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https://github.com/KhronosGroup/SPIRV-Tools
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9e26ae0455
This change adds the notion of "overflow ids", which can be used during shrinking to facilitate applying transformations that would otherwise have become inapplicable due to earlier transformations being removed.
46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
// Copyright (c) 2020 Google LLC
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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_FUZZ_COUNTER_OVERFLOW_ID_SOURCE_H_
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#define SOURCE_FUZZ_COUNTER_OVERFLOW_ID_SOURCE_H_
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#include "source/fuzz/overflow_id_source.h"
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namespace spvtools {
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namespace fuzz {
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// A source of overflow ids that uses a counter to provide successive ids from
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// a given starting value.
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class CounterOverflowIdSource : public OverflowIdSource {
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public:
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// |first_available_id| is the starting value for the counter.
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explicit CounterOverflowIdSource(uint32_t first_available_id);
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// Always returns true.
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bool HasOverflowIds() const override;
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// Returns the current counter value and increments the counter.
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// TODO(https://github.com/KhronosGroup/SPIRV-Tools/issues/2541) We should
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// account for the case where the maximum allowed id is reached.
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uint32_t GetNextOverflowId() override;
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private:
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uint32_t next_available_id_;
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};
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} // namespace fuzz
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} // namespace spvtools
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#endif // SOURCE_FUZZ_OVERFLOW_ID_SOURCE_COUNTER_H_
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