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Some transformations (e.g. TransformationAddFunction) rely on running the validator to decide whether the transformation is applicable. A recent change allowed spirv-fuzz to take validator options, to cater for the case where a module should be considered valid under particular conditions. However, validation during the checking of transformations had no access to these validator options. This change introduced TransformationContext, which currently consists of a fact manager and a set of validator options, but could in the future have other fields corresponding to other objects that it is useful to have access to when applying transformations. Now, instead of checking and applying transformations in the context of a FactManager, a TransformationContext is used. This gives access to the fact manager as before, and also access to the validator options when they are needed.
59 lines
2.2 KiB
C++
59 lines
2.2 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_FUNCTION_CALLS_H_
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#define SOURCE_FUZZ_FUZZER_PASS_ADD_FUNCTION_CALLS_H_
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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 adds calls at random to (a) livesafe functions, from
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// anywhere, and (b) any functions, from dead blocks.
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class FuzzerPassAddFunctionCalls : public FuzzerPass {
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public:
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FuzzerPassAddFunctionCalls(
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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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~FuzzerPassAddFunctionCalls();
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void Apply() override;
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private:
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// Identify all instructions available at |instr_it|, in block |block| of
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// |function|, that are potentially suitable as function call actual
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// parameters. The results are grouped by type.
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std::map<uint32_t, std::vector<opt::Instruction*>>
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GetAvailableInstructionsSuitableForActualParameters(
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opt::Function* function, opt::BasicBlock* block,
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const opt::BasicBlock::iterator& inst_it);
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// Randomly chooses suitable arguments to invoke |callee| right before
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// instruction |caller_inst_it| of block |caller_block| in |caller_function|,
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// based on both existing available instructions and the addition of new
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// instructions to the module.
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std::vector<uint32_t> ChooseFunctionCallArguments(
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const opt::Function& callee, opt::Function* caller_function,
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opt::BasicBlock* caller_block,
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const opt::BasicBlock::iterator& caller_inst_it);
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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_FUNCTION_CALLS_H_
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