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* [glibc] <sys/platform/x86.h>: Add AVX-IFMA support
@ 2023-04-05 22:45 H.J. Lu
0 siblings, 0 replies; only message in thread
From: H.J. Lu @ 2023-04-05 22:45 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=96037c697d5a5b1bc19caae74dddf45e041b0ffd
commit 96037c697d5a5b1bc19caae74dddf45e041b0ffd
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Apr 5 09:21:39 2023 -0700
<sys/platform/x86.h>: Add AVX-IFMA support
Add AVX-IFMA support to <sys/platform/x86.h>.
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
Diff:
---
manual/platform.texi | 3 +++
sysdeps/x86/bits/platform/x86.h | 1 +
sysdeps/x86/cpu-features.c | 2 ++
sysdeps/x86/include/cpu-features.h | 3 +++
sysdeps/x86/tst-get-cpu-features.c | 2 ++
5 files changed, 11 insertions(+)
diff --git a/manual/platform.texi b/manual/platform.texi
index 7d4aa3d339..af75e5c413 100644
--- a/manual/platform.texi
+++ b/manual/platform.texi
@@ -219,6 +219,9 @@ Leaf (EAX = 23H).
@item
@code{AVX2} -- The AVX2 instruction extensions.
+@item
+@code{AVX_IFMA} -- The AVX-IFMA instruction extensions.
+
@item
@code{AVX_VNNI} -- The AVX-VNNI instruction extensions.
diff --git a/sysdeps/x86/bits/platform/x86.h b/sysdeps/x86/bits/platform/x86.h
index 2776c69b16..abc0116607 100644
--- a/sysdeps/x86/bits/platform/x86.h
+++ b/sysdeps/x86/bits/platform/x86.h
@@ -300,6 +300,7 @@ enum
x86_cpu_WRMSRNS = x86_cpu_index_7_ecx_1_eax + 19,
x86_cpu_AMX_FP16 = x86_cpu_index_7_ecx_1_eax + 21,
x86_cpu_HRESET = x86_cpu_index_7_ecx_1_eax + 22,
+ x86_cpu_AVX_IFMA = x86_cpu_index_7_ecx_1_eax + 23,
x86_cpu_LAM = x86_cpu_index_7_ecx_1_eax + 26,
x86_cpu_index_19_ebx
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index 6c1b5efc5f..06fae443a8 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -139,6 +139,8 @@ update_active (struct cpu_features *cpu_features)
cpu_features->preferred[index_arch_AVX_Fast_Unaligned_Load]
|= bit_arch_AVX_Fast_Unaligned_Load;
}
+ /* Determine if AVX-IFMA is usable. */
+ CPU_FEATURE_SET_ACTIVE (cpu_features, AVX_IFMA);
/* Determine if AVX-VNNI is usable. */
CPU_FEATURE_SET_ACTIVE (cpu_features, AVX_VNNI);
/* Determine if FMA is usable. */
diff --git a/sysdeps/x86/include/cpu-features.h b/sysdeps/x86/include/cpu-features.h
index 07c841c1d4..1f4b6831f9 100644
--- a/sysdeps/x86/include/cpu-features.h
+++ b/sysdeps/x86/include/cpu-features.h
@@ -311,6 +311,7 @@ enum
#define bit_cpu_FSRCS (1u << 12)
#define bit_cpu_AMX_FP16 (1u << 21)
#define bit_cpu_HRESET (1u << 22)
+#define bit_cpu_AVX_IFMA (1u << 23)
#define bit_cpu_LAM (1u << 26)
/* CPUID_INDEX_19. */
@@ -549,6 +550,7 @@ enum
#define index_cpu_FSRCS CPUID_INDEX_7_ECX_1
#define index_cpu_AMX_FP16 CPUID_INDEX_7_ECX_1
#define index_cpu_HRESET CPUID_INDEX_7_ECX_1
+#define index_cpu_AVX_IFMA CPUID_INDEX_7_ECX_1
#define index_cpu_LAM CPUID_INDEX_7_ECX_1
/* CPUID_INDEX_19. */
@@ -787,6 +789,7 @@ enum
#define reg_FSRCS eax
#define reg_AMX_FP16 eax
#define reg_HRESET eax
+#define reg_AVX_IFMA eax
#define reg_LAM eax
/* CPUID_INDEX_19. */
diff --git a/sysdeps/x86/tst-get-cpu-features.c b/sysdeps/x86/tst-get-cpu-features.c
index c0f222cb77..3a2d4671ec 100644
--- a/sysdeps/x86/tst-get-cpu-features.c
+++ b/sysdeps/x86/tst-get-cpu-features.c
@@ -212,6 +212,7 @@ do_test (void)
CHECK_CPU_FEATURE_PRESENT (WRMSRNS);
CHECK_CPU_FEATURE_PRESENT (AMX_FP16);
CHECK_CPU_FEATURE_PRESENT (HRESET);
+ CHECK_CPU_FEATURE_PRESENT (AVX_IFMA);
CHECK_CPU_FEATURE_PRESENT (LAM);
CHECK_CPU_FEATURE_PRESENT (AESKLE);
CHECK_CPU_FEATURE_PRESENT (WIDE_KL);
@@ -379,6 +380,7 @@ do_test (void)
CHECK_CPU_FEATURE_ACTIVE (FSRS);
CHECK_CPU_FEATURE_ACTIVE (FSRCS);
CHECK_CPU_FEATURE_ACTIVE (AMX_FP16);
+ CHECK_CPU_FEATURE_ACTIVE (AVX_IFMA);
CHECK_CPU_FEATURE_ACTIVE (AESKLE);
CHECK_CPU_FEATURE_ACTIVE (WIDE_KL);
CHECK_CPU_FEATURE_ACTIVE (PTWRITE);
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