fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2025-12-27 08:20:12 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

meson: Test for __atomic_add_fetch in atomic checks

Browse source 
Some platforms have 64-bit __atomic_load_n but not 64-bit
__atomic_add_fetch, so test for both of them.

Bug: https://bugs.gentoo.org/655616
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
This commit is contained in:
Andrew Galante 2018-06-11 15:03:36 -07:00 • committed by Matt Turner
parent b29b5a82a1
commit 9d547a7617
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
meson.build
View file

@ -835,7 +835,9 @@ if cc.compiles('''#include <stdint.h>
struct {
uint64_t *v;
} x;
return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE);
return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) &
(int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL);
}''',
name : 'GCC atomic builtins')
pre_args += '-DUSE_GCC_ATOMIC_BUILTINS'
@ -851,7 +853,8 @@ if cc.compiles('''#include <stdint.h>
struct {
uint64_t *v;
} x;
return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE);
return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) &
(int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL);
}''',
name : 'GCC atomic builtins required -latomic')
dep_atomic = cc.find_library('atomic')