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// Copyright (c) 2020 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_FUZZER_PASS_ADD_EQUATION_INSTRUCTIONS_H_
#define SOURCE_FUZZ_FUZZER_PASS_ADD_EQUATION_INSTRUCTIONS_H_
#include <vector>
#include "source/fuzz/fuzzer_pass.h"
namespace spvtools {
namespace fuzz {
// Fuzzer pass that sprinkles instructions through the module that define
// equations using various arithmetic and logical operators.
class FuzzerPassAddEquationInstructions : public FuzzerPass {
public:
FuzzerPassAddEquationInstructions(
opt::IRContext* ir_context, TransformationContext* transformation_context,
FuzzerContext* fuzzer_context,
protobufs::TransformationSequence* transformations,
bool ignore_inapplicable_transformations);
void Apply() override;
private:
// Yields those instructions in |instructions| that have integer scalar or
// vector result type.
std::vector<opt::Instruction*> GetIntegerInstructions(
const std::vector<opt::Instruction*>& instructions) const;
// Returns only instructions, that have either a scalar floating-point or a
// vector type.
std::vector<opt::Instruction*> GetFloatInstructions(
const std::vector<opt::Instruction*>& instructions) const;
// Yields those instructions in |instructions| that have boolean scalar or
// vector result type.
std::vector<opt::Instruction*> GetBooleanInstructions(
const std::vector<opt::Instruction*>& instructions) const;
// Yields those instructions in |instructions| that have a scalar numerical or
// a vector of numerical components type. Only 16, 32 and 64-bit numericals
// are supported if both OpTypeInt and OpTypeFloat instructions can be created
// with the specified width (e.g. for 16-bit types both Float16 and Int16
// capabilities must be present).
std::vector<opt::Instruction*> GetNumericalInstructions(
const std::vector<opt::Instruction*>& instructions) const;
// Requires that |instructions| are scalars or vectors of some type. Returns
// only those instructions whose width is |width|. If |width| is 1 this means
// the scalars.
std::vector<opt::Instruction*> RestrictToVectorWidth(
const std::vector<opt::Instruction*>& instructions,
uint32_t vector_width) const;
// Requires that |instructions| are integer or float scalars or vectors.
// Returns only those instructions for which the bit-width of the underlying
// integer or floating-point type is |bit_width|.
std::vector<opt::Instruction*> RestrictToElementBitWidth(
const std::vector<opt::Instruction*>& instructions,
uint32_t bit_width) const;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_FUZZER_PASS_ADD_EQUATION_INSTRUCTIONS_H_
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