diff options
Diffstat (limited to 'src/mesa/main')
| -rw-r--r-- | src/mesa/main/imports.c | 12 | ||||
| -rw-r--r-- | src/mesa/main/imports.h | 35 |
2 files changed, 26 insertions, 21 deletions
diff --git a/src/mesa/main/imports.c b/src/mesa/main/imports.c index 2c2d11e35ac..b8c75481516 100644 --- a/src/mesa/main/imports.c +++ b/src/mesa/main/imports.c @@ -217,7 +217,7 @@ _mesa_align_realloc(void *oldBuffer, size_t oldSize, size_t newSize, /*@{*/ -#ifndef __GNUC__ +#ifndef HAVE___BUILTIN_FFS /** * Find the first bit set in a word. */ @@ -246,8 +246,9 @@ ffs(int i) } return bit; } +#endif - +#ifndef HAVE___BUILTIN_FFSLL /** * Find position of first bit set in given value. * XXX Warning: this function can only be used on 64-bit systems! @@ -271,11 +272,10 @@ ffsll(long long int val) return 0; } -#endif /* __GNUC__ */ +#endif -#if !defined(__GNUC__) ||\ - ((__GNUC__ * 100 + __GNUC_MINOR__) < 304) /* Not gcc 3.4 or later */ +#ifndef HAVE___BUILTIN_POPCOUNT /** * Return number of bits set in given GLuint. */ @@ -288,7 +288,9 @@ _mesa_bitcount(unsigned int n) } return bits; } +#endif +#ifndef HAVE___BUILTIN_POPCOUNTLL /** * Return number of bits set in given 64-bit uint. */ diff --git a/src/mesa/main/imports.h b/src/mesa/main/imports.h index 4cd2f3f3172..436d1651a82 100644 --- a/src/mesa/main/imports.h +++ b/src/mesa/main/imports.h @@ -377,8 +377,7 @@ _mesa_is_pow_two(int x) static inline int32_t _mesa_next_pow_two_32(uint32_t x) { -#if defined(__GNUC__) && \ - ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) /* gcc 3.4 or later */ +#ifdef HAVE___BUILTIN_CLZ uint32_t y = (x != 1); return (1 + y) << ((__builtin_clz(x - y) ^ 31) ); #else @@ -396,13 +395,10 @@ _mesa_next_pow_two_32(uint32_t x) static inline int64_t _mesa_next_pow_two_64(uint64_t x) { -#if defined(__GNUC__) && \ - ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) /* gcc 3.4 or later */ +#ifdef HAVE___BUILTIN_CLZLL uint64_t y = (x != 1); - if (sizeof(x) == sizeof(long)) - return (1 + y) << ((__builtin_clzl(x - y) ^ 63)); - else - return (1 + y) << ((__builtin_clzll(x - y) ^ 63)); + STATIC_ASSERT(sizeof(x) == sizeof(long long)); + return (1 + y) << ((__builtin_clzll(x - y) ^ 63)); #else x--; x |= x >> 1; @@ -423,8 +419,7 @@ _mesa_next_pow_two_64(uint64_t x) static inline GLuint _mesa_logbase2(GLuint n) { -#if defined(__GNUC__) && \ - ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) /* gcc 3.4 or later */ +#ifdef HAVE___BUILTIN_CLZ return (31 - __builtin_clz(n | 1)); #else GLuint pos = 0; @@ -476,22 +471,30 @@ _mesa_exec_free( void *addr ); #ifndef FFS_DEFINED #define FFS_DEFINED 1 -#ifdef __GNUC__ +#ifdef HAVE___BUILTIN_FFS #define ffs __builtin_ffs -#define ffsll __builtin_ffsll #else extern int ffs(int i); +#endif + +#ifdef HAVE___BUILTIN_FFSLL +#define ffsll __builtin_ffsll +#else extern int ffsll(long long int i); -#endif /*__ GNUC__ */ +#endif #endif /* FFS_DEFINED */ -#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) /* gcc 3.4 or later */ +#ifdef HAVE___BUILTIN_POPCOUNT #define _mesa_bitcount(i) __builtin_popcount(i) -#define _mesa_bitcount_64(i) __builtin_popcountll(i) #else extern unsigned int _mesa_bitcount(unsigned int n); +#endif + +#ifdef HAVE___BUILTIN_POPCOUNTLL +#define _mesa_bitcount_64(i) __builtin_popcountll(i) +#else extern unsigned int _mesa_bitcount_64(uint64_t n); #endif @@ -504,7 +507,7 @@ _mesa_bitcount_64(uint64_t n); static inline unsigned int _mesa_fls(unsigned int n) { -#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) +#ifdef HAVE___BUILTIN_CLZ return n == 0 ? 0 : 32 - __builtin_clz(n); #else unsigned int v = 1; |