Emit the DWARF tag for the RenderScript language

Summary:
If the RenderScript LangOpt is set, either via '-x renderscript' or the '.rs'
file extension, set the DWARF language tag to be that of RenderScript.

Reviewers: rsmith

Subscribers: cfe-commits, srhines

Differential Revision: http://reviews.llvm.org/D21451

llvm-svn: 273321

clang/lib/CodeGen/CGDebugInfo.cpp

@@ -377,6 +377,8 @@ void CGDebugInfo::CreateCompileUnit() {
       LangTag = llvm::dwarf::DW_LANG_C_plus_plus;
   } else if (LO.ObjC1) {
     LangTag = llvm::dwarf::DW_LANG_ObjC;
+  } else if (LO.RenderScript) {
+    LangTag = llvm::dwarf::DW_LANG_GOOGLE_RenderScript;
   } else if (LO.C99) {
     LangTag = llvm::dwarf::DW_LANG_C99;
   } else {

clang/test/CodeGen/debug-info-renderscript-tag.rs

@@ -0,0 +1,3 @@
+// RUN: %clang -emit-llvm -S -g %s -o - | FileCheck %s
+
+// CHECK: !DICompileUnit(language: DW_LANG_GOOGLE_RenderScript{{.*}})