[X86][AVX] Added zero+blend vs vperm2f128 optsize tests cases (PR22984)

We should be trying to use vperm2f128 instead of zero+blend (if we're only the user of zero?) when optsize is enabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266632 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed