[PATCH] D134599: [RISCV] Add CodeGen support of RISCV zcmp Extension

[Xinlong Wu via Phabricator via llvm-commits]

VincentWu updated this revision to Diff 473904.
VincentWu added a comment.

Do not emit Push/Pop when FP is in used

Fixed the problem mentioned in https://github.com/plctlab/llvm-project/issues/58

For the reason that the Spec of the ZCMP extension is not currently modified for this purpose, the LLVM implementation is modified first to avoid this problem. When DisableFramePointerElim is set, the generation of Push/Pop instructions is stopped.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D134599/new/

https://reviews.llvm.org/D134599

Files:
  llvm/lib/Target/RISCV/CMakeLists.txt
  llvm/lib/Target/RISCV/RISCV.h
  llvm/lib/Target/RISCV/RISCVFrameLowering.cpp
  llvm/lib/Target/RISCV/RISCVFrameLowering.h
  llvm/lib/Target/RISCV/RISCVMachineFunctionInfo.h
  llvm/lib/Target/RISCV/RISCVMoveOptimizer.cpp
  llvm/lib/Target/RISCV/RISCVPushPopOptimizer.cpp
  llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
  llvm/test/CodeGen/RISCV/O0-pipeline.ll
  llvm/test/CodeGen/RISCV/O3-pipeline.ll
  llvm/test/CodeGen/RISCV/attributes.ll
  llvm/test/CodeGen/RISCV/callee-saved-gprs.ll
  llvm/test/CodeGen/RISCV/cm_mvas_mvsa.ll
  llvm/test/CodeGen/RISCV/push-pop-popret.ll

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