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https://github.com/KhronosGroup/SPIRV-Tools
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b8ab80843f
Adds to spirv-fuzz the option to shrink a sequence of transformations that lead to an interesting binary to be generated, to find a smaller sub-sequence of transformations that still lead to an interesting (but hopefully simpler) binary being generated. The notion of what counts as "interesting" comes from a user-provided script, the "interestingness function", similar to the way the spirv-reduce tool works. The shrinking process will give up after a maximum number of steps, which can be configured on the command line. Tests for the combination of fuzzing and shrinking are included, using a variety of interestingness functions.
71 lines
2.7 KiB
C++
71 lines
2.7 KiB
C++
// Copyright (c) 2019 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 TEST_FUZZ_FUZZ_TEST_UTIL_H_
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#define TEST_FUZZ_FUZZ_TEST_UTIL_H_
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#include "gtest/gtest.h"
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#include "source/opt/build_module.h"
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#include "source/opt/ir_context.h"
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#include "spirv-tools/libspirv.h"
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namespace spvtools {
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namespace fuzz {
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// Returns true if and only if the given binaries are bit-wise equal.
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bool IsEqual(spv_target_env env, const std::vector<uint32_t>& expected_binary,
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const std::vector<uint32_t>& actual_binary);
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// Assembles the given text and returns true if and only if the resulting binary
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// is bit-wise equal to the given binary.
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bool IsEqual(spv_target_env env, const std::string& expected_text,
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const std::vector<uint32_t>& actual_binary);
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// Assembles the given text and turns the given IR into binary, then returns
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// true if and only if the resulting binaries are bit-wise equal.
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bool IsEqual(spv_target_env env, const std::string& expected_text,
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const opt::IRContext* actual_ir);
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// Turns the given IRs into binaries, then returns true if and only if the
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// resulting binaries are bit-wise equal.
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bool IsEqual(spv_target_env env, const opt::IRContext* ir_1,
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const opt::IRContext* ir_2);
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// Assembles the given IR context and returns true if and only if
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// the resulting binary is valid.
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bool IsValid(spv_target_env env, const opt::IRContext* ir);
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// Assembles the given IR context, then returns its disassembly as a string.
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// Useful for debugging.
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std::string ToString(spv_target_env env, const opt::IRContext* ir);
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// Assembly options for writing fuzzer tests. It simplifies matters if
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// numeric ids do not change.
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const uint32_t kFuzzAssembleOption =
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SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS;
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// Disassembly options for writing fuzzer tests.
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const uint32_t kFuzzDisassembleOption =
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SPV_BINARY_TO_TEXT_OPTION_NO_HEADER | SPV_BINARY_TO_TEXT_OPTION_INDENT;
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// A silent message consumer.
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const spvtools::MessageConsumer kSilentConsumer =
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[](spv_message_level_t, const char*, const spv_position_t&,
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const char*) -> void {};
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} // namespace fuzz
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} // namespace spvtools
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#endif // TEST_FUZZ_FUZZ_TEST_UTIL_H_
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