Zarko Todorovski b575bbd0c7 [PowerPC][AIX] Set the HasAlloca flag in the AIX Traceback Table only if R31 is used as a frame pointer ...

After c063946476 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.

On AIX the `function calls alloca' bit seems to be set whenever R31 is
set up as a frame pointer, even when there is no alloca call.

Reviewed By: lkail

Differential Revision: https://reviews.llvm.org/D108141

2021-08-23 15:20:41 -04:00

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