[PowerPC][NFC] Add tests for vector fp <-> int conversions

This NFC patch just adds test cases for conversions that currently
require scalarization of vectors. An updcoming patch will change
the legalization for these and it is more suitable on the review
to show the diferences in code gen rather than just the new code gen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@347090 91177308-0d34-0410-b5e6-96231b3b80d8
16 files changed