[all-commits] [llvm/llvm-project] b8cdc2: [DAG] visitCTPOP - if only the upper half of the c...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b8cdc2638e4c067fd633b345aba75fee81c4054f
      https://github.com/llvm/llvm-project/commit/b8cdc2638e4c067fd633b345aba75fee81c4054f
  Author: Simon Pilgrim <RKSimon at users.noreply.github.com>
  Date:   2024-02-06 (Tue, 06 Feb 2024)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/AMDGPU/ctpop64.ll
    M llvm/test/CodeGen/X86/ctpop-mask.ll

  Log Message:
  -----------
  [DAG] visitCTPOP - if only the upper half of the ctpop operand is zero then see if its profitable to only count the lower half. (#80473)