[X86][SSE] Remove PSHUFLW/PSHUFHW combineRedundantHalfShuffle combine

This can be achieved more generally by combineX86ShufflesRecursively and was causing a fuzz test failure found by Mikael Holmén.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@342642 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed