Parse 'ghccc' in .ll files as the GHC convention (cc 10)

Previously we just used "cc 10" in the .ll files, but that isn't very
human readable.

llvm-svn: 223076
diff --git a/llvm/test/Bitcode/calling-conventions.3.2.ll b/llvm/test/Bitcode/calling-conventions.3.2.ll
index f36e9f8..b60f1d7 100644
--- a/llvm/test/Bitcode/calling-conventions.3.2.ll
+++ b/llvm/test/Bitcode/calling-conventions.3.2.ll
@@ -15,7 +15,7 @@
 ; CHECK: declare coldcc void @coldcc
 
 declare cc10 void @cc10()
-; CHECK: declare cc10 void @cc10
+; CHECK: declare ghccc void @cc10
 
 declare spir_kernel void @spir_kernel()
 ; CHECK: declare spir_kernel void @spir_kernel
@@ -72,7 +72,7 @@
 }
 
 define void @call_cc10 () { 
-; CHECK: call cc10 void @cc10 
+; CHECK: call ghccc void @cc10
   call cc10 void @cc10 ()
   ret void
 }