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

[Florian Hahn via llvm-commits]

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@@ -2233,7 +2229,7 @@ MemoryDepChecker::Dependence::DepType MemoryDepChecker::isDependent(
 
   // An update to MinDepDistBytes requires an update to MaxSafeVectorWidthInBits
   // since there is a backwards dependency.
-  uint64_t MaxVF = MinDepDistBytes / (TypeByteSize * *CommonStride);
+  uint64_t MaxVF = MinDepDistBytes / (TypeByteSize * MaxStride);
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fhahn wrote:

Should be fine, as this maximizes the divisor, so conservatively reduces the VF

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