Kostya Serebryany ae0620c4e9 [sanitizer/coverage] Add AFL-style coverage counters (search heuristic for fuzzing). ... Introduce -mllvm -sanitizer-coverage-8bit-counters=1 which adds imprecise thread-unfriendly 8-bit coverage counters. The run-time library maps these 8-bit counters to 8-bit bitsets in the same way AFL (http://lcamtuf.coredump.cx/afl/technical_details.txt) does: counter values are divided into 8 ranges and based on the counter value one of the bits in the bitset is set. The AFL ranges are used here: 1, 2, 3, 4-7, 8-15, 16-31, 32-127, 128+. These counters provide a search heuristic for single-threaded coverage-guided fuzzers, we do not expect them to be useful for other purposes. Depending on the value of -fsanitize-coverage=[123] flag, these counters will be added to the function entry blocks (=1), every basic block (=2), or every edge (=3). Use these counters as an optional search heuristic in the Fuzzer library. Add a test where this heuristic is critical. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231166 91177308-0d34-0410-b5e6-96231b3b80d8		2015-03-03 23:27:02 +00:00
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AddLLVM.cmake	Making the SO version major.minor instead of just major because ABI and API change between minor versions.	2015-03-02 17:50:13 +00:00
AddLLVMDefinitions.cmake
AddOCaml.cmake
AddSphinxTarget.cmake
CheckAtomic.cmake	cmake: Use MSVC atomics with clang-cl	2015-03-02 22:00:23 +00:00
ChooseMSVCCRT.cmake
CMakeLists.txt
CrossCompile.cmake
FindOCaml.cmake
FindSphinx.cmake
GetHostTriple.cmake
GetSVN.cmake
HandleLLVMOptions.cmake	[sanitizer/coverage] Add AFL-style coverage counters (search heuristic for fuzzing).	2015-03-03 23:27:02 +00:00
HandleLLVMStdlib.cmake
LLVM-Config.cmake	Revert "Raising minimum required CMake version to 2.8.12.2."	2015-02-24 16:39:46 +00:00
LLVMConfig.cmake.in
LLVMConfigVersion.cmake.in
LLVMParseArguments.cmake
LLVMProcessSources.cmake	Teach llvm_add_library() to find include dirs.	2015-02-10 05:04:37 +00:00
Makefile
TableGen.cmake
VersionFromVCS.cmake