mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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87 lines
3.1 KiB
C++
87 lines
3.1 KiB
C++
// Copyright (c) 2018 The Khronos Group Inc.
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// Copyright (c) 2018 Valve Corporation
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// Copyright (c) 2018 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_PROPAGATE_LINES_PASS_H_
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#define SOURCE_OPT_PROPAGATE_LINES_PASS_H_
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#include "source/opt/function.h"
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#include "source/opt/ir_context.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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namespace {
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// Constructor Parameters
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static const int kLinesPropagateLines = 0;
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static const int kLinesEliminateDeadLines = 1;
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} // anonymous namespace
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// See optimizer.hpp for documentation.
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class ProcessLinesPass : public Pass {
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using LineProcessFunction =
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std::function<bool(Instruction*, uint32_t*, uint32_t*, uint32_t*)>;
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public:
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ProcessLinesPass(uint32_t func_id);
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~ProcessLinesPass() override = default;
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const char* name() const override { return "propagate-lines"; }
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// See optimizer.hpp for this pass' user documentation.
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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::kAnalysisCFG | IRContext::kAnalysisDominatorAnalysis |
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IRContext::kAnalysisNameMap;
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}
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private:
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// If |inst| has no debug line instruction, create one with
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// |file_id, line, col|. If |inst| has debug line instructions, set
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// |file_id, line, col| from the last. |file_id| equals 0 indicates no line
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// info is available. Return true if |inst| modified.
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bool PropagateLine(Instruction* inst, uint32_t* file_id, uint32_t* line,
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uint32_t* col);
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// If last debug line instruction of |inst| matches |file_id, line, col|,
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// delete all debug line instructions of |inst|. If they do not match,
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// replace all debug line instructions of |inst| with new line instruction
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// set from |file_id, line, col|. If |inst| has no debug line instructions,
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// do not modify |inst|. |file_id| equals 0 indicates no line info is
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// available. Return true if |inst| modified.
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bool EliminateDeadLines(Instruction* inst, uint32_t* file_id, uint32_t* line,
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uint32_t* col);
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// Apply lpfn() to all type, constant, global variable and function
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// instructions in their physical order.
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bool ProcessLines();
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// A function that calls either PropagateLine or EliminateDeadLines.
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// Initialized by the class constructor.
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LineProcessFunction line_process_func_;
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};
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} // namespace opt
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} // namespace spvtools
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#endif // SOURCE_OPT_PROPAGATE_LINES_PASS_H_
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