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[committed, PATCH] Use CPU_FEATURES_CPU_P to check if AVX is available
- From: "H.J. Lu" <hongjiu dot lu at intel dot com>
- To: GNU C Library <libc-alpha at sourceware dot org>
- Date: Fri, 17 Mar 2017 11:41:47 -0700
- Subject: [committed, PATCH] Use CPU_FEATURES_CPU_P to check if AVX is available
- Authentication-results: sourceware.org; auth=none
- Reply-to: "H.J. Lu" <hjl dot tools at gmail dot com>
Don't use bit_cpu_AVX directly.
* sysdeps/x86/cpu-features.c (init_cpu_features): Check AVX with
CPU_FEATURES_CPU_P.
---
ChangeLog | 5 +++++
sysdeps/x86/cpu-features.c | 3 +--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 9fd5ebc..4bafcd1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2017-03-17 H.J. Lu <hongjiu.lu@intel.com>
+
+ * sysdeps/x86/cpu-features.c (init_cpu_features): Check AVX with
+ CPU_FEATURES_CPU_P.
+
2017-03-17 Joseph Myers <joseph@codesourcery.com>
[BZ #21259]
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index 4e8f179..33788ed 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -126,7 +126,6 @@ init_cpu_features (struct cpu_features *cpu_features)
if (family == 0x06)
{
- ecx = cpu_features->cpuid[COMMON_CPUID_INDEX_1].ecx;
model += extended_model;
switch (model)
{
@@ -176,7 +175,7 @@ init_cpu_features (struct cpu_features *cpu_features)
default:
/* Unknown family 0x06 processors. Assuming this is one
of Core i3/i5/i7 processors if AVX is available. */
- if ((ecx & bit_cpu_AVX) == 0)
+ if (!CPU_FEATURES_CPU_P (cpu_features, AVX))
break;
case 0x1a:
--
2.9.3