[all-commits] [llvm/llvm-project] a3cffc: [InstCombine] Fold (ctpop(X) == 1) | (X == 0) into...

[Hirochika Matsumoto via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a3cffc11509bc178616069d26b1a8573199fde74
      https://github.com/llvm/llvm-project/commit/a3cffc11509bc178616069d26b1a8573199fde74
  Author: Hirochika Matsumoto <git at hkmatsumoto.com>
  Date:   2022-03-29 (Tue, 29 Mar 2022)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
    M llvm/test/Transforms/InstCombine/ispow2.ll

  Log Message:
  -----------
  [InstCombine] Fold (ctpop(X) == 1) | (X == 0) into ctpop(X) < 2

https://alive2.llvm.org/ce/z/94yRMN

Fixes #54177

Differential Revision: https://reviews.llvm.org/D122077