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feat(pnnx): convert prelu[num_parameters=1] to leakyrelu, so that it can be fused with conv #6344

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feat(pnnx): convert prelu[num_parameters=1] to leakyrelu, so that it can be fused with conv #6344

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32 changes: 32 additions & 0 deletions tools/pnnx/src/pass_level5/fuse_static_prelu.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -35,12 +35,44 @@ pnnx.Output output 1 0 out
}
};

class convert_prelu_to_leakyrelu : public GraphRewriterPass
{
public:
const char* match_pattern_graph() const
{
return R"PNNXIR(7767517
3 2
pnnx.Input input 0 1 input
nn.PReLU op_0 1 1 input out num_parameters=1
pnnx.Output output 1 0 out
)PNNXIR";
}

const char* type_str() const
{
return "nn.LeakyReLU";
}

const char* name_str() const
{
return "leakyrelu";
}

void write(Operator* op, const std::map<std::string, Parameter>& captured_params, const std::map<std::string, Attribute>& captured_attrs) const
{
const Attribute& weight = captured_attrs.at("op_0.weight");
op->params["negative_slope"] = weight.get_float32_data()[0];
}
};

void fuse_static_prelu(Graph& graph)
{
fuse_static_Fprelu_pass a;
convert_prelu_to_leakyrelu b;
int opindex = 0;

pnnx_graph_rewrite(graph, &a, opindex);
pnnx_graph_rewrite(graph, &b, opindex);
}

} // namespace pnnx
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