diff options
| author | Henrik Gramner <gramner@twoorioles.com> | 2021-06-20 19:42:21 +0300 |
|---|---|---|
| committer | Henrik Gramner <henrik@gramner.com> | 2021-06-20 20:02:56 +0300 |
| commit | a336f470edde80bb2252b99b2d1cbd7cd40f17d0 (patch) | |
| tree | 738ffe9e8d9f319d490fcbcf41d2f55c16b41d0f /include | |
| parent | f951165ea6530c1bb589064709fe7ae7b7e9eb72 (diff) | |
Use the 'noclone` function attribute in addition to 'noinline`
We use the 'noinline' attribute in order to reduce code size, but that
doesn't prevent gcc from cloning the function, which is something that
goes against the purpose of preventing inlining in the first place.
Adding the 'noclone' attribute reduces the (stripped) binary size by
around 45 kB on x86-64.
Diffstat (limited to 'include')
| -rw-r--r-- | include/common/attributes.h | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/include/common/attributes.h b/include/common/attributes.h index 15892b9..64df445 100644 --- a/include/common/attributes.h +++ b/include/common/attributes.h @@ -33,6 +33,14 @@ #include <stddef.h> #include <assert.h> +#ifndef __has_attribute +#define __has_attribute(x) 0 +#endif + +#ifndef __has_feature +#define __has_feature(x) 0 +#endif + #ifdef __GNUC__ #define ATTR_ALIAS __attribute__((may_alias)) #define ATTR_FORMAT_PRINTF(fmt, attr) __attribute__((__format__(__printf__, fmt, attr))) @@ -93,9 +101,11 @@ */ #ifdef _MSC_VER #define NOINLINE __declspec(noinline) -#else /* !_MSC_VER */ +#elif __has_attribute(noclone) +#define NOINLINE __attribute__((noinline, noclone)) +#else #define NOINLINE __attribute__((noinline)) -#endif /* !_MSC_VER */ +#endif #ifdef __clang__ #define NO_SANITIZE(x) __attribute__((no_sanitize(x))) @@ -160,10 +170,6 @@ static inline int clzll(const unsigned long long mask) { } #endif /* !_MSC_VER */ -#ifndef __has_feature -#define __has_feature(x) 0 -#endif - #ifndef static_assert #define CHECK_OFFSET(type, field, name) \ struct check_##type##_##field { int x[(name == offsetof(type, field)) ? 1 : -1]; } |