[llvm] [Scalarizer] Make `uadd_with_overflow` scalarizable (PR #126815)

[Simon Pilgrim via llvm-commits]

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@@ -125,6 +125,7 @@ bool llvm::isTriviallyScalarizable(Intrinsic::ID ID,
   // https://github.com/llvm/llvm-project/issues/112408
   switch (ID) {
   case Intrinsic::frexp:
+  case Intrinsic::uadd_with_overflow:
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RKSimon wrote:

Should the other arithmetic overflow intrinsics be handled at the same time?

https://github.com/llvm/llvm-project/pull/126815