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https://github.com/KhronosGroup/SPIRV-Tools
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69 lines
2.7 KiB
C++
69 lines
2.7 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_TRANSFORMATION_REPLACE_IRRELEVANT_ID_H_
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#define SOURCE_FUZZ_TRANSFORMATION_REPLACE_IRRELEVANT_ID_H_
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#include "source/fuzz/transformation.h"
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namespace spvtools {
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namespace fuzz {
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class TransformationReplaceIrrelevantId : public Transformation {
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public:
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explicit TransformationReplaceIrrelevantId(
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const protobufs::TransformationReplaceIrrelevantId& message);
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TransformationReplaceIrrelevantId(
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const protobufs::IdUseDescriptor& id_use_descriptor,
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uint32_t replacement_id);
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// - The id of interest in |message_.id_use_descriptor| is irrelevant
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// according to the fact manager.
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// - The types of the original id and of the replacement ids are the same.
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// - The replacement must not be the result id of an OpFunction instruction.
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// - |message_.replacement_id| is available to use at the enclosing
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// instruction of |message_.id_use_descriptor|.
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// - The original id is in principle replaceable with any other id of the same
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// type. See fuzzerutil::IdUseCanBeReplaced for details.
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bool IsApplicable(
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opt::IRContext* ir_context,
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const TransformationContext& transformation_context) const override;
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// Replaces the use of an irrelevant id identified by
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// |message_.id_use_descriptor| with the id |message_.replacement_id|, which
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// has the same type as the id of interest.
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void Apply(opt::IRContext* ir_context,
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TransformationContext* transformation_context) const override;
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std::unordered_set<uint32_t> GetFreshIds() const override;
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protobufs::Transformation ToMessage() const override;
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// Returns true if and only if |use_instruction| is OpVariable and
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// |replacement_for_use| is not a constant instruction - i.e., if it would be
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// illegal to replace the variable's initializer with the given instruction.
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static bool AttemptsToReplaceVariableInitializerWithNonConstant(
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const opt::Instruction& use_instruction,
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const opt::Instruction& replacement_for_use);
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private:
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protobufs::TransformationReplaceIrrelevantId message_;
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};
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} // namespace fuzz
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} // namespace spvtools
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#endif // SOURCE_FUZZ_TRANSFORMATION_REPLACE_IRRELEVANT_ID_H_
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