[all-commits] [llvm/llvm-project] 59cf9d: [AMDGPU][GISel] Enable Selection of ADD3 for G_PTR...

[Pierre van Houtryve via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 59cf9dd92337214d15d4b04f299832a328de195b
      https://github.com/llvm/llvm-project/commit/59cf9dd92337214d15d4b04f299832a328de195b
  Author: Pierre van Houtryve <pierre.vanhoutryve at amd.com>
  Date:   2022-08-24 (Wed, 24 Aug 2022)

  Changed paths:
    M llvm/include/llvm/Target/GenericOpcodes.td
    M llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
    M llvm/include/llvm/Target/TargetSelectionDAG.td
    M llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
    M llvm/lib/Target/AMDGPU/VOP3Instructions.td
    M llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-pattern-add3.mir
    M llvm/test/CodeGen/AMDGPU/flat-scratch-svs.ll
    M llvm/utils/TableGen/CodeGenInstruction.cpp
    M llvm/utils/TableGen/CodeGenInstruction.h
    M llvm/utils/TableGen/GlobalISelEmitter.cpp

  Log Message:
  -----------
  [AMDGPU][GISel] Enable Selection of ADD3 for G_PTR_ADD

Allows things like `(G_PTR_ADD (G_PTR_ADD a, b), c)` to be
simplified into a single ADD3 instruction instead of two adds.

Reviewed By: foad

Differential Revision: https://reviews.llvm.org/D131254