[PATCH] D104837: [PowerPC] Add XL compat __compare_and_swap builtins

[Jinsong Ji via Phabricator via cfe-commits]

jsji created this revision.
jsji added reviewers: PowerPC, lkail, w2yehia.
Herald added subscribers: shchenz, jfb, kbarton, nemanjai.
jsji requested review of this revision.
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Prototype
int __compare_and_swap (volatile int* addr, int* old_val_addr, int
new_val);

int __compare_and_swaplp (volatile long* addr, long* old_val_addr, long
new_val);

Refer to
https://www.ibm.com/docs/en/xl-c-and-cpp-aix/16.1?topic=functions-compare-swap-compare-swaplp


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D104837

Files:
  clang/include/clang/Basic/BuiltinsPPC.def
  clang/lib/Basic/Targets/PPC.cpp
  clang/lib/CodeGen/CGBuiltin.cpp
  clang/test/CodeGen/builtins-ppc-xlcompat-cas-error.c
  clang/test/CodeGen/builtins-ppc-xlcompat-cas.c

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