[PATCH] D49861: [X86] Improved sched models for X86 XCHG*rr instructions

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

I think this needs mca test coverage first.

  llvm/test/tools/llvm-mca/X86$ grep -ri XCHG | wc -l
  0


https://reviews.llvm.org/D49861