !29 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/live-debug-values.ll

 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
 !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
 !10 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !11 = !{!12, !13, !14}
 !12 = !DILocalVariable(name: "argc", arg: 1, scope: !4, file: !1, line: 6, type: !7)
 !13 = !DILocalVariable(name: "argv", arg: 2, scope: !4, file: !1, line: 6, type: !8)
 !14 = !DILocalVariable(name: "n", scope: !4, file: !1, line: 7, type: !7)
 !15 = !{!16}
-!16 = !DIGlobalVariable(name: "m", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true)
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "m", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true))
 !17 = !{i32 2, !"Dwarf Version", i32 4}
 !18 = !{i32 2, !"Debug Info Version", i32 3}
 !19 = !{!"clang version 3.8.0 (trunk 253049) "}
 !20 = !DIExpression()
 !21 = !DILocation(line: 6, column: 14, scope: !4)
 !22 = !DILocation(line: 6, column: 27, scope: !23)
 !23 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
 !24 = !DILocation(line: 8, column: 12, scope: !25)

test/DebugInfo/X86/memberfnptr.ll

 !3 = !{!4}
 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 8, align: 8, file: !1, elements: !5, identifier: "_ZTS1A")
 !5 = !{!6}
 !6 = !DISubprogram(name: "foo", linkageName: "_ZN1A3fooEv", line: 2, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !1, scope: !4, type: !7)
 !7 = !DISubroutineType(types: !8)
 !8 = !{null, !9}
 !9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)
 !10 = !{!11}
-!11 = !DIGlobalVariable(name: "p", line: 5, isLocal: false, isDefinition: true, scope: null, file: !12, type: !13)
+!11 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "p", line: 5, isLocal: false, isDefinition: true, scope: null, file: !12, type: !13))
 !12 = !DIFile(filename: "memberfnptr.cpp", directory: "")
 !13 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, size: 64, baseType: !7, extraData: !4)
 !14 = !{i32 2, !"Dwarf Version", i32 2}
 !15 = !{i32 2, !"Debug Info Version", i32 3}
 !16 = !{i32 1, !"PIC Level", i32 2}
 !17 = !{!"clang version 3.6.0 "}

test/DebugInfo/X86/misched-dbg-value.ll

 !22 = !{!23, !24, !25, !26, !27, !28}
 !23 = !DILocalVariable(name: "Array1Par", line: 181, arg: 1, scope: !12, file: !3, type: !15)
 !24 = !DILocalVariable(name: "Array2Par", line: 182, arg: 2, scope: !12, file: !3, type: !17)
 !25 = !DILocalVariable(name: "IntParI1", line: 183, arg: 3, scope: !12, file: !3, type: !21)
 !26 = !DILocalVariable(name: "IntParI2", line: 184, arg: 4, scope: !12, file: !3, type: !21)
 !27 = !DILocalVariable(name: "IntLoc", line: 186, scope: !12, file: !3, type: !21)
 !28 = !DILocalVariable(name: "IntIndex", line: 187, scope: !12, file: !3, type: !21)
 !29 = !{!30, !35, !36, !38, !39, !40, !42, !46, !63}
-!30 = !DIGlobalVariable(name: "Version", line: 111, isLocal: false, isDefinition: true, scope: null, file: !3, type: !31)
+!30 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "Version", line: 111, isLocal: false, isDefinition: true, scope: null, file: !3, type: !31))
 !31 = !DICompositeType(tag: DW_TAG_array_type, size: 32, align: 8, baseType: !32, elements: !33)
 !32 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !33 = !{!34}
 !34 = !DISubrange(count: 4)
-!35 = !DIGlobalVariable(name: "IntGlob", line: 171, isLocal: false, isDefinition: true, scope: null, file: !3, type: !16)
-!36 = !DIGlobalVariable(name: "BoolGlob", line: 172, isLocal: false, isDefinition: true, scope: null, file: !3, type: !37)
+!35 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "IntGlob", line: 171, isLocal: false, isDefinition: true, scope: null, file: !3, type: !16))
+!36 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "BoolGlob", line: 172, isLocal: false, isDefinition: true, scope: null, file: !3, type: !37))
 !37 = !DIDerivedType(tag: DW_TAG_typedef, name: "boolean", line: 149, file: !82, baseType: !16)
-!38 = !DIGlobalVariable(name: "Char1Glob", line: 173, isLocal: false, isDefinition: true, scope: null, file: !3, type: !32)
-!39 = !DIGlobalVariable(name: "Char2Glob", line: 174, isLocal: false, isDefinition: true, scope: null, file: !3, type: !32)
-!40 = !DIGlobalVariable(name: "Array1Glob", line: 175, isLocal: false, isDefinition: true, scope: null, file: !3, type: !41)
+!38 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "Char1Glob", line: 173, isLocal: false, isDefinition: true, scope: null, file: !3, type: !32))
+!39 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "Char2Glob", line: 174, isLocal: false, isDefinition: true, scope: null, file: !3, type: !32))
+!40 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "Array1Glob", line: 175, isLocal: false, isDefinition: true, scope: null, file: !3, type: !41))
 !41 = !DIDerivedType(tag: DW_TAG_typedef, name: "Array1Dim", line: 135, file: !82, baseType: !18)
-!42 = !DIGlobalVariable(name: "Array2Glob", line: 176, isLocal: false, isDefinition: true, scope: null, file: !3, type: !43)
+!42 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "Array2Glob", line: 176, isLocal: false, isDefinition: true, scope: null, file: !3, type: !43))
 !43 = !DIDerivedType(tag: DW_TAG_typedef, name: "Array2Dim", line: 136, file: !82, baseType: !44)
 !44 = !DICompositeType(tag: DW_TAG_array_type, size: 83232, align: 32, baseType: !16, elements: !45)
 !45 = !{!20, !20}
-!46 = !DIGlobalVariable(name: "PtrGlb", line: 177, isLocal: false, isDefinition: true, scope: null, file: !3, type: !47)
+!46 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "PtrGlb", line: 177, isLocal: false, isDefinition: true, scope: null, file: !3, type: !47))
 !47 = !DIDerivedType(tag: DW_TAG_typedef, name: "RecordPtr", line: 148, file: !82, baseType: !48)
 !48 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !49)
 !49 = !DIDerivedType(tag: DW_TAG_typedef, name: "RecordType", line: 147, file: !82, baseType: !50)
 !50 = !DICompositeType(tag: DW_TAG_structure_type, name: "Record", line: 138, size: 448, align: 64, file: !82, elements: !51)
 !51 = !{!52, !54, !56, !57, !58}
 !52 = !DIDerivedType(tag: DW_TAG_member, name: "PtrComp", line: 140, size: 64, align: 64, file: !82, scope: !50, baseType: !53)
 !53 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !50)
 !54 = !DIDerivedType(tag: DW_TAG_member, name: "Discr", line: 141, size: 32, align: 32, offset: 64, file: !82, scope: !50, baseType: !55)
 !55 = !DIDerivedType(tag: DW_TAG_typedef, name: "Enumeration", line: 128, file: !82, baseType: !2)
 !56 = !DIDerivedType(tag: DW_TAG_member, name: "EnumComp", line: 142, size: 32, align: 32, offset: 96, file: !82, scope: !50, baseType: !55)
 !57 = !DIDerivedType(tag: DW_TAG_member, name: "IntComp", line: 143, size: 32, align: 32, offset: 128, file: !82, scope: !50, baseType: !21)
 !58 = !DIDerivedType(tag: DW_TAG_member, name: "StringComp", line: 144, size: 248, align: 8, offset: 160, file: !82, scope: !50, baseType: !59)
 !59 = !DIDerivedType(tag: DW_TAG_typedef, name: "String30", line: 134, file: !82, baseType: !60)
 !60 = !DICompositeType(tag: DW_TAG_array_type, size: 248, align: 8, baseType: !32, elements: !61)
 !61 = !{!62}
 !62 = !DISubrange(count: 31)
-!63 = !DIGlobalVariable(name: "PtrGlbNext", line: 178, isLocal: false, isDefinition: true, scope: null, file: !3, type: !47)
+!63 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "PtrGlbNext", line: 178, isLocal: false, isDefinition: true, scope: null, file: !3, type: !47))
 !64 = !DILocation(line: 181, scope: !12)
 !65 = !DILocation(line: 182, scope: !12)
 !66 = !DILocation(line: 183, scope: !12)
 !67 = !DILocation(line: 184, scope: !12)
 !68 = !DILocation(line: 189, scope: !12)
 !69 = !DILocation(line: 190, scope: !12)
 !73 = !DILocation(line: 191, scope: !12)
 !74 = !DILocation(line: 192, scope: !12)

test/DebugInfo/X86/multiple-aranges.ll

 
 !llvm.dbg.cu = !{!0, !7}
 !llvm.module.flags = !{!12, !13}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "test1.c", directory: "/home/kayamon")
 !2 = !{}
 !3 = !{!4}
-!4 = !DIGlobalVariable(name: "kittens", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "kittens", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6))
 !5 = !DIFile(filename: "test1.c", directory: "/home/kayamon")
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: FullDebug, file: !8, enums: !2, retainedTypes: !2, globals: !9, imports: !2)
 !8 = !DIFile(filename: "test2.c", directory: "/home/kayamon")
 !9 = !{!10}
-!10 = !DIGlobalVariable(name: "rainbows", line: 1, isLocal: false, isDefinition: true, scope: null, file: !11, type: !6)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "rainbows", line: 1, isLocal: false, isDefinition: true, scope: null, file: !11, type: !6))
 !11 = !DIFile(filename: "test2.c", directory: "/home/kayamon")
 !12 = !{i32 2, !"Dwarf Version", i32 4}
 !13 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/multiple-at-const-val.ll

 !56 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !77 = !DIDerivedType(tag: DW_TAG_member, name: "badbit", line: 331, flags: DIFlagStaticMember, file: !1801, scope: !49, baseType: !78, extraData: i32 1)
 !78 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !79)
 !79 = !DIDerivedType(tag: DW_TAG_typedef, name: "ostate", line: 327, file: !1801, scope: !49, baseType: !26)
 !955 = !{}
 !960 = distinct !DISubprogram(name: "main", line: 73, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 73, file: !1802, scope: null, type: !54, variables: !955)
 !961 = !DIFile(filename: "student2.cpp", directory: "/privite/tmp")
 !1786 = !{!1800}
-!1800 = !DIGlobalVariable(name: "badbit", linkageName: "badbit", line: 331, isLocal: true, isDefinition: true, scope: !5, file: !5, type: !78, expr: !DIExpression(DW_OP_constu, 1, DW_OP_stack_value), declaration: !77)
+!1800 = !DIGlobalVariableExpression(var: !1804, expr: !DIExpression(DW_OP_constu, 1, DW_OP_stack_value))
 !1801 = !DIFile(filename: "os_base.h", directory: "/privite/tmp")
 !1802 = !DIFile(filename: "student2.cpp", directory: "/privite/tmp")
 !1803 = !{i32 1, !"Debug Info Version", i32 3}
+!1804 = distinct !DIGlobalVariable(name: "badbit", linkageName: "badbit", line: 331, isLocal: true, isDefinition: true, scope: !5, file: !5, type: !78, declaration: !77)

test/DebugInfo/X86/nondefault-subrange-array.ll

 ; CHECK-NEXT:                 DW_AT_encoding [DW_FORM_data1]  (DW_ATE_unsigned)
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!21}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: FullDebug, file: !20, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "t.cpp", directory: "/Volumes/Sandbox/llvm")
 !7 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 1, align: 32, file: !20, elements: !8)
 !8 = !{!9, !14}
 !9 = !DIDerivedType(tag: DW_TAG_member, name: "x", line: 1, flags: DIFlagPrivate, file: !20, scope: !7, baseType: !10)
 !10 = !DICompositeType(tag: DW_TAG_array_type, align: 32, baseType: !11, elements: !12)
 !11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !12 = !{!13}
 !13 = !DISubrange(count: 42, lowerBound: -3)
 !14 = !DISubprogram(name: "A", line: 1, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !6, scope: !7, type: !15)
 !15 = !DISubroutineType(types: !16)
 !16 = !{null, !17}
 !17 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !7)
 !20 = !DIFile(filename: "t.cpp", directory: "/Volumes/Sandbox/llvm")
 !21 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/objc-fwd-decl.ll

 @a = common global %0* null, align 8, !dbg !5
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9, !10, !11, !12, !14}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_ObjC, producer: "clang version 3.1 (trunk 152054 trunk 152094)", isOptimized: false, runtimeVersion: 2, emissionKind: FullDebug, file: !13, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "a", line: 3, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 3, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "foo.m", directory: "/Users/echristo")
 !7 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !8)
 !8 = !DICompositeType(tag: DW_TAG_structure_type, name: "FooBarBaz", line: 1, flags: DIFlagFwdDecl, runtimeLang: DW_LANG_ObjC, file: !13)
 !9 = !{i32 1, !"Objective-C Version", i32 2}
 !10 = !{i32 1, !"Objective-C Image Info Version", i32 0}
 !11 = !{i32 1, !"Objective-C Image Info Section", !"__DATA, __objc_imageinfo, regular, no_dead_strip"}
 !12 = !{i32 4, !"Objective-C Garbage Collection", i32 0}
 !13 = !DIFile(filename: "foo.m", directory: "/Users/echristo")
 !14 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/pointer-type-size.ll

 ; RUN: llc -mtriple=x86_64-apple-macosx10.7 %s -o %t -filetype=obj
 ; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
 
 ; CHECK: ptr
 ; CHECK-NOT: AT_bit_size
 
 %struct.crass = type { i8* }
 
 @crass = common global %struct.crass zeroinitializer, align 8, !dbg !5
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!14}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 147882)", isOptimized: false, emissionKind: FullDebug, file: !13, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "crass", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "crass", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "foo.c", directory: "/Users/echristo/tmp")
 !7 = !DICompositeType(tag: DW_TAG_structure_type, name: "crass", line: 1, size: 64, align: 64, file: !13, elements: !8)
 !8 = !{!9}
 !9 = !DIDerivedType(tag: DW_TAG_member, name: "ptr", line: 1, size: 64, align: 64, file: !13, scope: !7, baseType: !10)
 !10 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !11)
 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !12)
 !12 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !13 = !DIFile(filename: "foo.c", directory: "/Users/echristo/tmp")
 !14 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/pr12831.ll

 !117 = !DISubroutineType(types: !118)
 !118 = !{null, !119}
 !119 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !26)
 !120 = !{!121}
 !121 = !DITemplateTypeParameter(name: "_Tp", type: !26)
 !126 = distinct !DISubprogram(name: "function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:20:36> >", linkageName: "_ZN8functionIFvvEEC2IZN17BPLFunctionWriter9writeExprEvE3$_0EET_", line: 8, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 8, file: !6, scope: null, type: !23, templateParams: !47, declaration: !22, variables: !1)
 !127 = distinct !DISubprogram(name: "_M_not_empty_function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:20:36> >", linkageName: "_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_0EEvRKT_", line: 3, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !6, scope: null, type: !117, templateParams: !120, declaration: !116, variables: !1)
 !128 = !{!130}
-!130 = !DIGlobalVariable(name: "__stored_locally", linkageName: "__stored_locally", line: 2, isLocal: true, isDefinition: true, scope: !114, file: !6, type: !131, expr: !DIExpression(DW_OP_constu, 1, DW_OP_stack_value))
+!130 = !DIGlobalVariableExpression(var: !163, expr: !DIExpression(DW_OP_constu, 1, DW_OP_stack_value))
 !131 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !132)
 !132 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean)
 !133 = !DILocalVariable(name: "this", line: 19, arg: 1, flags: DIFlagArtificial, scope: !5, file: !6, type: !134)
 !134 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !10)
 !135 = !DILocation(line: 19, column: 39, scope: !5)
 !136 = !DILocation(line: 20, column: 17, scope: !137)
 !137 = distinct !DILexicalBlock(line: 19, column: 51, file: !6, scope: !5)
 !138 = !DILocation(line: 23, column: 17, scope: !137)

 !155 = distinct !DILexicalBlock(line: 8, column: 81, file: !6, scope: !126)
 !156 = !DILocation(line: 10, column: 13, scope: !155)
 !157 = !DILocation(line: 4, column: 5, scope: !158)
 !158 = distinct !DILexicalBlock(line: 3, column: 105, file: !6, scope: !127)
 !159 = !DIFile(filename: "BPLFunctionWriter.cpp", directory: "/home/peter/crashdelta")
 !160 = !DIFile(filename: "BPLFunctionWriter2.ii", directory: "/home/peter/crashdelta")
 !161 = !DIFile(filename: "BPLFunctionWriter.cpp", directory: "/home/peter/crashdelta")
 !162 = !{i32 1, !"Debug Info Version", i32 3}
+!163 = distinct !DIGlobalVariable(name: "__stored_locally", linkageName: "__stored_locally", line: 2, isLocal: true, isDefinition: true, scope: !114, file: !6, type: !131)

test/DebugInfo/X86/ref_addr_relocation.ll

 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (trunk 191799)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !6, imports: !2)
 !1 = !DIFile(filename: "tu1.cpp", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
 !2 = !{}
 !3 = !{!4}
 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, size: 8, align: 8, file: !5, elements: !2, identifier: "_ZTS3foo")
 !5 = !DIFile(filename: "./hdr.h", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
 !6 = !{!7}
-!7 = !DIGlobalVariable(name: "f", line: 2, isLocal: false, isDefinition: true, scope: null, file: !8, type: !4)
+!7 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "f", line: 2, isLocal: false, isDefinition: true, scope: null, file: !8, type: !4))
 !8 = !DIFile(filename: "tu1.cpp", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
 !9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (trunk 191799)", isOptimized: false, emissionKind: FullDebug, file: !10, enums: !2, retainedTypes: !3, globals: !11, imports: !2)
 !10 = !DIFile(filename: "tu2.cpp", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
 !11 = !{!12}
-!12 = !DIGlobalVariable(name: "g", line: 2, isLocal: false, isDefinition: true, scope: null, file: !13, type: !4)
+!12 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "g", line: 2, isLocal: false, isDefinition: true, scope: null, file: !13, type: !4))
 !13 = !DIFile(filename: "tu2.cpp", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
 !14 = !{i32 2, !"Dwarf Version", i32 2}
 !15 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/split-global.ll

+; RUN: llc -mtriple=x86_64-apple-darwin %s -o - -filetype=obj | \
+; RUN:     llvm-dwarfdump --debug-dump=info - | FileCheck %s
+;
+; Test emitting debug info for fragmented global values.
+; This is a handcrafted example of an SROAed global variable.
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.12.0"
+
+%struct.anon = type { i32, i32 }
+
+; CHECK: DW_TAG_variable
+; CHECK-NEXT: DW_AT_name {{.*}}"point"
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_location [DW_FORM_exprloc] (<0x16> 03 00 00 00 00 00 00 00 00 93 04 03 04 00 00 00 00 00 00 00 93 04 )
+;     [0x0000000000000000], piece 0x00000004, [0x0000000000000004], piece 0x00000004
+; CHECK-NOT: DW_TAG
+; CHECK: DW_TAG
+; CHECK: DW_TAG_variable
+; CHECK-NEXT: DW_AT_name {{.*}}"part_const"
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_location [DW_FORM_exprloc] (<0x10> 03 08 00 00 00 00 00 00 00 93 04 10 02 9f 93 04 )
+;     [0x0000000000000008], piece 0x00000004, constu 0x00000002, stack-value, piece 0x00000004
+; CHECK-NOT: DW_TAG
+; CHECK: DW_TAG_variable
+; CHECK-NEXT: DW_AT_name {{.*}}"full_const"
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_location [DW_FORM_exprloc] (<0xa> 10 01 9f 93 04 10 02 9f 93 04 )
+;     constu 0x00000001, stack-value, piece 0x00000004, constu 0x00000002, stack-value, piece 0x00000004
+; CHECK-NOT: DW_TAG
+@point.x = global i32 1, align 4, !dbg !12
+@point.y = global i32 2, align 4, !dbg !13
+
+@part_const.x = global i32 1, align 4, !dbg !15
+
+!llvm.dbg.cu = !{!1}
+!llvm.module.flags = !{!10, !11}
+
+!0 = distinct !DIGlobalVariable(name: "point", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true)
+!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, globals: !4)
+!2 = !DIFile(filename: "g.c", directory: "/")
+!3 = !{}
+!4 = !{!12, !13, !14, !15, !17, !18}
+!5 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !2, line: 1, size: 64, elements: !6)
+!6 = !{!7, !9}
+!7 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !5, file: !2, line: 1, baseType: !8, size: 32)
+!8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!9 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !5, file: !2, line: 1, baseType: !8, size: 32, offset: 32)
+!10 = !{i32 2, !"Dwarf Version", i32 4}
+!11 = !{i32 2, !"Debug Info Version", i32 3}
+!12 = !DIGlobalVariableExpression(var: !0,  expr: !DIExpression(DW_OP_LLVM_fragment,  0, 32))
+!13 = !DIGlobalVariableExpression(var: !0,  expr: !DIExpression(DW_OP_LLVM_fragment, 32, 32))
+!14 = !DIGlobalVariableExpression(var: !16, expr: !DIExpression(DW_OP_LLVM_fragment,  0, 32))
+!15 = !DIGlobalVariableExpression(var: !16, expr: !DIExpression(DW_OP_constu, 2,
+                                             DW_OP_stack_value, DW_OP_LLVM_fragment, 32, 32))
+!16 = distinct !DIGlobalVariable(name: "part_const", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true)
+!17 = !DIGlobalVariableExpression(var: !19, expr: !DIExpression(DW_OP_constu, 1,
+                                             DW_OP_stack_value, DW_OP_LLVM_fragment,  0, 32))
+!18 = !DIGlobalVariableExpression(var: !19, expr: !DIExpression(DW_OP_constu, 2,
+                                             DW_OP_stack_value, DW_OP_LLVM_fragment, 32, 32))
+!19 = distinct !DIGlobalVariable(name: "full_const", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true)

test/DebugInfo/X86/stack-value-dwarf4.ll

 ; CHECK-DWARF4-NEXT: .byte  16
 ; CHECK-DWARF4-NEXT: .byte  4
 ; CHECK-DWARF4-NEXT: .byte  159
 
 @g = global i32 0, !dbg !2
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang", file: !4, globals: !1, emissionKind: FullDebug)
 !1 = !{!2}
-!2 = distinct !DIGlobalVariable(name: "a", scope: null, isLocal: false, isDefinition: true, expr: !3, type: !5)
+!2 = !DIGlobalVariableExpression(var: !8, expr: !3)
 !3 = !DIExpression(DW_OP_constu, 4, DW_OP_constu, 4, DW_OP_stack_value)
 !4 = !DIFile(filename: "<stdin>", directory: "/")
 !5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 
 !6 = !{i32 2, !"Dwarf Version", i32 2}
 !7 = !{i32 2, !"Debug Info Version", i32 3}
+!8 = distinct !DIGlobalVariable(name: "a", scope: null, isLocal: false, isDefinition: true, type: !5)
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!6, !7}

test/DebugInfo/X86/static_member_array.ll

 
 @_ZN1A15fully_specifiedE = global i32 0, align 4, !dbg !0
 @_ZN1A4smemE = global [4 x i32] [i32 0, i32 1, i32 2, i32 3], align 16, !dbg !5
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!17, !18, !19}
 !llvm.ident = !{!20}
 
-!0 = distinct !DIGlobalVariable(name: "fully_specified", linkageName: "_ZN1A15fully_specifiedE", scope: !1, file: !2, line: 7, type: !7, isLocal: false, isDefinition: true, declaration: !13)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "fully_specified", linkageName: "_ZN1A15fully_specifiedE", scope: !1, file: !2, line: 7, type: !7, isLocal: false, isDefinition: true, declaration: !13))
 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 4.0.0 (trunk 286129) (llvm/trunk 286128)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "static_member_array.cpp", directory: "/Volumes/Data/radar/28706946")
 !3 = !{}
 !4 = !{!0, !5}
-!5 = distinct !DIGlobalVariable(name: "smem", linkageName: "_ZN1A4smemE", scope: !1, file: !2, line: 8, type: !6, isLocal: false, isDefinition: true, declaration: !10)
+!5 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "smem", linkageName: "_ZN1A4smemE", scope: !1, file: !2, line: 8, type: !6, isLocal: false, isDefinition: true, declaration: !10))
 !6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 128, elements: !8)
 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 !8 = !{!9}
 !9 = !DISubrange(count: 4)
 !10 = !DIDerivedType(tag: DW_TAG_member, name: "smem", scope: !11, file: !2, line: 4, baseType: !14, flags: DIFlagStaticMember)
 !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !2, line: 1, size: 8, elements: !12, identifier: "_ZTS1A")
 !12 = !{!13, !10}
 !13 = !DIDerivedType(tag: DW_TAG_member, name: "fully_specified", scope: !11, file: !2, line: 3, baseType: !7, flags: DIFlagStaticMember)
 !14 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, elements: !15)
 !15 = !{!16}
 !16 = !DISubrange(count: -1)
 !17 = !{i32 2, !"Dwarf Version", i32 4}
 !18 = !{i32 2, !"Debug Info Version", i32 3}
 !19 = !{i32 1, !"PIC Level", i32 2}
 !20 = !{!"clang version 4.0.0 (trunk 286129) (llvm/trunk 286128)"}

test/DebugInfo/X86/stringpool.ll

 ; RUN: llc -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s --check-prefix=LINUX
 ; RUN: llc -mtriple=x86_64-darwin < %s | FileCheck %s --check-prefix=DARWIN
 
 @yyyy = common global i32 0, align 4, !dbg !5
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 143009)", isOptimized: true, emissionKind: FullDebug, file: !8, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "yyyy", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "yyyy", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "z.c", directory: "/home/nicholas")
 !7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !8 = !DIFile(filename: "z.c", directory: "/home/nicholas")
 
 ; Verify that "yyyy" ended up in the stringpool.
 ; LINUX: .section .debug_str,"MS",@progbits,1
 ; LINUX: yyyy
 ; DARWIN: .section __DWARF,__debug_str,regular,debug

test/DebugInfo/X86/struct-loc.ll

 @f = common global %struct.foo zeroinitializer, align 4, !dbg !5
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!12}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 152837) (llvm/trunk 152845)", isOptimized: false, emissionKind: FullDebug, file: !11, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "f", line: 5, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "f", line: 5, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "struct_bug.c", directory: "/Users/echristo/tmp")
 !7 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, size: 32, align: 32, file: !11, elements: !8)
 !8 = !{!9}
 !9 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !11, scope: !7, baseType: !10)
 !10 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !11 = !DIFile(filename: "struct_bug.c", directory: "/Users/echristo/tmp")
 !12 = !{i32 1, !"Debug Info Version", i32 3}

test/DebugInfo/X86/template.ll

 !23 = !DIBasicType(tag: DW_TAG_unspecified_type, name: "decltype(nullptr)")
 !24 = !DITemplateValueParameter(tag: DW_TAG_GNU_template_parameter_pack, name: "z", type: null, value: !25)
 !25 = !{!26, !27}
 !26 = !DITemplateValueParameter(tag: DW_TAG_template_value_parameter, type: !7, value: i32 1)
 !27 = !DITemplateValueParameter(tag: DW_TAG_template_value_parameter, type: !7, value: i32 2)
 !28 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_template.cpp", isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !0, file: !1, scope: !11, type: !29, variables: !2)
 !29 = !DISubroutineType(types: !2)
 !30 = !{!31, !32}
-!31 = !DIGlobalVariable(name: "glbl", line: 3, isLocal: false, isDefinition: true, scope: null, file: !11, type: !7)
-!32 = !DIGlobalVariable(name: "n", line: 4, isLocal: false, isDefinition: true, scope: null, file: !11, type: !8)
+!31 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "glbl", line: 3, isLocal: false, isDefinition: true, scope: null, file: !11, type: !7))
+!32 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "n", line: 4, isLocal: false, isDefinition: true, scope: null, file: !11, type: !8))
 !33 = !{i32 2, !"Dwarf Version", i32 4}
 !34 = !{i32 2, !"Debug Info Version", i32 3}
 !35 = !{!"clang version 3.6.0 (trunk 224394) (llvm/trunk 224384)"}
 !36 = !DILocation(line: 3, column: 12, scope: !10)
 !37 = !DILocation(line: 1, column: 96, scope: !14)
 !38 = !DILocation(line: 0, scope: !28)

test/DebugInfo/X86/tls.ll

 !5 = !DIFile(filename: "tls.cpp", directory: "/tmp/dbginfo")
 !6 = !DISubroutineType(types: !7)
 !7 = !{!8}
 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{!10}
 !10 = !DITemplateValueParameter(tag: DW_TAG_template_value_parameter, name: "I", type: !11, value: i32* @glbl)
 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !8)
 !12 = !{!13, !14}
-!13 = !DIGlobalVariable(name: "tls", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8)
-!14 = !DIGlobalVariable(name: "glbl", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8)
+!13 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "tls", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8))
+!14 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "glbl", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8))
 !15 = !{i32 2, !"Dwarf Version", i32 4}
 !16 = !{i32 1, !"Debug Info Version", i32 3}
 !17 = !{!"clang version 3.5 "}
 !18 = !DILocation(line: 6, scope: !4)

test/DebugInfo/X86/type_units_with_addresses.ll

 !20 = !{!21, !22}
 !21 = !DIDerivedType(tag: DW_TAG_member, name: "s4_1", line: 35, size: 8, align: 8, file: !1, scope: !19, baseType: !23)
 !22 = !DIDerivedType(tag: DW_TAG_member, name: "s4_2", line: 36, size: 8, align: 8, offset: 8, file: !1, scope: !19, baseType: !24)
 !23 = !DICompositeType(tag: DW_TAG_structure_type, name: "S4_1", line: 29, size: 8, align: 8, file: !1, elements: !2, identifier: "_ZTS4S4_1")
 !24 = !DICompositeType(tag: DW_TAG_structure_type, name: "S4_2<&i>", line: 32, size: 8, align: 8, file: !1, elements: !2, templateParams: !25, identifier: "_ZTS4S4_2IXadL_Z1iEEE")
 !25 = !{!26}
 !26 = !DITemplateValueParameter(tag: DW_TAG_template_value_parameter, name: "T", type: !7, value: i32* @i)
 !27 = !{!28, !30, !31, !32, !33}
-!28 = !DIGlobalVariable(name: "i", line: 1, isLocal: false, isDefinition: true, scope: null, file: !29, type: !8)
+!28 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", line: 1, isLocal: false, isDefinition: true, scope: null, file: !29, type: !8))
 !29 = !DIFile(filename: "tu.cpp", directory: "/tmp/dbginfo")
-!30 = !DIGlobalVariable(name: "a", line: 6, isLocal: false, isDefinition: true, scope: null, file: !29, type: !4)
-!31 = !DIGlobalVariable(name: "s2", line: 15, isLocal: false, isDefinition: true, scope: null, file: !29, type: !9)
-!32 = !DIGlobalVariable(name: "s3", line: 27, isLocal: false, isDefinition: true, scope: null, file: !29, type: !13)
-!33 = !DIGlobalVariable(name: "s4", line: 39, isLocal: false, isDefinition: true, scope: null, file: !29, type: !19)
+!30 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 6, isLocal: false, isDefinition: true, scope: null, file: !29, type: !4))
+!31 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s2", line: 15, isLocal: false, isDefinition: true, scope: null, file: !29, type: !9))
+!32 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s3", line: 27, isLocal: false, isDefinition: true, scope: null, file: !29, type: !13))
+!33 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "s4", line: 39, isLocal: false, isDefinition: true, scope: null, file: !29, type: !19))
 !34 = !{i32 2, !"Dwarf Version", i32 4}
 !35 = !{i32 1, !"Debug Info Version", i32 3}
 !36 = !{!"clang version 3.5.0 "}

test/DebugInfo/X86/unattached-global.ll

-; RUN: llc -o - %s | FileCheck %s
+; RUN: %llc_dwarf -filetype=obj -o - %s | llvm-dwarfdump - | FileCheck %s
 
 target datalayout = "e-p:64:64"
 target triple = "x86_64-unknown-linux-gnu"
 
-; CHECK: .byte    0                       # DW_AT_location
+; CHECK: DW_TAG_variable
+; CHECK: DW_AT_name {{.*}}"a"
+; CHECK-NOT: DW_AT_location
+; CHECK: DW_TAG
 
-!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang", file: !4, globals: !1, emissionKind: FullDebug)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang", file: !5, globals: !1, emissionKind: FullDebug)
 !1 = !{!2}
-!2 = distinct !DIGlobalVariable(name: "a", scope: null, isLocal: false, isDefinition: true, expr: !3, type: !5)
-!3 = !DIExpression(DW_OP_plus, 4)
-!4 = !DIFile(filename: "<stdin>", directory: "/")
-!5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!2 = !DIGlobalVariableExpression(var: !3, expr: !4)
+!3 = distinct !DIGlobalVariable(name: "a", scope: null, isLocal: false, isDefinition: true, type: !6)
+!4 = !DIExpression(DW_OP_plus, 4)
+!5 = !DIFile(filename: "<stdin>", directory: "/")
+!6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 
-!6 = !{i32 2, !"Dwarf Version", i32 2}
-!7 = !{i32 2, !"Debug Info Version", i32 3}
+!7 = !{i32 2, !"Dwarf Version", i32 2}
+!8 = !{i32 2, !"Debug Info Version", i32 3}
 
 !llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!6, !7}
+!llvm.module.flags = !{!7, !8}

test/DebugInfo/X86/union-template.ll

 !1 = !DIFile(filename: "foo.cc", directory: "/usr/local/google/home/echristo/tmp")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "g", linkageName: "_ZN7PR156371gEf", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !6, variables: !2)
 !5 = !DINamespace(name: "PR15637", line: 1, file: !1, scope: null)
 !6 = !DISubroutineType(types: !7)
 !7 = !{null, !8}
 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
 !9 = !{!10}
-!10 = !DIGlobalVariable(name: "f", linkageName: "_ZN7PR156371fE", line: 6, isLocal: false, isDefinition: true, scope: !5, file: !11, type: !12)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "f", linkageName: "_ZN7PR156371fE", line: 6, isLocal: false, isDefinition: true, scope: !5, file: !11, type: !12))
 !11 = !DIFile(filename: "foo.cc", directory: "/usr/local/google/home/echristo/tmp")
 !12 = !DICompositeType(tag: DW_TAG_union_type, name: "Value<float>", line: 2, size: 32, align: 32, file: !1, scope: !5, elements: !13, templateParams: !21)
 !13 = !{!14, !16}
 !14 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !12, baseType: !15)
 !15 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !16 = !DISubprogram(name: "Value", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !1, scope: !12, type: !17)
 !17 = !DISubroutineType(types: !18)
 !18 = !{null, !19}

test/DebugInfo/X86/vector.ll

 @a = common global <4 x i32> zeroinitializer, align 16, !dbg !5
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!13}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 171825) (llvm/trunk 171822)", isOptimized: false, emissionKind: FullDebug, file: !12, enums: !1, retainedTypes: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
-!5 = !DIGlobalVariable(name: "a", line: 3, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 3, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7))
 !6 = !DIFile(filename: "foo.c", directory: "/Users/echristo")
 !7 = !DIDerivedType(tag: DW_TAG_typedef, name: "v4si", line: 1, file: !12, baseType: !8)
 !8 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 128, flags: DIFlagVector, baseType: !9, elements: !10)
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !{!11}
 !11 = !DISubrange(count: 4)
 !12 = !DIFile(filename: "foo.c", directory: "/Users/echristo")
 
 ; Check that we get an array type with a vector attribute.
 ; CHECK: DW_TAG_array_type
 ; CHECK-NEXT: DW_AT_GNU_vector
 !13 = !{i32 1, !"Debug Info Version", i32 3}

test/Instrumentation/AddressSanitizer/debug-info-global-var.ll

 ; RUN: opt < %s -asan -asan-module -S | FileCheck %s
 source_filename = "version.c"
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.12.0"
 
 ; CHECK: @version = constant { [5 x i8], [59 x i8] } {{.*}}, !dbg ![[GV:.*]]
 @version = constant [5 x i8] c"4.00\00", align 1, !dbg !0
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!10, !11, !12}
 !llvm.ident = !{!13}
 
-; CHECK: ![[GV]] = distinct !DIGlobalVariable(name: "version"
-; CHECK-NOT: expr:
-!0 = distinct !DIGlobalVariable(name: "version", scope: !1, file: !2, line: 2, type: !5, isLocal: false, isDefinition: true)
+; Should not have an expression:
+; CHECK: ![[GV]] = !DIGlobalVariableExpression(var: ![[GVAR:.*]])
+; CHECK: ![[GVAR]] = !DIGlobalVariable(name: "version"
+!0 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "version", scope: !1, file: !2, line: 2, type: !5, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 4.0.0 (trunk 281923) (llvm/trunk 281916)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "version.c", directory: "/Volumes/Fusion/Data/radar/24899262")
 !3 = !{}
 !4 = !{!0}
 !5 = !DICompositeType(tag: DW_TAG_array_type, baseType: !6, size: 40, align: 8, elements: !8)
 !6 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !7)
 !7 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
 !8 = !{!9}
 !9 = !DISubrange(count: 5)
 !10 = !{i32 2, !"Dwarf Version", i32 4}
 !11 = !{i32 2, !"Debug Info Version", i32 3}
 !12 = !{i32 1, !"PIC Level", i32 2}
 !13 = !{!"clang version 4.0.0 (trunk 281923) (llvm/trunk 281916)"}

test/LTO/X86/Inputs/type-mapping-src.ll

 target triple = "x86_64-pc-windows-msvc18.0.0"
 
 %SrcType = type { i8 }
 @x = external global %SrcType
 
 %CommonStruct = type opaque
 @bar = internal global %CommonStruct* null, !dbg !0
 
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!12}
-!0 = distinct !DIGlobalVariable(name: "bar", linkageName: "bar", scope: !1, file: !2, line: 2, type: !5, isLocal: false, isDefinition: true)
+!0 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "bar", linkageName: "bar", scope: !1, file: !2, line: 2, type: !5, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "b", directory: "/")
 !3 = !{}
 !4 = !{!0}
 !5 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64)
 !6 = !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !2, line: 1, flags: DIFlagFwdDecl, identifier: ".?AUS@@")
 !12 = !{i32 2, !"Debug Info Version", i32 3}
 

test/LTO/X86/type-mapping-bug.ll

 @use = global %Tricky* zeroinitializer
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!19}
 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "a", directory: "/")
 !3 = !{}
 !4 = !{!5}
-!5 = distinct !DIGlobalVariable(name: "foo", linkageName: "foo", scope: !1, file: !2, line: 5, type: !6, isLocal: false, isDefinition: true)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "foo", linkageName: "foo", scope: !1, file: !2, line: 5, type: !6, isLocal: false, isDefinition: true))
 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !2, line: 5, size: 8, elements: !7, identifier: ".?AUS@@")
 !7 = !{!8}
 !8 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !9)
 !9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Template<&x>", file: !2, line: 3, size: 8, elements: !3, templateParams: !10, identifier: ".?AU?$Template@$1?x@@3UX@@A@@")
 !10 = !{!11}
 
 !11 = !DITemplateValueParameter(type: !12, value: %Tricky.1* bitcast (i8* @templateValueParam to %Tricky.1*))
 
 !12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)
 !13 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "X", file: !2, line: 1, size: 8, elements: !3, identifier: ".?AUX@@")
 !19 = !{i32 2, !"Debug Info Version", i32 3}

test/Linker/2011-08-04-Metadata.ll

 ; RUN: llvm-link %s %p/2011-08-04-Metadata2.ll -o %t.bc
 ; RUN: llvm-dis < %t.bc | FileCheck %s
 ; Test if internal global variable's debug info is merged appropriately or not.
 
 ; CHECK: @x = internal global i32 0, align 4, !dbg [[DI1:![0-9]+]]
 ; CHECK: @x.1 = internal global i32 0, align 4, !dbg [[DI2:![0-9]+]]
 
-; CHECK: [[DI1]] = !DIGlobalVariable(name: "x",
-; CHECK-NOT:               linkageName:
-; CHECK: [[DI2]] = !DIGlobalVariable(name: "x",
-; CHECK-NOT:               linkageName:
+; CHECK: [[DI1]] = !DIGlobalVariableExpression(var: [[V1:.*]])
+; CHECK: [[V1]] = !DIGlobalVariable(name: "x",
+; CHECK-NOT:                        linkageName:
+; CHECK: [[DI2]] = !DIGlobalVariableExpression(var: [[V2:.*]])
+; CHECK: [[V2]] = !DIGlobalVariable(name: "x",
+; CHECK-NOT:                        linkageName:
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 target triple = "x86_64-apple-macosx10.7.0"
 
 @x = internal global i32 0, align 4, !dbg !5
 
 define void @foo() nounwind uwtable ssp !dbg !1 {
 entry:
   store i32 1, i32* @x, align 4, !dbg !7
   ret void, !dbg !7
 }
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!11}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 ()", isOptimized: true, emissionKind: FullDebug, file: !9, enums: !{}, retainedTypes: !{}, globals: !{!5})
 !1 = distinct !DISubprogram(name: "foo", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !0, file: !9, scope: !2, type: !3)
 !2 = !DIFile(filename: "/tmp/one.c", directory: "/Volumes/Lalgate/Slate/D")
 !3 = !DISubroutineType(types: !4)
 !4 = !{null}
-!5 = !DIGlobalVariable(name: "x", line: 2, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !6)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", line: 2, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !6))
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = !DILocation(line: 3, column: 14, scope: !8)
 !8 = distinct !DILexicalBlock(line: 3, column: 12, file: !9, scope: !1)
 !9 = !DIFile(filename: "/tmp/one.c", directory: "/Volumes/Lalgate/Slate/D")
 !11 = !{i32 1, !"Debug Info Version", i32 3}

test/Linker/2011-08-04-Metadata2.ll

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!11}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 ()", isOptimized: true, emissionKind: FullDebug, file: !9, enums: !{}, retainedTypes: !{}, globals: !{!5})
 !1 = distinct !DISubprogram(name: "bar", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !0, file: !9, scope: !2, type: !3)
 !2 = !DIFile(filename: "/tmp/two.c", directory: "/Volumes/Lalgate/Slate/D")
 !3 = !DISubroutineType(types: !4)
 !4 = !{null}
-!5 = !DIGlobalVariable(name: "x", line: 1, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !6)
+!5 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", line: 1, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !6))
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = !DILocation(line: 2, column: 14, scope: !8)
 !8 = distinct !DILexicalBlock(line: 2, column: 12, file: !9, scope: !1)
 !9 = !DIFile(filename: "/tmp/two.c", directory: "/Volumes/Lalgate/Slate/D")
 !11 = !{i32 1, !"Debug Info Version", i32 3}

test/Linker/debug-info-global-var.ll

 ; RUN: llvm-link -S %s %S/debug-info-version-a.ll | FileCheck %s
 source_filename = "debug-info-global-var.c"
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.12.0"
 
 ; CHECK: @g = global i32 0, align 4, !dbg ![[G:[0-9]+]]{{$}}
 @g = global i32 0, align 4, !dbg !0
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!6, !7, !8}
 !llvm.ident = !{!9}
 
-; CHECK: ![[G]] = distinct !DIGlobalVariable(name: "g"
-!0 = distinct !DIGlobalVariable(name: "g", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true)
+; CHECK: ![[G]] = !DIGlobalVariableExpression(var: ![[GVAR:.*]])
+; CHECK: ![[GVAR]] = distinct !DIGlobalVariable(name: "g"
+!0 = !DIGlobalVariableExpression(var: !10)
 !1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "debug-info-global-var.c", directory: "/")
 !3 = !{}
 !4 = !{!0}
 !5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 !6 = !{i32 2, !"Dwarf Version", i32 4}
 !7 = !{i32 2, !"Debug Info Version", i32 3}
 !8 = !{i32 1, !"PIC Level", i32 2}
 !9 = !{!"clang version 4.0.0 (trunk 286129) (llvm/trunk 286128)"}
+!10 = distinct !DIGlobalVariable(name: "g", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true)

test/Linker/odr.ll

 ; Use llvm-as to verify each module
 ; RUN: llvm-as %s -o %t1.bc
 ; RUN: llvm-as %p/Inputs/odr.ll -o %t2.bc
 ; Check that we can link it
 ; RUN: llvm-link %t1.bc %t2.bc -o %t
 @bar = global i64 0, align 8, !dbg !6
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!7}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, retainedTypes: !2, globals: !5)
 !1 = !DIFile(filename: "a", directory: "")
 !2 = !{!3}
 !3 = distinct !DICompositeType(tag: DW_TAG_class_type, scope: !4, file: !1, identifier: "zed")
 !4 = distinct !DISubprogram(name: "b", scope: null, isLocal: false, isDefinition: true, isOptimized: false, unit: !0)
 !5 = !{!6}
-!6 = distinct !DIGlobalVariable(name: "c", scope: null, isLocal: false, isDefinition: true)
+!6 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c", scope: null, isLocal: false, isDefinition: true))
 !7 = !{i32 2, !"Debug Info Version", i32 3}

test/Linker/only-needed-debug-metadata.ll

 !6 = !{!7, !7}
 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !8 = !{!9}
 !9 = !DILocalVariable(name: "x", arg: 1, scope: !4, file: !1, line: 4, type: !7)
 !10 = distinct !DISubprogram(name: "unused", scope: !1, file: !1, line: 8, type: !11, isLocal: false, isDefinition: true, scopeLine: 8, isOptimized: true, unit: !0, variables: !2)
 !11 = !DISubroutineType(types: !12)
 !12 = !{!7}
 !13 = !{!14, !15}
-!14 = !DIGlobalVariable(name: "X", scope: !0, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true)
-!15 = !DIGlobalVariable(name: "U", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true)
+!14 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "X", scope: !0, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true))
+!15 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "U", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true))
 !16 = !{i32 2, !"Dwarf Version", i32 4}
 !17 = !{i32 2, !"Debug Info Version", i32 3}
 !18 = !{!"clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)"}
 !19 = !DIExpression()
 !20 = !DILocation(line: 4, column: 13, scope: !4)
 !21 = !DILocation(line: 9, column: 3, scope: !10)

test/ThinLTO/X86/Inputs/crash_debuginfo.ll

 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!6}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "Apple LLVM version 8.0.0 (clang-800.0.25.1)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "2.cpp", directory: "some_dir")
 !2 = !{}
 !3 = !{!4}
-!4 = distinct !DIGlobalVariable(name: "a_global", linkageName: "a_global", scope: null, line: 52, type: !5, isLocal: true, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a_global", linkageName: "a_global", scope: null, line: 52, type: !5, isLocal: true, isDefinition: true))
 !5 = !DISubroutineType(types: !2)
 !6 = !{i32 2, !"Debug Info Version", i32 3}
 !7 = distinct !DILocation(line: 728, column: 71, scope: !8, inlinedAt: !14)
 !8 = distinct !DISubprogram(name: "baz", linkageName: "baz", scope: !9, file: !1, line: 726, type: !5, isLocal: false, isDefinition: true, scopeLine: 727, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !10, variables: !11)
 !9 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "some_other_class", scope: !1, file: !1, line: 197, size: 192, align: 64, elements: !2, templateParams: !2, identifier: "some_other_class")
 !10 = !DISubprogram(name: "baz", linkageName: "baz", scope: !9, file: !1, line: 726, type: !5, isLocal: false, isDefinition: false, scopeLine: 726, flags: DIFlagPrototyped, isOptimized: true)
 !11 = !{!12}
 !12 = !DILocalVariable(name: "caster", scope: !8, file: !1, line: 728, type: !13)
 !13 = distinct !DICompositeType(tag: DW_TAG_union_type, scope: !8, file: !1, line: 728, size: 64, align: 64, elements: !2, identifier: "someclass")
 !14 = distinct !DILocation(line: 795, column: 16, scope: !15)
 !15 = distinct !DILexicalBlock(scope: !16, file: !1, line: 794, column: 7)
 !16 = distinct !DISubprogram(name: "operator()", linkageName: "some_special_function", scope: null, file: !1, line: 783, type: !5, isLocal: true, isDefinition: true, scopeLine: 784, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !17, variables: !2)
 !17 = !DISubprogram(name: "operator()", linkageName: "some_special_function", scope: null, file: !1, line: 783, type: !5, isLocal: false, isDefinition: false, scopeLine: 783, flags: DIFlagPrototyped, isOptimized: true)

test/ThinLTO/X86/crash_debuginfo.ll

 declare void @bar(i32)
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!6}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "Apple LLVM version 8.0.0 (clang-800.0.24.1)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !2)
 !1 = !DIFile(filename: "1.cpp", directory: "/another_dir")
 !2 = !{!3}
-!3 = distinct !DIGlobalVariable(name: "_", linkageName: "some_global", scope: null, file: !1, line: 20, type: !4, isLocal: true, isDefinition: true)
+!3 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_", linkageName: "some_global", scope: null, file: !1, line: 20, type: !4, isLocal: true, isDefinition: true))
 !4 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "slice_nil", file: !1, line: 13, size: 64, align: 64, elements: !5, identifier: "_ZTSN5boost6python3api9slice_nilE")
 !5 = !{}
 !6 = !{i32 2, !"Debug Info Version", i32 3}
 !7 = distinct !DILocation(line: 728, column: 71, scope: !8, inlinedAt: !15)
 !8 = distinct !DISubprogram(name: "baz", linkageName: "baz", scope: !9, file: !1, line: 726, type: !10, isLocal: false, isDefinition: true, scopeLine: 727, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !11, variables: !12)
 !9 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "some_other_class", file: !1, line: 197, size: 192, align: 64, elements: !5, templateParams: !5, identifier: "some_other_class")
 !10 = !DISubroutineType(types: !5)
 !11 = !DISubprogram(name: "baz", linkageName: "baz", scope: !9, file: !1, line: 726, type: !10, isLocal: false, isDefinition: false, scopeLine: 726, flags: DIFlagPrototyped, isOptimized: true)
 !12 = !{!13}
 !13 = !DILocalVariable(name: "caster", scope: !8, file: !1, line: 728, type: !14)
 !14 = distinct !DICompositeType(tag: DW_TAG_union_type, scope: !8, file: !1, line: 728, size: 64, align: 64, elements: !5, identifier: "someclass")
 !15 = distinct !DILocation(line: 87, column: 9, scope: !16)
 !16 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: !9, line: 73, type: !10, isLocal: false, isDefinition: true, scopeLine: 74, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !17, variables: !5)
 !17 = !DISubprogram(name: "foo", linkageName: "foo", scope: !9, file: !1, line: 83, type: !10, isLocal: false, isDefinition: false, scopeLine: 83, flags: DIFlagPrototyped, isOptimized: true)

test/ThinLTO/X86/debuginfo-cu-import.ll

 !30 = !{}
 !31 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !32, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, unit: !0, variables: !30)
 !32 = !DISubroutineType(types: !33)
 !33 = !{null}
 !34 = !DILocation(line: 3, column: 1, scope: !31)
 !35 = !{!36}
 !36 = !DICompositeType(tag: DW_TAG_structure_type, name: "Base", line: 1, size: 32, align: 32, file: !1, elements: !30, identifier: "_ZTS4Base")
 !37 = !{!38}
-!38 = !DIGlobalVariable(name: "version", scope: !5, file: !1, line: 2, type: !36, isLocal: false, isDefinition: true)
+!38 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "version", scope: !5, file: !1, line: 2, type: !36, isLocal: false, isDefinition: true))

test/Transforms/GCOVProfiling/return-block.ll

 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 (trunk 223182)", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !8, imports: !2)
 !1 = !DIFile(filename: ".../llvm/test/Transforms/GCOVProfiling/return-block.ll", directory: "")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "test", line: 5, isLocal: false, isDefinition: true, isOptimized: true, unit: !0, scopeLine: 5, file: !1, scope: !5, type: !6, variables: !2)
 !5 = !DIFile(filename: ".../llvm/test/Transforms/GCOVProfiling/return-block.ll", directory: "")
 !6 = !DISubroutineType(types: !7)
 !7 = !{null}
 !8 = !{!9}
-!9 = !DIGlobalVariable(name: "A", line: 3, isLocal: false, isDefinition: true, scope: null, file: !5, type: !10)
+!9 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "A", line: 3, isLocal: false, isDefinition: true, scope: null, file: !5, type: !10))
 !10 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !11 = !{i32 2, !"Dwarf Version", i32 4}
 !12 = !{i32 2, !"Debug Info Version", i32 3}
 !13 = !{!"clang version 3.6.0 (trunk 223182)"}
 !14 = !DILocation(line: 6, column: 3, scope: !4)
 !15 = !DILocation(line: 7, column: 7, scope: !4)
 !16 = !DILocation(line: 8, column: 5, scope: !17)
 !17 = distinct !DILexicalBlock(line: 7, column: 7, file: !1, scope: !4)

test/Transforms/GlobalMerge/debug-info.ll

 ; RUN: opt -global-merge -global-merge-max-offset=100 -S -o - %s | FileCheck %s
 
 target datalayout = "e-p:64:64"
 target triple = "x86_64-unknown-linux-gnu"
 
 ; CHECK: @_MergedGlobals = private global { i32, i32 } { i32 1, i32 2 }, !dbg [[A:![0-9]+]], !dbg [[B:![0-9]+]]
 
 @a = internal global i32 1, !dbg !0
 @b = internal global i32 2, !dbg !1
 
 define void @use1() {
   %x = load i32, i32* @a
   %y = load i32, i32* @b
   ret void
 }
 
-; CHECK: [[A]] = distinct !DIGlobalVariable(name: "a", scope: null, isLocal: false, isDefinition: true)
-; CHECK: [[B]] = distinct !DIGlobalVariable(name: "b", scope: null, isLocal: false, isDefinition: true, expr: [[EXPR:![0-9]+]])
+; CHECK: [[A]] = !DIGlobalVariableExpression(var: [[AVAR:![0-9]+]])
+; CHECK: [[AVAR]] = !DIGlobalVariable(name: "a", scope: null, isLocal: false, isDefinition: true)
+; CHECK: [[B]] = !DIGlobalVariableExpression(var: [[BVAR:![0-9]+]], expr: [[EXPR:![0-9]+]])
+; CHECK: [[BVAR]] = !DIGlobalVariable(name: "b", scope: null, isLocal: false, isDefinition: true)
 ; CHECK: [[EXPR]] = !DIExpression(DW_OP_plus, 4)
 
 !llvm.module.flags = !{!2, !3}
-!0 = distinct !DIGlobalVariable(name: "a")
-!1 = distinct !DIGlobalVariable(name: "b")
+!0 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a"))
+!1 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b"))
 !2 = !{i32 2, !"Debug Info Version", i32 3}
 !3 = !{i32 2, !"Dwarf Version", i32 4}

test/Transforms/GlobalOpt/2009-03-05-dbg.ll

 
 return:                                           ; preds = %bb2
   ret i32 %.0, !dbg !19
 }
 
 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
 
 !llvm.dbg.cu = !{!1}
-!0 = !DIGlobalVariable(name: "Stop", line: 2, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !2)
+!0 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "Stop", line: 2, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !2))
 !1 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: FullDebug, file: !20, enums: !21, retainedTypes: !21, globals: !{!0})
 !2 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !3 = !DILocalVariable(name: "i", line: 4, arg: 1, scope: !4, file: !1, type: !2)
 !4 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !1, scope: !1, type: !5)
 !5 = !DISubroutineType(types: !6)
 !6 = !{!2, !2}
 !7 = !DILocation(line: 5, scope: !8)
 !8 = distinct !DILexicalBlock(line: 0, column: 0, file: !20, scope: !4)

test/Transforms/Inline/alloca-dbgdeclare.ll

 !18 = !{null, !4}
 !19 = !{!20}
 !20 = !DILocalVariable(name: "p1", line: 6, arg: 1, scope: !15, file: !16, type: !4)
 !21 = distinct !DISubprogram(name: "fn4", linkageName: "_Z3fn4v", line: 11, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 11, file: !5, scope: !16, type: !22, variables: !2)
 !22 = !DISubroutineType(types: !23)
 !23 = !{null}
 !24 = distinct !DISubprogram(name: "fn5", linkageName: "_Z3fn5v", line: 13, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 13, file: !5, scope: !16, type: !22, variables: !2)
 !25 = !{!26, !27}
-!26 = !DIGlobalVariable(name: "a", line: 4, isLocal: false, isDefinition: true, scope: null, file: !16, type: !4)
-!27 = !DIGlobalVariable(name: "b", line: 4, isLocal: false, isDefinition: true, scope: null, file: !16, type: !4)
+!26 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", line: 4, isLocal: false, isDefinition: true, scope: null, file: !16, type: !4))
+!27 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", line: 4, isLocal: false, isDefinition: true, scope: null, file: !16, type: !4))
 !28 = !{i32 2, !"Dwarf Version", i32 4}
 !29 = !{i32 2, !"Debug Info Version", i32 3}
 !30 = !{!"clang version 3.7.0 (trunk 227480) (llvm/trunk 227517)"}
 !31 = !DIExpression(DW_OP_deref)
 !32 = !DILocation(line: 6, scope: !15)
 !33 = !DILocation(line: 7, scope: !34)
 !34 = distinct !DILexicalBlock(line: 7, column: 0, file: !5, scope: !15)
 !35 = !{!36, !37, i64 0}

test/Transforms/LoopVectorize/dbg.value.ll

 !4 = !DIFile(filename: "test", directory: "/path/to/somewhere")
 !5 = !DISubroutineType(types: !6)
 !6 = !{!7}
 !7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !8 = !{!9}
 !9 = !DILocalVariable(name: "i", line: 6, scope: !10, file: !4, type: !7)
 !10 = distinct !DILexicalBlock(line: 6, column: 0, file: !25, scope: !3)
 !11 = !{!12, !16, !17}
-!12 = !DIGlobalVariable(name: "A", line: 1, isLocal: false, isDefinition: true, scope: null, file: !4, type: !13)
+!12 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "A", line: 1, isLocal: false, isDefinition: true, scope: null, file: !4, type: !13))
 !13 = !DICompositeType(tag: DW_TAG_array_type, size: 32768, align: 32, baseType: !7, elements: !14)
 !14 = !{!15}
 !15 = !{i32 786465, i64 0, i64 1024}
-!16 = !DIGlobalVariable(name: "B", line: 2, isLocal: false, isDefinition: true, scope: null, file: !4, type: !13)
-!17 = !DIGlobalVariable(name: "C", line: 3, isLocal: false, isDefinition: true, scope: null, file: !4, type: !13)
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "B", line: 2, isLocal: false, isDefinition: true, scope: null, file: !4, type: !13))
+!17 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "C", line: 3, isLocal: false, isDefinition: true, scope: null, file: !4, type: !13))
 !18 = !DILocation(line: 6, scope: !10)
 !19 = !DILocation(line: 7, scope: !20)
 !20 = distinct !DILexicalBlock(line: 6, column: 0, file: !25, scope: !10)
 !24 = !DILocation(line: 9, scope: !3)
 !25 = !DIFile(filename: "test", directory: "/path/to/somewhere")
 !26 = !{i32 1, !"Debug Info Version", i32 3}

test/Transforms/SampleProfile/cov-zero-samples.ll

 !4 = distinct !DISubprogram(name: "never_called", linkageName: "_Z12never_calledi", scope: !1, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
 !5 = !DISubroutineType(types: !6)
 !6 = !{!7, !7}
 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !8 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !9, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
 !9 = !DISubroutineType(types: !10)
 !10 = !{!7}
 !11 = !{!12}
-!12 = !DIGlobalVariable(name: "N", scope: !0, file: !1, line: 3, type: !13, isLocal: false, isDefinition: true)
+!12 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "N", scope: !0, file: !1, line: 3, type: !13, isLocal: false, isDefinition: true))
 !13 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !14)
 !14 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
 !15 = !{i32 2, !"Dwarf Version", i32 4}
 !16 = !{i32 2, !"Debug Info Version", i32 3}
 !17 = !{!"clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)"}
 !19 = !DIExpression()
 !31 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 3)
 !32 = !DILocation(line: 5, column: 27, scope: !31)

test/Transforms/SimplifyCFG/PR27615-simplify-cond-br.ll

 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!12, !13}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "FlexC Compiler v6.36 (LLVM)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3)
 !1 = !DIFile(filename: "csmith107.i.c", directory: "/tmp")
 !2 = !{}
 !3 = !{!4, !6, !10}
-!4 = !DIGlobalVariable(name: "a", scope: null, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true)
+!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "a", scope: null, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true))
 !5 = !DIBasicType(name: "int", size: 16, align: 16, encoding: DW_ATE_signed)
-!6 = !DIGlobalVariable(name: "b", scope: null, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true)
+!6 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", scope: null, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true))
 !7 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint32_t", file: !1, line: 1, baseType: !8)
 !8 = !DIDerivedType(tag: DW_TAG_typedef, name: "__u32_t", file: !1, baseType: !9)
 !9 = !DIBasicType(name: "unsigned long", size: 32, align: 16, encoding: DW_ATE_unsigned)
-!10 = !DIGlobalVariable(name: "c", scope: null, file: !1, line: 4, type: !11, isLocal: false, isDefinition: true)
+!10 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "c", scope: null, file: !1, line: 4, type: !11, isLocal: false, isDefinition: true))
 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 16, align: 16)
 !12 = !{i32 2, !"Dwarf Version", i32 4}
 !13 = !{i32 2, !"Debug Info Version", i32 3}
 !15 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 5, type: !16, isLocal: false, isDefinition: true, scopeLine: 5, isOptimized: false, unit: !0, variables: !2)
 !16 = !DISubroutineType(types: !17)
 !17 = !{!5}
 !19 = !DILocation(line: 8, column: 16, scope: !20)
 !20 = !DILexicalBlock(scope: !15, file: !1, line: 7, column: 29)
 !22 = !DILocalVariable(name: "d", scope: !20, line: 8, type: !5)
 !23 = !DIExpression()
 !24 = !DILocation(line: 8, column: 9, scope: !20)
 !25 = !DILocalVariable(name: "e", scope: !20, line: 8, type: !5)
 

test/Transforms/StripSymbols/2010-06-30-StripDebug.ll

 !0 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !2, file: !12, scope: !1, type: !3)
 !1 = !DIFile(filename: "b.c", directory: "/tmp")
 !2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: FullDebug, file: !12, globals: !{!8})
 !3 = !DISubroutineType(types: !4)
 !4 = !{null}
 !5 = !DILocalVariable(name: "y", line: 3, scope: !6, file: !1, type: !7)
 !6 = distinct !DILexicalBlock(line: 2, column: 0, file: !12, scope: !0)
 !7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!8 = !DIGlobalVariable(name: "x", line: 1, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !7)
+!8 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "x", line: 1, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !7))
 !9 = !{i32 0}
 !10 = !DILocation(line: 3, scope: !6)
 !11 = !DILocation(line: 4, scope: !6)
 !12 = !DIFile(filename: "b.c", directory: "/tmp")
 !13 = !{i32 1, !"Debug Info Version", i32 3}

test/Transforms/StripSymbols/2010-08-25-crash.ll

 ; RUN: opt -strip-dead-debug-info -disable-output < %s
 define i32 @foo() nounwind ssp !dbg !0 {
 entry:
   ret i32 0, !dbg !8
 }
 
 !llvm.dbg.cu = !{!2}
 !llvm.module.flags = !{!14}
 
 !0 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !2, file: !10, scope: !1, type: !3)
 !1 = !DIFile(filename: "/tmp/a.c", directory: "/Volumes/Lalgate/clean/D.CW")
 !2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.8 (trunk 112062)", isOptimized: true, emissionKind: FullDebug, file: !10, enums: !11, retainedTypes: !11, globals: !13)
 !3 = !DISubroutineType(types: !4)
 !4 = !{!5}
 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!6 = !DIGlobalVariable(name: "i", linkageName: "i", line: 2, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !7)
+!6 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "i", linkageName: "i", line: 2, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !7))
 !7 = !DIDerivedType(tag: DW_TAG_const_type, file: !10, scope: !1, baseType: !5)
 !8 = !DILocation(line: 3, column: 13, scope: !9)
 !9 = distinct !DILexicalBlock(line: 3, column: 11, file: !10, scope: !0)
 !10 = !DIFile(filename: "/tmp/a.c", directory: "/Volumes/Lalgate/clean/D.CW")
 !11 = !{}
 !13 = !{!6}
 !14 = !{i32 1, !"Debug Info Version", i32 3}

test/Transforms/StripSymbols/strip-dead-debug-info.ll

 !8 = !{!9}
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !0, file: !1, scope: null, type: !11)
 !11 = !DISubroutineType(types: !12)
 !12 = !{!9, !9}
 !13 = !DILocalVariable(name: "bb", line: 5, scope: !14, file: !5, type: !9)
 !14 = distinct !DILexicalBlock(line: 5, column: 0, file: !1, scope: !3)
 !15 = !DILocalVariable(name: "i", line: 7, arg: 1, scope: !10, file: !5, type: !9)
-!16 = !DIGlobalVariable(name: "abcd", line: 2, isLocal: true, isDefinition: true, scope: !5, file: !5, type: !9)
-!17 = !DIGlobalVariable(name: "xyz", line: 3, isLocal: false, isDefinition: true, scope: !5, file: !5, type: !9)
+!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "abcd", line: 2, isLocal: true, isDefinition: true, scope: !5, file: !5, type: !9))
+!17 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "xyz", line: 3, isLocal: false, isDefinition: true, scope: !5, file: !5, type: !9))
 !18 = !DILocation(line: 6, scope: !19)
 !19 = distinct !DILexicalBlock(line: 6, column: 0, file: !1, scope: !6)
 !20 = !DILocation(line: 7, scope: !10)
 !21 = !DILocation(line: 10, scope: !22)
 !22 = distinct !DILexicalBlock(line: 7, column: 0, file: !1, scope: !10)
 !24 = !{!16, !17}
 !25 = !{i32 1, !"Debug Info Version", i32 3}

test/Transforms/Util/strip-nonlinetable-debuginfo-containingtypes.ll

 attributes #2 = { nounwind }
 
 !llvm.dbg.cu = !{!1}
 !llvm.module.flags = !{!20, !21, !22}
 !llvm.ident = !{!23}
 
 ; CHECK-NEG-NOT: !DI{{Basic|Composite|Derived}}Type
 
-!0 = distinct !DIGlobalVariable(name: "b", scope: !1, file: !2, line: 5, type: !5, isLocal: false, isDefinition: true)
+!0 = distinct !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "b", scope: !1, file: !2, line: 5, type: !5, isLocal: false, isDefinition: true))
 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 4.0.0 (trunk 282583) (llvm/trunk 282611)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, globals: !4)
 !2 = !DIFile(filename: "t.cpp", directory: "/")
 !3 = !{}
 !4 = !{!0}
 !5 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "B", file: !2, line: 4, size: 64, align: 64, elements: !6, vtableHolder: !8, identifier: "_ZTS1B")
 !6 = !{!7}
 !7 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !5, baseType: !8)
 !8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !2, line: 1, size: 64, align: 64, elements: !9, vtableHolder: !8, identifier: "_ZTS1A")

test/Verifier/diglobalvariable.ll

+; RUN: not opt -S <%s 2>&1| FileCheck %s
+
+; CHECK: !dbg attachment of global variable must be a DIGlobalVariableExpression
+@g = common global i32 0, align 4, !dbg !0
+
+!llvm.dbg.cu = !{!1}
+!llvm.module.flags = !{!6, !7}
+
+!0 = distinct !DIGlobalVariable(name: "g", scope: !1, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true)
+!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, emissionKind: FullDebug)
+!2 = !DIFile(filename: "a.c", directory: "/")
+!5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!6 = !{i32 2, !"Dwarf Version", i32 4}
+!7 = !{i32 2, !"Debug Info Version", i32 3}

unittests/IR/MetadataTest.cpp

TEST_F(DIGlobalVariableTest, get) {
   DIScope *Scope = getSubprogram();
   StringRef Name = "name";
   StringRef LinkageName = "linkage";
   DIFile *File = getFile();
   unsigned Line = 5;
   DIType *Type = getDerivedType();
   bool IsLocalToUnit = false;
   bool IsDefinition = true;
-  auto *Expr = DIExpression::get(Context, {1, 2});
-  auto *Expr2 = DIExpression::get(Context, {1, 2, 3});
   DIDerivedType *StaticDataMemberDeclaration =
       cast<DIDerivedType>(getDerivedType());
   uint32_t AlignInBits = 8;
 
   auto *N = DIGlobalVariable::get(Context, Scope, Name, LinkageName, File, Line,
                                   Type, IsLocalToUnit, IsDefinition,
-                                  Expr, StaticDataMemberDeclaration,
-                                  AlignInBits);
+                                  StaticDataMemberDeclaration, AlignInBits);
   EXPECT_EQ(dwarf::DW_TAG_variable, N->getTag());
   EXPECT_EQ(Scope, N->getScope());
   EXPECT_EQ(Name, N->getName());
   EXPECT_EQ(LinkageName, N->getLinkageName());
   EXPECT_EQ(File, N->getFile());
   EXPECT_EQ(Line, N->getLine());
   EXPECT_EQ(Type, N->getType());
   EXPECT_EQ(IsLocalToUnit, N->isLocalToUnit());
   EXPECT_EQ(IsDefinition, N->isDefinition());
-  EXPECT_EQ(Expr, N->getExpr());
   EXPECT_EQ(StaticDataMemberDeclaration, N->getStaticDataMemberDeclaration());
   EXPECT_EQ(AlignInBits, N->getAlignInBits());
   EXPECT_EQ(N, DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
                                      Line, Type, IsLocalToUnit, IsDefinition,
-                                     Expr, StaticDataMemberDeclaration,
-                                     AlignInBits));
+                                     StaticDataMemberDeclaration, AlignInBits));
 
   EXPECT_NE(N,
             DIGlobalVariable::get(Context, getSubprogram(), Name, LinkageName,
                                   File, Line, Type, IsLocalToUnit, IsDefinition,
-                                  Expr, StaticDataMemberDeclaration,
-                                  AlignInBits));
+                                  StaticDataMemberDeclaration, AlignInBits));
   EXPECT_NE(N, DIGlobalVariable::get(Context, Scope, "other", LinkageName, File,
                                      Line, Type, IsLocalToUnit, IsDefinition,
-                                     Expr, StaticDataMemberDeclaration,
-                                     AlignInBits));
+                                     StaticDataMemberDeclaration, AlignInBits));
   EXPECT_NE(N, DIGlobalVariable::get(Context, Scope, Name, "other", File, Line,
-                                     Type, IsLocalToUnit, IsDefinition, Expr,
-                                     StaticDataMemberDeclaration,
-                                     AlignInBits));
+                                     Type, IsLocalToUnit, IsDefinition,
+                                     StaticDataMemberDeclaration, AlignInBits));
   EXPECT_NE(N,
             DIGlobalVariable::get(Context, Scope, Name, LinkageName, getFile(),
-                                  Line, Type, IsLocalToUnit, IsDefinition, Expr,
-                                  StaticDataMemberDeclaration,
-                                  AlignInBits));
+                                  Line, Type, IsLocalToUnit, IsDefinition,
+                                  StaticDataMemberDeclaration, AlignInBits));
   EXPECT_NE(N,
             DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
                                   Line + 1, Type, IsLocalToUnit, IsDefinition,
-                                  Expr, StaticDataMemberDeclaration,
-                                  AlignInBits));
+                                  StaticDataMemberDeclaration, AlignInBits));
   EXPECT_NE(N,
             DIGlobalVariable::get(Context, Scope, Name, LinkageName, File, Line,
                                   getDerivedType(), IsLocalToUnit, IsDefinition,
-                                  Expr, StaticDataMemberDeclaration,
-                                  AlignInBits));
+                                  StaticDataMemberDeclaration, AlignInBits));
   EXPECT_NE(N, DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
                                      Line, Type, !IsLocalToUnit, IsDefinition,
-                                     Expr, StaticDataMemberDeclaration,
-                                     AlignInBits));
+                                     StaticDataMemberDeclaration, AlignInBits));
   EXPECT_NE(N, DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
                                      Line, Type, IsLocalToUnit, !IsDefinition,
-                                     Expr, StaticDataMemberDeclaration,
-                                     AlignInBits));
+                                     StaticDataMemberDeclaration, AlignInBits));
   EXPECT_NE(N, DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
                                      Line, Type, IsLocalToUnit, IsDefinition,
-                                     Expr2, StaticDataMemberDeclaration,
-                                     AlignInBits));
-  EXPECT_NE(N,
-            DIGlobalVariable::get(Context, Scope, Name, LinkageName, File, Line,
-                                  Type, IsLocalToUnit, IsDefinition, Expr,
                                      cast<DIDerivedType>(getDerivedType()),
                                      AlignInBits));
   EXPECT_NE(N, DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
                                      Line, Type, IsLocalToUnit, IsDefinition,
-                                     Expr, StaticDataMemberDeclaration,
+                                     StaticDataMemberDeclaration,
                                      (AlignInBits << 1)));
 
   TempDIGlobalVariable Temp = N->clone();
   EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
 }
 
+typedef MetadataTest DIGlobalVariableExpressionTest;
+
+TEST_F(DIGlobalVariableExpressionTest, get) {
+  DIScope *Scope = getSubprogram();
+  StringRef Name = "name";
+  StringRef LinkageName = "linkage";
+  DIFile *File = getFile();
+  unsigned Line = 5;
+  DIType *Type = getDerivedType();
+  bool IsLocalToUnit = false;
+  bool IsDefinition = true;
+  auto *Expr = DIExpression::get(Context, {1, 2});
+  auto *Expr2 = DIExpression::get(Context, {1, 2, 3});
+  DIDerivedType *StaticDataMemberDeclaration =
+      cast<DIDerivedType>(getDerivedType());
+  uint32_t AlignInBits = 8;
+
+  auto *Var = DIGlobalVariable::get(Context, Scope, Name, LinkageName, File,
+                                    Line, Type, IsLocalToUnit, IsDefinition,
+                                    StaticDataMemberDeclaration, AlignInBits);
+  auto *Var2 = DIGlobalVariable::get(Context, Scope, "other", LinkageName, File,
+                                     Line, Type, IsLocalToUnit, IsDefinition,
+                                     StaticDataMemberDeclaration, AlignInBits);
+  auto *N = DIGlobalVariableExpression::get(Context, Var, Expr);
+
+  EXPECT_EQ(Var, N->getVariable());
+  EXPECT_EQ(Expr, N->getExpression());
+  EXPECT_EQ(N, DIGlobalVariableExpression::get(Context, Var, Expr));
+  EXPECT_NE(N, DIGlobalVariableExpression::get(Context, Var2, Expr));
+  EXPECT_NE(N, DIGlobalVariableExpression::get(Context, Var, Expr2));
+
+  TempDIGlobalVariableExpression Temp = N->clone();
+  EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
+}
+
 typedef MetadataTest DILocalVariableTest;
 
 TEST_F(DILocalVariableTest, get) {
   DILocalScope *Scope = getSubprogram();
   StringRef Name = "name";
   DIFile *File = getFile();
   unsigned Line = 5;
   DIType *Type = getDerivedType();