fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-09 04:38:03 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

i965: Use compiler builtins when available

Browse source 
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-02-08 22:58:35 +00:00
parent 8ea6e98c7b
commit 41260a9bf6
4 changed files with 25 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/mesa/drivers/dri/i965/brw_util.c
View file

@ -37,16 +37,6 @@
#include "brw_util.h"
#include "brw_defines.h"
GLuint brw_count_bits(uint64_t val)
{
GLuint i;
for (i = 0; val ; val >>= 1)
if (val & 1)
i++;
return i;
}
GLuint brw_translate_blend_equation( GLenum mode )
{
switch (mode) {

9
src/mesa/drivers/dri/i965/brw_util.h
View file

@ -35,7 +35,14 @@
#include "main/mtypes.h"
extern GLuint brw_count_bits(uint64_t val);
#ifdef __GNUC__
#define brw_count_bits(v) __builtin_popcount(v)
#else
static inline GLuint brw_count_bits(uint64_t v)
{
return _mesa_popcount(v>>32) + _mesa_popcount(v&0xffffffff);
}
#endif
extern GLuint brw_parameter_list_state_flags(struct gl_program_parameter_list *paramList);
extern GLuint brw_translate_blend_factor( GLenum factor );
extern GLuint brw_translate_blend_equation( GLenum mode );

13
src/mesa/main/imports.c
View file

@ -453,6 +453,7 @@ _mesa_inv_sqrtf(float n)
#endif
}
#ifndef __GNUC__
/**
* Find the first bit set in a word.
*/
@ -496,9 +497,6 @@ _mesa_ffs(int32_t i)
int
_mesa_ffsll(int64_t val)
{
#ifdef ffsll
return ffsll(val);
#else
int bit;
assert(sizeof(val) == 8);
@ -512,27 +510,24 @@ _mesa_ffsll(int64_t val)
return 32 + bit;
return 0;
#endif
}
#if ((_GNUC__ == 3 && __GNUC_MINOR__ < 4) || __GNUC__ < 4)
/**
* Return number of bits set in given GLuint.
*/
unsigned int
_mesa_bitcount(unsigned int n)
{
#if defined(__GNUC__) && \
((_GNUC__ == 3 && __GNUC_MINOR__ >= 4) || __GNUC__ >= 4)
return __builtin_popcount(n);
#else
unsigned int bits;
for (bits = 0; n > 0; n = n >> 1) {
bits += (n & 1);
}
return bits;
#endif
}
#endif
#endif
/**

13
src/mesa/main/imports.h
View file

@ -539,6 +539,18 @@ _mesa_inv_sqrtf(float x);
extern void
_mesa_init_sqrt_table(void);
#ifdef __GNUC__
#define _mesa_ffs(i) ffs(i)
#define _mesa_ffsll(i) ffsll(i)
#if ((_GNUC__ == 3 && __GNUC_MINOR__ >= 4) || __GNUC__ >= 4)
#define _mesa_bitcount(i) __builtin_popcount(i)
#else
extern unsigned int
_mesa_bitcount(unsigned int n);
#endif
#else
extern int
_mesa_ffs(int32_t i);
@ -547,6 +559,7 @@ _mesa_ffsll(int64_t i);
extern unsigned int
_mesa_bitcount(unsigned int n);
#endif
extern GLhalfARB
_mesa_float_to_half(float f);