mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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78 lines
3.2 KiB
C
78 lines
3.2 KiB
C
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// Copyright (c) 2017 Pierre Moreau
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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_DECORATION_MANAGER_H_
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#define LIBSPIRV_OPT_DECORATION_MANAGER_H_
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#include <unordered_map>
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#include <vector>
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#include "instruction.h"
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#include "module.h"
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namespace spvtools {
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namespace opt {
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namespace analysis {
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// A class for analyzing and managing decorations in an ir::Module.
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class DecorationManager {
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public:
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// Constructs a decoration manager from the given |module|
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DecorationManager(ir::Module* module) { AnalyzeDecorations(module); }
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// Removes all decorations from |id|, which should not be a group ID, except
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// for linkage decorations if |keep_linkage| is set.
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void RemoveDecorationsFrom(uint32_t id, bool keep_linkage);
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// Returns a vector of all decorations affecting |id|. If a group is applied
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// to |id|, the decorations of that group are returned rather than the group
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// decoration instruction. If |include_linkage| is not set, linkage
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// decorations won't be returned.
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std::vector<ir::Instruction*> GetDecorationsFor(uint32_t id,
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bool include_linkage);
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std::vector<const ir::Instruction*> GetDecorationsFor(
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uint32_t id, bool include_linkage) const;
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// Returns whether two IDs have the same decorations. Two SpvOpGroupDecorate
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// instructions that apply the same decorations but to different IDs, still
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// count as being the same.
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bool HaveTheSameDecorations(uint32_t id1, uint32_t id2) const;
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// Returns whether two decorations are the same. SpvOpDecorateId is currently
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// not handled and will return false no matter what.
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bool AreDecorationsTheSame(const ir::Instruction* inst1,
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const ir::Instruction* inst2) const;
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private:
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using IdToDecorationInstsMap =
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std::unordered_map<uint32_t, std::vector<ir::Instruction*>>;
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// Analyzes the defs and uses in the given |module| and populates data
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// structures in this class. Does nothing if |module| is nullptr.
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void AnalyzeDecorations(ir::Module* module);
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template <typename T>
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std::vector<T> InternalGetDecorationsFor(uint32_t id, bool include_linkage);
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// Mapping from ids to the instructions applying a decoration to them. In
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// other words, for each id you get all decoration instructions referencing
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// that id, be it directly (SpvOpDecorate, SpvOpMemberDecorate and
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// SpvOpDecorateId), or indirectly (SpvOpGroupDecorate,
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// SpvOpMemberGroupDecorate).
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IdToDecorationInstsMap id_to_decoration_insts_;
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// Mapping from group ids to all the decoration instructions they apply.
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IdToDecorationInstsMap group_to_decoration_insts_;
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};
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} // namespace analysis
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} // namespace opt
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} // namespace spvtools
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#endif // LIBSPIRV_OPT_DECORATION_MANAGER_H_
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