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| author | Kuan-Wei Chiu <visitorckw@gmail.com> | 2024-06-24 05:51:55 +0800 |
|---|---|---|
| committer | Kuan-Wei Chiu <visitorckw@gmail.com> | 2024-06-24 06:52:07 +0800 |
| commit | ac5815d994fe8ff151e0f13088891acc506662ed (patch) | |
| tree | 2534f0f9524dbe69254441d693e41816bf850aab /include/afl-fuzz.h | |
| parent | 540d741df0541e0e41e600672245ca1e867c5ef4 (diff) | |
| download | afl++-ac5815d994fe8ff151e0f13088891acc506662ed.tar.gz | |
Optimize bit counting using __builtin_popcount
Use the __builtin_popcount intrinsic to optimize the bit counting function if the compiler supports it. This change replaces the manual bit counting algorithm with the more efficient built-in function, which leverages hardware support on compatible processors. This modification ensures that the code remains backward-compatible by falling back to the original implementation when __builtin_popcount is not available.
Diffstat (limited to 'include/afl-fuzz.h')
| -rw-r--r-- | include/afl-fuzz.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/afl-fuzz.h b/include/afl-fuzz.h index 6d03a74c..45600698 100644 --- a/include/afl-fuzz.h +++ b/include/afl-fuzz.h @@ -116,6 +116,10 @@ #include <TargetConditionals.h> #endif +#ifndef __has_builtin + #define __has_builtin(x) 0 +#endif + #undef LIST_FOREACH /* clashes with FreeBSD */ #include "list.h" #ifndef SIMPLE_FILES |