skip test if llvm-gcc is requires but not found on the path.
someone with llvm-gcc installed please test if the Codegen/function-attributes.c test isn't skip in your system. thanks.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55871 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed