mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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eda2cfbe12
This Cl cleans up the include paths to be relative to the top level directory. Various include-what-you-use fixes have been added.
72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
// Copyright (c) 2017 The Khronos Group Inc.
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// Copyright (c) 2017 Valve Corporation
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// Copyright (c) 2017 LunarG 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_BLOCK_MERGE_PASS_H_
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#define SOURCE_OPT_BLOCK_MERGE_PASS_H_
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#include <algorithm>
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#include <map>
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#include <queue>
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#include <unordered_map>
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#include <unordered_set>
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#include <utility>
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#include "source/opt/basic_block.h"
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#include "source/opt/def_use_manager.h"
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#include "source/opt/ir_context.h"
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#include "source/opt/module.h"
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#include "source/opt/pass.h"
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namespace spvtools {
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namespace opt {
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// See optimizer.hpp for documentation.
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class BlockMergePass : public Pass {
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public:
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BlockMergePass();
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const char* name() const override { return "merge-blocks"; }
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Status Process() override;
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IRContext::Analysis GetPreservedAnalyses() override {
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return IRContext::kAnalysisDefUse |
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IRContext::kAnalysisInstrToBlockMapping |
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IRContext::kAnalysisDecorations | IRContext::kAnalysisCombinators |
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IRContext::kAnalysisNameMap;
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}
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private:
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// Kill any OpName instruction referencing |inst|, then kill |inst|.
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void KillInstAndName(Instruction* inst);
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// Search |func| for blocks which have a single Branch to a block
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// with no other predecessors. Merge these blocks into a single block.
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bool MergeBlocks(Function* func);
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// Returns true if |block| (or |id|) contains a merge instruction.
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bool IsHeader(BasicBlock* block);
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bool IsHeader(uint32_t id);
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// Returns true if |block| (or |id|) is the merge target of a merge
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// instruction.
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bool IsMerge(BasicBlock* block);
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bool IsMerge(uint32_t id);
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};
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} // namespace opt
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} // namespace spvtools
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#endif // SOURCE_OPT_BLOCK_MERGE_PASS_H_
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