[all-commits] [llvm/llvm-project] d8e44a: [RISCV] Add late optimization pass for riscv (#133...

[Mikhail R. Gadelha via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d8e44a9ab2901eee7cd0440b62722eb01cac94d7
      https://github.com/llvm/llvm-project/commit/d8e44a9ab2901eee7cd0440b62722eb01cac94d7
  Author: Mikhail R. Gadelha <mikhail at igalia.com>
  Date:   2025-03-27 (Thu, 27 Mar 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/CMakeLists.txt
    M llvm/lib/Target/RISCV/RISCV.h
    M llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
    M llvm/lib/Target/RISCV/RISCVInstrInfo.h
    A llvm/lib/Target/RISCV/RISCVLateBranchOpt.cpp
    M llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
    M llvm/test/CodeGen/RISCV/GlobalISel/rv32zbb.ll
    M llvm/test/CodeGen/RISCV/O3-pipeline.ll
    M llvm/test/CodeGen/RISCV/bfloat-br-fcmp.ll
    M llvm/test/CodeGen/RISCV/branch_zero.ll
    M llvm/test/CodeGen/RISCV/double-br-fcmp.ll
    M llvm/test/CodeGen/RISCV/float-br-fcmp.ll
    M llvm/test/CodeGen/RISCV/half-br-fcmp.ll
    M llvm/test/CodeGen/RISCV/machine-sink-load-immediate.ll
    M llvm/test/CodeGen/RISCV/rvv/vxrm-insert-out-of-loop.ll
    M llvm/test/CodeGen/RISCV/simplify-condbr.ll

  Log Message:
  -----------
  [RISCV] Add late optimization pass for riscv (#133256)

This patch is an alternative to PRs #117060, #131684, #131728.

The patch adds a late optimization pass that replaces conditional
branches that can be statically evaluated with an unconditinal branch.

Adding Michael as a co-author as most of the code that evaluates the
condition comes from #131684.

Co-authored-by: Michael Maitland michaeltmaitland at gmail.com



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