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<sys/platform/x86.h>: Add AVX-VNNI support

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Add AVX-VNNI support to <sys/platform/x86.h>.
This commit is contained in:
H.J. Lu 2020-10-08 08:33:45 -07:00
parent ebe454bcca
commit 875a50ff63
4 changed files with 10 additions and 0 deletions
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3
manual/platform.texi
View file

@ -198,6 +198,9 @@ The supported processor features are:
@item
@code{AVX2} -- The AVX2 instruction extensions.
@item
@code{AVX_VNNI} -- The AVX-VNNI instruction extensions.
@item
@code{AVX512_4FMAPS} -- The AVX512_4FMAPS instruction extensions.

2
sysdeps/x86/cpu-features.c
View file

@ -119,6 +119,8 @@ update_usable (struct cpu_features *cpu_features)
cpu_features->preferred[index_arch_AVX_Fast_Unaligned_Load]
|= bit_arch_AVX_Fast_Unaligned_Load;
}
/* Determine if AVX-VNNI is usable. */
CPU_FEATURE_SET_USABLE (cpu_features, AVX_VNNI);
/* Determine if FMA is usable. */
CPU_FEATURE_SET_USABLE (cpu_features, FMA);
/* Determine if VAES is usable. */

3
sysdeps/x86/sys/platform/x86.h
View file

@ -311,6 +311,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
/* COMMON_CPUID_INDEX_7_ECX_1. */
/* EAX. */
#define bit_cpu_AVX_VNNI (1u << 4)
#define bit_cpu_AVX512_BF16 (1u << 5)
/* COMMON_CPUID_INDEX_19. */
@ -530,6 +531,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
/* COMMON_CPUID_INDEX_7_ECX_1. */
/* EAX. */
#define index_cpu_AVX_VNNI COMMON_CPUID_INDEX_7_ECX_1
#define index_cpu_AVX512_BF16 COMMON_CPUID_INDEX_7_ECX_1
/* COMMON_CPUID_INDEX_19. */
@ -749,6 +751,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
/* COMMON_CPUID_INDEX_7_ECX_1. */
/* EAX. */
#define reg_AVX_VNNI eax
#define reg_AVX512_BF16 eax
/* COMMON_CPUID_INDEX_19. */

2
sysdeps/x86/tst-get-cpu-features.c
View file

@ -221,6 +221,7 @@ do_test (void)
CHECK_CPU_FEATURE (XFD);
CHECK_CPU_FEATURE (INVARIANT_TSC);
CHECK_CPU_FEATURE (WBNOINVD);
CHECK_CPU_FEATURE (AVX_VNNI);
CHECK_CPU_FEATURE (AVX512_BF16);
CHECK_CPU_FEATURE (AESKLE);
CHECK_CPU_FEATURE (WIDE_KL);
@ -376,6 +377,7 @@ do_test (void)
CHECK_CPU_FEATURE_USABLE (XFD);
CHECK_CPU_FEATURE_USABLE (INVARIANT_TSC);
CHECK_CPU_FEATURE_USABLE (WBNOINVD);
CHECK_CPU_FEATURE_USABLE (AVX_VNNI);
CHECK_CPU_FEATURE_USABLE (AVX512_BF16);
CHECK_CPU_FEATURE_USABLE (AESKLE);
CHECK_CPU_FEATURE_USABLE (WIDE_KL);