[all-commits] [llvm/llvm-project] ac9209: Revert "[DAGCombiner] Fold (mul (sra X, BW-1), Y) ...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ac9209751ad7f06c42b6ac80cf9c71b3c4bd238d
      https://github.com/llvm/llvm-project/commit/ac9209751ad7f06c42b6ac80cf9c71b3c4bd238d
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2022-10-11 (Tue, 11 Oct 2022)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/AArch64/umulo-128-legalisation-lowering.ll
    M llvm/test/CodeGen/AMDGPU/mad_64_32.ll
    M llvm/test/CodeGen/PowerPC/pr45448.ll
    M llvm/test/CodeGen/RISCV/mul.ll
    M llvm/test/CodeGen/RISCV/xaluo.ll
    M llvm/test/CodeGen/Thumb2/mve-vmull-splat.ll
    M llvm/test/CodeGen/X86/extmul128.ll
    M llvm/test/CodeGen/X86/muloti.ll
    M llvm/test/CodeGen/X86/smul_fix_sat.ll
    M llvm/test/CodeGen/X86/smulo-128-legalisation-lowering.ll
    M llvm/test/CodeGen/X86/vec_smulo.ll
    M llvm/test/CodeGen/X86/xmulo.ll

  Log Message:
  -----------
  Revert "[DAGCombiner] Fold (mul (sra X, BW-1), Y) -> (neg (and (sra X, BW-1), Y))"

This reverts commit 0148df8157f05ecf3b1064508e6f012aefb87dad.

Getting a lit test failures on AMDGPU but I can't reproduce it so far.
Reverting to investigate.