Adding new test for

bug fix 316067 https://bugs.llvm.org/show_bug.cgi?id=34978

This test checks that the x86-interleaved ends without any
assertion.

Change-Id: I1e970482a4d0404516cbc85517fc091bb21c35a8

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316080 91177308-0d34-0410-b5e6-96231b3b80d8