diff options
| -rw-r--r-- | sysdeps/x86/cpu-features.c | 9 | ||||
| -rw-r--r-- | sysdeps/x86/dl-cacheinfo.h | 2 |
2 files changed, 8 insertions, 3 deletions
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c index e6139e2837..1f30e237f5 100644 --- a/sysdeps/x86/cpu-features.c +++ b/sysdeps/x86/cpu-features.c @@ -756,9 +756,9 @@ init_cpu_features (struct cpu_features *cpu_features) unsigned int stepping = 0; enum cpu_features_kind kind; - /* Default is avoid non-temporal memset for non Intel/AMD hardware. This is, + /* Default is avoid non-temporal memset for non Intel/AMD/Hygon hardware. This is, as of writing this, we only have benchmarks indicatings it profitability - on Intel/AMD. */ + on Intel/AMD/Hygon. */ cpu_features->preferred[index_arch_Avoid_Non_Temporal_Memset] |= bit_arch_Avoid_Non_Temporal_Memset; @@ -1116,6 +1116,11 @@ https://www.intel.com/content/www/us/en/support/articles/000059422/processors.ht get_extended_indices (cpu_features); update_active (cpu_features); + + /* Benchmarks indicate non-temporal memset can be profitable on Hygon + hardware. */ + cpu_features->preferred[index_arch_Avoid_Non_Temporal_Memset] + &= ~bit_arch_Avoid_Non_Temporal_Memset; } else { diff --git a/sysdeps/x86/dl-cacheinfo.h b/sysdeps/x86/dl-cacheinfo.h index 8f4fe98d88..e9579505a3 100644 --- a/sysdeps/x86/dl-cacheinfo.h +++ b/sysdeps/x86/dl-cacheinfo.h @@ -1071,7 +1071,7 @@ dl_init_cacheinfo (struct cpu_features *cpu_features) /* 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. */ + Intel, AMD and Hygon 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; |