diff options
Diffstat (limited to 'benchtests/bench-util.h')
| -rw-r--r-- | benchtests/bench-util.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/benchtests/bench-util.h b/benchtests/bench-util.h index d0e29423aa..00f78d649f 100644 --- a/benchtests/bench-util.h +++ b/benchtests/bench-util.h @@ -16,6 +16,13 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ +/* Prevent compiler to optimize away call. */ +#define DO_NOT_OPTIMIZE_OUT(value) \ + ({ \ + __typeof (value) __v = (value); \ + asm volatile ("" : : "r,m" (__v) : "memory"); \ + __v; \ + }) #ifndef START_ITER # define START_ITER (100000000) |