[clang] [Clang] VectorExprEvaluator::VisitCallExpr / InterpretBuiltin - allow SSE41 phminposuw intrinsic to be used in constexp (PR #163041)

[Simon Pilgrim via cfe-commits]

RKSimon wrote:

@kimsh02 if you click the "re-request review" icon next to me name at the top of the page the patch will get readded to my review list

https://github.com/llvm/llvm-project/pull/163041