<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 --git a/manual/platform.texi b/manual/platform.texi
index 7d4aa3d3398149f3ae8010b9369cc001d93cda3c..af75e5c4133eb008f271bf9c0fa5719ed56074f1 100644 (file)
--- 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 2776c69b16b7557d26243c7231d0561ca32c80bd..abc0116607ee43d192f9677f1d232bfae9230f67 100644 (file)
--- 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 6c1b5efc5f4b48f05d0d28b4b3c14da801be3f50..06fae443a8628ee3845fff01b5b395a85cc39264 100644 (file)
--- 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 07c841c1d4af84ff108e8161d9ef8eac2547fd05..1f4b6831f9cec445883a65736aa182837de35330 100644 (file)
--- 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 c0f222cb77438539b230f9f7d9b286e9071c1aae..3a2d4671ec29e7f337878c8f7235828abe779133 100644 (file)
--- 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);