[llvm] [DA] Fix the check between Subscript and Size after delinearization (PR #151326)

[Ryotaro Kasuga via llvm-commits]

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@@ -1126,17 +1126,32 @@ bool DependenceInfo::isKnownLessThan(const SCEV *S, const SCEV *Size) const {
   Size = SE->getTruncateOrZeroExtend(Size, MaxType);
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kasuga-fj wrote:

Although this may not be directly related to the change, this might be incorrect, as `Size` can be negative at this point.


https://github.com/llvm/llvm-project/pull/151326