[X86] Enable commuting of VUNPCKHPD to VMOVLHPS to enable load folding by using VMOVLPS with a modified address.

This required an annoying amount of tablegen multiclass changes to make only VUNPCKHPDZ128rr commutable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337357 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed