[PATCH] D150388: [CodeGen]Allow targets to use target specific COPY instructions for live range splitting

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D150388#4504380 <https://reviews.llvm.org/D150388#4504380>, @vitalybuka wrote:

> It's still regression. Unless someone has a patch ready to land, we need to revert this.

I'd ask that you provide a reproducer, and perform the experiment I mentioned. If we can just disable the expanded isCopyInstr identification, it will be a lot less painful


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https://reviews.llvm.org/D150388