[PATCH] D136222: [LoongArch] Split SP adjustment

[wanglei via Phabricator via llvm-commits]

wangleiat created this revision.
wangleiat added reviewers: SixWeining, xen0n, xry111, gonglingqin, MaskRay.
Herald added subscribers: StephenFan, luismarques, s.egerton, PkmX, simoncook, hiraditya, arichardson.
Herald added a project: All.
wangleiat requested review of this revision.
Herald added subscribers: llvm-commits, pcwang-thead.
Herald added a project: LLVM.

This patch split the SP adjustment to reduce the instructions in
prologue and epilogue. In this way, the offset of the callee saved
register could fit in a single store.

Similar to D68011 <https://reviews.llvm.org/D68011>(RISCV).

Depends on D136074 <https://reviews.llvm.org/D136074>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D136222

Files:
  llvm/lib/Target/LoongArch/LoongArchFrameLowering.cpp
  llvm/lib/Target/LoongArch/LoongArchFrameLowering.h
  llvm/test/CodeGen/LoongArch/split-sp-adjust.ll
  llvm/test/CodeGen/LoongArch/stack-realignment.ll

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