[all-commits] [llvm/llvm-project] 6af39d: [RISCV][NFC] Simplify the sp-offset reduction by s...

Yeting Kuo via All-commits all-commits at lists.llvm.org
Mon Sep 18 20:02:00 PDT 2023

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6af39d914c8377241b44f4e2fdd75b5ffff9c882
  Author: Yeting Kuo <46629943+yetingk at users.noreply.github.com>
  Date:   2023-09-19 (Tue, 19 Sep 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVFrameLowering.cpp

  Log Message:
  [RISCV][NFC] Simplify the sp-offset reduction by spimm of CM.PUSH/POP. (#66667)

When inserting prolgue/epilogue, we use the spimm of CM.PUSH/POP to
reduce the following offset for sp. Previously, we tried to use the free
space of the push stack to minimize the following sp-offset. But it's
useless, since the free space must be less than 16 and required stack should
be aligned to 16 before/after the adjustment.

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