AST: Move __va_list tag back to std conditionally on AArch64.

[pcc]

Summary

In post-commit feedback on D104830 Jessica Clarke pointed out that
unconditionally adding va_list to the std namespace caused namespace
debug info to be emitted in C, which is not only inappropriate but
turned out to confuse the dtrace tool. Therefore, move va_list back
to std only in C++ so that the correct debug info is generated. We
also considered moving __va_list to the top level unconditionally
but this would contradict the specification and be visible to AST
matchers and such, so make it conditional on the language mode.

To avoid breaking name mangling for __va_list, teach the Itanium
name mangler to always mangle it as if it were in the std namespace
when targeting ARM architectures. This logic is not needed for the
Microsoft name mangler because Microsoft platforms define va_list as
a typedef of char *.

Depends on D116773

[jrtc27]

The fact that va_list is in the std namespace does leak out into __builtin_dump_struct, possibly the odd other place, and of course to external AST consumers.

I think it'd make sense to keep ASTContext as putting it in the std namespace for C++ (like it does for Arm, and used to for AArch64) but also have ItaniumMangle override it to the std namespace so that non-C++ gets the right mangling? Otherwise the AST and __builtin_dump_struct won't match the Arm spec.

[pcc]

I'm not aware of any of those places causing an actual problem though? The AST isn't a stable interface, and builtin_dump_struct is for debugging purposes only. I would expect debug info consumers to be able to handle va_list in the global namespace as this is the status quo for C.

So I'm somewhat inclined to do the simple thing here first, and then look at making things more conditional if a problem comes up.

[aaron.ballman]

In D116774#3227280, @jrtc27 wrote:

The fact that va_list is in the std namespace does leak out into __builtin_dump_struct, possibly the odd other place, and of course to external AST consumers.

It can also leak out in funny places like AST dumping (to text, but more interestingly, to JSON). But the one place that may be observable and really matters (that I can think of) are AST matchers that get used by clang-tidy.

I think it'd make sense to keep ASTContext as putting it in the std namespace for C++ (like it does for Arm, and used to for AArch64) but also have ItaniumMangle override it to the std namespace so that non-C++ gets the right mangling? Otherwise the AST and __builtin_dump_struct won't match the Arm spec.

I think this could make some sense. We typically try to have the AST reflect the reality of the program, and from that perspective, I think I would expect there to be a std namespace component for this in the AST if the spec calls for one even when obtaining the type through stdarg.h instead of cstdarg.

[jrtc27]

Ping?

[jrtc27]

Ping? I'd really like to get this fixed in 14.

[pcc]

Make it conditional

[jrtc27]

clang/lib/AST/ItaniumMangle.cpp

640

Could use isAArch64 (which then also picks up aarch64_32)

641

Could use isARM. Does this also need to care about isThumb, or has that been normalised to Arm with a T32 subarch?

[pcc]

Use isARM() etc

[pcc]

[jrtc27]

Thanks, looks good to me

[aaron.ballman]

Only a small nit from me.

clang/lib/AST/ASTContext.cpp

8555–8556

[jrtc27]

clang/lib/AST/ASTContext.cpp

8555–8556

Hm, the advantage of leaving it as it is is then it completely reverts D104830 (ignoring the added CFI test) rather than being written in a slightly different but equivalent way. Don't really care either way myself though, both have their merits.

[aaron.ballman]

clang/lib/AST/ASTContext.cpp

8555–8556

I don't insist on the change; I mostly found it odd to have an uninitialized local that is initialized on the very next line.

[pcc]

clang/lib/AST/ASTContext.cpp

 static TypedefDecl *CreateVoidPtrBuiltinVaListDecl(const ASTContext *Context) {
   // typedef void* __builtin_va_list;
   QualType T = Context->getPointerType(Context->VoidTy);
   return Context->buildImplicitTypedef(T, "__builtin_va_list");
 }
 
 static TypedefDecl *
 CreateAArch64ABIBuiltinVaListDecl(const ASTContext *Context) {
+  // struct __va_list
   RecordDecl *VaListTagDecl = Context->buildImplicitRecord("__va_list");
+  if (Context->getLangOpts().CPlusPlus) {
     // namespace std { struct __va_list {
-  // Note that we create the namespace even in C. This is intentional so that
-  // the type is consistent between C and C++, which is important in cases where
-  // the types need to match between translation units (e.g. with
-  // -fsanitize=cfi-icall). Ideally we wouldn't have created this namespace at
-  // all, but it's now part of the ABI (e.g. in mangled names), so we can't
-  // change it.
     auto *NS = NamespaceDecl::Create(
         const_cast<ASTContext &>(*Context), Context->getTranslationUnitDecl(),
         /*Inline*/ false, SourceLocation(), SourceLocation(),
         &Context->Idents.get("std"),
         /*PrevDecl*/ nullptr);
     NS->setImplicit();
     VaListTagDecl->setDeclContext(NS);
+  }
 
   VaListTagDecl->startDefinition();
 
   const size_t NumFields = 5;
   QualType FieldTypes[NumFields];
   const char *FieldNames[NumFields];
 
   // void *__stack;

clang/lib/AST/ItaniumMangle.cpp

 
 static const unsigned UnknownArity = ~0U;
 
 class ItaniumMangleContextImpl : public ItaniumMangleContext {
   typedef std::pair<const DeclContext*, IdentifierInfo*> DiscriminatorKeyTy;
   llvm::DenseMap<DiscriminatorKeyTy, unsigned> Discriminator;
   llvm::DenseMap<const NamedDecl*, unsigned> Uniquifier;
   const DiscriminatorOverrideTy DiscriminatorOverride = nullptr;
+  NamespaceDecl *StdNamespace = nullptr;
 
   bool NeedsUniqueInternalLinkageNames = false;
 
 public:
   explicit ItaniumMangleContextImpl(
       ASTContext &Context, DiagnosticsEngine &Diags,
       DiscriminatorOverrideTy DiscriminatorOverride)
       : ItaniumMangleContext(Context, Diags),
std::string getLambdaString(const CXXRecordDecl *Lambda) override {
     Name += '>';
     return Name;
   }
 
   DiscriminatorOverrideTy getDiscriminatorOverride() const override {
     return DiscriminatorOverride;
   }
 
+  NamespaceDecl *getStdNamespace();
+
   const DeclContext *getEffectiveDeclContext(const Decl *D);
   const DeclContext *getEffectiveParentContext(const DeclContext *DC) {
     return getEffectiveDeclContext(cast<Decl>(DC));
   }
 
   bool isInternalLinkageDecl(const NamedDecl *ND);
   const DeclContext *IgnoreLinkageSpecDecls(const DeclContext *DC);
 
#include "clang/AST/TypeNodes.inc"
   // Returns sorted unique list of ABI tags.
   AbiTagList makeFunctionReturnTypeTags(const FunctionDecl *FD);
   // Returns sorted unique list of ABI tags.
   AbiTagList makeVariableTypeTags(const VarDecl *VD);
 };
 
 }
 
+NamespaceDecl *ItaniumMangleContextImpl::getStdNamespace() {
+  if (!StdNamespace) {
+    StdNamespace = NamespaceDecl::Create(
+        getASTContext(), getASTContext().getTranslationUnitDecl(),
+        /*Inline*/ false, SourceLocation(), SourceLocation(),
+        &getASTContext().Idents.get("std"),
+        /*PrevDecl*/ nullptr);
+    StdNamespace->setImplicit();
+  }
+  return StdNamespace;
+}
+
 /// Retrieve the declaration context that should be used when mangling the given
 /// declaration.
 const DeclContext *
 ItaniumMangleContextImpl::getEffectiveDeclContext(const Decl *D) {
   // The ABI assumes that lambda closure types that occur within
   // default arguments live in the context of the function. However, due to
   // the way in which Clang parses and creates function declarations, this is
   // not the case: the lambda closure type ends up living in the context
   // where the function itself resides, because the function declaration itself
   // had not yet been created. Fix the context here.
   if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) {
     if (RD->isLambda())
       if (ParmVarDecl *ContextParam =
               dyn_cast_or_null<ParmVarDecl>(RD->getLambdaContextDecl()))
         return ContextParam->getDeclContext();
   }
 
   // Perform the same check for block literals.
   if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
     if (ParmVarDecl *ContextParam =
             dyn_cast_or_null<ParmVarDecl>(BD->getBlockManglingContextDecl()))
       return ContextParam->getDeclContext();
   }
 
+  // On ARM and AArch64, the va_list tag is always mangled as if in the std
+  // namespace. We do not represent va_list as actually being in the std
+  // namespace in C because this would result in incorrect debug info in C,
+  // among other things. It is important for both languages to have the same
+  // mangling in order for -fsanitize=cfi-icall to work.
+  if (D == getASTContext().getVaListTagDecl()) {
+    const llvm::Triple &T = getASTContext().getTargetInfo().getTriple();
+    if (T.isARM() || T.isThumb() || T.isAArch64())
+      return getStdNamespace();
+  }
+
   const DeclContext *DC = D->getDeclContext();
   if (isa<CapturedDecl>(DC) || isa<OMPDeclareReductionDecl>(DC) ||
       isa<OMPDeclareMapperDecl>(DC)) {
     return getEffectiveDeclContext(cast<Decl>(DC));
   }
 
   if (const auto *VD = dyn_cast<VarDecl>(D))
     if (VD->isExternC())

clang/test/CodeGen/aarch64-varargs.c

 // RUN: %clang_cc1 -triple arm64-linux-gnu -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-LE %s
 // RUN: %clang_cc1 -triple aarch64_be-linux-gnu -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-BE %s
 
 #include <stdarg.h>
 
 // Obviously there's more than one way to implement va_arg. This test should at
 // least prevent unintentional regressions caused by refactoring.
 
 va_list the_list;
 
 int simple_int(void) {
 // CHECK-LABEL: define{{.*}} i32 @simple_int
   return va_arg(the_list, int);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK-BE: [[REG_ADDR_ALIGNED:%[0-9]+]] = getelementptr inbounds i8, i8* [[REG_ADDR]], i64 4
 // CHECK-BE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR_ALIGNED]] to i32*
 // CHECK-LE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i32*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK-BE: [[STACK_ALIGNED:%[a-z_0-9]*]] = getelementptr inbounds i8, i8* [[STACK]], i64 4
 // CHECK-BE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK_ALIGNED]] to i32*
 // CHECK-LE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to i32*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi i32* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: [[RESULT:%[a-z_0-9]+]] = load i32, i32* [[ADDR]]
 // CHECK: ret i32 [[RESULT]]
 }
 
 __int128 aligned_int(void) {
 // CHECK-LABEL: define{{.*}} i128 @aligned_int
   return va_arg(the_list, __int128);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[ALIGN_REGOFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 15
 // CHECK: [[ALIGNED_REGOFFS:%[a-z_0-9]+]] = and i32 [[ALIGN_REGOFFS]], -16
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[ALIGNED_REGOFFS]], 16
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[ALIGNED_REGOFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i128*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[STACKINT:%[a-z_0-9]+]] = ptrtoint i8* [[STACK]] to i64
 // CHECK: [[ALIGN_STACK:%[a-z_0-9]+]] = add i64 [[STACKINT]], 15
 // CHECK: [[ALIGNED_STACK_INT:%[a-z_0-9]+]] = and i64 [[ALIGN_STACK]], -16
 // CHECK: [[ALIGNED_STACK_PTR:%[a-z_0-9]+]] = inttoptr i64 [[ALIGNED_STACK_INT]] to i8*
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[ALIGNED_STACK_PTR]], i64 16
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[ALIGNED_STACK_PTR]] to i128*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi i128* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: [[RESULT:%[a-z_0-9]+]] = load i128, i128* [[ADDR]]
 // CHECK: ret i128 [[RESULT]]
 }
 
 struct bigstruct {
   int a[10];
 };
 
 struct bigstruct simple_indirect(void) {
 // CHECK-LABEL: define{{.*}} void @simple_indirect
   return va_arg(the_list, struct bigstruct);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK-NOT: and i32
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.bigstruct**
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK-NOT: and i64
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.bigstruct**
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.bigstruct** [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: load %struct.bigstruct*, %struct.bigstruct** [[ADDR]]
 }
 
 struct aligned_bigstruct {
   float a;
   long double b;
 };
 
 struct aligned_bigstruct simple_aligned_indirect(void) {
 // CHECK-LABEL: define{{.*}} void @simple_aligned_indirect
   return va_arg(the_list, struct aligned_bigstruct);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.aligned_bigstruct**
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.aligned_bigstruct**
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.aligned_bigstruct** [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: load %struct.aligned_bigstruct*, %struct.aligned_bigstruct** [[ADDR]]
 }
 
 double simple_double(void) {
 // CHECK-LABEL: define{{.*}} double @simple_double
   return va_arg(the_list, double);
-// CHECK: [[VR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 4)
+// CHECK: [[VR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 4)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[VR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[VR_OFFS]], 16
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 4)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 4)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 2)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 2)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[VR_OFFS]]
 // CHECK-BE: [[REG_ADDR_ALIGNED:%[a-z_0-9]*]] = getelementptr inbounds i8, i8* [[REG_ADDR]], i64 8
 // CHECK-BE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR_ALIGNED]] to double*
 // CHECK-LE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to double*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to double*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi double* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: [[RESULT:%[a-z_0-9]+]] = load double, double* [[ADDR]]
 // CHECK: ret double [[RESULT]]
 }
 
 struct hfa {
   float a, b;
 };
 
 struct hfa simple_hfa(void) {
 // CHECK-LABEL: define{{.*}} %struct.hfa @simple_hfa
   return va_arg(the_list, struct hfa);
-// CHECK: [[VR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 4)
+// CHECK: [[VR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 4)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[VR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[VR_OFFS]], 32
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 4)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 4)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 2)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 2)
 // CHECK: [[FIRST_REG:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[VR_OFFS]]
 // CHECK-LE: [[EL_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[FIRST_REG]], i64 0
 // CHECK-BE: [[EL_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[FIRST_REG]], i64 12
 // CHECK: [[EL_TYPED:%[a-z_0-9]+]] = bitcast i8* [[EL_ADDR]] to float*
 // CHECK: [[EL_TMPADDR:%[a-z_0-9]+]] = getelementptr inbounds [2 x float], [2 x float]* %[[TMP_HFA:[a-z_.0-9]+]], i64 0, i64 0
 // CHECK: [[EL:%[a-z_0-9]+]] = load float, float* [[EL_TYPED]]
 // CHECK: store float [[EL]], float* [[EL_TMPADDR]]
 // CHECK-LE: [[EL_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[FIRST_REG]], i64 16
 // CHECK-BE: [[EL_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[FIRST_REG]], i64 28
 // CHECK: [[EL_TYPED:%[a-z_0-9]+]] = bitcast i8* [[EL_ADDR]] to float*
 // CHECK: [[EL_TMPADDR:%[a-z_0-9]+]] = getelementptr inbounds [2 x float], [2 x float]* %[[TMP_HFA]], i64 0, i64 1
 // CHECK: [[EL:%[a-z_0-9]+]] = load float, float* [[EL_TYPED]]
 // CHECK: store float [[EL]], float* [[EL_TMPADDR]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast [2 x float]* %[[TMP_HFA]] to %struct.hfa*
 // CHECK: br label %[[VAARG_END:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.hfa*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.hfa* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 // Over and under alignment on fundamental types has no effect on parameter
 // passing, so the code generated for va_arg should be the same as for
 // non-aligned fundamental types.
 
 typedef int underaligned_int __attribute__((packed,aligned(2)));
 underaligned_int underaligned_int_test(void) {
 // CHECK-LABEL: define{{.*}} i32 @underaligned_int_test()
   return va_arg(the_list, underaligned_int);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK-BE: [[REG_ADDR_ALIGNED:%[0-9]+]] = getelementptr inbounds i8, i8* [[REG_ADDR]], i64 4
 // CHECK-BE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR_ALIGNED]] to i32*
 // CHECK-LE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i32*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK-BE: [[STACK_ALIGNED:%[a-z_0-9]*]] = getelementptr inbounds i8, i8* [[STACK]], i64 4
 // CHECK-BE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK_ALIGNED]] to i32*
 // CHECK-LE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to i32*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi i32* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: [[RESULT:%[a-z_0-9]+]] = load i32, i32* [[ADDR]]
 // CHECK: ret i32 [[RESULT]]
 }
 
 typedef int overaligned_int __attribute__((aligned(32)));
 overaligned_int overaligned_int_test(void) {
 // CHECK-LABEL: define{{.*}} i32 @overaligned_int_test()
   return va_arg(the_list, overaligned_int);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK-BE: [[REG_ADDR_ALIGNED:%[0-9]+]] = getelementptr inbounds i8, i8* [[REG_ADDR]], i64 4
 // CHECK-BE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR_ALIGNED]] to i32*
 // CHECK-LE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i32*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK-BE: [[STACK_ALIGNED:%[a-z_0-9]*]] = getelementptr inbounds i8, i8* [[STACK]], i64 4
 // CHECK-BE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK_ALIGNED]] to i32*
 // CHECK-LE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to i32*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi i32* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: [[RESULT:%[a-z_0-9]+]] = load i32, i32* [[ADDR]]
 // CHECK: ret i32 [[RESULT]]
 }
 
 typedef long long underaligned_long_long  __attribute__((packed,aligned(2)));
 underaligned_long_long underaligned_long_long_test(void) {
 // CHECK-LABEL: define{{.*}} i64 @underaligned_long_long_test()
   return va_arg(the_list, underaligned_long_long);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i64*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to i64*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi i64* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: [[RESULT:%[a-z_0-9]+]] = load i64, i64* [[ADDR]]
 // CHECK: ret i64 [[RESULT]]
 }
 
 typedef long long overaligned_long_long  __attribute__((aligned(32)));
 overaligned_long_long overaligned_long_long_test(void) {
 // CHECK-LABEL: define{{.*}} i64 @overaligned_long_long_test()
   return va_arg(the_list, overaligned_long_long);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i64*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to i64*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi i64* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: [[RESULT:%[a-z_0-9]+]] = load i64, i64* [[ADDR]]
 // CHECK: ret i64 [[RESULT]]
 }
 
 typedef __int128 underaligned_int128  __attribute__((packed,aligned(2)));
 underaligned_int128 underaligned_int128_test(void) {
 // CHECK-LABEL: define{{.*}} i128 @underaligned_int128_test()
   return va_arg(the_list, underaligned_int128);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[ALIGN_REGOFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 15
 // CHECK: [[ALIGNED_REGOFFS:%[a-z_0-9]+]] = and i32 [[ALIGN_REGOFFS]], -16
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[ALIGNED_REGOFFS]], 16
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[ALIGNED_REGOFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i128*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[STACKINT:%[a-z_0-9]+]] = ptrtoint i8* [[STACK]] to i64
 // CHECK: [[ALIGN_STACK:%[a-z_0-9]+]] = add i64 [[STACKINT]], 15
 // CHECK: [[ALIGNED_STACK_INT:%[a-z_0-9]+]] = and i64 [[ALIGN_STACK]], -16
 // CHECK: [[ALIGNED_STACK_PTR:%[a-z_0-9]+]] = inttoptr i64 [[ALIGNED_STACK_INT]] to i8*
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[ALIGNED_STACK_PTR]], i64 16
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[ALIGNED_STACK_PTR]] to i128*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi i128* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: [[RESULT:%[a-z_0-9]+]] = load i128, i128* [[ADDR]]
 // CHECK: ret i128 [[RESULT]]
 }
 
 typedef __int128 overaligned_int128  __attribute__((aligned(32)));
 overaligned_int128 overaligned_int128_test(void) {
 // CHECK-LABEL: define{{.*}} i128 @overaligned_int128_test()
   return va_arg(the_list, overaligned_int128);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[ALIGN_REGOFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 15
 // CHECK: [[ALIGNED_REGOFFS:%[a-z_0-9]+]] = and i32 [[ALIGN_REGOFFS]], -16
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[ALIGNED_REGOFFS]], 16
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[ALIGNED_REGOFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i128*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[STACKINT:%[a-z_0-9]+]] = ptrtoint i8* [[STACK]] to i64
 // CHECK: [[ALIGN_STACK:%[a-z_0-9]+]] = add i64 [[STACKINT]], 15
 // CHECK: [[ALIGNED_STACK_INT:%[a-z_0-9]+]] = and i64 [[ALIGN_STACK]], -16
 // CHECK: [[ALIGNED_STACK_PTR:%[a-z_0-9]+]] = inttoptr i64 [[ALIGNED_STACK_INT]] to i8*
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[ALIGNED_STACK_PTR]], i64 16
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[ALIGNED_STACK_PTR]] to i128*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi i128* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 // CHECK: [[RESULT:%[a-z_0-9]+]] = load i128, i128* [[ADDR]]
 // CHECK: ret i128 [[RESULT]]
 }

 
 typedef struct __attribute__((packed,aligned(2))) {
   int val;
 } underaligned_int_struct;
 underaligned_int_struct underaligned_int_struct_test(void) {
 // CHECK-LE-LABEL: define{{.*}} i32 @underaligned_int_struct_test()
 // CHECK-BE-LABEL: define{{.*}} i64 @underaligned_int_struct_test()
   return va_arg(the_list, underaligned_int_struct);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_int_struct*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_int_struct*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_int_struct* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 typedef struct __attribute__((aligned(16))) {
   int val;
 } overaligned_int_struct;
 overaligned_int_struct overaligned_int_struct_test(void) {
 // CHECK-LABEL: define{{.*}} i128 @overaligned_int_struct_test()
   return va_arg(the_list, overaligned_int_struct);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 16
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_int_struct*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 16
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.overaligned_int_struct*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_int_struct* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 typedef struct __attribute__((packed,aligned(2))) {
   long long val;
 } underaligned_long_long_struct;
 underaligned_long_long_struct underaligned_long_long_struct_test(void) {
 // CHECK-LABEL: define{{.*}} i64 @underaligned_long_long_struct_test()
   return va_arg(the_list, underaligned_long_long_struct);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_long_long_struct*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_long_long_struct*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_long_long_struct* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 typedef struct __attribute__((aligned(16))) {
   long long val;
 } overaligned_long_long_struct;
 overaligned_long_long_struct overaligned_long_long_struct_test(void) {
 // CHECK-LABEL: define{{.*}} i128 @overaligned_long_long_struct_test()
   return va_arg(the_list, overaligned_long_long_struct);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 16
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_long_long_struct*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 16
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.overaligned_long_long_struct*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_long_long_struct* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 typedef struct __attribute__((packed,aligned(2))) {
   __int128 val;
 } underaligned_int128_struct;
 underaligned_int128_struct underaligned_int128_struct_test(void) {
 // CHECK-LABEL: define{{.*}} [2 x i64] @underaligned_int128_struct_test()
   return va_arg(the_list, underaligned_int128_struct);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 16
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_int128_struct*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 16
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_int128_struct*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_int128_struct* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 // Overaligning to 32 bytes causes it to be passed indirectly via a pointer
 typedef struct __attribute__((aligned(32))) {
   __int128 val;
 } overaligned_int128_struct;
 overaligned_int128_struct overaligned_int128_struct_test(void) {
 // CHECK-LABEL: define{{.*}} void @overaligned_int128_struct_test(%struct.overaligned_int128_struct* noalias sret(%struct.overaligned_int128_struct) align 32 %agg.result)
   return va_arg(the_list, overaligned_int128_struct);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_int128_struct**
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.overaligned_int128_struct**
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_int128_struct** [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 // Overaligning or underaligning a struct member changes both its alignment and
 // size when passed as an argument.
 
 typedef struct {
   int val __attribute__((packed,aligned(2)));
 } underaligned_int_struct_member;
 underaligned_int_struct_member underaligned_int_struct_member_test(void) {
 // CHECK-LE-LABEL: define{{.*}} i32 @underaligned_int_struct_member_test()
 // CHECK-BE-LABEL: define{{.*}} i64 @underaligned_int_struct_member_test()
   return va_arg(the_list, underaligned_int_struct_member);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_int_struct_member*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_int_struct_member*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_int_struct_member* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 typedef struct {
   int val __attribute__((aligned(16)));
 } overaligned_int_struct_member;
 overaligned_int_struct_member overaligned_int_struct_member_test(void) {
 // CHECK-LABEL: define{{.*}} i128 @overaligned_int_struct_member_test()
   return va_arg(the_list, overaligned_int_struct_member);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[ALIGN_REGOFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 15
 // CHECK: [[ALIGNED_REGOFFS:%[a-z_0-9]+]] = and i32 [[ALIGN_REGOFFS]], -16
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[ALIGNED_REGOFFS]], 16
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[ALIGNED_REGOFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_int_struct_member*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[STACKINT:%[a-z_0-9]+]] = ptrtoint i8* [[STACK]] to i64
 // CHECK: [[ALIGN_STACK:%[a-z_0-9]+]] = add i64 [[STACKINT]], 15
 // CHECK: [[ALIGNED_STACK_INT:%[a-z_0-9]+]] = and i64 [[ALIGN_STACK]], -16
 // CHECK: [[ALIGNED_STACK_PTR:%[a-z_0-9]+]] = inttoptr i64 [[ALIGNED_STACK_INT]] to i8*
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[ALIGNED_STACK_PTR]], i64 16
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[ALIGNED_STACK_PTR]] to %struct.overaligned_int_struct_member*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_int_struct_member* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 typedef struct {
   long long val __attribute__((packed,aligned(2)));
 } underaligned_long_long_struct_member;
 underaligned_long_long_struct_member underaligned_long_long_struct_member_test(void) {
 // CHECK-LABEL: define{{.*}} i64 @underaligned_long_long_struct_member_test()
   return va_arg(the_list, underaligned_long_long_struct_member);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_long_long_struct_member*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_long_long_struct_member*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_long_long_struct_member* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 typedef struct {
   long long val __attribute__((aligned(16)));
 } overaligned_long_long_struct_member;
 overaligned_long_long_struct_member overaligned_long_long_struct_member_test(void) {
 // CHECK-LABEL: define{{.*}} i128 @overaligned_long_long_struct_member_test()
   return va_arg(the_list, overaligned_long_long_struct_member);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[ALIGN_REGOFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 15
 // CHECK: [[ALIGNED_REGOFFS:%[a-z_0-9]+]] = and i32 [[ALIGN_REGOFFS]], -16
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[ALIGNED_REGOFFS]], 16
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[ALIGNED_REGOFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_long_long_struct_member*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[STACKINT:%[a-z_0-9]+]] = ptrtoint i8* [[STACK]] to i64
 // CHECK: [[ALIGN_STACK:%[a-z_0-9]+]] = add i64 [[STACKINT]], 15
 // CHECK: [[ALIGNED_STACK_INT:%[a-z_0-9]+]] = and i64 [[ALIGN_STACK]], -16
 // CHECK: [[ALIGNED_STACK_PTR:%[a-z_0-9]+]] = inttoptr i64 [[ALIGNED_STACK_INT]] to i8*
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[ALIGNED_STACK_PTR]], i64 16
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[ALIGNED_STACK_PTR]] to %struct.overaligned_long_long_struct_member*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_long_long_struct_member* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 typedef struct {
   __int128 val __attribute__((packed,aligned(2)));
 } underaligned_int128_struct_member;
 underaligned_int128_struct_member underaligned_int128_struct_member_test(void) {
 // CHECK-LABEL: define{{.*}} [2 x i64] @underaligned_int128_struct_member_test()
   return va_arg(the_list, underaligned_int128_struct_member);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 16
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_int128_struct_member*
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 16
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_int128_struct_member*
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_int128_struct_member* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 // Overaligning to 32 bytes causes it to be passed indirectly via a pointer
 typedef struct {
   __int128 val __attribute__((aligned(32)));
 } overaligned_int128_struct_member;
 overaligned_int128_struct_member overaligned_int128_struct_member_test(void) {
 // CHECK-LABEL: define{{.*}} void @overaligned_int128_struct_member_test(%struct.overaligned_int128_struct_member* noalias sret(%struct.overaligned_int128_struct_member) align 32 %agg.result)
   return va_arg(the_list, overaligned_int128_struct_member);
-// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
 // CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
 
 // CHECK: [[VAARG_MAYBE_REG]]
 // CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
-// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
+// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 3)
 // CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
 // CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
 
 // CHECK: [[VAARG_IN_REG]]
-// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
+// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 1)
 // CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
 // CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_int128_struct_member**
 // CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
 
 // CHECK: [[VAARG_ON_STACK]]
-// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
-// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
+// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%struct.__va_list, %struct.__va_list* @the_list, i32 0, i32 0)
 // CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.overaligned_int128_struct_member**
 // CHECK: br label %[[VAARG_END]]
 
 // CHECK: [[VAARG_END]]
 // CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_int128_struct_member** [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
 }
 
 void check_start(int n, ...) {
 // CHECK-LABEL: define{{.*}} void @check_start(i32 noundef %n, ...)
 
   va_list the_list;
   va_start(the_list, n);
-// CHECK: [[THE_LIST:%[a-z_0-9]+]] = alloca %"struct.std::__va_list"
-// CHECK: [[VOIDP_THE_LIST:%[a-z_0-9]+]] = bitcast %"struct.std::__va_list"* [[THE_LIST]] to i8*
+// CHECK: [[THE_LIST:%[a-z_0-9]+]] = alloca %struct.__va_list
+// CHECK: [[VOIDP_THE_LIST:%[a-z_0-9]+]] = bitcast %struct.__va_list* [[THE_LIST]] to i8*
 // CHECK: call void @llvm.va_start(i8* [[VOIDP_THE_LIST]])
 }
 
 

clang/test/CodeGen/arm64-be-hfa-vararg.c

 // RUN:  %clang_cc1 -triple aarch64_be-linux-gnu -ffreestanding -emit-llvm -O0 -o - %s | FileCheck %s
 
 #include <stdarg.h>
 
 // A single member HFA must be aligned just like a non-HFA register argument.
 double callee(int a, ...) {
-// CHECK: [[REGPP:%.*]] = getelementptr inbounds %"struct.std::__va_list", %"struct.std::__va_list"* [[VA:%.*]], i32 0, i32 2
+// CHECK: [[REGPP:%.*]] = getelementptr inbounds %struct.__va_list, %struct.__va_list* [[VA:%.*]], i32 0, i32 2
 // CHECK: [[REGP:%.*]] = load i8*, i8** [[REGPP]], align 8
 // CHECK: [[OFFSET0:%.*]] = getelementptr inbounds i8, i8* [[REGP]], i32 {{.*}}
 // CHECK: [[OFFSET1:%.*]] = getelementptr inbounds i8, i8* [[OFFSET0]], i64 8
 
-// CHECK: [[MEMPP:%.*]] = getelementptr inbounds %"struct.std::__va_list", %"struct.std::__va_list"* [[VA:%.*]], i32 0, i32 0
+// CHECK: [[MEMPP:%.*]] = getelementptr inbounds %struct.__va_list, %struct.__va_list* [[VA:%.*]], i32 0, i32 0
 // CHECK: [[MEMP:%.*]] = load i8*, i8** [[MEMPP]], align 8
 // CHECK: [[NEXTP:%.*]] = getelementptr inbounds i8, i8* [[MEMP]], i64 8
 // CHECK: store i8* [[NEXTP]], i8** [[MEMPP]], align 8
   va_list vl;
   va_start(vl, a);
   double result = va_arg(vl, struct { double a; }).a;
   va_end(vl);
   return result;
 }

clang/test/Headers/stdarg.cpp

 // RUN: %clang_cc1 -emit-llvm -std=c++17 -x c++ %s -triple s390x-linux -o - | FileCheck %s --check-prefix=SYSTEMZ-CXX
 // RUN: %clang_cc1 -emit-llvm -std=c99 -x c %s -triple i686-linux -o - | FileCheck %s --check-prefix=CHARPTR-C
 // RUN: %clang_cc1 -emit-llvm -std=c++17 -x c++ %s -triple i686-linux -o - | FileCheck %s --check-prefix=CHARPTR-CXX
 // RUN: %clang_cc1 -emit-llvm -std=c99 -x c %s -triple xcore -o - | FileCheck %s --check-prefix=VOIDPTR-C
 // RUN: %clang_cc1 -emit-llvm -std=c++17 -x c++ %s -triple xcore -o - | FileCheck %s --check-prefix=VOIDPTR-CXX
 
 #include <stdarg.h>
 
-// AARCH64-C: define {{.*}} @f(i32 noundef %n, %"struct.std::__va_list"* noundef %list)
+// AARCH64-C: define {{.*}} @f(i32 noundef %n, %struct.__va_list* noundef %list)
 // AARCH64-CXX: define {{.*}} @_Z1fiSt9__va_list(i32 noundef %n, %"struct.std::__va_list"* noundef %list)
 // X86_64-C: define {{.*}} @f(i32 noundef %n, %struct.__va_list_tag* noundef %list)
 // X86_64-CXX: define {{.*}} @_Z1fiP13__va_list_tag(i32 noundef %n, %struct.__va_list_tag* noundef %list)
 // PPC64-C: define {{.*}} @f(i32 noundef signext %n, i8* noundef %list)
 // PPC64-CXX: define {{.*}} @_Z1fiPc(i32 noundef signext %n, i8* noundef %list)
 // AAPCS-C: define {{.*}} @f(i32 noundef %n, [1 x i32] %list.coerce)
 // AAPCS-CXX: define {{.*}} @_Z1fiSt9__va_list(i32 noundef %n, [1 x i32] %list.coerce)
 // SYSTEMZ-C: define {{.*}} @f(i32 noundef signext %n, %struct.__va_list_tag* noundef %list)
 // SYSTEMZ-CXX: define {{.*}} @_Z1fiP13__va_list_tag(i32 noundef signext %n, %struct.__va_list_tag* noundef %list)
 // CHARPTR-C: define {{.*}} @f(i32 noundef %n, i8* noundef %list)
 // CHARPTR-CXX: define {{.*}} @_Z1fiPc(i32 noundef %n, i8* noundef %list)
 // VOIDPTR-C: define {{.*}} @f(i32 noundef %n, i8* noundef %list)
 // VOIDPTR-CXX: define {{.*}} @_Z1fiPv(i32 noundef %n, i8* noundef %list)
 void f(int n, va_list list) {}