[PATCH] D120922: [AMDGPU] Ensure return address is save/restored if clobbered or when function has calls

[Venkata Ramanaiah Nalamothu via Phabricator via llvm-commits]

RamNalamothu created this revision.
RamNalamothu added reviewers: arsenm, scott.linder, t-tye, kzhuravl.
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This test is to make sure the return address registers, if clobbered in the
function or when the function has calls, are save/restored irrespective of
whether the IPRA is enabled/disabled.

This test is found to be not save/restore the return address registers, when
clobbered in the function, with the corresponding downstream changes of D114652 <https://reviews.llvm.org/D114652>.

The test could not be reduced further as the register allocator needs enough
register pressure so that it allocates the return address registers as well.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D120922

Files:
  llvm/test/CodeGen/AMDGPU/ipra-return-address-save-restore.ll

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