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// Copyright (c) 2017 Google Inc.
//
// Licensed 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.
#ifndef SOURCE_OPT_FEATURE_MANAGER_H_
#define SOURCE_OPT_FEATURE_MANAGER_H_
#include "source/assembly_grammar.h"
#include "source/extensions.h"
#include "source/opt/module.h"
namespace spvtools {
namespace opt {
// Tracks features enabled by a module. The IRContext has a FeatureManager.
class FeatureManager {
public:
explicit FeatureManager(const AssemblyGrammar& grammar) : grammar_(grammar) {}
// Returns true if |ext| is an enabled extension in the module.
bool HasExtension(Extension ext) const { return extensions_.Contains(ext); }
// Removes the given |extension| from the current FeatureManager.
void RemoveExtension(Extension extension);
// Returns true if |cap| is an enabled capability in the module.
bool HasCapability(spv::Capability cap) const {
return capabilities_.Contains(cap);
}
// Removes the given |capability| from the current FeatureManager.
void RemoveCapability(spv::Capability capability);
// Analyzes |module| and records enabled extensions and capabilities.
void Analyze(Module* module);
CapabilitySet* GetCapabilities() { return &capabilities_; }
const CapabilitySet* GetCapabilities() const { return &capabilities_; }
uint32_t GetExtInstImportId_GLSLstd450() const {
return extinst_importid_GLSLstd450_;
}
uint32_t GetExtInstImportId_OpenCL100DebugInfo() const {
return extinst_importid_OpenCL100DebugInfo_;
}
uint32_t GetExtInstImportId_Shader100DebugInfo() const {
return extinst_importid_Shader100DebugInfo_;
}
friend bool operator==(const FeatureManager& a, const FeatureManager& b);
friend bool operator!=(const FeatureManager& a, const FeatureManager& b) {
return !(a == b);
}
// Adds the given |capability| and all implied capabilities into the current
// FeatureManager.
void AddCapability(spv::Capability capability);
// Add the extension |ext| to the feature manager.
void AddExtension(Instruction* ext);
// Analyzes |module| and records imported external instruction sets.
void AddExtInstImportIds(Module* module);
private:
// Analyzes |module| and records enabled extensions.
void AddExtensions(Module* module);
// Analyzes |module| and records enabled capabilities.
void AddCapabilities(Module* module);
// Auxiliary object for querying SPIR-V grammar facts.
const AssemblyGrammar& grammar_;
// The enabled extensions.
ExtensionSet extensions_;
// The enabled capabilities.
CapabilitySet capabilities_;
// Common external instruction import ids, cached for performance.
uint32_t extinst_importid_GLSLstd450_ = 0;
// Common OpenCL100DebugInfo external instruction import ids, cached
// for performance.
uint32_t extinst_importid_OpenCL100DebugInfo_ = 0;
// Common NonSemanticShader100DebugInfo external instruction import ids,
// cached for performance.
uint32_t extinst_importid_Shader100DebugInfo_ = 0;
};
} // namespace opt
} // namespace spvtools
#endif // SOURCE_OPT_FEATURE_MANAGER_H_
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