[all-commits] [llvm/llvm-project] dd33cf: Revert "[CodeGenPrepare] Convert `ctpop(X) ==/!= 1...

[Yingwei Zheng via All-commits]

  Branch: refs/heads/revert-111284-perf/is-power2-nonzero
  Home:   https://github.com/llvm/llvm-project
  Commit: dd33cf3e728cd72c760fb46687bac670fe8098c2
      https://github.com/llvm/llvm-project/commit/dd33cf3e728cd72c760fb46687bac670fe8098c2
  Author: Yingwei Zheng <dtcxzyw at qq.com>
  Date:   2024-10-11 (Fri, 11 Oct 2024)

  Changed paths:
    M llvm/lib/CodeGen/CodeGenPrepare.cpp
    M llvm/test/CodeGen/AArch64/arm64-popcnt.ll
    M llvm/test/CodeGen/RISCV/rv32zbb.ll
    M llvm/test/CodeGen/RISCV/rv64zbb.ll
    M llvm/test/CodeGen/X86/ispow2.ll
    M llvm/test/CodeGen/X86/known-never-zero.ll

  Log Message:
  -----------
  Revert "[CodeGenPrepare] Convert `ctpop(X) ==/!= 1` into `ctpop(X) u</u> 2/1`…"

This reverts commit e3894f58e1a534c57f53b3beb21d6b2f0d3382b2.



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