mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-18 11:10:05 +00:00
06cdb96984
Implementation of the simplification pass. - Create pass that calls the instruction folder on each instruction and propagate instructions that fold to a copy. This will do copy propagation as well. - Did not use the propagator engine because I want to modify the instruction as we go along. - Change folding to not allocate new instructions, but make changes in place. This change had a big impact on compile time. - Add simplification pass to the legalization passes in place of insert-extract elimination. - Added test cases for new folding rules. - Added tests for the simplification pass - Added a method to the CFG to apply a function to the basic blocks in reverse post order. Contributes to #1164.
42 lines
1.3 KiB
C++
42 lines
1.3 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;
|
|
|
|
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_
|