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

[Simon Pilgrim via cfe-commits]

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@@ -4186,6 +4161,229 @@ static bool interp__builtin_ia32_gfni_mul(InterpState &S, CodePtr OpPC,
   return true;
 }
 
+static bool interp__builtin_x86_comi(InterpState &S, CodePtr OpPC,
+                                     const InterpFrame *Frame,
+                                     const CallExpr *Call, unsigned ID) {
+  uint32_t Predicate;
+  switch (ID) {
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RKSimon wrote:

don't nest switches like this - add a Predicate argument to interp__builtin_x86_comi and split the switch below - see similar intrinsics for examples

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