[X86] In X86FlagsCopyLowering, when rewriting a memory setcc we need to emit an explicit MOV8mr instruction.

Previously the code only knew how to handle setcc to a register.

This should fix a crash in the chromium build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@329771 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed