Index: llvm/include/llvm/CodeGen/MachineInstr.h
===================================================================
--- llvm/include/llvm/CodeGen/MachineInstr.h
+++ llvm/include/llvm/CodeGen/MachineInstr.h
@@ -23,6 +23,7 @@
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/TargetOpcodes.h"
+#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/MC/MCInstrDesc.h"
@@ -479,6 +480,11 @@
/// Returns the number of non-implicit definitions.
unsigned getNumExplicitDefs() const;
+ /// Returns true if it has implicit pointer expression
+ bool isImplicitPointer() const {
+ return getDebugExpression()->isImplicitPointer();
+ }
+
/// iterator/begin/end - Iterate over all operands of a machine instruction.
using mop_iterator = MachineOperand *;
using const_mop_iterator = const MachineOperand *;
Index: llvm/include/llvm/CodeGen/MachineInstrBuilder.h
===================================================================
--- llvm/include/llvm/CodeGen/MachineInstrBuilder.h
+++ llvm/include/llvm/CodeGen/MachineInstrBuilder.h
@@ -224,10 +224,12 @@
return *this;
}
- const MachineInstrBuilder &addMetadata(const MDNode *MD) const {
+ const MachineInstrBuilder &addMetadata(const MDNode *MD,
+ bool IsImplicitPointer = false) const {
MI->addOperand(*MF, MachineOperand::CreateMetadata(MD));
- assert((MI->isDebugValue() ? static_cast<bool>(MI->getDebugVariable())
- : true) &&
+ assert(((MI->isDebugValue() && !IsImplicitPointer)
+ ? static_cast<bool>(MI->getDebugVariable())
+ : true) &&
"first MDNode argument of a DBG_VALUE not a variable");
assert((MI->isDebugLabel() ? static_cast<bool>(MI->getDebugLabel())
: true) &&
Index: llvm/include/llvm/CodeGen/SelectionDAG.h
===================================================================
--- llvm/include/llvm/CodeGen/SelectionDAG.h
+++ llvm/include/llvm/CodeGen/SelectionDAG.h
@@ -1309,6 +1309,11 @@
unsigned VReg, bool IsIndirect,
const DebugLoc &DL, unsigned O);
+ /// Creates an Implicit Pointer SDDbgValue node.
+ SDDbgValue *getImpPtrDbgValue(DIVariable *Var, DIExpression *Expr,
+ DIVariable *Val, const DebugLoc &DL,
+ unsigned O);
+
/// Creates a SDDbgLabel node.
SDDbgLabel *getDbgLabel(DILabel *Label, const DebugLoc &DL, unsigned O);
Index: llvm/include/llvm/IR/DebugInfoMetadata.h
===================================================================
--- llvm/include/llvm/IR/DebugInfoMetadata.h
+++ llvm/include/llvm/IR/DebugInfoMetadata.h
@@ -2467,6 +2467,12 @@
/// Return whether this is a piece of an aggregate variable.
bool isFragment() const { return getFragmentInfo().hasValue(); }
+ /// Return whether this is an Implicit Pointer
+ bool isImplicitPointer() const {
+ return getNumElements() > 0 &&
+ (expr_op_begin()->getOp() == dwarf::DW_OP_implicit_pointer);
+ }
+
/// Return whether this is an implicit location description.
bool isImplicit() const;
Index: llvm/include/llvm/IR/IntrinsicInst.h
===================================================================
--- llvm/include/llvm/IR/IntrinsicInst.h
+++ llvm/include/llvm/IR/IntrinsicInst.h
@@ -24,6 +24,7 @@
#define LLVM_IR_INTRINSICINST_H
#include "llvm/IR/Constants.h"
+#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalVariable.h"
@@ -117,6 +118,14 @@
/// is described.
Optional<uint64_t> getFragmentSizeInBits() const;
+ /// Returns true if it has an implicit pointer expression
+ bool isImplicitPointer() const {
+ if (!isa<DIExpression>(getRawExpression()))
+ return false;
+
+ return getExpression()->isImplicitPointer();
+ }
+
/// \name Casting methods
/// @{
static bool classof(const IntrinsicInst *I) {
Index: llvm/lib/CodeGen/AsmPrinter/DebugLocEntry.h
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/DebugLocEntry.h
+++ llvm/lib/CodeGen/AsmPrinter/DebugLocEntry.h
@@ -26,10 +26,16 @@
const DIExpression *Expression;
/// Type of entry that this represents.
- enum EntryType { E_Location, E_Integer, E_ConstantFP, E_ConstantInt };
+ enum EntryType {
+ E_Location,
+ E_Integer,
+ E_ConstantFP,
+ E_ConstantInt,
+ E_ImplicitPtr
+ };
enum EntryType EntryKind;
- /// Either a constant,
+ /// a constant,
union {
int64_t Int;
const ConstantFP *CFP;
@@ -39,6 +45,9 @@
/// Or a location in the machine frame.
MachineLocation Loc;
+ /// Or an implicit pointer variable target
+ const DIVariable *ImpPtr;
+
public:
DbgValueLoc(const DIExpression *Expr, int64_t i)
: Expression(Expr), EntryKind(E_Integer) {
@@ -56,15 +65,21 @@
: Expression(Expr), EntryKind(E_Location), Loc(Loc) {
assert(cast<DIExpression>(Expr)->isValid());
}
+ DbgValueLoc(const DIExpression *Expr, const DIVariable *ImpPtr)
+ : Expression(Expr), EntryKind(E_ImplicitPtr), ImpPtr(ImpPtr) {
+ assert(cast<DIExpression>(Expr)->isValid());
+ }
bool isLocation() const { return EntryKind == E_Location; }
bool isInt() const { return EntryKind == E_Integer; }
bool isConstantFP() const { return EntryKind == E_ConstantFP; }
bool isConstantInt() const { return EntryKind == E_ConstantInt; }
+ bool isImplicitPtr() const { return EntryKind == E_ImplicitPtr; }
int64_t getInt() const { return Constant.Int; }
const ConstantFP *getConstantFP() const { return Constant.CFP; }
const ConstantInt *getConstantInt() const { return Constant.CIP; }
MachineLocation getLoc() const { return Loc; }
+ const DIVariable *getImplicitPointer() const { return ImpPtr; }
bool isFragment() const { return getExpression()->isFragment(); }
bool isEntryVal() const { return getExpression()->isEntryValue(); }
const DIExpression *getExpression() const { return Expression; }
@@ -168,6 +183,8 @@
return A.Constant.CFP == B.Constant.CFP;
case DbgValueLoc::E_ConstantInt:
return A.Constant.CIP == B.Constant.CIP;
+ case DbgValueLoc::E_ImplicitPtr:
+ return A.ImpPtr == B.ImpPtr;
}
llvm_unreachable("unhandled EntryKind");
}
Index: llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
+++ llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
@@ -72,6 +72,15 @@
// List of ranges for a given compile unit.
SmallVector<RangeSpan, 2> CURanges;
+ // First operand of DW_OP_implicit_pointer operation is a reference to a
+ // debugging information entry that describes the dereferenced object’s value.
+ // when this operation is created, the debugging information entry is not yet
+ // formed. To solve this problem, we maintain a vector of dereferenced
+ // objects. We keep index of dereferenced object's at first operand of
+ // DW_OP_implicit_pointer operation temporarily. This temporary value is
+ // later replaced by actual value when available.
+ std::vector<const DINode *> ImplicitVars;
+
// The base address of this unit, if any. Used for relative references in
// ranges/locs.
const MCSymbol *BaseAddress = nullptr;
@@ -117,6 +126,19 @@
void initStmtList();
+ unsigned findOrInsertImplicitVar(const DINode *var) {
+ std::vector<const DINode *>::iterator it =
+ std::find(ImplicitVars.begin(), ImplicitVars.end(), var);
+ if (it == ImplicitVars.end()) {
+ ImplicitVars.push_back(var);
+ return ImplicitVars.size() - 1;
+ } else
+ return std::distance(ImplicitVars.begin(), it);
+ }
+
+ const DINode *findImplicitVarAtIndex(unsigned idx) const {
+ return ImplicitVars[idx];
+ }
/// Apply the DW_AT_stmt_list from this compile unit to the specified DIE.
void applyStmtList(DIE &D);
Index: llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -989,7 +989,8 @@
DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
DwarfExpr.setCallSiteParamValueFlag();
- DwarfDebug::emitDebugLocValue(*Asm, nullptr, Param.getValue(), DwarfExpr);
+ DwarfDebug::emitDebugLocValue(*Asm, nullptr, Param.getValue(), DwarfExpr,
+ *this);
addBlock(*CallSiteDieParam, getDwarf5OrGNUAttr(dwarf::DW_AT_call_value),
DwarfExpr.finalize());
Index: llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -758,7 +758,8 @@
static void emitDebugLocValue(const AsmPrinter &AP, const DIBasicType *BT,
const DbgValueLoc &Value,
- DwarfExpression &DwarfExpr);
+ DwarfExpression &DwarfExpr,
+ DwarfCompileUnit &TheCU);
};
} // end namespace llvm
Index: llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -192,6 +192,26 @@
getActiveStreamer().EmitULEB128(Idx, Twine(Idx), ULEB128PadSize);
}
+void DebugLocDwarfExpression::emitAddressRef(uint64_t Idx) {
+ uint8_t val;
+ uint8_t NumBytes;
+
+ switch (CU.getAsmPrinter()->OutStreamer->getContext().getDwarfFormat()) {
+ case dwarf::DWARF32:
+ NumBytes = 4;
+ break;
+ case dwarf::DWARF64:
+ NumBytes = 8;
+ break;
+ }
+
+ while (NumBytes--) {
+ val = Idx & 0xff;
+ Idx = Idx >> 8;
+ getActiveStreamer().EmitInt8(val, Twine(Idx));
+ }
+}
+
bool DebugLocDwarfExpression::isFrameRegister(const TargetRegisterInfo &TRI,
unsigned MachineReg) {
// This information is not available while emitting .debug_loc entries.
@@ -247,6 +267,11 @@
return DbgValueLoc(Expr, MI->getOperand(0).getFPImm());
if (MI->getOperand(0).isCImm())
return DbgValueLoc(Expr, MI->getOperand(0).getCImm());
+ if (MI->getOperand(0).isMetadata()) {
+ // first operand can be metadata in case of implicit pointer
+ const DIVariable *DVI = cast<DIVariable>(MI->getOperand(0).getMetadata());
+ return DbgValueLoc(Expr, DVI);
+ }
llvm_unreachable("Unexpected 4-operand DBG_VALUE instruction!");
}
@@ -1548,10 +1573,13 @@
// Check if there is a single DBG_VALUE, valid throughout the var's scope.
// If the history map contains a single debug value, there may be an
// additional entry which clobbers the debug value.
+ // In case of implicit pointer, implicit target can not initialize
+ // variable so we need to create location list even in case of single value
size_t HistSize = HistoryMapEntries.size();
bool SingleValueWithClobber =
HistSize == 2 && HistoryMapEntries[1].isClobber();
- if (HistSize == 1 || SingleValueWithClobber) {
+ if (!MInsn->isImplicitPointer() &&
+ (HistSize == 1 || SingleValueWithClobber)) {
const auto *End =
SingleValueWithClobber ? HistoryMapEntries[1].getInstr() : nullptr;
if (validThroughout(LScopes, MInsn, End)) {
@@ -1574,7 +1602,9 @@
// Check whether buildLocationList managed to merge all locations to one
// that is valid throughout the variable's scope. If so, produce single
// value location.
- if (isValidSingleLocation) {
+ // In case of implicit pointer, implicit target can not initialize
+ // variable so we need to create location list even in case of single value
+ if (!MInsn->isImplicitPointer() && isValidSingleLocation) {
RegVar->initializeDbgValue(Entries[0].getValues()[0]);
continue;
}
@@ -2177,6 +2207,27 @@
for (unsigned J = 0; J < ULEB128PadSize; ++J)
if (Comment != End)
Comment++;
+ } else if ((Op.getCode() == dwarf::DW_OP_implicit_pointer) &&
+ (Op.getDescription().Op[I] == Encoding::SizeRefAddr)) {
+ // Till now we do not have actual offset from debug_info section
+ // all we have is index in a list of variable, we can now compute
+ // actual offset
+ unsigned valOffset = 0;
+ // read the dummy offset (index)
+ for (uint64_t J = Op.getOperandEndOffset(I) - 1; J >= Offset; --J)
+ valOffset = (valOffset << 8) + Data.getData()[J];
+ // get the variable and compute the actual offset
+ const DINode *impVar = CU->findImplicitVarAtIndex(valOffset);
+ DIE *die = CU->getDIE(impVar);
+ if (die)
+ valOffset = die->getDebugSectionOffset();
+
+ // emit the actual offset
+ for (uint64_t J = Offset; J < Op.getOperandEndOffset(I); ++J) {
+ Streamer.EmitInt8(valOffset & 0xff,
+ Comment != End ? *(Comment++) : "");
+ valOffset = valOffset >> 8;
+ }
} else {
for (uint64_t J = Offset; J < Op.getOperandEndOffset(I); ++J)
Streamer.EmitInt8(Data.getData()[J], Comment != End ? *(Comment++) : "");
@@ -2189,7 +2240,8 @@
void DwarfDebug::emitDebugLocValue(const AsmPrinter &AP, const DIBasicType *BT,
const DbgValueLoc &Value,
- DwarfExpression &DwarfExpr) {
+ DwarfExpression &DwarfExpr,
+ DwarfCompileUnit &TheCU) {
auto *DIExpr = Value.getExpression();
DIExpressionCursor ExprCursor(DIExpr);
DwarfExpr.addFragmentOffset(DIExpr);
@@ -2218,6 +2270,13 @@
} else if (Value.isConstantFP()) {
APInt RawBytes = Value.getConstantFP()->getValueAPF().bitcastToAPInt();
DwarfExpr.addUnsignedConstant(RawBytes);
+ } else if (Value.isImplicitPtr()) {
+ const llvm::DIVariable *impVar = Value.getImplicitPointer();
+ unsigned valOffset = TheCU.findOrInsertImplicitVar(impVar);
+ // This works as dummy offset in first operand of DW_OP_implicit_pointer
+ // this will later be replace by actual offset of variable in .debug_info
+ DwarfExpr.emitImplicitPointer(std::move(ExprCursor), valOffset);
+ return;
}
DwarfExpr.addExpression(std::move(ExprCursor));
}
@@ -2242,11 +2301,11 @@
"fragments are expected to be sorted");
for (auto Fragment : Values)
- DwarfDebug::emitDebugLocValue(AP, BT, Fragment, DwarfExpr);
+ DwarfDebug::emitDebugLocValue(AP, BT, Fragment, DwarfExpr, TheCU);
} else {
assert(Values.size() == 1 && "only fragments may have >1 value");
- DwarfDebug::emitDebugLocValue(AP, BT, Value, DwarfExpr);
+ DwarfDebug::emitDebugLocValue(AP, BT, Value, DwarfExpr, TheCU);
}
DwarfExpr.finalize();
}
Index: llvm/lib/CodeGen/AsmPrinter/DwarfExpression.h
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/DwarfExpression.h
+++ llvm/lib/CodeGen/AsmPrinter/DwarfExpression.h
@@ -188,6 +188,8 @@
virtual void emitBaseTypeRef(uint64_t Idx) = 0;
+ virtual void emitAddressRef(uint64_t Idx) = 0;
+
/// Start emitting data to the temporary buffer. The data stored in the
/// temporary buffer can be committed to the main output using
/// commitTemporaryBuffer().
@@ -337,6 +339,7 @@
void emitLegacySExt(unsigned FromBits);
void emitLegacyZExt(unsigned FromBits);
+ void emitImplicitPointer(DIExpressionCursor &&Expr, unsigned ValOffset);
};
/// DwarfExpression implementation for .debug_loc entries.
@@ -362,6 +365,7 @@
void emitUnsigned(uint64_t Value) override;
void emitData1(uint8_t Value) override;
void emitBaseTypeRef(uint64_t Idx) override;
+ void emitAddressRef(uint64_t Idx) override;
void enableTemporaryBuffer() override;
void disableTemporaryBuffer() override;
@@ -391,6 +395,7 @@
void emitUnsigned(uint64_t Value) override;
void emitData1(uint8_t Value) override;
void emitBaseTypeRef(uint64_t Idx) override;
+ void emitAddressRef(uint64_t Idx) override{};
void enableTemporaryBuffer() override;
void disableTemporaryBuffer() override;
Index: llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
+++ llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
@@ -576,3 +576,17 @@
emitUnsigned((1ULL << FromBits) - 1);
emitOp(dwarf::DW_OP_and);
}
+
+void DwarfExpression::emitImplicitPointer(DIExpressionCursor &&ExprCursor,
+ unsigned ValOffset) {
+ auto Op = ExprCursor.take();
+ assert(Op->getOp() == dwarf::DW_OP_implicit_pointer &&
+ "not dwarf::DW_OP_implicit_pointer");
+
+ emitOp(dwarf::DW_OP_implicit_pointer);
+ // this is a dummy offset which will later be replaced with actual offset
+ // of variable in .debug_info
+ emitAddressRef(ValOffset);
+ emitSigned(Op->getArg(0));
+ return;
+}
Index: llvm/lib/CodeGen/LiveDebugValues.cpp
===================================================================
--- llvm/lib/CodeGen/LiveDebugValues.cpp
+++ llvm/lib/CodeGen/LiveDebugValues.cpp
@@ -692,7 +692,7 @@
OpenRanges.insert(ID, VL.Var);
} else if (MI.hasOneMemOperand()) {
llvm_unreachable("DBG_VALUE with mem operand encountered after regalloc?");
- } else {
+ } else if (!MI.isImplicitPointer()) {
// This must be an undefined location. We should leave OpenRanges closed.
assert(MI.getOperand(0).isReg() && MI.getOperand(0).getReg() == 0 &&
"Unexpected non-undef DBG_VALUE encountered");
Index: llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -744,6 +744,10 @@
// dropped.
MIB.addReg(0U);
}
+ } else if (SD->getKind() == SDDbgValue::IMPPTR) {
+ const MDNode *DV = SD->getImplicitPointer();
+ // insert implicit pointer
+ MIB.addMetadata(DV, /* IsImplicitPointer */ true);
} else {
// Insert an Undef so we can see what we dropped.
MIB.addReg(0U);
Index: llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
+++ llvm/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
@@ -33,7 +33,8 @@
SDNODE = 0, ///< Value is the result of an expression.
CONST = 1, ///< Value is a constant.
FRAMEIX = 2, ///< Value is contents of a stack location.
- VREG = 3 ///< Value is a virtual register.
+ VREG = 3, ///< Value is a virtual register.
+ IMPPTR = 4 ///< Value is an implicit pointer.
};
private:
union {
@@ -44,6 +45,7 @@
const Value *Const; ///< Valid for constants.
unsigned FrameIx; ///< Valid for stack objects.
unsigned VReg; ///< Valid for registers.
+ DIVariable *ImpPtr;
} u;
DIVariable *Var;
DIExpression *Expr;
@@ -86,6 +88,14 @@
u.FrameIx = VRegOrFrameIdx;
}
+ /// Constructor for Implicit Pointer.
+ SDDbgValue(DIVariable *Var, DIExpression *Expr, DIVariable *Val, DebugLoc dl,
+ unsigned O)
+ : Var(Var), Expr(Expr), DL(std::move(dl)), Order(O), IsIndirect(false) {
+ kind = IMPPTR;
+ u.ImpPtr = Val;
+ }
+
/// Returns the kind.
DbgValueKind getKind() const { return kind; }
@@ -110,6 +120,12 @@
/// Returns the Virtual Register for a VReg
unsigned getVReg() const { assert (kind==VREG); return u.VReg; }
+ /// Returns the implicit pointer target
+ DIVariable *getImplicitPointer() const {
+ assert(kind == IMPPTR);
+ return u.ImpPtr;
+ }
+
/// Returns whether this is an indirect value.
bool isIndirect() const { return IsIndirect; }
Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -8018,6 +8018,15 @@
SDDbgValue(Var, Expr, VReg, IsIndirect, DL, O, SDDbgValue::VREG);
}
+/// Implicit pointer
+SDDbgValue *SelectionDAG::getImpPtrDbgValue(DIVariable *Var, DIExpression *Expr,
+ DIVariable *Val, const DebugLoc &DL,
+ unsigned O) {
+ assert(cast<DILocalVariable>(Var)->isValidLocationForIntrinsic(DL) &&
+ "Expected inlined-at fields to agree");
+ return new (DbgInfo->getAlloc()) SDDbgValue(Var, Expr, Val, DL, O);
+}
+
void SelectionDAG::transferDbgValues(SDValue From, SDValue To,
unsigned OffsetInBits, unsigned SizeInBits,
bool InvalidateDbg) {
Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -1277,6 +1277,13 @@
return true;
}
+ if (const llvm::MetadataAsValue *MDV = dyn_cast<llvm::MetadataAsValue>(V)) {
+ if (DILocalVariable *DLV = dyn_cast<DILocalVariable>(MDV->getMetadata())) {
+ SDV = DAG.getImpPtrDbgValue(Var, Expr, DLV, dl, SDNodeOrder);
+ DAG.AddDbgValue(SDV, nullptr, false);
+ return true;
+ }
+ }
// If the Value is a frame index, we can create a FrameIndex debug value
// without relying on the DAG at all.
if (const AllocaInst *AI = dyn_cast<AllocaInst>(V)) {
Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
@@ -769,6 +769,11 @@
case VREG:
OS << "(VREG=" << getVReg() << ')';
break;
+ case IMPPTR:
+ // implicit pointer will be printed as
+ // DbgVal(Order=1)(IMPPTR=arr):"ptr"!DIExpression(DW_OP_implicit_pointer, 0)
+ OS << "(IMPPTR=" << u.ImpPtr->getName() << ')';
+ break;
}
if (isIndirect()) OS << "(Indirect)";
OS << ":\"" << Var->getName() << '"';
Index: llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp
===================================================================
--- llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp
+++ llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp
@@ -101,6 +101,8 @@
Descriptions[DW_OP_convert] = Desc(Op::Dwarf5, Op::BaseTypeRef);
Descriptions[DW_OP_entry_value] = Desc(Op::Dwarf5, Op::SizeLEB);
+ Descriptions[DW_OP_implicit_pointer] =
+ Desc(Op::Dwarf5, Op::SizeRefAddr, Op::SignedSizeLEB);
return Descriptions;
}
Index: llvm/lib/IR/DebugInfoMetadata.cpp
===================================================================
--- llvm/lib/IR/DebugInfoMetadata.cpp
+++ llvm/lib/IR/DebugInfoMetadata.cpp
@@ -845,6 +845,7 @@
case dwarf::DW_OP_LLVM_tag_offset:
case dwarf::DW_OP_LLVM_entry_value:
case dwarf::DW_OP_regx:
+ case dwarf::DW_OP_implicit_pointer:
return 2;
default:
return 1;
@@ -922,6 +923,7 @@
case dwarf::DW_OP_dup:
case dwarf::DW_OP_regx:
case dwarf::DW_OP_bregx:
+ case dwarf::DW_OP_implicit_pointer:
break;
}
}
Index: llvm/lib/IR/IntrinsicInst.cpp
===================================================================
--- llvm/lib/IR/IntrinsicInst.cpp
+++ llvm/lib/IR/IntrinsicInst.cpp
@@ -41,6 +41,9 @@
if (AllowNullOp && !Op)
return nullptr;
+ if (isImplicitPointer())
+ return Op;
+
auto *MD = cast<MetadataAsValue>(Op)->getMetadata();
if (auto *V = dyn_cast<ValueAsMetadata>(MD))
return V->getValue();
Index: llvm/lib/IR/Verifier.cpp
===================================================================
--- llvm/lib/IR/Verifier.cpp
+++ llvm/lib/IR/Verifier.cpp
@@ -4919,8 +4919,9 @@
void Verifier::visitDbgIntrinsic(StringRef Kind, DbgVariableIntrinsic &DII) {
auto *MD = cast<MetadataAsValue>(DII.getArgOperand(0))->getMetadata();
AssertDI(isa<ValueAsMetadata>(MD) ||
- (isa<MDNode>(MD) && !cast<MDNode>(MD)->getNumOperands()),
- "invalid llvm.dbg." + Kind + " intrinsic address/value", &DII, MD);
+ (isa<MDNode>(MD) && !cast<MDNode>(MD)->getNumOperands()) ||
+ DII.isImplicitPointer(),
+ "invalid llvm.dbg." + Kind + " intrinsic address/value", &DII, MD);
AssertDI(isa<DILocalVariable>(DII.getRawVariable()),
"invalid llvm.dbg." + Kind + " intrinsic variable", &DII,
DII.getRawVariable());
Index: llvm/test/DebugInfo/Inputs/dwarfdump-implicit_pointer_instcomb.c
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/Inputs/dwarfdump-implicit_pointer_instcomb.c
@@ -0,0 +1,15 @@
+volatile int gvar = 7;
+
+int func(int *ptr) {
+ gvar = *ptr;
+ return *ptr + 5;
+}
+
+int main() {
+ int var = 4;
+ int *ptrVar = &var;
+
+ int res = func(ptrVar);
+
+ return res;
+}
Index: llvm/test/DebugInfo/Inputs/dwarfdump-implicit_pointer_mem2reg.c
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/Inputs/dwarfdump-implicit_pointer_mem2reg.c
@@ -0,0 +1,24 @@
+static const char *b = "opq";
+volatile int v;
+int main() {
+ int var1 = 4;
+ int var2 = 5;
+ int arr1[2] = {2, 3};
+ int *ptr1;
+ int *ptr2 = 0;
+ int *ptr3;
+ int **ptrptr1;
+ int **ptrptr2 = 0;
+ int **ptrptr3;
+
+ v++;
+ ptr1 = &var1;
+ ptr2 = &var2;
+ ptr3 = arr1;
+ ptrptr1 = &ptr1;
+ ptrptr2 = &ptr2;
+ ptrptr3 = &ptr3;
+ v++;
+
+ return arr1[0] + arr1[1] + *ptr1 + *ptr2 + **ptrptr1 + **ptrptr2 - 5;
+}
Index: llvm/test/DebugInfo/Inputs/dwarfdump-implicit_pointer_sroa.c
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/Inputs/dwarfdump-implicit_pointer_sroa.c
@@ -0,0 +1,24 @@
+static const char *b = "opq";
+volatile int v;
+int main() {
+ int arr1[2] = {1, 2};
+ int arr2[2] = {6, 7};
+ int *ptr1 = 0;
+ int *ptr2;
+ int *ptr3 = 0;
+
+ v++;
+ ptr1 = arr1;
+ ptr2 = arr2;
+ ptr3 = arr1;
+ (*ptr1)++;
+ (*ptr2)++;
+ (*ptr3)++;
+ v++;
+ ptr1++;
+ (*ptr1)++;
+ (*ptr2)++;
+ (*ptr3)++;
+ v++;
+ return arr1[0] + arr1[1] + arr2[0] + arr2[1] - 5;
+}
Index: llvm/test/DebugInfo/Inputs/dwarfdump-implicit_pointer_sroa_inline.c
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/Inputs/dwarfdump-implicit_pointer_sroa_inline.c
@@ -0,0 +1,16 @@
+static const char *b = "opq";
+volatile int v;
+static inline void foo(int *ptr) {
+ (*ptr)++;
+ v++;
+ ptr++;
+ (*ptr)++;
+ v++;
+}
+
+int main() {
+ int arr[2] = {1, 2};
+ v++;
+ foo(arr);
+ return arr[0] + arr[1] - 5;
+}
Index: llvm/test/DebugInfo/dwarfdump-implicit_pointer_instcomb.ll
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/dwarfdump-implicit_pointer_instcomb.ll
@@ -0,0 +1,89 @@
+; RUN: llc %s -O2 -filetype=obj -o %t.o
+; RUN: llvm-dwarfdump %t.o | FileCheck %s
+
+; CHECK-LABEL: DW_AT_name ("var")
+; CHECK-LABEL: DW_TAG_variable
+; CHECK-NEXT: DW_AT_location
+; CHECK-NEXT: DW_OP_implicit_pointer [[DIE:0x.+]] +0
+
+; CHECK-LABEL: DW_TAG_formal_parameter
+; CHECK-NEXT: DW_AT_location
+; CHECK-NEXT: DW_OP_implicit_pointer [[DIE]] +0
+; CHECK-NEXT: "ptr"
+
+; ModuleID = 'dwarfdump-implicit_pointer_instcomb.c'
+source_filename = "dwarfdump-implicit_pointer_instcomb.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@gvar = dso_local global i32 7, align 4, !dbg !0
+
+; Function Attrs: nofree norecurse nounwind uwtable
+define dso_local i32 @func(i32* nocapture readonly %ptr) local_unnamed_addr #0 !dbg !12 {
+entry:
+ call void @llvm.dbg.value(metadata i32* %ptr, metadata !17, metadata !DIExpression()), !dbg !18
+ %0 = load i32, i32* %ptr, align 4, !dbg !19
+ store volatile i32 %0, i32* @gvar, align 4, !dbg !24
+ %1 = load i32, i32* %ptr, align 4, !dbg !25
+ %add = add nsw i32 %1, 5, !dbg !26
+ ret i32 %add, !dbg !27
+}
+
+; Function Attrs: nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #1 !dbg !28 {
+entry:
+ call void @llvm.dbg.value(metadata i32 4, metadata !32, metadata !DIExpression()), !dbg !35
+ call void @llvm.dbg.value(metadata !32, metadata !33, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !35
+ call void @llvm.dbg.value(metadata !32, metadata !17, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !36
+ store volatile i32 4, i32* @gvar, align 4, !dbg !38
+ call void @llvm.dbg.value(metadata i32 9, metadata !34, metadata !DIExpression()), !dbg !35
+ ret i32 9, !dbg !39
+}
+
+; Function Attrs: nounwind readnone speculatable willreturn
+declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+!llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!8, !9, !10}
+!llvm.ident = !{!11}
+
+!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
+!1 = distinct !DIGlobalVariable(name: "gvar", scope: !2, file: !3, line: 14, type: !6, isLocal: false, isDefinition: true)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
+!3 = !DIFile(filename: "dwarfdump-implicit_pointer_instcomb.c", directory: "/dir", checksumkind: CSK_MD5, checksum: "1c991e568deb5a6321b60bc8bf8be8d6")
+!4 = !{}
+!5 = !{!0}
+!6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
+!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!8 = !{i32 2, !"Dwarf Version", i32 5}
+!9 = !{i32 2, !"Debug Info Version", i32 3}
+!10 = !{i32 1, !"wchar_size", i32 4}
+!11 = !{!"clang version 10.0.0"}
+!12 = distinct !DISubprogram(name: "func", scope: !3, file: !3, line: 16, type: !13, scopeLine: 16, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !16)
+!13 = !DISubroutineType(types: !14)
+!14 = !{!7, !15}
+!15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
+!16 = !{!17}
+!17 = !DILocalVariable(name: "ptr", arg: 1, scope: !12, file: !3, line: 16, type: !15)
+!18 = !DILocation(line: 0, scope: !12)
+!19 = !DILocation(line: 17, column: 10, scope: !12)
+!20 = !{!21, !21, i64 0}
+!21 = !{!"int", !22, i64 0}
+!22 = !{!"omnipotent char", !23, i64 0}
+!23 = !{!"Simple C/C++ TBAA"}
+!24 = !DILocation(line: 17, column: 8, scope: !12)
+!25 = !DILocation(line: 18, column: 10, scope: !12)
+!26 = !DILocation(line: 18, column: 15, scope: !12)
+!27 = !DILocation(line: 18, column: 3, scope: !12)
+!28 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 21, type: !29, scopeLine: 21, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !31)
+!29 = !DISubroutineType(types: !30)
+!30 = !{!7}
+!31 = !{!32, !33, !34}
+!32 = !DILocalVariable(name: "var", scope: !28, file: !3, line: 22, type: !7)
+!33 = !DILocalVariable(name: "ptrVar", scope: !28, file: !3, line: 23, type: !15)
+!34 = !DILocalVariable(name: "res", scope: !28, file: !3, line: 25, type: !7)
+!35 = !DILocation(line: 0, scope: !28)
+!36 = !DILocation(line: 0, scope: !12, inlinedAt: !37)
+!37 = distinct !DILocation(line: 25, column: 13, scope: !28)
+!38 = !DILocation(line: 17, column: 8, scope: !12, inlinedAt: !37)
+!39 = !DILocation(line: 27, column: 3, scope: !28)
Index: llvm/test/DebugInfo/dwarfdump-implicit_pointer_mem2reg.ll
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/dwarfdump-implicit_pointer_mem2reg.ll
@@ -0,0 +1,119 @@
+; RUN: llc %s -O2 -filetype=obj -o %t.o
+; RUN: llvm-dwarfdump %t.o | FileCheck %s
+
+; CHECK-LABEL: DW_AT_name ("arr1")
+
+; 1. Test if more than one member location list is printed
+; (for pointer to scalar)
+; CHECK-LABEL: DW_AT_location (
+; CHECK-NEXT: : DW_OP_lit0, DW_OP_stack_value
+; CHECK-NEXT: : DW_OP_implicit_pointer {{0x.+}} +0
+; CHECK-NEXT: DW_AT_name ("ptr2")
+
+; 2. Test if More than one member location list is printed
+; (for pointer to pointer to scalar)
+; CHECK-LABEL: DW_AT_location (
+; CHECK-NEXT: : DW_OP_lit0, DW_OP_stack_value
+; CHECK-NEXT: : DW_OP_implicit_pointer {{0x.+}} +0
+; CHECK-NEXT: DW_AT_name ("ptrptr2")
+
+; 3. Test if one member location list is printed
+; (for pointer to pointer to array)
+; CHECK-LABEL: DW_AT_location (
+; CHECK-NEXT: : DW_OP_implicit_pointer {{0x.+}} +0
+; CHECK-NEXT: DW_AT_name ("ptrptr3")
+;
+; 4. Test if one member location list is printed
+; (for pointer to pointer to scalar)
+; CHECK-LABEL: DW_AT_location (
+; CHECK-NEXT: : DW_OP_implicit_pointer {{0x.+}} +0
+; CHECK-NEXT: DW_AT_name ("ptrptr1")
+
+; 5. Test if one member location list is printed
+; (for pointer to array)
+; CHECK-LABEL: DW_AT_location (
+; CHECK-NEXT: : DW_OP_implicit_pointer {{0x.+}} +0
+; CHECK-NEXT: DW_AT_name ("ptr3")
+
+; 6. Test if one member location list is printed
+; (for pointer to scalar)
+; CHECK-LABEL: DW_AT_location (
+; CHECK-NEXT: : DW_OP_implicit_pointer {{0x.+}} +0
+; CHECK-NEXT: DW_AT_name ("ptr1")
+
+; ModuleID = 'dwarfdump-implicit_pointer_mem2reg.c'
+source_filename = "dwarfdump-implicit_pointer_mem2reg.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@v = common dso_local global i32 0, align 4, !dbg !0
+
+; Function Attrs: nofree norecurse nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 !dbg !12 {
+entry:
+ call void @llvm.dbg.value(metadata i32 4, metadata !16, metadata !DIExpression()), !dbg !30
+ call void @llvm.dbg.value(metadata i32 5, metadata !17, metadata !DIExpression()), !dbg !30
+ call void @llvm.dbg.value(metadata i32 2, metadata !18, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !30
+ call void @llvm.dbg.value(metadata i32 3, metadata !18, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg !30
+ call void @llvm.dbg.value(metadata i32* null, metadata !24, metadata !DIExpression()), !dbg !30
+ call void @llvm.dbg.value(metadata i32** null, metadata !28, metadata !DIExpression()), !dbg !30
+ %0 = load volatile i32, i32* @v, align 4, !dbg !31
+ %inc = add nsw i32 %0, 1, !dbg !31
+ store volatile i32 %inc, i32* @v, align 4, !dbg !31
+ call void @llvm.dbg.value(metadata !16, metadata !22, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !30
+ call void @llvm.dbg.value(metadata !17, metadata !24, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !30
+ call void @llvm.dbg.value(metadata !18, metadata !25, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !30
+ call void @llvm.dbg.value(metadata !22, metadata !26, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !30
+ call void @llvm.dbg.value(metadata !24, metadata !28, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !30
+ call void @llvm.dbg.value(metadata !25, metadata !29, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !30
+ %1 = load volatile i32, i32* @v, align 4, !dbg !36
+ %inc1 = add nsw i32 %1, 1, !dbg !36
+ store volatile i32 %inc1, i32* @v, align 4, !dbg !36
+ ret i32 18, !dbg !37
+}
+
+; Function Attrs: nounwind readnone speculatable willreturn
+declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+!llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!8, !9, !10}
+!llvm.ident = !{!11}
+
+!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
+!1 = distinct !DIGlobalVariable(name: "v", scope: !2, file: !3, line: 45, type: !6, isLocal: false, isDefinition: true)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
+!3 = !DIFile(filename: "dwarfdump-implicit_pointer_mem2reg.c", directory: "/dir", checksumkind: CSK_MD5, checksum: "6ad1488ed7a007c3a33e08ec42847d87")
+!4 = !{}
+!5 = !{!0}
+!6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
+!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!8 = !{i32 2, !"Dwarf Version", i32 5}
+!9 = !{i32 2, !"Debug Info Version", i32 3}
+!10 = !{i32 1, !"wchar_size", i32 4}
+!11 = !{!"clang version 10.0.0"}
+!12 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 46, type: !13, scopeLine: 46, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !15)
+!13 = !DISubroutineType(types: !14)
+!14 = !{!7}
+!15 = !{!16, !17, !18, !22, !24, !25, !26, !28, !29}
+!16 = !DILocalVariable(name: "var1", scope: !12, file: !3, line: 47, type: !7)
+!17 = !DILocalVariable(name: "var2", scope: !12, file: !3, line: 48, type: !7)
+!18 = !DILocalVariable(name: "arr1", scope: !12, file: !3, line: 49, type: !19)
+!19 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 64, elements: !20)
+!20 = !{!21}
+!21 = !DISubrange(count: 2)
+!22 = !DILocalVariable(name: "ptr1", scope: !12, file: !3, line: 50, type: !23)
+!23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
+!24 = !DILocalVariable(name: "ptr2", scope: !12, file: !3, line: 51, type: !23)
+!25 = !DILocalVariable(name: "ptr3", scope: !12, file: !3, line: 52, type: !23)
+!26 = !DILocalVariable(name: "ptrptr1", scope: !12, file: !3, line: 53, type: !27)
+!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !23, size: 64)
+!28 = !DILocalVariable(name: "ptrptr2", scope: !12, file: !3, line: 54, type: !27)
+!29 = !DILocalVariable(name: "ptrptr3", scope: !12, file: !3, line: 55, type: !27)
+!30 = !DILocation(line: 0, scope: !12)
+!31 = !DILocation(line: 57, column: 4, scope: !12)
+!32 = !{!33, !33, i64 0}
+!33 = !{!"int", !34, i64 0}
+!34 = !{!"omnipotent char", !35, i64 0}
+!35 = !{!"Simple C/C++ TBAA"}
+!36 = !DILocation(line: 64, column: 4, scope: !12)
+!37 = !DILocation(line: 66, column: 3, scope: !12)
Index: llvm/test/DebugInfo/dwarfdump-implicit_pointer_sroa.ll
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/dwarfdump-implicit_pointer_sroa.ll
@@ -0,0 +1,102 @@
+; RUN: llc %s -O2 -filetype=obj -o %t.o
+; RUN: llvm-dwarfdump %t.o | FileCheck %s
+
+; CHECK-LABEL: DW_AT_name ("arr2")
+
+; 1. Test if more than 2 member location list is printed (for pointer pointing to aggregate)
+; CHECK-LABEL: DW_AT_location (
+; CHECK-NEXT: : DW_OP_lit0, DW_OP_stack_value
+; CHECK-NEXT: : DW_OP_implicit_pointer [[DIE:0x.+]] +0
+; CHECK-NEXT: : DW_OP_implicit_pointer [[DIE]] +4)
+; CHECK-NEXT: DW_AT_name ("ptr1")
+
+; 2. Test if location lists are merged to two (for pointer pointing to aggregate)
+; CHECK-LABEL: DW_AT_location (
+; CHECK-NEXT: : DW_OP_lit0, DW_OP_stack_value
+; CHECK-NEXT: : DW_OP_implicit_pointer [[DIE]] +0
+; CHECK-NEXT: DW_AT_name ("ptr3")
+
+; 3. Test if one member location list is not omited (for pointer pointing to aggregate)
+; CHECK-LABEL: DW_AT_location (
+; CHECK-NEXT: : DW_OP_implicit_pointer {{0x.+}} +0
+; CHECK-NEXT: DW_AT_name ("ptr2")
+
+; ModuleID = 'dwarfdump-implicit_pointer_sroa.c'
+source_filename = "dwarfdump-implicit_pointer_sroa.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@v = common dso_local global i32 0, align 4, !dbg !0
+
+; Function Attrs: nofree norecurse nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 !dbg !12 {
+entry:
+ call void @llvm.dbg.value(metadata i32 1, metadata !16, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !25
+ call void @llvm.dbg.value(metadata i32 2, metadata !16, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg !25
+ call void @llvm.dbg.value(metadata i32 6, metadata !20, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !25
+ call void @llvm.dbg.value(metadata i32 7, metadata !20, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg !25
+ call void @llvm.dbg.value(metadata i32* null, metadata !21, metadata !DIExpression()), !dbg !25
+ call void @llvm.dbg.value(metadata i32* null, metadata !24, metadata !DIExpression()), !dbg !25
+ %0 = load volatile i32, i32* @v, align 4, !dbg !26
+ %inc = add nsw i32 %0, 1, !dbg !26
+ store volatile i32 %inc, i32* @v, align 4, !dbg !26
+ call void @llvm.dbg.value(metadata !16, metadata !21, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !25
+ call void @llvm.dbg.value(metadata !20, metadata !23, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !25
+ call void @llvm.dbg.value(metadata !16, metadata !24, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !25
+ call void @llvm.dbg.value(metadata i32 2, metadata !16, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !25
+ call void @llvm.dbg.value(metadata i32 7, metadata !20, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !25
+ call void @llvm.dbg.value(metadata i32 3, metadata !16, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !25
+ %1 = load volatile i32, i32* @v, align 4, !dbg !31
+ %inc6 = add nsw i32 %1, 1, !dbg !31
+ store volatile i32 %inc6, i32* @v, align 4, !dbg !31
+ call void @llvm.dbg.value(metadata !16, metadata !21, metadata !DIExpression(DW_OP_implicit_pointer, 4)), !dbg !25
+ call void @llvm.dbg.value(metadata i32 3, metadata !16, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg !25
+ call void @llvm.dbg.value(metadata i32 8, metadata !20, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !25
+ call void @llvm.dbg.value(metadata i32 4, metadata !16, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !25
+ %2 = load volatile i32, i32* @v, align 4, !dbg !32
+ %inc10 = add nsw i32 %2, 1, !dbg !32
+ store volatile i32 %inc10, i32* @v, align 4, !dbg !32
+ ret i32 17, !dbg !33
+}
+
+; Function Attrs: nounwind readnone speculatable willreturn
+declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+!llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!8, !9, !10}
+!llvm.ident = !{!11}
+
+!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
+!1 = distinct !DIGlobalVariable(name: "v", scope: !2, file: !3, line: 25, type: !6, isLocal: false, isDefinition: true)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
+!3 = !DIFile(filename: "dwarfdump-implicit_pointer_sroa.c", directory: "/dir", checksumkind: CSK_MD5, checksum: "955d25ccee581cfd1dc4cfad0d994e8f")
+!4 = !{}
+!5 = !{!0}
+!6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
+!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!8 = !{i32 2, !"Dwarf Version", i32 5}
+!9 = !{i32 2, !"Debug Info Version", i32 3}
+!10 = !{i32 1, !"wchar_size", i32 4}
+!11 = !{!"clang version 10.0.0"}
+!12 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 26, type: !13, scopeLine: 26, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !15)
+!13 = !DISubroutineType(types: !14)
+!14 = !{!7}
+!15 = !{!16, !20, !21, !23, !24}
+!16 = !DILocalVariable(name: "arr1", scope: !12, file: !3, line: 27, type: !17)
+!17 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 64, elements: !18)
+!18 = !{!19}
+!19 = !DISubrange(count: 2)
+!20 = !DILocalVariable(name: "arr2", scope: !12, file: !3, line: 28, type: !17)
+!21 = !DILocalVariable(name: "ptr1", scope: !12, file: !3, line: 29, type: !22)
+!22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
+!23 = !DILocalVariable(name: "ptr2", scope: !12, file: !3, line: 30, type: !22)
+!24 = !DILocalVariable(name: "ptr3", scope: !12, file: !3, line: 31, type: !22)
+!25 = !DILocation(line: 0, scope: !12)
+!26 = !DILocation(line: 33, column: 4, scope: !12)
+!27 = !{!28, !28, i64 0}
+!28 = !{!"int", !29, i64 0}
+!29 = !{!"omnipotent char", !30, i64 0}
+!30 = !{!"Simple C/C++ TBAA"}
+!31 = !DILocation(line: 40, column: 4, scope: !12)
+!32 = !DILocation(line: 45, column: 4, scope: !12)
+!33 = !DILocation(line: 46, column: 3, scope: !12)
Index: llvm/test/DebugInfo/dwarfdump-implicit_pointer_sroa_inline.ll
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/dwarfdump-implicit_pointer_sroa_inline.ll
@@ -0,0 +1,79 @@
+; RUN: llc %s -O2 -filetype=obj -o %t.o
+; RUN: llvm-dwarfdump %t.o | FileCheck %s
+
+; CHECK: DW_TAG_inlined_subroutine
+
+; Test if More than 2 member location list is printed (for pointer pointing to aggregate)
+; CHECK: DW_TAG_formal_parameter
+; CHECK-NEXT: DW_AT_location
+; CHECK-NEXT: : DW_OP_implicit_pointer [[DIE:0x.+]] +0
+; CHECK-NEXT: : DW_OP_implicit_pointer [[DIE]] +4)
+; CHECK-NEXT: DW_AT_abstract_origin ({{0x.+}} "ptr")
+
+; ModuleID = 'dwarfdump-implicit_pointer_sroa_inline.c'
+source_filename = "dwarfdump-implicit_pointer_sroa_inline.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@v = common dso_local global i32 0, align 4, !dbg !0
+
+; Function Attrs: nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 !dbg !12 {
+entry:
+ %0 = load volatile i32, i32* @v, align 4, !dbg !20
+ %inc = add nsw i32 %0, 1, !dbg !20
+ store volatile i32 %inc, i32* @v, align 4, !dbg !20
+ call void @llvm.dbg.value(metadata !16, metadata !25, metadata !DIExpression(DW_OP_implicit_pointer, 0)), !dbg !31
+ %1 = load volatile i32, i32* @v, align 4, !dbg !33
+ %inc1.i = add nsw i32 %1, 1, !dbg !33
+ store volatile i32 %inc1.i, i32* @v, align 4, !dbg !33
+ call void @llvm.dbg.value(metadata !16, metadata !25, metadata !DIExpression(DW_OP_implicit_pointer, 4)), !dbg !31
+ %2 = load volatile i32, i32* @v, align 4, !dbg !34
+ %inc3.i = add nsw i32 %2, 1, !dbg !34
+ store volatile i32 %inc3.i, i32* @v, align 4, !dbg !34
+ ret i32 0, !dbg !35
+}
+
+; Function Attrs: nounwind readnone speculatable willreturn
+declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+!llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!8, !9, !10}
+!llvm.ident = !{!11}
+
+!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
+!1 = distinct !DIGlobalVariable(name: "v", scope: !2, file: !3, line: 14, type: !6, isLocal: false, isDefinition: true)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
+!3 = !DIFile(filename: "dwarfdump-implicit_pointer_sroa_inline.c", directory: "/dir", checksumkind: CSK_MD5, checksum: "f9bbaee6b152b3bc05125796b573408a")
+!4 = !{}
+!5 = !{!0}
+!6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
+!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!8 = !{i32 2, !"Dwarf Version", i32 5}
+!9 = !{i32 2, !"Debug Info Version", i32 3}
+!10 = !{i32 1, !"wchar_size", i32 4}
+!11 = !{!"clang version 10.0.0"}
+!12 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 23, type: !13, scopeLine: 23, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !15)
+!13 = !DISubroutineType(types: !14)
+!14 = !{!7}
+!15 = !{!16}
+!16 = !DILocalVariable(name: "arr", scope: !12, file: !3, line: 24, type: !17)
+!17 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 64, elements: !18)
+!18 = !{!19}
+!19 = !DISubrange(count: 2)
+!20 = !DILocation(line: 25, column: 4, scope: !12)
+!21 = !{!22, !22, i64 0}
+!22 = !{!"int", !23, i64 0}
+!23 = !{!"omnipotent char", !24, i64 0}
+!24 = !{!"Simple C/C++ TBAA"}
+!25 = !DILocalVariable(name: "ptr", arg: 1, scope: !26, file: !3, line: 15, type: !29)
+!26 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 15, type: !27, scopeLine: 15, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !30)
+!27 = !DISubroutineType(types: !28)
+!28 = !{null, !29}
+!29 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
+!30 = !{!25}
+!31 = !DILocation(line: 0, scope: !26, inlinedAt: !32)
+!32 = distinct !DILocation(line: 26, column: 3, scope: !12)
+!33 = !DILocation(line: 17, column: 4, scope: !26, inlinedAt: !32)
+!34 = !DILocation(line: 20, column: 4, scope: !26, inlinedAt: !32)
+!35 = !DILocation(line: 27, column: 3, scope: !12)