diff options
| -rw-r--r-- | rts/sm/Storage.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/rts/sm/Storage.c b/rts/sm/Storage.c index f889e2262b..2e03b77695 100644 --- a/rts/sm/Storage.c +++ b/rts/sm/Storage.c @@ -1363,13 +1363,18 @@ StgWord calcTotalCompactW (void) #include <libkern/OSCacheControl.h> #endif +/* __builtin___clear_cache is supported since GNU C 4.3.6. + * We pick 4.4 to simplify condition a bit. + */ +#define GCC_HAS_BUILTIN_CLEAR_CACHE (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) + #if defined(__clang__) /* clang defines __clear_cache as a builtin on some platforms. * For example on armv7-linux-androideabi. The type slightly * differs from gcc. */ extern void __clear_cache(void * begin, void * end); -#elif defined(__GNUC__) +#elif defined(__GNUC__) && !GCC_HAS_BUILTIN_CLEAR_CACHE /* __clear_cache is a libgcc function. * It existed before __builtin___clear_cache was introduced. * See #8562. @@ -1397,15 +1402,12 @@ void flushExec (W_ len, AdjustorExecutable exec_addr) __clear_cache((void*)begin, (void*)end); # endif #elif defined(__GNUC__) - /* For all other platforms, fall back to a libgcc builtin. */ unsigned char* begin = (unsigned char*)exec_addr; unsigned char* end = begin + len; - /* __builtin___clear_cache is supported since GNU C 4.3.6. - * We pick 4.4 to simplify condition a bit. - */ -# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) +# if GCC_HAS_BUILTIN_CLEAR_CACHE __builtin___clear_cache((void*)begin, (void*)end); # else + /* For all other platforms, fall back to a libgcc builtin. */ __clear_cache((void*)begin, (void*)end); # endif #else |