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.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@240971 91177308-0d34-0410-b5e6-96231b3b80d8