[llvm-branch-commits] [mlir] [MLIR] Fix incorrect slice contiguity inference in `vector::isContiguousSlice` (PR #142422)

[James Newling via llvm-branch-commits]

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@@ -582,6 +582,15 @@ static SmallVector<Value> getCollapsedIndices(RewriterBase &rewriter,
 
 namespace {
 
+/// Helper functon to return the index of the last dynamic dimension in `shape`.
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newling wrote:

```suggestion
/// Helper functon to return the index of the last dynamic dimension in `shape`. or -1 if there are no dynamic dimensions
```
... if I understand correctly, although it might be static_cast<int64_t>(0ULL - 1), not sure what that is

https://github.com/llvm/llvm-project/pull/142422