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* [glibc] <sys/platform/x86.h>: Add PREFETCHI 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=81a3cc956ef4e324c83419fa6d7a559d6e762cd7
commit 81a3cc956ef4e324c83419fa6d7a559d6e762cd7
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Apr 5 09:21:44 2023 -0700
<sys/platform/x86.h>: Add PREFETCHI support
Add PREFETCHI 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 | 1 +
sysdeps/x86/include/cpu-features.h | 3 +++
sysdeps/x86/tst-get-cpu-features.c | 2 ++
5 files changed, 10 insertions(+)
diff --git a/manual/platform.texi b/manual/platform.texi
index e7448ffc1a..c6ed73cb97 100644
--- a/manual/platform.texi
+++ b/manual/platform.texi
@@ -533,6 +533,9 @@ extended state management using XSAVE/XRSTOR.
@item
@code{PREFETCHWT1} -- PREFETCHWT1 instruction.
+@item
+@code{PREFETCHI} -- PREFETCHIT0/1 instructions.
+
@item
@code{PSE} -- Page Size Extension.
diff --git a/sysdeps/x86/bits/platform/x86.h b/sysdeps/x86/bits/platform/x86.h
index 96eb4c070d..6555f9b91d 100644
--- a/sysdeps/x86/bits/platform/x86.h
+++ b/sysdeps/x86/bits/platform/x86.h
@@ -311,6 +311,7 @@ enum
x86_cpu_AVX_VNNI_INT8 = x86_cpu_index_7_ecx_1_edx + 4,
x86_cpu_AVX_NE_CONVERT = x86_cpu_index_7_ecx_1_edx + 5,
x86_cpu_AMX_COMPLEX = x86_cpu_index_7_ecx_1_edx + 8,
+ x86_cpu_PREFETCHI = x86_cpu_index_7_ecx_1_edx + 14,
x86_cpu_index_19_ebx
= (CPUID_INDEX_19 * 8 * 4 * sizeof (unsigned int)
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index c2bea6a32d..5bff8ec0b4 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -104,6 +104,7 @@ update_active (struct cpu_features *cpu_features)
CPU_FEATURE_SET_ACTIVE (cpu_features, FZLRM);
CPU_FEATURE_SET_ACTIVE (cpu_features, FSRS);
CPU_FEATURE_SET_ACTIVE (cpu_features, FSRCS);
+ CPU_FEATURE_SET_ACTIVE (cpu_features, PREFETCHI);
CPU_FEATURE_SET_ACTIVE (cpu_features, PTWRITE);
if (!CPU_FEATURES_CPU_P (cpu_features, RTM_ALWAYS_ABORT))
diff --git a/sysdeps/x86/include/cpu-features.h b/sysdeps/x86/include/cpu-features.h
index f14c1078d5..40b8129d6a 100644
--- a/sysdeps/x86/include/cpu-features.h
+++ b/sysdeps/x86/include/cpu-features.h
@@ -318,6 +318,7 @@ enum
#define bit_cpu_AVX_VNNI_INT8 (1u << 4)
#define bit_cpu_AVX_NE_CONVERT (1u << 5)
#define bit_cpu_AMX_COMPLEX (1u << 8)
+#define bit_cpu_PREFETCHI (1u << 14)
/* CPUID_INDEX_19. */
@@ -560,6 +561,7 @@ enum
#define index_cpu_AVX_VNNI_INT8 CPUID_INDEX_7_ECX_1
#define index_cpu_AVX_NE_CONVERT CPUID_INDEX_7_ECX_1
#define index_cpu_AMX_COMPLEX CPUID_INDEX_7_ECX_1
+#define index_cpu_PREFETCHI CPUID_INDEX_7_ECX_1
/* CPUID_INDEX_19. */
@@ -804,6 +806,7 @@ enum
#define reg_AVX_VNNI_INT8 edx
#define reg_AVX_NE_CONVERT edx
#define reg_AMX_COMPLEX edx
+#define reg_PREFETCHI edx
/* CPUID_INDEX_19. */
diff --git a/sysdeps/x86/tst-get-cpu-features.c b/sysdeps/x86/tst-get-cpu-features.c
index 87fe27340f..1bd7e0be53 100644
--- a/sysdeps/x86/tst-get-cpu-features.c
+++ b/sysdeps/x86/tst-get-cpu-features.c
@@ -218,6 +218,7 @@ do_test (void)
CHECK_CPU_FEATURE_PRESENT (AVX_VNNI_INT8);
CHECK_CPU_FEATURE_PRESENT (AVX_NE_CONVERT);
CHECK_CPU_FEATURE_PRESENT (AMX_COMPLEX);
+ CHECK_CPU_FEATURE_PRESENT (PREFETCHI);
CHECK_CPU_FEATURE_PRESENT (AESKLE);
CHECK_CPU_FEATURE_PRESENT (WIDE_KL);
CHECK_CPU_FEATURE_PRESENT (PTWRITE);
@@ -388,6 +389,7 @@ do_test (void)
CHECK_CPU_FEATURE_ACTIVE (AVX_VNNI_INT8);
CHECK_CPU_FEATURE_ACTIVE (AVX_NE_CONVERT);
CHECK_CPU_FEATURE_ACTIVE (AMX_COMPLEX);
+ CHECK_CPU_FEATURE_ACTIVE (PREFETCHI);
CHECK_CPU_FEATURE_ACTIVE (AESKLE);
CHECK_CPU_FEATURE_ACTIVE (WIDE_KL);
CHECK_CPU_FEATURE_ACTIVE (PTWRITE);
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