mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
// Copyright (c) 2017 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 SOURCE_OPT_FEATURE_MANAGER_H_
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#define SOURCE_OPT_FEATURE_MANAGER_H_
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#include "source/assembly_grammar.h"
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#include "source/extensions.h"
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#include "source/opt/module.h"
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namespace spvtools {
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namespace opt {
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// Tracks features enabled by a module. The IRContext has a FeatureManager.
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class FeatureManager {
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public:
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explicit FeatureManager(const AssemblyGrammar& grammar) : grammar_(grammar) {}
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// Returns true if |ext| is an enabled extension in the module.
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bool HasExtension(Extension ext) const { return extensions_.Contains(ext); }
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// Returns true if |cap| is an enabled capability in the module.
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bool HasCapability(SpvCapability cap) const {
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return capabilities_.Contains(cap);
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}
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// Analyzes |module| and records enabled extensions and capabilities.
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void Analyze(Module* module);
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CapabilitySet* GetCapabilities() { return &capabilities_; }
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const CapabilitySet* GetCapabilities() const { return &capabilities_; }
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uint32_t GetExtInstImportId_GLSLstd450() const {
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return extinst_importid_GLSLstd450_;
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}
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friend bool operator==(const FeatureManager& a, const FeatureManager& b);
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friend bool operator!=(const FeatureManager& a, const FeatureManager& b) {
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return !(a == b);
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}
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// Adds the given |capability| and all implied capabilities into the current
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// FeatureManager.
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void AddCapability(SpvCapability capability);
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// Add the extension |ext| to the feature manager.
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void AddExtension(Instruction* ext);
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// Analyzes |module| and records imported external instruction sets.
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void AddExtInstImportIds(Module* module);
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private:
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// Analyzes |module| and records enabled extensions.
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void AddExtensions(Module* module);
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// Analyzes |module| and records enabled capabilities.
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void AddCapabilities(Module* module);
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// Auxiliary object for querying SPIR-V grammar facts.
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const AssemblyGrammar& grammar_;
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// The enabled extensions.
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ExtensionSet extensions_;
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// The enabled capabilities.
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CapabilitySet capabilities_;
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// Common external instruction import ids, cached for performance.
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uint32_t extinst_importid_GLSLstd450_ = 0;
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};
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} // namespace opt
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} // namespace spvtools
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#endif // SOURCE_OPT_FEATURE_MANAGER_H_
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