[PATCH] D116261: [Clang][OpenMP] Add support for compare capture in parser

[Shilei Tian via Phabricator via cfe-commits]

tianshilei1992 marked an inline comment as done.
tianshilei1992 added inline comments.


================
Comment at: clang/lib/Sema/SemaOpenMP.cpp:11320
+  bool MutexClauseEncountered = false;
+  llvm::SmallSet<OpenMPClauseKind, 2> EncounteredAtomicKinds;
   for (const OMPClause *C : Clauses) {
----------------
ABataev wrote:
> SmallVector with 2 elements should be enough, no need to use SmallSet here.
`SmallVector` doesn't provide `contains`, which we use to check if `OMPC_compare` and `OMPC_capture` exist at the same time. Using `SmallVector` requires us to have a complicated comparison, for example:
```
(EncounteredAtomicKinds[0] == OMPC_compare && EncounteredAtomicKinds[1] == OMPC_capture) || (EncounteredAtomicKinds[1] == OMPC_compare && EncounteredAtomicKinds[0] == OMPC_capture)
```
which is not as neat as `SmallSet`.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D116261/new/

https://reviews.llvm.org/D116261