[all-commits] [llvm/llvm-project] c0221e: [RISCV] Add a pass to combine `cm.pop` and `ret` i...

[VincentWu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c0221e006d47ed24c4562f264411943596a6800e
      https://github.com/llvm/llvm-project/commit/c0221e006d47ed24c4562f264411943596a6800e
  Author: WuXinlong <821408745 at qq.com>
  Date:   2023-07-07 (Fri, 07 Jul 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/CMakeLists.txt
    M llvm/lib/Target/RISCV/RISCV.h
    A llvm/lib/Target/RISCV/RISCVPushPopOptimizer.cpp
    M llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
    M llvm/test/CodeGen/RISCV/O3-pipeline.ll
    M llvm/test/CodeGen/RISCV/callee-saved-gprs.ll
    M llvm/test/CodeGen/RISCV/cm_mvas_mvsa.ll
    M llvm/test/CodeGen/RISCV/push-pop-popret.ll

  Log Message:
  -----------
  [RISCV] Add a pass to combine `cm.pop` and `ret` insts

`RISCVPushPopOptimizer.cpp` combine `cm.pop` and `ret` to generates `cm.popretz` or `cm.popret` .

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D150416