[PATCH] D37885: [x86] Bring back the MOVZX64rr* pseudo instructions so that they can be coalesced using X86InstrInfo::isCoalescableExtInstr

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

I imagine it would be possible, but we'd also need a new target hook to indicate that MOV32rr is coalescable. It just seemed easier to use the existing stuff rather than implement a second way to do it.


https://reviews.llvm.org/D37885