Emit a .ident saying that clang produced this file.

Patch by Katya Romanova.

llvm-svn: 192832

1 files changed, 15 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 17bca0a6f38..7682efc752e 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -35,6 +35,7 @@
 #include "clang/Basic/Module.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/TargetInfo.h"
+#include "clang/Basic/Version.h"
 #include "clang/Frontend/CodeGenOptions.h"
 #include "llvm/ADT/APSInt.h"
 #include "llvm/ADT/Triple.h"
@@ -204,6 +205,8 @@ void CodeGenModule::Release() {
 
   if (DebugInfo)
     DebugInfo->finalize();
+
+  EmitVersionIdentMetadata();
 }
 
 void CodeGenModule::UpdateCompletedType(const TagDecl *TD) {
@@ -3034,6 +3037,18 @@ void CodeGenFunction::EmitDeclMetadata() {
   }
 }
 
+void CodeGenModule::EmitVersionIdentMetadata() {
+  llvm::NamedMDNode *IdentMetadata =
+    TheModule.getOrInsertNamedMetadata("llvm.ident");
+  std::string Version = getClangFullVersion();
+  llvm::LLVMContext &Ctx = TheModule.getContext();
+
+  llvm::Value *IdentNode[] = {
+    llvm::MDString::get(Ctx, Version)
+  };
+  IdentMetadata->addOperand(llvm::MDNode::get(Ctx, IdentNode));
+}
+
 void CodeGenModule::EmitCoverageFile() {
   if (!getCodeGenOpts().CoverageFile.empty()) {
     if (llvm::NamedMDNode *CUNode = TheModule.getNamedMetadata("llvm.dbg.cu")) {