[clang] [clang][OpenMP] Diagnose badly-formed collapsed imperfect loop nests (#60678) (PR #101305)

[Alexey Bataev via cfe-commits]

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@@ -9487,13 +9606,17 @@ checkOpenMPLoop(OpenMPDirectiveKind DKind, Expr *CollapseLoopCountExpr,
   unsigned NestedLoopCount = 1;
   bool SupportsNonPerfectlyNested = (SemaRef.LangOpts.OpenMP >= 50) &&
                                     !isOpenMPLoopTransformationDirective(DKind);
+  llvm::SmallPtrSet<const Decl *, 4> CollapsedLoopVarDecls{};
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alexey-bataev wrote:

`llvm::SmallPtrSet<const Decl *, 4> CollapsedLoopVarDecls;`

https://github.com/llvm/llvm-project/pull/101305