提交 3e99b166 编写于 作者: D dzhwinter

add generic add operator

上级 87efa600
......@@ -141,9 +141,35 @@ static std::unique_ptr<OperatorBase> BackwardRecursive(
net->ops_[op_offset]->Rename(name, dup_outputs.back());
}
// collect all the offset to append `add` op for each alias
insert_position.push_back(
{dup_op.back(), OpRegistry::CreateOp("add", {{"X", {dup_outputs}}},
{{"Out", {name}}}, {})});
//
// one variable is shared between multiple operators.
// insert add operator one by one, then add it to output
if (dup_outputs.size() == 2) {
insert_position.push_back(
{dup_op.back(),
OpRegistry::CreateOp(
"add", {{"X", {dup_outputs[0]}}, {"Y", {dup_outputs[1]}}},
{{"Out", {name}}}, {})});
} else {
for (size_t output_idx = 0; output_idx < dup_outputs.size() - 1;
++output_idx) {
auto insert_add_x = dup_outputs[output_idx];
auto insert_add_y = dup_outputs[output_idx];
auto insert_add_out = name + "@SHARED@" + std::to_string(output_idx);
// first add op inserted
if (output_idx == dup_outputs.size() - 1) {
insert_add_out = name;
}
if (output_idx != 0) {
insert_add_y = name + "@SHARED@" + std::to_string(output_idx);
}
insert_position.push_back(
{dup_op.back(),
OpRegistry::CreateOp(
"add", {{"X", {insert_add_x}}, {"Y", {insert_add_y}}},
{{"Out", {insert_add_out}}}, {})});
}
}
}
// make sure the inserted `add` ops follow the BFS order.
......
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