4766a86cf2
Also added diffing of a few more math functions. Combining the diff check for all of these functions helps us meet the OSS fuzz bar of a minimum of 100 program edges. Reviewed By: lntue Differential Revision: https://reviews.llvm.org/D91817
62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
//===-- Template to diff single-input-single-output functions ---*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_FUZZING_MATH_SINGLE_INPUT_SINGLE_OUTPUT_DIFF_H
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#define LLVM_LIBC_FUZZING_MATH_SINGLE_INPUT_SINGLE_OUTPUT_DIFF_H
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#include "fuzzing/math/Compare.h"
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#include "utils/FPUtil/FPBits.h"
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#include <math.h>
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#include <stddef.h>
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#include <stdint.h>
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template <typename T> using SingleInputSingleOutputFunc = T (*)(T);
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template <typename T>
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void SingleInputSingleOutputDiff(SingleInputSingleOutputFunc<T> func1,
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SingleInputSingleOutputFunc<T> func2,
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const uint8_t *data, size_t size) {
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if (size < sizeof(T))
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return;
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T x = *reinterpret_cast<const T *>(data);
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T result1 = func1(x);
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T result2 = func2(x);
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if (!ValuesEqual(result1, result2))
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__builtin_trap();
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}
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template <typename T1, typename T2>
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using SingleInputSingleOutputWithSideEffectFunc = T1 (*)(T1, T2 *);
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template <typename T1, typename T2>
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void SingleInputSingleOutputWithSideEffectDiff(
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SingleInputSingleOutputWithSideEffectFunc<T1, T2> func1,
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SingleInputSingleOutputWithSideEffectFunc<T1, T2> func2,
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const uint8_t *data, size_t size) {
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if (size < sizeof(T1))
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return;
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T1 x = *reinterpret_cast<const T1 *>(data);
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T2 sideEffect1, sideEffect2;
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T1 result1 = func1(x, &sideEffect1);
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T1 result2 = func2(x, &sideEffect2);
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if (!ValuesEqual(result1, result2))
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__builtin_trap();
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if (!ValuesEqual(sideEffect1, sideEffect2))
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__builtin_trap();
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}
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#endif // LLVM_LIBC_FUZZING_MATH_SINGLE_INPUT_SINGLE_OUTPUT_DIFF_H
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