[clang] [X86][Clang] VectorExprEvaluator::VisitCallExpr / InterpretBuiltin - allow SSE/AVX COMI/UCOMI/CMPS/CMPP fp comparison intrinsics to be used in constexpr (PR #182589)

[Timm Baeder via cfe-commits]

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@@ -6662,6 +6725,225 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC, const CallExpr *Call,
           return llvm::maximum(A, B);
         });
 
+  // COMI and UCOMI produce the same boolean result, but keep their signaling
+  // and quiet predicates distinct to reflect their different floating-point
+  // exception behavior, even though constant evaluation does not expose it.
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tbaederr wrote:

This comment should be on the function, not in here.

https://github.com/llvm/llvm-project/pull/182589