[llvm] [LAA] Use MaxStride instead of CommonStride to calculate MaxVF (PR #98142)

[Florian Hahn via llvm-commits]

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@@ -2236,7 +2235,10 @@ MemoryDepChecker::isDependent(const MemAccessInfo &A, unsigned AIdx,
       couldPreventStoreLoadForward(MinDistance, TypeByteSize, *CommonStride))
     return Dependence::BackwardVectorizableButPreventsForwarding;
 
-  uint64_t MaxVF = MinDepDistBytes / *CommonStride;
+  // An update to MinDepDistBytes requires an update to MaxSafeVectorWidthInBits
+  // since there is a backwards dependency. We use MaxStride to get a
+  // conservative upper bound on MaxVF.
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fhahn wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/98142