Remove the language parameter and variable from the compile unit. We
can get it via the MDNode that's passed in. Save that instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189291 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 600e233..6d1f5af 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -696,9 +696,8 @@
   CompilationDir = DIUnit.getDirectory();
 
   DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
-  CompileUnit *NewCU = new CompileUnit(GlobalCUIndexCount++,
-                                       DIUnit.getLanguage(), Die, N, Asm,
-                                       this, &InfoHolder);
+  CompileUnit *NewCU =
+      new CompileUnit(GlobalCUIndexCount++, Die, N, Asm, this, &InfoHolder);
 
   FileIDCUMap[NewCU->getUniqueID()] = 0;
   // Call this to emit a .file directive if it wasn't emitted for the source
@@ -2691,9 +2690,8 @@
   CompilationDir = DIUnit.getDirectory();
 
   DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
-  CompileUnit *NewCU = new CompileUnit(GlobalCUIndexCount++,
-                                       DIUnit.getLanguage(), Die, N, Asm,
-                                       this, &SkeletonHolder);
+  CompileUnit *NewCU =
+      new CompileUnit(GlobalCUIndexCount++, Die, N, Asm, this, &SkeletonHolder);
 
   NewCU->addLocalString(Die, dwarf::DW_AT_GNU_dwo_name,
                         DIUnit.getSplitDebugFilename());