Add test case for the regression caused by r344696

(That change has since been reverted.)

Reduced from https://bugs.freedesktop.org/show_bug.cgi?id=108611

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@346423 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed