diff options
Diffstat (limited to 'sysdeps/x86')
| -rw-r--r-- | sysdeps/x86/cpu-features.c | 8 | ||||
| -rw-r--r-- | sysdeps/x86/cpu-features.h | 15 |
2 files changed, 21 insertions, 2 deletions
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c index 11b9af2231..8f8cfce5b6 100644 --- a/sysdeps/x86/cpu-features.c +++ b/sysdeps/x86/cpu-features.c @@ -133,8 +133,6 @@ init_cpu_features (struct cpu_features *cpu_features) case 0x57: /* Knights Landing. Enable Silvermont optimizations. */ - cpu_features->feature[index_arch_Prefer_No_VZEROUPPER] - |= bit_arch_Prefer_No_VZEROUPPER; case 0x5c: case 0x5f: @@ -206,6 +204,12 @@ init_cpu_features (struct cpu_features *cpu_features) cpu_features->feature[index_arch_AVX_Fast_Unaligned_Load] |= bit_arch_AVX_Fast_Unaligned_Load; + /* Since AVX512ER is unique to Xeon Phi, set Prefer_No_VZEROUPPER + if AVX512ER is available. */ + if (CPU_FEATURES_CPU_P (cpu_features, AVX512ER)) + cpu_features->feature[index_arch_Prefer_No_VZEROUPPER] + |= bit_arch_Prefer_No_VZEROUPPER; + /* To avoid SSE transition penalty, use _dl_runtime_resolve_slow. If XGETBV suports ECX == 1, use _dl_runtime_resolve_opt. */ cpu_features->feature[index_arch_Use_dl_runtime_resolve_slow] diff --git a/sysdeps/x86/cpu-features.h b/sysdeps/x86/cpu-features.h index a8b5a734bd..265bc6c14d 100644 --- a/sysdeps/x86/cpu-features.h +++ b/sysdeps/x86/cpu-features.h @@ -62,6 +62,11 @@ #define bit_cpu_AVX2 (1 << 5) #define bit_cpu_AVX512F (1 << 16) #define bit_cpu_AVX512DQ (1 << 17) +#define bit_cpu_AVX512PF (1 << 26) +#define bit_cpu_AVX512ER (1 << 27) +#define bit_cpu_AVX512CD (1 << 28) +#define bit_cpu_AVX512BW (1 << 30) +#define bit_cpu_AVX512VL (1u << 31) /* XCR0 Feature flags. */ #define bit_XMM_state (1 << 1) @@ -236,6 +241,11 @@ extern const struct cpu_features *__get_cpu_features (void) # define index_cpu_AVX2 COMMON_CPUID_INDEX_7 # define index_cpu_AVX512F COMMON_CPUID_INDEX_7 # define index_cpu_AVX512DQ COMMON_CPUID_INDEX_7 +# define index_cpu_AVX512PF COMMON_CPUID_INDEX_7 +# define index_cpu_AVX512ER COMMON_CPUID_INDEX_7 +# define index_cpu_AVX512CD COMMON_CPUID_INDEX_7 +# define index_cpu_AVX512BW COMMON_CPUID_INDEX_7 +# define index_cpu_AVX512VL COMMON_CPUID_INDEX_7 # define index_cpu_ERMS COMMON_CPUID_INDEX_7 # define index_cpu_RTM COMMON_CPUID_INDEX_7 # define index_cpu_FMA COMMON_CPUID_INDEX_1 @@ -254,6 +264,11 @@ extern const struct cpu_features *__get_cpu_features (void) # define reg_AVX2 ebx # define reg_AVX512F ebx # define reg_AVX512DQ ebx +# define reg_AVX512PF ebx +# define reg_AVX512ER ebx +# define reg_AVX512CD ebx +# define reg_AVX512BW ebx +# define reg_AVX512VL ebx # define reg_ERMS ebx # define reg_RTM ebx # define reg_FMA ecx |