[PATCH] D108141: [PowerPC][AIX] Set the HasAlloca flag in the AIX Traceback Table only if R31 is used as a frame pointer

[Zarko Todorovski via Phabricator via llvm-commits]

ZarkoCA created this revision.
ZarkoCA added reviewers: DiggerLin, sfertile, lkail, hubert.reinterpretcast.
ZarkoCA added projects: LLVM, PowerPC.
Herald added subscribers: shchenz, kbarton, hiraditya, nemanjai.
ZarkoCA requested review of this revision.
Herald added a subscriber: llvm-commits.

After c063946476e083a9a0c5bd397337d1ece4742ec6 <https://reviews.llvm.org/rGc063946476e083a9a0c5bd397337d1ece4742ec6> usage of R31 doesn't necessarily mean
that alloca is used. The `TracebackTable::IsAllocaUsedMask` flag should be set only 
when R31 is used as a frame pointer.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D108141

Files:
  llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
  llvm/test/CodeGen/PowerPC/aix-alloca-r31.ll
  llvm/test/CodeGen/PowerPC/aix-emit-tracebacktable-clobber-register.ll

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