[all-commits] [llvm/llvm-project] 1f5393: [InstCombine] Remove foldAndOrOfEqualityCmpsWithCo...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1f53932a95f16f53980af40d092901ff3480e00c
      https://github.com/llvm/llvm-project/commit/1f53932a95f16f53980af40d092901ff3480e00c
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-04-29 (Fri, 29 Apr 2022)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
    M llvm/test/Transforms/InstCombine/and-or-icmps.ll

  Log Message:
  -----------
  [InstCombine] Remove foldAndOrOfEqualityCmpsWithConstants() fold

This fold handles a special subset of foldAndOrOfICmpsUsingRanges(),
use the more generic implementation instead.

The result can differ if a representation using a range comparison
is possible, in which case that is preferred over masking. There is
a canonicalization opportunity here.