[llvm] [InstCombine] Fold max/min when incrementing/decrementing by 1 (PR #142466)

[Alex MacLean via llvm-commits]

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@@ -565,6 +565,59 @@ Instruction *InstCombinerImpl::foldSelectIntoOp(SelectInst &SI, Value *TrueVal,
   return nullptr;
 }
 
+/// Try to fold a select to a min/max intrinsic. Many cases are already handled
+/// by matchDecomposedSelectPattern but here we handle the cases where more
+/// exensive modification of the IR is required.
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AlexMaclean wrote:

Fixed

https://github.com/llvm/llvm-project/pull/142466