[PATCH] D108165: [InstCombine] fold signed min/max intrinsics with negated operands
Roman Lebedev via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Aug 16 14:35:05 PDT 2021
lebedev.ri added a comment.
> adapt Negator to handle it
Hmm, thanks for the hint, i was looking for this fold for a while :)
Indeed, negator does not track NSW-ness. What we can do for the signed variant is:
https://alive2.llvm.org/ce/z/MXZXKp aka https://alive2.llvm.org/ce/z/VJwMwD
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https://reviews.llvm.org/D108165/new/
https://reviews.llvm.org/D108165
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