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author | Md Asghar Ahmad Shahid <md.asghar.ahmad.shahid@intel.com> | 2025-02-07 00:38:50 +0530 |
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committer | GitHub <noreply@github.com> | 2025-02-06 19:08:50 +0000 |
commit | f2bca9e3856bd070320473a016f706bf84a5dd5e (patch) | |
tree | ae952cac8540407d9c214af5788df5210a2df022 /llvm/lib/CodeGen/MachineStableHash.cpp | |
parent | f8e53a93be91299818e761afa8effd8301999336 (diff) | |
download | llvm-f2bca9e3856bd070320473a016f706bf84a5dd5e.zip llvm-f2bca9e3856bd070320473a016f706bf84a5dd5e.tar.gz llvm-f2bca9e3856bd070320473a016f706bf84a5dd5e.tar.bz2 |
[MLIR][Linalg] Introduce broadcast/transpose semantic to batch_matmul (#122275)
Goals:
1. To add syntax and semantic to 'batch_matmul' without changing any of
the existing syntax expectations for current usage. batch_matmul is
still just batch_matmul.
2. Move the definition of batch_matmul from linalg OpDsl to tablegen ODS
infra.
Scope of this patch:
To expose broadcast and transpose semantics on the 'batch_matmul'.
The broadcast and transpose semantic are as follows:
By default, 'linalg.batch_matmul' behavior will remain as is. Broadcast
and Transpose semantics can be applied by specifying the explicit
attribute 'indexing_maps' as shown below. This is a list attribute, so
the list must include all the maps if specified.
Example Transpose:
```
linalg.batch_matmul indexing_maps = [
affine_map< (d0, d1, d2, d3) -> (d0, d3, d1)>, //transpose
affine_map< (d0, d1, d2, d3) -> (d0, d3, d2)>,
affine_map< (d0, d1, d2, d3) -> (d0, d1, d2)>
]
ins (%arg0, %arg1: memref<2x5x3xf32>,memref<2x5x7xf32>)
outs (%arg2: memref<2x3x7xf32>)
```
Example Broadcast:
```
linalg.batch_matmul indexing_maps = [
affine_map< (d0, d1, d2, d3) -> (d3)>, //broadcast
affine_map< (d0, d1, d2, d3) -> (d0, d3, d2)>,
affine_map< (d0, d1, d2, d3) -> (d0, d1, d2)>
]
ins (%arg0, %arg1: memref<5xf32>,memref<2x5x7xf32>)
outs (%arg2: memref<2x3x7xf32>)
```
Example Broadcast and transpose:
```
linalg.batch_matmul indexing_maps = [
affine_map< (d0, d1, d2, d3) -> (d1, d3)>, //broadcast
affine_map< (d0, d1, d2, d3) -> (d0, d2, d3)>, //transpose
affine_map< (d0, d1, d2, d3) -> (d0, d1, d2)>
]
ins (%arg0, %arg1: memref<3x5xf32>, memref<2x7x5xf32>)
outs (%arg2: memref<2x3x7xf32>)
```
RFCs and related PR:
https://discourse.llvm.org/t/rfc-linalg-opdsl-constant-list-attribute-definition/80149
https://discourse.llvm.org/t/rfc-op-explosion-in-linalg/82863
https://discourse.llvm.org/t/rfc-mlir-linalg-operation-tree/83586
https://github.com/llvm/llvm-project/pull/115319
Diffstat (limited to 'llvm/lib/CodeGen/MachineStableHash.cpp')
0 files changed, 0 insertions, 0 deletions