[Qemu-devel] [PATCH v2] x86: add AVX512_VPOPCNTDQ features

[He Chen]

AVX512_VPOPCNTDQ: Vector POPCNT instructions for word and qwords.
variable precision.

Signed-off-by: He Chen <address@hidden>
---
Changes from v1:
* Rename vpopcntdq to avx512-vpopcntdq.
---
 target/i386/cpu.c | 2 +-
 target/i386/cpu.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index b0640f1..1a4b164 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -435,7 +435,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
             NULL, "avx512vbmi", "umip", "pku",
             "ospke", NULL, NULL, NULL,
             NULL, NULL, NULL, NULL,
-            NULL, NULL, NULL, NULL,
+            NULL, NULL, "avx512-vpopcntdq", NULL,
             "la57", NULL, NULL, NULL,
             NULL, NULL, "rdpid", NULL,
             NULL, NULL, NULL, NULL,
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index a04e46b..37b209e 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -630,6 +630,7 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS];
 #define CPUID_7_0_ECX_UMIP     (1U << 2)
 #define CPUID_7_0_ECX_PKU      (1U << 3)
 #define CPUID_7_0_ECX_OSPKE    (1U << 4)
+#define CPUID_7_0_ECX_AVX512_VPOPCNTDQ (1U << 14) /* POPCNT for vectors of 
DW/QW */
 #define CPUID_7_0_ECX_LA57     (1U << 16)
 #define CPUID_7_0_ECX_RDPID    (1U << 22)
 
-- 
2.7.4