mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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85 lines
3.0 KiB
C++
85 lines
3.0 KiB
C++
// Copyright (c) 2016 Google Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and/or associated documentation files (the
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// "Materials"), to deal in the Materials without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Materials, and to
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// permit persons to whom the Materials are furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Materials.
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//
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// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
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// KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
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// SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
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// https://www.khronos.org/registry/
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//
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// THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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// MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
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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 <cassert>
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#include <memory>
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#include <vector>
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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 added.
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//
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// TODO(antiagainst): The pass manager is fairly simple right now. Eventually it
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// should support pass dependency, common functionality (like def-use analysis)
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// sharing, etc.
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class PassManager {
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public:
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// Adds a 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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template <typename PassT>
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void AddPass() {
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passes_.emplace_back(new PassT);
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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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assert(index < passes_.size() && "index out of bound");
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return passes_[index].get();
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}
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// Runs all passes on the given |module|.
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void Run(ir::Module* module) {
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for (const auto& pass : passes_) {
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// TODO(antiagainst): Currently we ignore the return value of the pass,
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// which indicates whether the module has been modified, since there is
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// nothing shared between passes right now.
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pass->Process(module);
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}
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}
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private:
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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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