281 lines
9.3 KiB
C++
281 lines
9.3 KiB
C++
// Copyright (c) 2016 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "source/opt/module.h"
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#include <algorithm>
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#include <cstring>
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#include <ostream>
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#include "source/operand.h"
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#include "source/opt/ir_context.h"
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#include "source/opt/reflect.h"
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namespace spvtools {
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namespace opt {
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uint32_t Module::TakeNextIdBound() {
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if (context()) {
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if (id_bound() >= context()->max_id_bound()) {
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return 0;
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}
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} else if (id_bound() >= kDefaultMaxIdBound) {
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return 0;
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}
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return header_.bound++;
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}
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std::vector<Instruction*> Module::GetTypes() {
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std::vector<Instruction*> type_insts;
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for (auto& inst : types_values_) {
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if (IsTypeInst(inst.opcode())) type_insts.push_back(&inst);
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}
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return type_insts;
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}
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std::vector<const Instruction*> Module::GetTypes() const {
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std::vector<const Instruction*> type_insts;
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for (auto& inst : types_values_) {
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if (IsTypeInst(inst.opcode())) type_insts.push_back(&inst);
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}
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return type_insts;
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}
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std::vector<Instruction*> Module::GetConstants() {
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std::vector<Instruction*> const_insts;
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for (auto& inst : types_values_) {
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if (IsConstantInst(inst.opcode())) const_insts.push_back(&inst);
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}
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return const_insts;
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}
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std::vector<const Instruction*> Module::GetConstants() const {
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std::vector<const Instruction*> const_insts;
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for (auto& inst : types_values_) {
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if (IsConstantInst(inst.opcode())) const_insts.push_back(&inst);
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}
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return const_insts;
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}
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uint32_t Module::GetGlobalValue(SpvOp opcode) const {
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for (auto& inst : types_values_) {
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if (inst.opcode() == opcode) return inst.result_id();
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}
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return 0;
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}
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void Module::AddGlobalValue(SpvOp opcode, uint32_t result_id,
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uint32_t type_id) {
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std::unique_ptr<Instruction> newGlobal(
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new Instruction(context(), opcode, type_id, result_id, {}));
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AddGlobalValue(std::move(newGlobal));
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}
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void Module::ForEachInst(const std::function<void(Instruction*)>& f,
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bool run_on_debug_line_insts) {
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#define DELEGATE(list) list.ForEachInst(f, run_on_debug_line_insts)
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DELEGATE(capabilities_);
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DELEGATE(extensions_);
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DELEGATE(ext_inst_imports_);
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if (memory_model_) memory_model_->ForEachInst(f, run_on_debug_line_insts);
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DELEGATE(entry_points_);
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DELEGATE(execution_modes_);
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DELEGATE(debugs1_);
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DELEGATE(debugs2_);
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DELEGATE(debugs3_);
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DELEGATE(ext_inst_debuginfo_);
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DELEGATE(annotations_);
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DELEGATE(types_values_);
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for (auto& i : functions_) {
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i->ForEachInst(f, run_on_debug_line_insts,
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/* run_on_non_semantic_insts = */ true);
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}
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#undef DELEGATE
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}
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void Module::ForEachInst(const std::function<void(const Instruction*)>& f,
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bool run_on_debug_line_insts) const {
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#define DELEGATE(i) i.ForEachInst(f, run_on_debug_line_insts)
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for (auto& i : capabilities_) DELEGATE(i);
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for (auto& i : extensions_) DELEGATE(i);
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for (auto& i : ext_inst_imports_) DELEGATE(i);
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if (memory_model_)
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static_cast<const Instruction*>(memory_model_.get())
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->ForEachInst(f, run_on_debug_line_insts);
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for (auto& i : entry_points_) DELEGATE(i);
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for (auto& i : execution_modes_) DELEGATE(i);
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for (auto& i : debugs1_) DELEGATE(i);
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for (auto& i : debugs2_) DELEGATE(i);
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for (auto& i : debugs3_) DELEGATE(i);
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for (auto& i : annotations_) DELEGATE(i);
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for (auto& i : types_values_) DELEGATE(i);
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for (auto& i : ext_inst_debuginfo_) DELEGATE(i);
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for (auto& i : functions_) {
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static_cast<const Function*>(i.get())->ForEachInst(
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f, run_on_debug_line_insts,
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/* run_on_non_semantic_insts = */ true);
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}
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if (run_on_debug_line_insts) {
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for (auto& i : trailing_dbg_line_info_) DELEGATE(i);
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}
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#undef DELEGATE
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}
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void Module::ToBinary(std::vector<uint32_t>* binary, bool skip_nop) const {
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binary->push_back(header_.magic_number);
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binary->push_back(header_.version);
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// TODO(antiagainst): should we change the generator number?
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binary->push_back(header_.generator);
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binary->push_back(header_.bound);
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binary->push_back(header_.reserved);
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size_t bound_idx = binary->size() - 2;
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DebugScope last_scope(kNoDebugScope, kNoInlinedAt);
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const Instruction* last_line_inst = nullptr;
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bool between_merge_and_branch = false;
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bool between_label_and_phi_var = false;
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auto write_inst = [binary, skip_nop, &last_scope, &last_line_inst,
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&between_merge_and_branch, &between_label_and_phi_var,
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this](const Instruction* i) {
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// Skip emitting line instructions between merge and branch instructions.
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auto opcode = i->opcode();
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if (between_merge_and_branch && i->IsLineInst()) {
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return;
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}
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between_merge_and_branch = false;
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if (last_line_inst != nullptr) {
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// If the current instruction is OpLine or DebugLine and it is the same
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// as the last line instruction that is still effective (can be applied
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// to the next instruction), we skip writing the current instruction.
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if (i->IsLine()) {
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uint32_t operand_index = 0;
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if (last_line_inst->WhileEachInOperand(
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[&operand_index, i](const uint32_t* word) {
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assert(i->NumInOperandWords() > operand_index);
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return *word == i->GetSingleWordInOperand(operand_index++);
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})) {
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return;
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}
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} else if (!i->IsNoLine() && i->dbg_line_insts().empty()) {
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// If the current instruction does not have the line information,
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// the last line information is not effective any more. Emit OpNoLine
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// or DebugNoLine to specify it.
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uint32_t shader_set_id = context()
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->get_feature_mgr()
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->GetExtInstImportId_Shader100DebugInfo();
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if (shader_set_id != 0) {
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binary->push_back((5 << 16) | static_cast<uint16_t>(SpvOpExtInst));
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binary->push_back(context()->get_type_mgr()->GetVoidTypeId());
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binary->push_back(context()->TakeNextId());
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binary->push_back(shader_set_id);
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binary->push_back(NonSemanticShaderDebugInfo100DebugNoLine);
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} else {
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binary->push_back((1 << 16) | static_cast<uint16_t>(SpvOpNoLine));
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}
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last_line_inst = nullptr;
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}
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}
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if (opcode == SpvOpLabel) {
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between_label_and_phi_var = true;
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} else if (opcode != SpvOpVariable && opcode != SpvOpPhi &&
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!spvtools::opt::IsOpLineInst(opcode)) {
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between_label_and_phi_var = false;
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}
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if (!(skip_nop && i->IsNop())) {
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const auto& scope = i->GetDebugScope();
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if (scope != last_scope) {
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// Can only emit nonsemantic instructions after all phi instructions
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// in a block so don't emit scope instructions before phi instructions
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// for NonSemantic.Shader.DebugInfo.100.
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if (!between_label_and_phi_var ||
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context()
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->get_feature_mgr()
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->GetExtInstImportId_OpenCL100DebugInfo()) {
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// Emit DebugScope |scope| to |binary|.
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auto dbg_inst = ext_inst_debuginfo_.begin();
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scope.ToBinary(dbg_inst->type_id(), context()->TakeNextId(),
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dbg_inst->GetSingleWordOperand(2), binary);
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}
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last_scope = scope;
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}
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i->ToBinaryWithoutAttachedDebugInsts(binary);
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}
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// Update the last line instruction.
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if (spvOpcodeIsBlockTerminator(opcode) || i->IsNoLine()) {
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last_line_inst = nullptr;
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} else if (opcode == SpvOpLoopMerge || opcode == SpvOpSelectionMerge) {
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between_merge_and_branch = true;
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last_line_inst = nullptr;
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} else if (i->IsLine()) {
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last_line_inst = i;
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}
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};
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ForEachInst(write_inst, true);
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// We create new instructions for DebugScope and DebugNoLine. The bound must
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// be updated.
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binary->data()[bound_idx] = header_.bound;
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}
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uint32_t Module::ComputeIdBound() const {
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uint32_t highest = 0;
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ForEachInst(
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[&highest](const Instruction* inst) {
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for (const auto& operand : *inst) {
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if (spvIsIdType(operand.type)) {
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highest = std::max(highest, operand.words[0]);
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}
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}
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},
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true /* scan debug line insts as well */);
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return highest + 1;
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}
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bool Module::HasExplicitCapability(uint32_t cap) {
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for (auto& ci : capabilities_) {
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uint32_t tcap = ci.GetSingleWordOperand(0);
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if (tcap == cap) {
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return true;
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}
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}
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return false;
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}
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uint32_t Module::GetExtInstImportId(const char* extstr) {
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for (auto& ei : ext_inst_imports_)
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if (!strcmp(extstr,
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reinterpret_cast<const char*>(&(ei.GetInOperand(0).words[0]))))
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return ei.result_id();
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return 0;
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}
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std::ostream& operator<<(std::ostream& str, const Module& module) {
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module.ForEachInst([&str](const Instruction* inst) {
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str << *inst;
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if (inst->opcode() != SpvOpFunctionEnd) {
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str << std::endl;
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}
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});
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return str;
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}
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} // namespace opt
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} // namespace spvtools
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