[llvm] [ValueTracking] Handle flipped strictness cases in `matchSelectPattern` (PR #121958)

[Nikita Popov via llvm-commits]

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@@ -8488,6 +8488,20 @@ static SelectPatternResult matchMinMax(CmpInst::Predicate Pred,
   LHS = TrueVal;
   RHS = FalseVal;
 
+  // Handle constant RHS cases like X < 3 ? 2 : X -> max(X, 2)
+  auto *CmpRHSC = dyn_cast<ConstantInt>(CmpRHS);
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nikic wrote:

Should handle vector constant as well?

https://github.com/llvm/llvm-project/pull/121958