fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2025-12-24 13:10:10 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

mesa: use gcc __builtin_popcount()

Browse source
This commit is contained in:
Brian Paul 2009-11-23 18:09:46 -07:00
parent 8d80b5400a
commit 863ad9a683
1 changed files with 4 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/mesa/main/imports.c
View file

@ -629,11 +629,15 @@ _mesa_ffsll(int64_t val)
unsigned int
_mesa_bitcount(unsigned int n)
{
#if defined(__GNUC__)
return __builtin_popcount(n);
#else
unsigned int bits;
for (bits = 0; n > 0; n = n >> 1) {
bits += (n & 1);
}
return bits;
#endif
}