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#include <torch/csrc/jit/passes/inliner.h>
#include <torch/csrc/jit/api/module.h>
#include <torch/csrc/jit/frontend/error_report.h>
#include <torch/csrc/jit/jit_log.h>
namespace torch {
namespace jit {
namespace prim {
using namespace ::c10::prim;
}
void inlineCalls(Block* block) {
for (auto it = block->nodes().begin(), end = block->nodes().end();
it != end;) {
Node* cur = *it++;
switch (cur->kind()) {
case prim::CallFunction: {
AT_ASSERT(cur->input(0)->node()->kind() == prim::Constant);
auto function_constant = cur->input(0)->node();
auto fun_type =
function_constant->output()->type()->expect<FunctionType>();
cur->removeInput(0);
GRAPH_UPDATE(
"Inlining function '", fun_type->function()->name(), "' to ", *cur);
GRAPH_UPDATE(
"Function body: ", *fun_type->function()->optimized_graph());
inlineCallTo(cur, fun_type->function());
} break;
case prim::CallMethod: {
const std::string& name = cur->s(attr::name);
if (auto class_type = cur->input(0)->type()->cast<ClassType>()) {
Function& function = class_type->getMethod(name);
if (!function.isGraphFunction()) {
continue;
}
GRAPH_UPDATE("Inlining method '", function.name(), "' to ", *cur);
GRAPH_UPDATE("Function body: ", *function.optimized_graph());
inlineCallTo(cur, &function);
}
} break;
default: {
for (auto b : cur->blocks()) {
inlineCalls(b);
}
} break;
}
}
}
void Inline(Graph& graph) {
GRAPH_DUMP("Before Inlining: ", &graph);
inlineCalls(graph.block());
GRAPH_DUMP("After Inlining: ", &graph);
}
} // namespace jit
} // namespace torch
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