[clang] nonblocking/nonallocating attributes: 2nd pass caller/callee analysis (PR #99656)

[Doug Wyatt via cfe-commits]

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@@ -2551,6 +3807,9 @@ void clang::sema::AnalysisBasedWarnings::IssueWarnings(
                        SourceLocation())) {
     CallableVisitor(CallAnalyzers).TraverseTranslationUnitDecl(TU);
   }
+
+  if (S.Context.hasAnyFunctionEffects())
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dougsonos wrote:

This doesn't necessarily need to be here in AnalysisBasedWarnings (though it does borrow a utility function `isNoexcept()`). It's just convenient because this is the right general time, at the end of Sema, to do this check.

https://github.com/llvm/llvm-project/pull/99656