[PATCH] D96869: [AMDGPU] Fix saving fp and bp

[Sebastian Neubauer via Phabricator via llvm-commits]

sebastian-ne created this revision.
sebastian-ne added reviewers: arsenm, foad, critson, madhur13490, piotr.
Herald added subscribers: kerbowa, hiraditya, t-tye, tpr, dstuttard, yaxunl, nhaehnle, jvesely, kzhuravl, qcolombet.
sebastian-ne requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

Spilling the fp or bp to scratch could overwrite VGPRs of inactive
lanes. Fix that by saving and restoring the VGPR used for spilling.

Builds upon D96336 <https://reviews.llvm.org/D96336>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D96869

Files:
  llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
  llvm/test/CodeGen/AMDGPU/callee-frame-setup.ll
  llvm/test/CodeGen/AMDGPU/frame-setup-without-sgpr-to-vgpr-spills.ll
  llvm/test/CodeGen/AMDGPU/stack-realign.ll

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