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executable.cc
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executable.cc
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*!
* \file tvm/runtime/vm/executable.cc
* \brief The implementation of a virtual machine executable APIs.
*/
#include <dmlc/memory_io.h>
#include <tvm/runtime/c_runtime_api.h>
#include <tvm/runtime/registry.h>
#include <tvm/runtime/vm.h>
#include <algorithm>
#include <iomanip>
#include <iostream>
#include <memory>
#include <sstream>
#include <utility>
#include <vector>
#include "serialize_util.h"
namespace tvm {
namespace runtime {
namespace vm {
#define STREAM_CHECK(val, section) \
CHECK(val) << "Invalid VM file format in the " << section << " section." \
<< "\n";
// Helper to serialize a vm instruction.
VMInstructionSerializer SerializeInstruction(const Instruction& instr);
// Helper to deserialize a serialized vm instruction.
Instruction DeserializeInstruction(const VMInstructionSerializer& instr);
PackedFunc Executable::GetFunction(const std::string& name, const ObjectPtr<Object>& sptr_to_self) {
if (name == "get_lib") {
return PackedFunc(
[sptr_to_self, this](TVMArgs args, TVMRetValue* rv) { *rv = this->GetLib(); });
} else if (name == "get_bytecode") {
return PackedFunc(
[sptr_to_self, this](TVMArgs args, TVMRetValue* rv) { *rv = this->GetBytecode(); });
} else if (name == "get_stats") {
return PackedFunc([sptr_to_self, this](TVMArgs args, TVMRetValue* rv) { *rv = this->Stats(); });
} else if (name == "save") {
return PackedFunc([sptr_to_self, this](TVMArgs args, TVMRetValue* rv) { *rv = this->Save(); });
} else if (name == "get_function_arity") {
return PackedFunc([sptr_to_self, this](TVMArgs args, TVMRetValue* rv) {
std::string func_name = args[0];
*rv = this->GetFunctionArity(func_name);
});
} else if (name == "get_function_param_name") {
return PackedFunc([sptr_to_self, this](TVMArgs args, TVMRetValue* rv) {
std::string func_name = args[0];
int index = args[1];
*rv = this->GetFunctionParameterName(func_name, index);
});
} else {
LOG(FATAL) << "Unknown packed function: " << name;
return PackedFunc(nullptr);
}
}
int Executable::GetFunctionArity(std::string func_name) const {
auto it = global_map.find(func_name);
if (it == global_map.end()) {
LOG(ERROR) << "Cannot find function " << func_name << " in executable";
return -1;
}
const auto& func = functions[it->second];
return func.params.size();
}
std::string Executable::GetFunctionParameterName(std::string func_name, uint32_t index) const {
auto it = global_map.find(func_name);
if (it == global_map.end()) {
LOG(ERROR) << "Cannot find function " << func_name << " in executable";
return "";
}
const auto& func = functions[it->second];
if (index > func.params.size()) {
LOG(ERROR) << "Invalid parameter index";
return "";
}
return func.params[index];
}
std::string Executable::GetBytecode() const {
std::ostringstream oss;
for (size_t i = 0; i < functions.size(); ++i) {
const auto& func = functions[i];
// Print the header of the function format.
oss << "VM Function[" << i << "]: " << func.name << "(";
for (const auto& param : func.params) {
oss << param << ", ";
}
oss.seekp(-2, std::ios_base::end);
oss << ")" << std::endl;
oss << "# reg file size = " << func.register_file_size << std::endl;
oss << "# instruction count = " << func.instructions.size() << std::endl;
// Print the instructions of a `VMFunction`.
// The part after ";" is the instruction in text format.
oss << "opcode, fields # inst(text):" << std::endl;
for (size_t idx = 0; idx < func.instructions.size(); ++idx) {
const auto& instr = func.instructions[idx];
const auto& serialized_instr = SerializeInstruction(instr);
oss << std::setw(2) << idx << ": " << serialized_instr.opcode << " ";
for (auto it : serialized_instr.fields) {
oss << it << " ";
}
oss << " # " << instr;
if (oss.str().back() != '\n') oss << std::endl;
}
oss << std::endl;
}
return oss.str();
}
std::string Executable::Stats() const {
std::ostringstream oss;
oss << "Relay VM executable statistics:" << std::endl;
// Get the number of constants and the shape of each of them.
oss << " Constant shapes (# " << constants.size() << "): [";
for (const auto& it : constants) {
const auto constant = Downcast<NDArray>(it);
const auto& shape = constant.Shape();
// Scalar
if (shape.empty()) {
oss << "scalar, ";
continue;
}
oss << "[";
for (auto s : shape) {
oss << s << ", ";
}
oss.seekp(-2, oss.cur);
oss << "], " << std::endl;
}
if (!constants.empty()) oss.seekp(-2, oss.cur);
oss << "]" << std::endl;
// Get the number of globals and the name of each of them.
oss << " Globals (#" << global_map.size() << "): [";
for (const auto& it : global_map) {
oss << "(\"" << it.first << "\", " << it.second << ")"
<< ", ";
}
if (!global_map.empty()) oss.seekp(-2, oss.cur);
oss << "]" << std::endl;
// Get the number of primitive ops and the name of each of them.
oss << " Primitive ops (#" << primitive_map.size() << "): [";
std::vector<std::string> prim_ops;
for (const auto& it : primitive_map) {
auto packed_index = static_cast<size_t>(it.second);
if (prim_ops.size() <= packed_index) {
prim_ops.resize(packed_index + 1);
}
prim_ops[packed_index] = it.first;
}
for (const auto& it : prim_ops) {
oss << it << ", ";
}
if (!prim_ops.empty()) oss.seekp(-2, oss.cur);
oss << "]" << std::endl;
return oss.str();
}
void SaveHeader(dmlc::Stream* strm) {
uint64_t header = kTVMVMBytecodeMagic;
strm->Write(header);
std::string version = TVM_VERSION;
strm->Write(version);
}
TVMByteArray Executable::Save() {
// Initialize the stream object.
code_.clear();
dmlc::MemoryStringStream strm(&code_);
// Save header
SaveHeader(&strm);
// Global section.
SaveGlobalSection(&strm);
// Constant section.
SaveConstantSection(&strm);
// Primitive names.
SavePrimitiveOpNames(&strm);
// Code section.
SaveCodeSection(&strm);
TVMByteArray arr;
arr.data = code_.c_str();
arr.size = code_.length();
return arr;
}
void Executable::SaveGlobalSection(dmlc::Stream* strm) {
std::vector<std::pair<std::string, Index> > globals(this->global_map.begin(),
this->global_map.end());
auto comp = [](const std::pair<std::string, Index>& a, const std::pair<std::string, Index>& b) {
return a.second < b.second;
};
std::sort(globals.begin(), globals.end(), comp);
std::vector<std::string> glbs;
for (const auto& it : globals) {
glbs.push_back(it.first);
}
strm->Write(glbs);
}
void Executable::SaveConstantSection(dmlc::Stream* strm) {
std::vector<DLTensor*> arrays;
for (const auto& obj : this->constants) {
const auto cell = Downcast<runtime::NDArray>(obj);
arrays.push_back(const_cast<DLTensor*>(cell.operator->()));
}
strm->Write(static_cast<uint64_t>(this->constants.size()));
for (const auto& it : arrays) {
runtime::SaveDLTensor(strm, it);
}
}
void Executable::SavePrimitiveOpNames(dmlc::Stream* strm) {
std::vector<std::string> primitive_names;
for (const auto& it : this->primitive_map) {
auto packed_index = static_cast<size_t>(it.second);
if (primitive_names.size() <= packed_index) {
primitive_names.resize(packed_index + 1);
}
primitive_names[packed_index] = it.first;
}
strm->Write(primitive_names);
}
// Serialize a virtual machine instruction. It creates a list that contains the
// hash, opcode, and all fields of an instruction.
//
// For example, the function signature used to create an `AllocTensor`
// instruction is:
// Instruction AllocTensor(std::vector<Index> shape, DLDataType dtype, RegName dst)
//
// The serialized form will be:
// `hash 5 dtype.code dtype.bits dtype.lanes ndim dst_register val1 val2 ... valn`
//
// where hash is the hash of serialized instruction that is computed internally
// by the `VMInstructionExecutable`. It is used for sanity check before decoding.
// 5 shows opcode of `AllocTensor`, `(dtype.code dtype.bits dtype.lanes)`
// represents a `DLDataType`, `ndim` is the number of dimensions, `dst_register`
// is the destination register, and the rest of it together indicates the shape
// of the tensor to be allocated.
VMInstructionSerializer SerializeInstruction(const Instruction& instr) {
std::vector<Index> fields;
// Save the opcode.
DLOG(INFO) << "Serializing: " << instr << std::endl;
switch (instr.op) {
case Opcode::Move: {
// Number of fields = 2
fields.assign({instr.from, instr.dst});
break;
}
case Opcode::Ret: {
// Number of fields = 1
fields.push_back(instr.result);
break;
}
case Opcode::Fatal: {
// Number of fields = 0
break;
}
case Opcode::InvokePacked: {
// Number of fields = 3 + instr.arity
// Note that arity includes both input arguments and outputs. We will
// put all the `arity` number of fields in the end for serialization.
fields.assign({instr.packed_index, instr.arity, instr.output_size});
// Save the args.
fields.insert(fields.end(), instr.packed_args, instr.packed_args + instr.arity);
break;
}
case Opcode::AllocTensor: {
// Number of fields = 7 + instr.alloc_tensor.ndim
fields.push_back(instr.alloc_tensor.storage);
fields.push_back(instr.alloc_tensor.offset);
// Save `DLDataType` and the dst register.
const auto& dtype = instr.alloc_tensor.dtype;
fields.push_back(dtype.code);
fields.push_back(dtype.bits);
fields.push_back(dtype.lanes);
// The number of dimensions is not needed for constructing an
// `AllocTensor` instruction as it equals to the length of the `shape`
// vector. However, we save it to conveniently deserialize the instruction
// because we will know how many fields are needed by the `shape` argument.
fields.push_back(instr.alloc_tensor.ndim);
fields.push_back(instr.dst);
// Save the shape of the tensor.
// Note that this field is rotated to the end of the list.
fields.insert(fields.end(), instr.alloc_tensor.shape,
instr.alloc_tensor.shape + instr.alloc_tensor.ndim);
break;
}
case Opcode::AllocTensorReg: {
// Number of fields = 7
fields.push_back(instr.alloc_tensor_reg.storage);
fields.push_back(instr.alloc_tensor_reg.offset);
fields.push_back(instr.alloc_tensor_reg.shape_register);
// Save `DLDataType` and the dst register.
const auto& dtype = instr.alloc_tensor_reg.dtype;
fields.push_back(dtype.code);
fields.push_back(dtype.bits);
fields.push_back(dtype.lanes);
fields.push_back(instr.dst);
break;
}
case Opcode::AllocStorage: {
fields.push_back(instr.alloc_storage.allocation_size);
fields.push_back(instr.alloc_storage.alignment);
// Save `DLDataType` and the dst register.
const auto& dtype = instr.alloc_storage.dtype_hint;
fields.push_back(dtype.code);
fields.push_back(dtype.bits);
fields.push_back(dtype.lanes);
fields.push_back(instr.dst);
break;
}
case Opcode::AllocADT: {
// Number of fields = 3 + instr.num_fields
fields.assign({instr.constructor_tag, instr.num_fields, instr.dst});
// Save the fields.
fields.insert(fields.end(), instr.datatype_fields, instr.datatype_fields + instr.num_fields);
break;
}
case Opcode::AllocClosure: {
// Number of fields = 3 + instr.num_freevar
fields.assign({instr.clo_index, instr.num_freevar, instr.dst});
// Save the free vars.
fields.insert(fields.end(), instr.free_vars, instr.free_vars + instr.num_freevar);
break;
}
case Opcode::If: {
// Number of fields = 4
fields.assign({instr.if_op.test, instr.if_op.target, instr.if_op.true_offset,
instr.if_op.false_offset});
break;
}
case Opcode::Invoke: {
// Number of fields = 3 + instr.num_args
fields.assign({instr.func_index, instr.num_args, instr.dst});
// Save the args.
fields.insert(fields.end(), instr.invoke_args_registers,
instr.invoke_args_registers + instr.num_args);
break;
}
case Opcode::InvokeClosure: {
// Number of fields = 3 + instr.num_closure_args
fields.assign({instr.closure, instr.num_closure_args, instr.dst});
// Save the args.
fields.insert(fields.end(), instr.closure_args, instr.closure_args + instr.num_closure_args);
break;
}
case Opcode::LoadConst: {
// Number of fields = 2
fields.assign({instr.const_index, instr.dst});
break;
}
case Opcode::LoadConsti: {
// Number of fields = 2
fields.assign({instr.load_consti.val, instr.dst});
break;
}
case Opcode::GetField: {
// Number of fields = 3
fields.assign({instr.object, instr.field_index, instr.dst});
break;
}
case Opcode::GetTag: {
// Number of fields = 2
fields.assign({instr.get_tag.object, instr.dst});
break;
}
case Opcode::Goto: {
// Number of fields = 1
fields.push_back(instr.pc_offset);
break;
}
default:
LOG(FATAL) << "Invalid opcode" << static_cast<int>(instr.op);
break;
}
return VMInstructionSerializer(static_cast<Index>(instr.op), fields);
}
void Executable::SaveCodeSection(dmlc::Stream* strm) {
// Save the number of functions.
strm->Write(static_cast<uint64_t>(this->functions.size()));
for (const auto& func : this->functions) {
// Save the function info.
VMFunctionSerializer func_format(func.name, func.register_file_size, func.instructions.size(),
func.params);
func_format.Save(strm);
// Serialize each instruction.
for (const auto& instr : func.instructions) {
const auto& serialized_instr = SerializeInstruction(instr);
serialized_instr.Save(strm);
}
}
}
void LoadHeader(dmlc::Stream* strm) {
// Check header.
uint64_t header;
STREAM_CHECK(strm->Read(&header), "header");
STREAM_CHECK(header == kTVMVMBytecodeMagic, "header");
// Check version.
std::string version;
STREAM_CHECK(strm->Read(&version), "version");
STREAM_CHECK(version == TVM_VERSION, "version");
}
runtime::Module Executable::Load(const std::string& code, const runtime::Module lib) {
auto exec = make_object<Executable>();
exec->lib = lib;
exec->code_ = code;
dmlc::MemoryStringStream strm(&exec->code_);
// Load header.
LoadHeader(&strm);
// Global section.
exec->LoadGlobalSection(&strm);
// Constant section.
exec->LoadConstantSection(&strm);
// Primitive names that will be invoked by `InvokePacked` instructions.
exec->LoadPrimitiveOpNames(&strm);
// Code section.
exec->LoadCodeSection(&strm);
return runtime::Module(exec);
}
void Executable::LoadGlobalSection(dmlc::Stream* strm) {
std::vector<std::string> globals;
STREAM_CHECK(strm->Read(&globals), "global");
for (size_t i = 0; i < globals.size(); i++) {
this->global_map.insert({globals[i], i});
}
}
void Executable::LoadConstantSection(dmlc::Stream* strm) {
uint64_t sz;
// Load the number of constants.
STREAM_CHECK(strm->Read(&sz, sizeof(sz)), "constant");
size_t size = static_cast<size_t>(sz);
// Load each of the constants.
for (size_t i = 0; i < size; i++) {
runtime::NDArray constant;
STREAM_CHECK(constant.Load(strm), "constant");
this->constants.push_back(constant);
}
}
void Executable::LoadPrimitiveOpNames(dmlc::Stream* strm) {
std::vector<std::string> primitive_names;
STREAM_CHECK(strm->Read(&primitive_names), "primitive name");
for (size_t i = 0; i < primitive_names.size(); i++) {
this->primitive_map.insert({primitive_names[i], i});
}
}
// Extract the `cnt` number of fields started at `start` from the list
// `instr_fields`.
inline std::vector<Index> ExtractFields(const std::vector<Index>& instr_fields, Index start,
Index cnt) {
CHECK_LE(static_cast<size_t>(start + cnt), instr_fields.size());
std::vector<Index> ret;
for (auto i = start; i < start + cnt; i++) {
ret.push_back(instr_fields[i]);
}
return ret;
}
Instruction DeserializeInstruction(const VMInstructionSerializer& instr) {
Opcode opcode = static_cast<Opcode>(instr.opcode);
switch (opcode) {
case Opcode::Move: {
// Number of fields = 2
DCHECK_EQ(instr.fields.size(), 2U);
return Instruction::Move(instr.fields[0], instr.fields[1]);
}
case Opcode::Ret: {
// Number of fields = 1
DCHECK_EQ(instr.fields.size(), 1U);
return Instruction::Ret(instr.fields[0]);
}
case Opcode::Fatal: {
// Number of fields = 0
DCHECK(instr.fields.empty());
return Instruction::Fatal();
}
case Opcode::InvokePacked: {
// Number of fields = 3 + instr.arity
DCHECK_GE(instr.fields.size(), 3U);
DCHECK_EQ(instr.fields.size(), 3U + static_cast<size_t>(instr.fields[1]));
Index packed_index = instr.fields[0];
Index arity = instr.fields[1];
Index output_size = instr.fields[2];
std::vector<RegName> args = ExtractFields(instr.fields, 3, arity);
return Instruction::InvokePacked(packed_index, arity, output_size, args);
}
case Opcode::AllocTensor: {
// Number of fields = 7 + instr.alloc_tensor.ndim
DCHECK_GE(instr.fields.size(), 7U);
DCHECK_EQ(instr.fields.size(), 7U + static_cast<size_t>(instr.fields[5]));
RegName storage_reg = instr.fields[0];
RegName offset = instr.fields[1];
DLDataType dtype;
dtype.code = instr.fields[2];
dtype.bits = instr.fields[3];
dtype.lanes = instr.fields[4];
Index ndim = instr.fields[5];
RegName dst = instr.fields[6];
std::vector<Index> shape = ExtractFields(instr.fields, 7, ndim);
return Instruction::AllocTensor(storage_reg, offset, shape, dtype, dst);
}
case Opcode::AllocTensorReg: {
// Number of fields = 7
DCHECK_EQ(instr.fields.size(), 7U);
RegName storage_reg = instr.fields[0];
RegName offset = instr.fields[1];
Index shape_register = instr.fields[2];
DLDataType dtype;
dtype.code = instr.fields[3];
dtype.bits = instr.fields[4];
dtype.lanes = instr.fields[5];
RegName dst = instr.fields[6];
return Instruction::AllocTensorReg(storage_reg, offset, shape_register, dtype, dst);
}
case Opcode::AllocADT: {
// Number of fields = 3 + instr.num_fields
DCHECK_GE(instr.fields.size(), 3U);
DCHECK_EQ(instr.fields.size(), 3U + static_cast<size_t>(instr.fields[1]));
Index constructor_tag = instr.fields[0];
Index num_fields = instr.fields[1];
RegName dst = instr.fields[2];
std::vector<Index> fields = ExtractFields(instr.fields, 3, num_fields);
return Instruction::AllocADT(constructor_tag, num_fields, fields, dst);
}
case Opcode::AllocClosure: {
// Number of fields = 3 + instr.num_freevar
DCHECK_GE(instr.fields.size(), 3U);
DCHECK_EQ(instr.fields.size(), 3U + static_cast<size_t>(instr.fields[1]));
Index clo_index = instr.fields[0];
Index num_freevar = instr.fields[1];
RegName dst = instr.fields[2];
std::vector<Index> free_vars = ExtractFields(instr.fields, 3, num_freevar);
return Instruction::AllocClosure(clo_index, num_freevar, free_vars, dst);
}
case Opcode::AllocStorage: {
DCHECK_GE(instr.fields.size(), 6U);
Index allocation_size = instr.fields[0];
Index alignment = instr.fields[1];
DLDataType dtype;
dtype.code = instr.fields[2];
dtype.bits = instr.fields[3];
dtype.lanes = instr.fields[4];
RegName dst = instr.fields[5];
return Instruction::AllocStorage(allocation_size, alignment, dtype, dst);
}
case Opcode::If: {
// Number of fields = 4
DCHECK_EQ(instr.fields.size(), 4U);
Index test = instr.fields[0];
Index target = instr.fields[1];
Index true_offset = instr.fields[2];
Index false_offset = instr.fields[3];
return Instruction::If(test, target, true_offset, false_offset);
}
case Opcode::Invoke: {
// Number of fields = 3 + instr.num_args
DCHECK_GE(instr.fields.size(), 3U);
DCHECK_EQ(instr.fields.size(), 3U + static_cast<size_t>(instr.fields[1]));
Index func_index = instr.fields[0];
Index num_args = instr.fields[1];
RegName dst = instr.fields[2];
std::vector<Index> args = ExtractFields(instr.fields, 3, num_args);
return Instruction::Invoke(func_index, args, dst);
}
case Opcode::InvokeClosure: {
// Number of fields = 3 + instr.num_closure_args
DCHECK_GE(instr.fields.size(), 3U);
DCHECK_EQ(instr.fields.size(), 3U + static_cast<size_t>(instr.fields[1]));
Index closure = instr.fields[0];
Index num_closure_args = instr.fields[1];
RegName dst = instr.fields[2];
std::vector<Index> args = ExtractFields(instr.fields, 3, num_closure_args);
return Instruction::InvokeClosure(closure, args, dst);
}
case Opcode::LoadConst: {
// Number of fields = 2
DCHECK_EQ(instr.fields.size(), 2U);
return Instruction::LoadConst(instr.fields[0], instr.fields[1]);
}
case Opcode::LoadConsti: {
// Number of fields = 2
DCHECK_EQ(instr.fields.size(), 2U);
return Instruction::LoadConsti(instr.fields[0], instr.fields[1]);
}
case Opcode::GetField: {
// Number of fields = 3
DCHECK_EQ(instr.fields.size(), 3U);
return Instruction::GetField(instr.fields[0], instr.fields[1], instr.fields[2]);
}
case Opcode::GetTag: {
// Number of fields = 2
DCHECK_EQ(instr.fields.size(), 2U);
return Instruction::GetTag(instr.fields[0], instr.fields[1]);
}
case Opcode::Goto: {
// Number of fields = 1
DCHECK_EQ(instr.fields.size(), 1U);
return Instruction::Goto(instr.fields[0]);
}
default:
LOG(FATAL) << "Invalid opcode" << instr.opcode;
return Instruction();
}
}
void Executable::LoadCodeSection(dmlc::Stream* strm) {
// Load the number of functions.
uint64_t sz;
STREAM_CHECK(strm->Read(&sz, sizeof(sz)), "code");
size_t num_funcs = static_cast<size_t>(sz);
this->functions.resize(num_funcs);
for (size_t i = 0; i < num_funcs; i++) {
// Load the function info.
VMFunctionSerializer loaded_func;
STREAM_CHECK(loaded_func.Load(strm), "code/function");
// Load the instructions.
std::vector<Instruction> instructions;
for (size_t j = 0; j < loaded_func.num_instructions; j++) {
VMInstructionSerializer instr;
std::vector<Index> instr_fields;
STREAM_CHECK(instr.Load(strm), "code/instruction");
instructions.push_back(DeserializeInstruction(instr));
}
// Create the VM function.
VMFunction vm_func = VMFunction(loaded_func.name, loaded_func.params, instructions,
loaded_func.register_file_size);
auto it = this->global_map.find(loaded_func.name);
CHECK(it != this->global_map.end());
CHECK_LE(it->second, this->global_map.size());
this->functions[it->second] = vm_func;
}
}
TVM_REGISTER_GLOBAL("runtime.GetNumOfGlobals").set_body([](TVMArgs args, TVMRetValue* rv) {
runtime::Module mod = args[0];
const auto* exec = dynamic_cast<Executable*>(mod.operator->());
CHECK(exec);
*rv = static_cast<int>(exec->global_map.size());
});
TVM_REGISTER_GLOBAL("runtime.GetGlobalFields").set_body([](TVMArgs args, TVMRetValue* rv) {
runtime::Module mod = args[0];
const auto* exec = dynamic_cast<Executable*>(mod.operator->());
CHECK(exec);
int idx = args[1];
std::vector<std::pair<std::string, Index> > globals(exec->global_map.begin(),
exec->global_map.end());
auto comp = [](const std::pair<std::string, Index>& a, const std::pair<std::string, Index>& b) {
return a.second < b.second;
};
std::sort(globals.begin(), globals.end(), comp);
CHECK_LT(idx, globals.size());
*rv = globals[idx].first;
});
TVM_REGISTER_GLOBAL("runtime.GetNumOfPrimitives").set_body([](TVMArgs args, TVMRetValue* rv) {
runtime::Module mod = args[0];
const auto* exec = dynamic_cast<Executable*>(mod.operator->());
CHECK(exec);
*rv = static_cast<int>(exec->primitive_map.size());
});
TVM_REGISTER_GLOBAL("runtime.GetPrimitiveFields").set_body([](TVMArgs args, TVMRetValue* rv) {
runtime::Module mod = args[0];
const auto* exec = dynamic_cast<Executable*>(mod.operator->());
CHECK(exec);
int idx = args[1];
CHECK_GE(idx, 0);
CHECK_LT(idx, exec->primitive_map.size());
for (const auto& it : exec->primitive_map) {
if (idx == static_cast<int>(it.second)) {
*rv = it.first;
break;
}
}
});
TVM_REGISTER_GLOBAL("runtime.Load_Executable")
.set_body_typed([](std::string code, runtime::Module lib) {
return Executable::Load(code, lib);
});
} // namespace vm
} // namespace runtime
} // namespace tvm