diff mbox series

[v2,5/6] target/i386: Add support for AVX-NE-CONVERT in CPUID enumeration

Message ID 20230303065913.1246327-6-tao1.su@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series target/i386: Support new Intel platform Instructions in CPUID enumeration | expand

Commit Message

Tao Su March 3, 2023, 6:59 a.m. UTC 
From: Jiaxi Chen <jiaxi.chen@linux.intel.com>

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>
---
 target/i386/cpu.c | 2 +-
 target/i386/cpu.h | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 246d10aa49..eee1e5c25f 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -892,7 +892,7 @@  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,
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index d53b960f23..14876938c1 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -920,6 +920,8 @@  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)