Reorder language in the CompileUnit description and add a comment.

Language may only be a temporary addition.

llvm-svn: 195296
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 1774025..b636a5d 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -40,16 +40,16 @@
 /// CompileUnit - Compile unit constructor.
 CompileUnit::CompileUnit(unsigned UID, DIE *D, DICompileUnit Node,
                          AsmPrinter *A, DwarfDebug *DW, DwarfUnits *DWU)
-    : UniqueID(UID), Node(Node), CUDie(D), Asm(A), DD(DW), DU(DWU),
-      IndexTyDie(0), Language(Node.getLanguage()), DebugInfoOffset(0) {
+    : UniqueID(UID), Node(Node), Language(Node.getLanguage()), CUDie(D), Asm(A),
+      DD(DW), DU(DWU), IndexTyDie(0), DebugInfoOffset(0) {
   DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
   insertDIE(Node, D);
 }
 
 CompileUnit::CompileUnit(unsigned UID, DIE *D, uint16_t Language, AsmPrinter *A,
                          DwarfDebug *DD, DwarfUnits *DU)
-    : UniqueID(UID), Node(NULL), CUDie(D), Asm(A), DD(DD), DU(DU),
-      IndexTyDie(0), Language(Language), DebugInfoOffset(0) {
+    : UniqueID(UID), Node(NULL), Language(Language), CUDie(D), Asm(A), DD(DD),
+      DU(DU), IndexTyDie(0), DebugInfoOffset(0) {
   DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
 }