[PATCH] D62818: [InstCombine] Introduce fold for icmp pred (and X, (sh signbit, Y)), 0.

[Huihui Zhang via Phabricator via llvm-commits]

huihuiz updated this revision to Diff 204436.
huihuiz added a comment.

Original test cases are added in D63025 <https://reviews.llvm.org/D63025> . Hopefully would be good coverage :)
D63026 <https://reviews.llvm.org/D63026> fix fold order issue
this differential introduce new fold for icmp pred (and X, (sh signbit, Y)), 0


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D62818/new/

https://reviews.llvm.org/D62818

Files:
  lib/Transforms/InstCombine/InstCombineCompares.cpp
  test/Transforms/InstCombine/signbit-lshr-and-icmpeq-zero.ll
  test/Transforms/InstCombine/signbit-shl-and-icmpeq-zero.ll

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