floraachy
/
OpenBLAS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

On x86-64, make MB/WMB compiler barriers 

Whie on x86(64) one does not normally need full memory barriers, it's
good practice to at least use compiler barriers for places where on other
architectures memory barriers are used; this prevents the compiler
from over-optimizing.
This commit is contained in:
Arjan van de Ven 2018-06-17 17:53:15 +00:00
parent 73de17664d
commit 7e39ffe113
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
common_x86_64.h
View File

@ -60,8 +60,13 @@
#endif
*/
#ifdef __GNUC__
#define MB __asm__ __volatile__("": : :"memory")
#define WMB __asm__ __volatile__("": : :"memory")
#else
#define MB
#define WMB
#endif
static void __inline blas_lock(volatile BLASULONG *address){