[all-commits] [llvm/llvm-project] 1d9dcc: [mlir][vector] Add canonicalzation pattern for sha...

[Andrzej Warzyński via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1d9dcca9e3cd36cbaf0759a4b084c808d1aee044
      https://github.com/llvm/llvm-project/commit/1d9dcca9e3cd36cbaf0759a4b084c808d1aee044
  Author: Andrzej Warzynski <andrzej.warzynski at arm.com>
  Date:   2023-08-24 (Thu, 24 Aug 2023)

  Changed paths:
    M mlir/lib/Dialect/Vector/IR/VectorOps.cpp
    M mlir/test/Dialect/Vector/canonicalize.mlir

  Log Message:
  -----------
  [mlir][vector] Add canonicalzation pattern for shape_cast(create_mask)

This is primarily to avoid trailing unit dims:
```
%1 = vector.create_mask %c1, %dim_0, %c1, %c1 : vector<1x4x1x1xi1>
%2 = vector.shape_cast %1 : vector<1x4x1x1xi1> to vector<1x4xi1>
```
becomes:
```
%1 = vector.create_mask %c1, %dim_0 : vector<1x4xi1>
```

Differential Revision: https://reviews.llvm.org/D158111