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https://github.com/KhronosGroup/SPIRV-Tools
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be099cde1f
Fixes FuzzerPassAddEquationInstructions to check whether certain int/float type widths are supported to avoid creating unsupported types. Fixes #3669.
81 lines
3.2 KiB
C++
81 lines
3.2 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_FUZZER_PASS_ADD_EQUATION_INSTRUCTIONS_H_
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#define SOURCE_FUZZ_FUZZER_PASS_ADD_EQUATION_INSTRUCTIONS_H_
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#include <vector>
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#include "source/fuzz/fuzzer_pass.h"
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namespace spvtools {
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namespace fuzz {
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// Fuzzer pass that sprinkles instructions through the module that define
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// equations using various arithmetic and logical operators.
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class FuzzerPassAddEquationInstructions : public FuzzerPass {
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public:
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FuzzerPassAddEquationInstructions(
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opt::IRContext* ir_context, TransformationContext* transformation_context,
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FuzzerContext* fuzzer_context,
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protobufs::TransformationSequence* transformations);
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~FuzzerPassAddEquationInstructions();
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void Apply() override;
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private:
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// Yields those instructions in |instructions| that have integer scalar or
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// vector result type.
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std::vector<opt::Instruction*> GetIntegerInstructions(
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const std::vector<opt::Instruction*>& instructions) const;
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// Returns only instructions, that have either a scalar floating-point or a
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// vector type.
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std::vector<opt::Instruction*> GetFloatInstructions(
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const std::vector<opt::Instruction*>& instructions) const;
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// Yields those instructions in |instructions| that have boolean scalar or
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// vector result type.
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std::vector<opt::Instruction*> GetBooleanInstructions(
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const std::vector<opt::Instruction*>& instructions) const;
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// Yields those instructions in |instructions| that have a scalar numerical or
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// a vector of numerical components type. Only 16, 32 and 64-bit numericals
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// are supported if both OpTypeInt and OpTypeFloat instructions can be created
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// with the specified width (e.g. for 16-bit types both Float16 and Int16
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// capabilities must be present).
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std::vector<opt::Instruction*> GetNumericalInstructions(
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const std::vector<opt::Instruction*>& instructions) const;
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// Requires that |instructions| are scalars or vectors of some type. Returns
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// only those instructions whose width is |width|. If |width| is 1 this means
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// the scalars.
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std::vector<opt::Instruction*> RestrictToVectorWidth(
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const std::vector<opt::Instruction*>& instructions,
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uint32_t vector_width) const;
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// Requires that |instructions| are integer or float scalars or vectors.
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// Returns only those instructions for which the bit-width of the underlying
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// integer or floating-point type is |bit_width|.
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std::vector<opt::Instruction*> RestrictToElementBitWidth(
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const std::vector<opt::Instruction*>& instructions,
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uint32_t bit_width) const;
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};
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} // namespace fuzz
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} // namespace spvtools
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#endif // SOURCE_FUZZ_FUZZER_PASS_ADD_EQUATION_INSTRUCTIONS_H_
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