Index: clang/tools/clang-fuzzer/handle-llvm/handle_llvm.h =================================================================== --- clang/tools/clang-fuzzer/handle-llvm/handle_llvm.h +++ clang/tools/clang-fuzzer/handle-llvm/handle_llvm.h @@ -19,7 +19,7 @@ namespace clang_fuzzer { void HandleLLVM(const std::string &S, - const std::vector &ExtraArgs); + const std::vector &ExtraArgs); } // namespace clang_fuzzer #endif Index: clang/tools/clang-fuzzer/handle-llvm/handle_llvm.cpp =================================================================== --- clang/tools/clang-fuzzer/handle-llvm/handle_llvm.cpp +++ clang/tools/clang-fuzzer/handle-llvm/handle_llvm.cpp @@ -15,6 +15,7 @@ //===----------------------------------------------------------------------===// #include "handle_llvm.h" +#include "input_arrays.h" #include "llvm/ADT/Triple.h" #include "llvm/Analysis/TargetLibraryInfo.h" @@ -48,6 +49,9 @@ using namespace llvm; +// Define a type for the functions that are compiled and executed +typedef void (*LLVMFunc)(int*, int*, int*, int); + // Helper function to parse command line args and find the optimization level static void getOptLevel(const std::vector &ExtraArgs, CodeGenOpt::Level &OLvl) { @@ -68,7 +72,7 @@ } } -void ErrorAndExit(std::string message) { +static void ErrorAndExit(std::string message) { errs()<< "ERROR: " << message << "\n"; std::exit(1); } @@ -88,7 +92,7 @@ } // Mimics the opt tool to run an optimization pass over the provided IR -std::string OptLLVM(const std::string &IR, CodeGenOpt::Level OLvl) { +static std::string OptLLVM(const std::string &IR, CodeGenOpt::Level OLvl) { // Create a module that will run the optimization passes SMDiagnostic Err; LLVMContext Context; @@ -117,11 +121,19 @@ return OS.str(); } -void CreateAndRunJITFun(const std::string &IR, CodeGenOpt::Level OLvl) { +// Takes a function and runs it on a set of inputs +// First determines whether f is the optimized or unoptimized function +static void RunFuncOnInputs(LLVMFunc f, int Arr[kNumArrays][kArraySize]) { + for (int i = 0; i < kNumArrays / 3; i++) + f(Arr[i], Arr[i + (kNumArrays / 3)], Arr[i + (2 * kNumArrays / 3)], + kArraySize); +} + +// Takes a string of IR and compiles it using LLVM's JIT Engine +static void CreateAndRunJITFunc(const std::string &IR, CodeGenOpt::Level OLvl) { SMDiagnostic Err; LLVMContext Context; - std::unique_ptr M = parseIR(MemoryBufferRef(IR, "IR"), Err, - Context); + std::unique_ptr M = parseIR(MemoryBufferRef(IR, "IR"), Err, Context); if (!M) ErrorAndExit("Could not parse IR"); @@ -161,17 +173,14 @@ #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wpedantic" #endif - func f = reinterpret_cast(EE->getPointerToFunction(EntryFunc)); + LLVMFunc f = reinterpret_cast(EE->getPointerToFunction(EntryFunc)); #if defined(__GNUC__) && !defined(__clang) && \ ((__GNUC__ == 4) && (__GNUC_MINOR__ < 9)) #pragma GCC diagnostic pop #endif - // Define some dummy arrays to use an input for now - int a[] = {1}; - int b[] = {1}; - int c[] = {1}; - f(a, b, c, 1); + // Figure out if we are running the optimized func or the unoptimized func + RunFuncOnInputs(f, (OLvl == CodeGenOpt::None) ? UnoptArrays : OptArrays); EE->runStaticConstructorsDestructors(true); } @@ -180,6 +189,10 @@ // Mimics the lli tool to JIT the LLVM IR code and execute it void clang_fuzzer::HandleLLVM(const std::string &IR, const std::vector &ExtraArgs) { + // Populate OptArrays and UnoptArrays with the arrays from InputArrays + memcpy(OptArrays, InputArrays, kTotalSize); + memcpy(UnoptArrays, InputArrays, kTotalSize); + // Parse ExtraArgs to set the optimization level CodeGenOpt::Level OLvl; getOptLevel(ExtraArgs, OLvl); @@ -187,8 +200,11 @@ // First we optimize the IR by running a loop vectorizer pass std::string OptIR = OptLLVM(IR, OLvl); - CreateAndRunJITFun(OptIR, OLvl); - CreateAndRunJITFun(IR, CodeGenOpt::None); - + CreateAndRunJITFunc(OptIR, OLvl); + CreateAndRunJITFunc(IR, CodeGenOpt::None); + + if (memcmp(OptArrays, UnoptArrays, kTotalSize)) + ErrorAndExit("!!!BUG!!!"); + return; } Index: clang/tools/clang-fuzzer/handle-llvm/input_arrays.h =================================================================== --- /dev/null +++ clang/tools/clang-fuzzer/handle-llvm/input_arrays.h @@ -0,0 +1,118 @@ +//==-- input_arrays.h - Helper function for LLVM fuzzer inputs -------------==// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Define a few static variables used by the LLVM Proto Fuzzer +// +//===----------------------------------------------------------------------===// + +#include + +static const int kArraySize = 64; +static const int kNumArrays = 93; +static const int kTotalSize = sizeof(int) * kArraySize * kNumArrays; + +// Define two arrays that will hold the input and output for the two functions +static int OptArrays[kNumArrays][kArraySize]; +static int UnoptArrays[kNumArrays][kArraySize]; + +// Define a corpus of possible inputs +static int InputArrays[kNumArrays][kArraySize] = +{ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, + {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, + {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, + {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, + {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, + {INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX}, + {INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN, INT_MIN}, + {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, + {16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16}, + {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, + {1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024}, + {65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 0, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535}, + {-1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023, -1023}, + {INT_MAX, INT_MAX, INT_MAX, INT_MIN, INT_MAX, INT_MAX, INT_MIN, INT_MAX, INT_MAX, INT_MAX, INT_MIN, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MIN, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MIN, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MIN, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MIN, INT_MIN, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MIN, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MIN, INT_MAX, INT_MAX, INT_MAX, INT_MAX, INT_MIN, INT_MAX, INT_MAX, INT_MAX}, + {0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, }, + {1, 1, 0, 3, 2, 5, 6, 2, 6, 3, 0, 19, 18, 17, 16, 0, 13, 11, 9, 7, 5, 3, 1, -3000, -3000, -3000, -3000, -3000, -3000, -3000, 0, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000}, + {1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824, 1073741824}, + {1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0}, + {0, -1, -2, -4, -8, -16, -32, -64, -128, -256, -512, -1024, -2048, -4096, -8192, -16384, 0, -1, -2, -4, -8, -16, -32, -64, -128, -256, -512, -1024, -2048, -4096, -8192, -16384, 0, -1, -2, -4, -8, -16, -32, -64, -128, -256, -512, -1024, -2048, -4096, -8192, -16384, 0, -1, -2, -4, -8, -16, -32, -64, -128, -256, -512, -1024, -2048, -4096, -8192, -16384, }, + {-0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0}, + {1, 1, 2, 1, 6, 9, 10, 7, 2, 10, 4, 11, 10, 11, 0, 19, 26, 18, 10, 2, 14, 7, 0, 39, 34, 29, 50, 46, 42, 38, 34, 30, 26, 22, 18, 14, 10, 6, 2, 37, 34, 31, 28, 25, 22, 19, 16, 13, 10, 7, 4, 1, 102, 101, 100, 99, 98, 97, 96, 95, 94, 93, 92, 91}, + {0, 0, 2, 0, 0, 1, 6, 9, 4, 12, 6, 13, 12, 0, 2, 21, 28, 20, 12, 4, 16, 9, 2, 41, 36, 31, 26, 48, 44, 40, 36, 32, 28, 24, 20, 16, 12, 8, 4, 0, 36, 33, 30, 27, 24, 21, 18, 15, 12, 9, 6, 3, 0, 103, 102, 101, 100, 99, 98, 97, 96, 95, 94, 93}, + {1, 1, 0, 2, 2, 3, 8, 11, 6, 14, 8, 15, 14, 2, 4, 23, 30, 22, 14, 6, 18, 11, 4, 43, 38, 33, 28, 50, 46, 42, 38, 34, 30, 26, 22, 18, 14, 10, 6, 2, 38, 35, 32, 29, 26, 23, 20, 17, 14, 11, 8, 5, 2, 105, 104, 103, 102, 101, 100, 99, 98, 97, 96, 95}, + {0, 0, 0, 4, 0, 0, 10, 13, 0, 16, 0, 17, 16, 4, 6, 25, 16, 24, 16, 8, 0, 13, 6, 45, 40, 35, 30, 52, 48, 44, 40, 36, 32, 28, 24, 20, 16, 12, 8, 4, 0, 37, 34, 31, 28, 25, 22, 19, 16, 13, 10, 7, 4, 1, 106, 105, 104, 103, 102, 101, 100, 99, 98, 97}, + {1, 1, 2, 3, 2, 2, 0, 1, 2, 9, 2, 19, 18, 6, 8, 27, 18, 26, 18, 10, 2, 15, 8, 1, 42, 37, 32, 27, 50, 46, 42, 38, 34, 30, 26, 22, 18, 14, 10, 6, 2, 39, 36, 33, 30, 27, 24, 21, 18, 15, 12, 9, 6, 3, 0, 107, 106, 105, 104, 103, 102, 101, 100, 99}, + {0, 0, 2, 5, 4, 4, 2, 3, 4, 11, 4, 21, 20, 8, 10, 29, 20, 28, 20, 12, 4, 17, 10, 3, 44, 39, 34, 29, 52, 48, 44, 40, 36, 32, 28, 24, 20, 16, 12, 8, 4, 0, 38, 35, 32, 29, 26, 23, 20, 17, 14, 11, 8, 5, 2, 109, 108, 107, 106, 105, 104, 103, 102, 101}, + {1, 1, 0, 1, 6, 6, 4, 5, 6, 13, 6, 1, 22, 10, 12, 1, 22, 30, 22, 14, 6, 19, 12, 5, 46, 41, 36, 31, 54, 50, 46, 42, 38, 34, 30, 26, 22, 18, 14, 10, 6, 2, 40, 37, 34, 31, 28, 25, 22, 19, 16, 13, 10, 7, 4, 1, 110, 109, 108, 107, 106, 105, 104, 103}, + {0, 0, 0, 0, 4, 8, 0, 0, 8, 15, 8, 3, 12, 12, 0, 3, 24, 32, 24, 16, 8, 0, 14, 7, 0, 43, 38, 33, 28, 52, 48, 44, 40, 36, 32, 28, 24, 20, 16, 12, 8, 4, 0, 39, 36, 33, 30, 27, 24, 21, 18, 15, 12, 9, 6, 3, 0, 111, 110, 109, 108, 107, 106, 105}, + {1, 1, 2, 2, 6, 5, 2, 2, 10, 17, 10, 5, 14, 14, 2, 5, 26, 17, 26, 18, 10, 2, 16, 9, 2, 45, 40, 35, 30, 54, 50, 46, 42, 38, 34, 30, 26, 22, 18, 14, 10, 6, 2, 41, 38, 35, 32, 29, 26, 23, 20, 17, 14, 11, 8, 5, 2, 113, 112, 111, 110, 109, 108, 107}, + {0, 0, 2, 4, 0, 7, 4, 4, 12, 1, 12, 7, 16, 16, 4, 7, 28, 19, 28, 20, 12, 4, 18, 11, 4, 47, 42, 37, 32, 56, 52, 48, 44, 40, 36, 32, 28, 24, 20, 16, 12, 8, 4, 0, 40, 37, 34, 31, 28, 25, 22, 19, 16, 13, 10, 7, 4, 1, 114, 113, 112, 111, 110, 109}, + {1, 1, 0, 3, 2, 9, 6, 6, 14, 3, 14, 9, 18, 18, 6, 9, 30, 21, 30, 22, 14, 6, 20, 13, 6, 49, 44, 39, 34, 29, 54, 50, 46, 42, 38, 34, 30, 26, 22, 18, 14, 10, 6, 2, 42, 39, 36, 33, 30, 27, 24, 21, 18, 15, 12, 9, 6, 3, 0, 115, 114, 113, 112, 111}, + {1, 1, 0, 3, 2, 5, 6, 2, 6, 3, 0, 19, 18, 17, 16, 0, 13, 11, 9, 7, 5, 3, 1, -3000, -3000, -3000, -3000, -3000, -3000, -3000, 0, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000, -3000}, + {1073741824, 1073741824, 1073741824, 1073741824, 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