[PATCH] D62818: [InstCombine] Fix fold order for icmp pred (and (sh X, Y), C), 0.

[Huihui Zhang via Phabricator via llvm-commits]

huihuiz updated this revision to Diff 203284.
huihuiz retitled this revision from "[InstCombine] Change order of ICmp fold." to "[InstCombine] Fix fold order for icmp pred (and (sh X, Y),  C), 0.".
huihuiz edited the summary of this revision.
huihuiz added a comment.

Test cases in icmp-shift-and-signbit.ll shows the updated fold order can generate better IR.


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/icmp-shift-and-signbit.ll
  test/Transforms/InstCombine/pr17827.ll

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