[DispatchCreation] Move the logic to transpose indexing maps into dispatch formation logic. #19412
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…patch formation logic.
For cases like
```
%0 = linalg.matmul
%1 = linalg.generic {
indexing_maps=[affine_map<(d0, d1) -> (d1, d0)>, ...], ...}
ins(%0, ... : ...) outs(...) {...}
```
some preprocessing patterns convert these to
```
%0 = linalg.matmul
%1 = linalg.generic {
indexing_maps=[affine_map<(d0, d1) -> (d0, d1)>, ...], ...}
ins(%0, ... : ...) outs(...) {...}
```
to make these operations fusable. But these preprocessing are run too
early and doing a spooky-action-at-a-distance.
Instead just move this logic into dispatch formation itself.
Signed-off-by: MaheshRavishankar <[email protected]>
Signed-off-by: MaheshRavishankar <[email protected]>
IanWood1
reviewed
Dec 8, 2024
| /// transposed with respect to each other. To find more fusion opportunities for | ||
| /// consumer elementwise operation, the indexing maps in the consumer can be | ||
| /// made to "align" with the indexing map of the producer to enhance fusion. | ||
| static bool areOpsFusableAfterInterchangeOfConsumer( |
There was a problem hiding this comment.
Maybe rename this to something like makeConsumerFusableViaInterchange to signal that it modifies the operation? So it's more clear it has side-effects on the indexing maps of the op.
I'm not sure whats going on with the regression tests but otherwise this looks good. I'm glad ElementwiseOpInterchangePattern is getting removed, it was a bit weird and caused some problems
Signed-off-by: MaheshRavishankar <[email protected]>
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For cases like
some preprocessing patterns convert these to
to make these operations fusable. But these preprocessing are run too
early and doing a spooky-action-at-a-distance.
Instead just move this logic into dispatch formation itself.
Signed-off-by: MaheshRavishankar [email protected]