[PATCH] D81070: [AMDGPU] Fixup use of StackPtrOffsetReg when not initialized

[David Stuttard via Phabricator via llvm-commits]

dstuttard created this revision.
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dstuttard updated this revision to Diff 268107.
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Improved the test to include one that has a call provoking s32 to be initialized


In some cases, StackPtrOffsetReg will not have been initialized. (In the case
where MFI.hasCalls() evaluates to false).

In this situation we can use the register, but don't need to add/subtract the
offset (it's not used in the rest of the entry function).

Change-Id: If317b29ff1e5c75a3ed3662920e6e960bca3b782


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D81070

Files:
  llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
  llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
  llvm/test/CodeGen/AMDGPU/spill-scavenge-offset.ll

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