From 3a509c61689112cc321c4c78f058014abff66c8a Mon Sep 17 00:00:00 2001 From: van Hauser Date: Fri, 10 Apr 2020 22:33:11 +0200 Subject: LTO optimization, variable map size, autodictionary (#307) * lto module clean-up * step 1/3 * step 1/3 completed * if tmp is ever made non-static * parts 2 and 3 - autodictionary is complete * variable map_size support * variable map size: changed overlooked functions * remove debug for autodict * 64 bit alignment of map size * fix review comments * force 64 bit alignment on both sides * typo --- docs/env_variables.md | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'docs/env_variables.md') diff --git a/docs/env_variables.md b/docs/env_variables.md index cd002145..7890da35 100644 --- a/docs/env_variables.md +++ b/docs/env_variables.md @@ -111,10 +111,15 @@ Then there are a few specific features that are only available in llvm_mode: instrumentation which is 100% collision free (collisions are a big issue in afl and afl-like instrumentations). This is performed by using afl-clang-lto/afl-clang-lto++ instead of afl-clang-fast, but is only - built if LLVM 9 or newer is used. + built if LLVM 11 or newer is used. - None of these options are necessary to be used and are rather for manual - use (which only ever the author of this LTO implementation will use ;-) + - AFL_LLVM_LTO_AUTODICTIONARY will generate a dictionary in the target + binary based on string compare and memory compare functions. + afl-fuzz will automatically get these transmitted when starting to + fuzz. + + None of the following options are necessary to be used and are rather for + manual use (which only ever the author of this LTO implementation will use). These are used if several seperated instrumentation are performed which are then later combined. -- cgit 1.4.1