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target/i386: Add support for AVX-NE-CONVERT in CPUID enumeration 

AVX-NE-CONVERT is a new set of instructions which can convert low
precision floating point like BF16/FP16 to high precision floating point
FP32, as well as convert FP32 elements to BF16. This instruction allows
the platform to have improved AI capabilities and better compatibility.

The bit definition:
CPUID.(EAX=7,ECX=1):EDX[bit 5]

Add CPUID definition for AVX-NE-CONVERT.

Signed-off-by: Jiaxi Chen <jiaxi.chen@linux.intel.com>
Signed-off-by: Tao Su <tao1.su@linux.intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20230303065913.1246327-6-tao1.su@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jiaxi Chen 2023-03-03 14:59:12 +08:00 committed by Paolo Bonzini
parent eaaa197d5b
commit ecd2e6ca03
2 changed files with 3 additions and 1 deletions
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2
target/i386/cpu.c
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@ -895,7 +895,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
NULL, NULL, NULL, NULL,
"avx-vnni-int8", NULL, NULL, NULL,
"avx-vnni-int8", "avx-ne-convert", NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,

2
target/i386/cpu.h
View File

@ -923,6 +923,8 @@ uint64_t x86_cpu_get_supported_feature_word(FeatureWord w,
/* Support for VPDPB[SU,UU,SS]D[,S] */
#define CPUID_7_1_EDX_AVX_VNNI_INT8 (1U << 4)
/* AVX NE CONVERT Instructions */
#define CPUID_7_1_EDX_AVX_NE_CONVERT (1U << 5)
/* XFD Extend Feature Disabled */
#define CPUID_D_1_EAX_XFD (1U << 4)