[all-commits] [llvm/llvm-project] ea2ee5: [DAG] Add legalization handling for AVGCEIL/AVGFLO...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ea2ee5dc2f14a17ff4486b41c9475c0b261412a4
      https://github.com/llvm/llvm-project/commit/ea2ee5dc2f14a17ff4486b41c9475c0b261412a4
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-06-12 (Wed, 12 Jun 2024)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetLowering.h
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
    M llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/AArch64/arm64-vhadd.ll
    M llvm/test/CodeGen/AArch64/avg.ll
    M llvm/test/CodeGen/AArch64/sve-hadd.ll
    M llvm/test/CodeGen/Thumb2/mve-laneinterleaving.ll
    M llvm/test/CodeGen/X86/avg.ll
    M llvm/test/CodeGen/X86/avgceils.ll
    M llvm/test/CodeGen/X86/avgceilu.ll
    M llvm/test/CodeGen/X86/avgfloors.ll
    M llvm/test/CodeGen/X86/avgflooru.ll
    M llvm/test/CodeGen/X86/min-legal-vector-width.ll

  Log Message:
  -----------
  [DAG] Add legalization handling for AVGCEIL/AVGFLOOR nodes (#92096)

Always match AVG patterns pre-legalization, and use TargetLowering::expandAVG to expand again during legalization.

I've removed the X86 custom AVGCEILU pattern detection and replaced with combines to try and convert other AVG nodes to AVGCEILU.



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