Address review comments: add 3 ARM calling conventions.
Dispatch C calling conv. to one of these conventions based on
target triple and subtarget features.

llvm-svn: 73530
diff --git a/llvm/lib/AsmParser/LLLexer.cpp b/llvm/lib/AsmParser/LLLexer.cpp
index c5190ef..b3f7cdb 100644
--- a/llvm/lib/AsmParser/LLLexer.cpp
+++ b/llvm/lib/AsmParser/LLLexer.cpp
@@ -526,6 +526,10 @@
   KEYWORD(coldcc);
   KEYWORD(x86_stdcallcc);
   KEYWORD(x86_fastcallcc);
+  KEYWORD(arm_apcscc);
+  KEYWORD(arm_aapcscc);
+  KEYWORD(arm_aapcs_vfpcc);
+
   KEYWORD(cc);
   KEYWORD(c);