[sr-dev] git:master: compiler_opts: __builtin_prefetch supported from gcc 3.1

Module: sip-router Branch: master Commit: a22f9ee5231623236574d7728905940e72fdb7b9 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=a22f9ee… Author: Andrei Pelinescu-Onciul <andrei(a)iptel.org> Committer: Andrei Pelinescu-Onciul <andrei(a)iptel.org> Date: Thu Oct 1 00:56:49 2009 +0200 compiler_opts: __builtin_prefetch supported from gcc 3.1 --- compiler_opt.h | 24 ++++++++++++++++++------ 1 files changed, 18 insertions(+), 6 deletions(-) diff --git a/compiler_opt.h b/compiler_opt.h index 95301a4..7fe2c21 100644 --- a/compiler_opt.h +++ b/compiler_opt.h @@ -44,25 +44,37 @@ #ifndef __compiler_opt_h #define __compiler_opt_h +/* likely/unlikely */ #if __GNUC__ >= 3 + #define likely(expr) __builtin_expect(!!(expr), 1) #define unlikely(expr) __builtin_expect(!!(expr), 0) -#define prefetch(addr) __builtin_prefetch((addr)) -#define prefetch_w(addr) __builtin_prefetch((addr), 1) -#define prefetch_loc_r(addr, loc) __builtin_prefetch((addr), 0, (loc)) -#define prefetch_loc_w(addr, loc) __builtin_prefetch((addr), 1, (loc)) - #else /* __GNUC__ */ #warning "No compiler optimizations supported try gcc 4.x" #define likely(expr) (expr) #define unlikely(expr) (expr) +#endif /* __GNUC__ */ + + + +/* prefetch* */ +#if ( __GNUC__ > 3 ) || ( __GNUC__ == 3 && __GNUC_MINOR__ >= 1 ) + +#define prefetch(addr) __builtin_prefetch((addr)) +#define prefetch_w(addr) __builtin_prefetch((addr), 1) +#define prefetch_loc_r(addr, loc) __builtin_prefetch((addr), 0, (loc)) +#define prefetch_loc_w(addr, loc) __builtin_prefetch((addr), 1, (loc)) + +#else + #define prefetch(addr) #define prefetch_w(addr) #define prefetch_loc_r(addr, loc) #define prefetch_loc_w(addr, loc) -#endif /* __GNUC__ */ + +#endif /* __GNUC__ > 3 || ( __GNUC__ == 3 && __GNUC_MINOR__ >= 1 ) */ #endif