[X86][SSE] Use lowerVectorShuffleWithUNPCK instead of custom matches.

Most 128-bit and 256-bit shuffles were manually matching UNPCK patterns - use lowerVectorShuffleWithUNPCK to be more thorough.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251211 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed