mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-18 19:20:05 +00:00
3f19c2031a
Fixes a bug at the same time. In `UpdateDefUse`, if the definition already exists, we are not suppose to analyse it again. When you do the entries for the definition are deleted, and we don't want that. The check for this was wrong.
50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
// Copyright (c) 2018 Google LLC
|
|
//
|
|
// 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 LIBSPIRV_OPT_SIMPLIFICATION_PASS_H_
|
|
#define LIBSPIRV_OPT_SIMPLIFICATION_PASS_H_
|
|
|
|
#include "function.h"
|
|
#include "ir_context.h"
|
|
#include "pass.h"
|
|
|
|
namespace spvtools {
|
|
namespace opt {
|
|
|
|
// See optimizer.hpp for documentation.
|
|
class SimplificationPass : public Pass {
|
|
public:
|
|
const char* name() const override { return "simplify-instructions"; }
|
|
Status Process(ir::IRContext*) override;
|
|
virtual ir::IRContext::Analysis GetPreservedAnalyses() override {
|
|
return ir::IRContext::kAnalysisDefUse |
|
|
ir::IRContext::kAnalysisInstrToBlockMapping |
|
|
ir::IRContext::kAnalysisDecorations |
|
|
ir::IRContext::kAnalysisCombinators | ir::IRContext::kAnalysisCFG |
|
|
ir::IRContext::kAnalysisDominatorAnalysis |
|
|
ir::IRContext::kAnalysisNameMap;
|
|
}
|
|
|
|
private:
|
|
// Returns true if the module was changed. The simplifier is called on every
|
|
// instruction in |function| until nothing else in the function can be
|
|
// simplified.
|
|
bool SimplifyFunction(ir::Function* function);
|
|
};
|
|
|
|
} // namespace opt
|
|
} // namespace spvtools
|
|
|
|
#endif // LIBSPIRV_OPT_SIMPLIFICATION_PASS_H_
|