[clang] [Clang] VectorExprEvaluator::VisitCallExpr / InterpretBuiltin - allow insertps intrinsic to be used in constexp (PR #165513)

[Simon Pilgrim via cfe-commits]

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@@ -11622,7 +11622,8 @@ static bool evalPackBuiltin(const CallExpr *E, EvalInfo &Info, APValue &Result,
 static bool evalShuffleGeneric(
     EvalInfo &Info, const CallExpr *Call, APValue &Out,
     llvm::function_ref<std::pair<unsigned, unsigned>(unsigned, unsigned)>
-        GetSourceIndex) {
+        GetSourceIndex,
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RKSimon wrote:

Remove ShouldZero and update this callback to match interp__builtin_ia32_shuffle_generic

https://github.com/llvm/llvm-project/pull/165513