[PATCH] D89415: [AArch64][GlobalISel] Introduce a new post-isel optimization pass

[Amara Emerson via Phabricator via llvm-commits]

aemerson planned changes to this revision.
aemerson added a comment.

Actually, this may interfere with the generic Peephole optimizations from doing their job around flag setting optimizations. I think the main issue here is that we're generating SUBS with a WZR physreg, which prevents the peepholes from working. I'll make a separate patch for that and re-purpose this review for the flag compare->select dedupe optimization.


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  https://reviews.llvm.org/D89415/new/

https://reviews.llvm.org/D89415