[clang] [libcxx] [Clang] Add __builtin_invoke and use it in libc++ (PR #116709)

[Erich Keane via cfe-commits]

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@@ -5406,6 +5408,101 @@ ExprResult Sema::ConvertVectorExpr(Expr *E, TypeSourceInfo *TInfo,
                                    RParenLoc, CurFPFeatureOverrides());
 }
 
+ExprResult Sema::BuiltinInvoke(CallExpr *TheCall) {
+  auto Loc = TheCall->getBeginLoc();
+  auto Args = MutableArrayRef(TheCall->getArgs(), TheCall->getNumArgs());
+  assert(llvm::none_of(Args,
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erichkeane wrote:

Is this enforced earlier?  Why can't type dependent args make it here?

https://github.com/llvm/llvm-project/pull/116709