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https://github.com/KhronosGroup/SPIRV-Tools
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114af21994
Also convert some uses of assert() in optimization code to use SPIRV_ASSERT(), SPIRV_UNIMPLEMENTED(), or SPIRV_UNREACHABLE() accordingly.
81 lines
2.6 KiB
C++
81 lines
2.6 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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#ifndef LIBSPIRV_OPT_PASS_MANAGER_H_
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#define LIBSPIRV_OPT_PASS_MANAGER_H_
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#include <memory>
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#include <vector>
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#include "log.h"
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#include "message.h"
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#include "module.h"
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#include "passes.h"
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namespace spvtools {
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namespace opt {
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// The pass manager, responsible for tracking and running passes.
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// Clients should first call AddPass() to add passes and then call Run()
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// to run on a module. Passes are executed in the exact order of addition.
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class PassManager {
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public:
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// Constructs a pass manager with the given message consumer.
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explicit PassManager(MessageConsumer c) : consumer_(std::move(c)) {}
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// Adds an externally constructed pass.
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void AddPass(std::unique_ptr<Pass> pass) {
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passes_.push_back(std::move(pass));
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}
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// Uses the argument |args| to construct a pass instance of type |T|, and adds
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// the pass instance to this pass manger. The pass added will use this pass
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// manager's message consumer.
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template <typename T, typename... Args>
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void AddPass(Args&&... args) {
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passes_.emplace_back(new T(consumer_, std::forward<Args>(args)...));
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}
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// Returns the number of passes added.
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uint32_t NumPasses() const { return static_cast<uint32_t>(passes_.size()); }
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// Returns a pointer to the |index|th pass added.
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Pass* GetPass(uint32_t index) const {
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SPIRV_ASSERT(consumer_, index < passes_.size(), "index out of bound");
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return passes_[index].get();
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}
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// Returns the message consumer.
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const MessageConsumer& consumer() const { return consumer_; }
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// Runs all passes on the given |module|.
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void Run(ir::Module* module) {
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bool modified = false;
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for (const auto& pass : passes_) {
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modified |= pass->Process(module);
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}
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// Set the Id bound in the header in case a pass forgot to do so.
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if (modified) module->SetIdBound(module->ComputeIdBound());
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}
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private:
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// Consumer for messages.
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MessageConsumer consumer_;
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// A vector of passes. Order matters.
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std::vector<std::unique_ptr<Pass>> passes_;
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};
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} // namespace opt
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} // namespace spvtools
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#endif // LIBSPIRV_OPT_PASS_MANAGER_H_
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