[StableHLO] Port reduce canon patterns #14045
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Turns out that linalg lowering depends on these.
The code is ported from equivalent folds and rewrite patterns in the mlir-hlo repo. The only notable difference is that this implementation fixes bugs with rewrite patterns performing op updates without going through the pattern rewriter. Also added a new test for the second noop case.
Fixes: #14042
Issue: #12678