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patch qnn silu lowering #8494

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Feb 14, 2025
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patch qnn silu lowering #8494

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22 changes: 10 additions & 12 deletions backends/qualcomm/_passes/decompose_silu.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,6 @@

import torch
from executorch.exir.pass_base import ExportPass, PassResult
from torch.fx.passes.utils.source_matcher_utils import get_source_partitions


class DecomposeSilu(ExportPass):
Expand All @@ -22,24 +21,23 @@ def _copy_meta(self, meta: Dict):

def call(self, graph_module: torch.fx.GraphModule):
graph = graph_module.graph
partitions = get_source_partitions(
graph, [torch.nn.functional.silu, torch.ops.aten.silu.default]
)
for _, src_partitions in partitions.items():
for src_partition in src_partitions:

inputs = src_partition.input_nodes
silu_node = src_partition.nodes[0]
with graph_module.graph.inserting_after(inputs[0]):
for node in graph.nodes:
if (
node.op == "call_function"
and node.target == torch.ops.aten.silu.default
):
silu_node = node
silu_node_input = node.args[0]
with graph_module.graph.inserting_after(silu_node_input):
sigmoid_node = graph.create_node(
"call_function", torch.ops.aten.sigmoid, (inputs[0],)
"call_function", torch.ops.aten.sigmoid, (silu_node_input,)
)
sigmoid_node.meta = self._copy_meta(silu_node.meta)
with graph_module.graph.inserting_after(sigmoid_node):
mul_node = graph.create_node(
"call_function",
torch.ops.aten.mul,
(inputs[0], sigmoid_node),
(silu_node_input, sigmoid_node),
)
mul_node.meta = self._copy_meta(silu_node.meta)
for user in silu_node.users.copy():
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