[Mlir-commits] [mlir] [mlir][linalg] Reimplement SimplifyPackToExpandShape and SimplifyUnPackToCollapseShape for more cases. (PR #204971)

[Jerry Shih]

JerryShih wrote:

> > Reimplement SimplifyPackToExpandShape and SimplifyUnPackToCollapseShape for more cases.
> 
> Could you summarise the newly supported cases? Thank you!

@banach-space 
Do I misunderstand your sentence? Should I rewrite the commit message `title` to show the cases?
Maybe:
```
Reimplement SimplifyPackToExpandShape and SimplifyUnPackToCollapseShape for no transposition/padding semantic pack/unpack op.
```

original commit msg:
```
Reimplement SimplifyPackToExpandShape and SimplifyUnPackToCollapseShape for more cases.

If there is no transposition/padding semantic for pack/unpack,
we could try to use `mlir::getReassociationIndicesForReshape()`
to get the CollapseShapeOp/ExpandShapeOp form.
```

https://github.com/llvm/llvm-project/pull/204971