SPIRV-Tools/source/spirv_reducer_options.h
Paul Thomson 7d1b176c1d
Improve reducer algorithm and other changes (#2472)
Fix #2475. Fix #2476. 

* Improve reducer algorithm: shrink granularity, remove an early return, no lazy initialization, notify pass if binary is interesting, add comments.
* Add fail-on-validation-error option to fail a reduction if an invalid state is reached; useful for tests.
* Set fail-on-validation-error in tests.
* Improve some documentation comments.
* Add Reducer::AddDefaultReductionPasses so tests (and other library consumers) can add the default reduction passes.
* Add CLIMessageConsumer in test_reduce so we can see messages for tricky tests.
* Remove test RemoveUnreferencedInstructionReductionPassTest_ApplyReduction because it was indirectly testing the reduction algorithm, not the RemoveUnreferencedInstruction pass.
* Tweak tests where needed.
2019-03-26 13:22:31 +00:00

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// 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 SOURCE_SPIRV_REDUCER_OPTIONS_H_
#define SOURCE_SPIRV_REDUCER_OPTIONS_H_
#include "spirv-tools/libspirv.h"
#include <string>
#include <utility>
// The default maximum number of steps for the reducer to run before giving up.
const uint32_t kDefaultStepLimit = 250;
// Manages command line options passed to the SPIR-V Reducer. New struct
// members may be added for any new option.
struct spv_reducer_options_t {
spv_reducer_options_t()
: step_limit(kDefaultStepLimit), fail_on_validation_error(false) {}
// See spvReducerOptionsSetStepLimit.
uint32_t step_limit;
// See spvReducerOptionsSetFailOnValidationError.
bool fail_on_validation_error;
};
#endif // SOURCE_SPIRV_REDUCER_OPTIONS_H_