Recommit "[SystemZ] Do not emit VEXTEND or VROUND nodes without vector support."

It seems there were some problem with using a .mir test. For some reason
doing '-stop-before=codegenprepare' and then '-start-before=codegenprepare'
on the output .mir file results in the NoVRegs Property after instruction
selection.

Recommitting the same test as an .ll file instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354160 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed