Bring llvm.annotation* intrinsics support back to where it was in llvm-gcc: can
annotate global, local variables, struct fields, or arbitrary statements (using
the __builtin_annotation), rdar://8037476.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139423 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenFunction.cpp b/lib/CodeGen/CodeGenFunction.cpp
index a16f10e..b4b2eb1 100644
--- a/lib/CodeGen/CodeGenFunction.cpp
+++ b/lib/CodeGen/CodeGenFunction.cpp
@@ -1018,3 +1018,50 @@
// 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;
+}