[clang] [clang] constexpr integer `__builtin_elementwise_{max,min}` (PR #152294)

[Mariya Podchishchaeva via cfe-commits]

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@@ -11654,6 +11654,41 @@ bool VectorExprEvaluator::VisitCallExpr(const CallExpr *E) {
 
     return Success(APValue(ResultElements.data(), ResultElements.size()), E);
   }
+  case Builtin::BI__builtin_elementwise_max:
+  case Builtin::BI__builtin_elementwise_min: {
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Fznamznon wrote:

The cases for max and min look pretty much the same as for add_sat and sub_sat just above. Perhaps it makes sense to simply extend `switch` on line 11642?

https://github.com/llvm/llvm-project/pull/152294