[llvm] [LAA] Perform checks for no-wrap separately from getPtrStride. (PR #126971)

[Philip Reames via llvm-commits]

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@@ -813,16 +813,102 @@ static bool hasComputableBounds(PredicatedScalarEvolution &PSE, Value *Ptr,
   return AR->isAffine();
 }
 
+/// Try to compute the stride for \p AR. Used by getPtrStride.
+static std::optional<int64_t>
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preames wrote:

Can you recommit this extraction and rebase?

https://github.com/llvm/llvm-project/pull/126971