mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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87 lines
3.4 KiB
C++
87 lines
3.4 KiB
C++
// Copyright (c) 2020 Vasyl Teliman
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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_ADD_SYNONYM_H_
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#define SOURCE_FUZZ_TRANSFORMATION_ADD_SYNONYM_H_
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#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
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#include "source/fuzz/transformation.h"
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#include "source/fuzz/transformation_context.h"
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#include "source/opt/ir_context.h"
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namespace spvtools {
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namespace fuzz {
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class TransformationAddSynonym : public Transformation {
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public:
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explicit TransformationAddSynonym(
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protobufs::TransformationAddSynonym message);
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TransformationAddSynonym(
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uint32_t result_id,
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protobufs::TransformationAddSynonym::SynonymType synonym_type,
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uint32_t synonym_fresh_id,
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const protobufs::InstructionDescriptor& insert_before);
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// - |result_id| must be a valid result id of some instruction in the module.
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// - |synonym_type| is a type of the synonymous instruction that will be
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// created.
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// - |synonym_fresh_id| is a fresh id.
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// - |insert_before| must be a valid instruction descriptor and we must be
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// able to insert a new synonymous instruction before |insert_before|.
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// - |result_id| must be available before |insert_before|.
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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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// Creates a new synonymous instruction according to the |synonym_type| with
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// result id |synonym_fresh_id|.
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// Inserts that instruction before |insert_before| and creates a fact
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// that the |synonym_fresh_id| and the |result_id| are synonymous.
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void Apply(opt::IRContext* ir_context,
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TransformationContext* transformation_context) const override;
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protobufs::Transformation ToMessage() const override;
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// Returns true if we can create a synonym of |inst| according to the
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// |synonym_type|.
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static bool IsInstructionValid(
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opt::IRContext* ir_context, opt::Instruction* inst,
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protobufs::TransformationAddSynonym::SynonymType synonym_type);
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// Returns true if |synonym_type| requires an additional constant instruction
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// to be present in the module.
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static bool IsAdditionalConstantRequired(
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protobufs::TransformationAddSynonym::SynonymType synonym_type);
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private:
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// Returns a new instruction which is synonymous to |message_.result_id|.
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std::unique_ptr<opt::Instruction> MakeSynonymousInstruction(
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opt::IRContext* ir_context) const;
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// Returns a result id of a constant instruction that is required to be
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// present in some synonym types (e.g. returns a result id of a zero constant
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// for ADD_ZERO synonym type). Returns 0 if no such instruction is present in
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// the module. This method should only be called when
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// IsAdditionalConstantRequired returns true.
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uint32_t MaybeGetConstantId(opt::IRContext* ir_context) const;
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protobufs::TransformationAddSynonym 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_ADD_SYNONYM_H_
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