[all-commits] [llvm/llvm-project] 8e87dc: [RISCV][GISel] Add a post legalizer combiner and e...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8e87dc10b80f298a682bf01fab190a57e6d5af57
      https://github.com/llvm/llvm-project/commit/8e87dc10b80f298a682bf01fab190a57e6d5af57
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2023-09-22 (Fri, 22 Sep 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/CMakeLists.txt
    M llvm/lib/Target/RISCV/GISel/RISCVO0PreLegalizerCombiner.cpp
    A llvm/lib/Target/RISCV/GISel/RISCVPostLegalizerCombiner.cpp
    M llvm/lib/Target/RISCV/GISel/RISCVPreLegalizerCombiner.cpp
    M llvm/lib/Target/RISCV/RISCV.h
    M llvm/lib/Target/RISCV/RISCVCombine.td
    M llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
    M llvm/test/CodeGen/RISCV/GlobalISel/alu-roundtrip.ll
    M llvm/test/CodeGen/RISCV/GlobalISel/gisel-commandline-option.ll

  Log Message:
  -----------
  [RISCV][GISel] Add a post legalizer combiner and enable a couple comb… (#67053)

…ines.

We have an existing test that shows benefit from redundant_and and
identity combines so use them as a starting point.