[PATCH] D45539: [InstCombine][NFC]: foldSelectICmpAndAnd(): and is commutative

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri created this revision.
lebedev.ri added reviewers: spatel, craig.topper.

The fold added in https://reviews.llvm.org/D45108 did not account for the fact that
the and instruction is commutative, and if the mask is a variable,
the mask variable and the fold variable may be swapped.

I have noticed this by accident when looking into PR6773 <https://bugs.llvm.org/show_bug.cgi?id=6773>

This extends/generalizes that fold, so it is handled too.


Repository:
  rL LLVM

https://reviews.llvm.org/D45539

Files:
  lib/Transforms/InstCombine/InstCombineSelect.cpp
  test/Transforms/InstCombine/select-of-bittest.ll

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