Account for calling convention specifiers in function definitions in IR test cases

Several tests wouldn't pass when executed on an armv7a_pc_linux triple
due to the non-default arm_aapcs calling convention produced on the
function definitions in the IR output. Account for this with the
application of a little regex.

Patch by Ying Yi.

llvm-svn: 240971
diff --git a/clang/test/CodeGenCXX/PR5093-static-member-function.cpp b/clang/test/CodeGenCXX/PR5093-static-member-function.cpp
index d61a87a..6811351 100644
--- a/clang/test/CodeGenCXX/PR5093-static-member-function.cpp
+++ b/clang/test/CodeGenCXX/PR5093-static-member-function.cpp
@@ -4,6 +4,6 @@
 };
 
 void g(a *a) {
-  // CHECK: call void @_ZN1a1fEv()
+  // CHECK: call {{.*}}void @_ZN1a1fEv()
   a->f();
 }