[PATCH] D92095: [DAG] Legalize abs(x) -> smax(x,sub(0,x)) iff smax/sub are legal

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri accepted this revision.
lebedev.ri added a comment.
This revision is now accepted and ready to land.

Actually, never mind. The current expansion is identically undef-unsafe, iff `ISD::ABS` is ever undef-producing/inducing:
https://alive2.llvm.org/ce/z/eJwDHC
https://alive2.llvm.org/ce/z/z6fGbG

So looks good to me.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D92095/new/

https://reviews.llvm.org/D92095