diff options
Diffstat (limited to 'sysdeps/x86/dl-cacheinfo.h')
| -rw-r--r-- | sysdeps/x86/dl-cacheinfo.h | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/sysdeps/x86/dl-cacheinfo.h b/sysdeps/x86/dl-cacheinfo.h index a1c03b8..3d0c8d4 100644 --- a/sysdeps/x86/dl-cacheinfo.h +++ b/sysdeps/x86/dl-cacheinfo.h @@ -988,14 +988,6 @@ dl_init_cacheinfo (struct cpu_features *cpu_features) if (CPU_FEATURE_USABLE_P (cpu_features, FSRM)) rep_movsb_threshold = 2112; - /* Non-temporal stores are more performant on Intel and AMD hardware above - non_temporal_threshold. Enable this for both Intel and AMD hardware. */ - unsigned long int memset_non_temporal_threshold = SIZE_MAX; - if (!CPU_FEATURES_ARCH_P (cpu_features, Avoid_Non_Temporal_Memset) - && (cpu_features->basic.kind == arch_kind_intel - || cpu_features->basic.kind == arch_kind_amd)) - memset_non_temporal_threshold = non_temporal_threshold; - /* For AMD CPUs that support ERMS (Zen3+), REP MOVSB is in a lot of cases slower than the vectorized path (and for some alignments, it is really slow, check BZ #30994). */ @@ -1017,6 +1009,13 @@ dl_init_cacheinfo (struct cpu_features *cpu_features) if (tunable_size != 0) shared = tunable_size; + /* Non-temporal stores are more performant on some hardware above + non_temporal_threshold. Currently Prefer_Non_Temporal is set for for both + Intel and AMD hardware. */ + unsigned long int memset_non_temporal_threshold = SIZE_MAX; + if (!CPU_FEATURES_ARCH_P (cpu_features, Avoid_Non_Temporal_Memset)) + memset_non_temporal_threshold = non_temporal_threshold; + tunable_size = TUNABLE_GET (x86_non_temporal_threshold, long int, NULL); if (tunable_size > minimum_non_temporal_threshold && tunable_size <= maximum_non_temporal_threshold) |