Move the calling of emitTargetMD() later.

Summary:
Because a global created by GetOrCreateLLVMGlobal() is not finalised until later viz:
  extern char a[];
  char f(){ return a[5];}
  char a[10];

Change MangledDeclNames to use a MapVector rather than a DenseMap so that the
Metadata is output in order of original declaration, so to make deterministic
and improve human readablity.

Differential Revision: http://reviews.llvm.org/D4176

llvm-svn: 212263

clang/lib/CodeGen/CodeGenModule.cpp

@@ -393,6 +393,8 @@ void CodeGenModule::Release() {
     DebugInfo->finalize();
 
   EmitVersionIdentMetadata();
+
+  EmitTargetMetadata();
 }
 
 void CodeGenModule::UpdateCompletedType(const TagDecl *TD) {
@@ -1534,8 +1536,6 @@ CodeGenModule::GetOrCreateLLVMFunction(StringRef MangledName,
     }
   }
 
-  getTargetCodeGenInfo().emitTargetMD(D, F, *this);
-
   // Make sure the result is of the requested type.
   if (!IsIncompleteFunction) {
     assert(F->getType()->getElementType() == Ty);
@@ -1685,8 +1685,6 @@ CodeGenModule::GetOrCreateLLVMGlobal(StringRef MangledName,
   if (AddrSpace != Ty->getAddressSpace())
     return llvm::ConstantExpr::getAddrSpaceCast(GV, Ty);
 
-  getTargetCodeGenInfo().emitTargetMD(D, GV, *this);
-
   return GV;
 }
 
@@ -3340,6 +3338,14 @@ void CodeGenModule::EmitVersionIdentMetadata() {
   IdentMetadata->addOperand(llvm::MDNode::get(Ctx, IdentNode));
 }
 
+void CodeGenModule::EmitTargetMetadata() {
+  for (auto &I : MangledDeclNames) {
+    const Decl *D = I.first.getDecl()->getMostRecentDecl();
+    llvm::GlobalValue *GV = GetGlobalValue(I.second);
+    getTargetCodeGenInfo().emitTargetMD(D, GV, *this);
+  }
+}
+
 void CodeGenModule::EmitCoverageFile() {
   if (!getCodeGenOpts().CoverageFile.empty()) {
     if (llvm::NamedMDNode *CUNode = TheModule.getNamedMetadata("llvm.dbg.cu")) {