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Bring llvm.annotation* intrinsics support back to where it was in llvm-gcc: can

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annotate global, local variables, struct fields, or arbitrary statements (using
the __builtin_annotation), rdar://8037476.

llvm-svn: 139423
This commit is contained in:
Julien Lerouge
2011-09-09 22:41:49 +00:00
parent 5bfb0e0a85
commit 5a6b6987dc
21 changed files with 401 additions and 88 deletions
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47
clang/lib/CodeGen/CodeGenFunction.cpp
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@@ -1018,3 +1018,50 @@ void CodeGenFunction::unprotectFromPeepholes(PeepholeProtection protection) {
// In theory, we could try to duplicate the peepholes now, but whatever.
protection.Inst->eraseFromParent();
}
llvm::Value *CodeGenFunction::EmitAnnotationCall(llvm::Value *AnnotationFn,
llvm::Value *AnnotatedVal,
llvm::StringRef AnnotationStr,
SourceLocation Location) {
llvm::Value *Args[4] = {
AnnotatedVal,
Builder.CreateBitCast(CGM.EmitAnnotationString(AnnotationStr), Int8PtrTy),
Builder.CreateBitCast(CGM.EmitAnnotationUnit(Location), Int8PtrTy),
CGM.EmitAnnotationLineNo(Location)
};
return Builder.CreateCall(AnnotationFn, Args);
}
void CodeGenFunction::EmitVarAnnotations(const VarDecl *D, llvm::Value *V) {
assert(D->hasAttr<AnnotateAttr>() && "no annotate attribute");
// FIXME We create a new bitcast for every annotation because that's what
// llvm-gcc was doing.
for (specific_attr_iterator<AnnotateAttr>
ai = D->specific_attr_begin<AnnotateAttr>(),
ae = D->specific_attr_end<AnnotateAttr>(); ai != ae; ++ai)
EmitAnnotationCall(CGM.getIntrinsic(llvm::Intrinsic::var_annotation),
Builder.CreateBitCast(V, CGM.Int8PtrTy, V->getName()),
(*ai)->getAnnotation(), D->getLocation());
}
llvm::Value *CodeGenFunction::EmitFieldAnnotations(const FieldDecl *D,
llvm::Value *V) {
assert(D->hasAttr<AnnotateAttr>() && "no annotate attribute");
llvm::Type *VTy = V->getType();
llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::ptr_annotation,
CGM.Int8PtrTy);
for (specific_attr_iterator<AnnotateAttr>
ai = D->specific_attr_begin<AnnotateAttr>(),
ae = D->specific_attr_end<AnnotateAttr>(); ai != ae; ++ai) {
// FIXME Always emit the cast inst so we can differentiate between
// annotation on the first field of a struct and annotation on the struct
// itself.
if (VTy != CGM.Int8PtrTy)
V = Builder.Insert(new llvm::BitCastInst(V, CGM.Int8PtrTy));
V = EmitAnnotationCall(F, V, (*ai)->getAnnotation(), D->getLocation());
V = Builder.CreateBitCast(V, VTy);
}
return V;
}