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[Relax][PyTorch] Add support for torch.permute #17184

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Merged
merged 2 commits into from
Jul 22, 2024
Merged

[Relax][PyTorch] Add support for torch.permute #17184

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f22958e
add testcase
mshr-h Jul 22, 2024
aa2e91a
support torch.permute
mshr-h Jul 22, 2024
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4 changes: 4 additions & 0 deletions python/tvm/relax/frontend/torch/fx_translator.py
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Original file line number Diff line number Diff line change
Expand Up @@ -550,7 +550,11 @@ def _flatten(self, node: fx.node.Node) -> relax.Var:
return self.block_builder.emit(relax.op.reshape(x, new_shape))

def _permute(self, node: fx.node.Node) -> relax.Var:
import torch # type: ignore

args = self.retrieve_args(node)
if isinstance(args[1], (torch.Size, tuple, list)):
return self.block_builder.emit(relax.op.permute_dims(args[0], tuple(args[1])))
return self.block_builder.emit(relax.op.permute_dims(args[0], args[1:]))

def _reshape(self, node: fx.node.Node) -> relax.Var:
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9 changes: 7 additions & 2 deletions tests/python/relax/test_frontend_from_fx.py
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Expand Up @@ -3029,10 +3029,14 @@ def forward(self, x):
def test_permute():
input_info = [([1, 2, 3, 4], "float32")]

class Permute(Module):
class Permute1(Module):
def forward(self, x):
return x.permute(0, 3, 2, 1)

class Permute2(Module):
def forward(self, x):
return torch.permute(x, (0, 3, 2, 1))

@tvm.script.ir_module
class expected1:
@R.function
Expand All @@ -3046,7 +3050,8 @@ def main(
R.output(gv)
return gv

verify_model(Permute(), input_info, {}, expected1)
verify_model(Permute1(), input_info, {}, expected1)
verify_model(Permute2(), input_info, {}, expected1)


def test_reshape():
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