SPIRV-Tools/source/fuzz/transformation_add_constant_scalar.h
Alastair Donaldson fcb22ecf0f
spirv-fuzz: Report fresh ids in transformations (#3856)
Adds a virtual method, GetFreshIds(), to Transformation. Every
transformation uses this to indicate which ids in its protobuf message
are fresh ids. This means that when replaying a sequence of
transformations the replayer can obtain a smallest id that is not in
use by the module already and that will not be used by any
transformation by necessity. Ids greater than or equal to this id
can be used as overflow ids.

Fixes #3851.
2020-09-29 22:12:49 +01:00

62 lines
2.2 KiB
C++

// Copyright (c) 2019 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_FUZZ_TRANSFORMATION_ADD_CONSTANT_SCALAR_H_
#define SOURCE_FUZZ_TRANSFORMATION_ADD_CONSTANT_SCALAR_H_
#include <vector>
#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
#include "source/fuzz/transformation.h"
#include "source/fuzz/transformation_context.h"
#include "source/opt/ir_context.h"
namespace spvtools {
namespace fuzz {
class TransformationAddConstantScalar : public Transformation {
public:
explicit TransformationAddConstantScalar(
const protobufs::TransformationAddConstantScalar& message);
TransformationAddConstantScalar(uint32_t fresh_id, uint32_t type_id,
const std::vector<uint32_t>& words,
bool is_irrelevant);
// - |message_.fresh_id| must not be used by the module
// - |message_.type_id| must be the id of a floating-point or integer type
// - The size of |message_.word| must be compatible with the width of this
// type
bool IsApplicable(
opt::IRContext* ir_context,
const TransformationContext& transformation_context) const override;
// Adds a new OpConstant instruction with the given type and words.
// Creates an IdIsIrrelevant fact about |fresh_id| if |is_irrelevant| is true.
void Apply(opt::IRContext* ir_context,
TransformationContext* transformation_context) const override;
std::unordered_set<uint32_t> GetFreshIds() const override;
protobufs::Transformation ToMessage() const override;
private:
protobufs::TransformationAddConstantScalar message_;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_TRANSFORMATION_ADD_CONSTANT_SCALAR_H_