[PATCH] D118350: [AIX][PowerPC] Emit byval alignment warning only when struct member is passed to a function

[Zarko Todorovski via Phabricator via cfe-commits]

ZarkoCA created this revision.
ZarkoCA added reviewers: hubert.reinterpretcast, sfertile, cebowleratibm, stevewan, Jake-Egan, aaron.ballman, tmatheson, dnsampaio.
ZarkoCA added projects: clang, PowerPC.
Herald added subscribers: shchenz, nemanjai.
ZarkoCA requested review of this revision.
Herald added a subscriber: cfe-commits.

Previous warning went on whenever a struct with a struct member with alignment => 16 was declared.
This led to too many false positives and led to diagnostic lit failures due to it being emitted
too frequently. Only emit the warning when such an argument is passed to a caller function since
this is where the potential binary compatibility issue with XL 16.1.0 and older exists.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D118350

Files:
  clang/include/clang/Sema/Sema.h
  clang/lib/Sema/SemaChecking.cpp
  clang/lib/Sema/SemaDeclAttr.cpp
  clang/test/Sema/aix-attr-align.c

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