From: H.J. Lu <hjl.tools@gmail.com>
Date: Tue, 15 Dec 2015 19:46:54 +0000 (-0800)
Subject: Enable Silvermont optimizations for Knights Landing
X-Git-Tag: glibc-2.23~121
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c9afcaaafaf9126a973883528eed8d0058a264c0;p=thirdparty%2Fglibc.git

Enable Silvermont optimizations for Knights Landing

Knights Landing processor is based on Silvermont.  This patch enables
Silvermont optimizations for Knights Landing.

	* sysdeps/x86/cpu-features.c (init_cpu_features): Enable
	Silvermont optimizations for Knights Landing.
---

diff --git a/ChangeLog b/ChangeLog
index 7995a58067d..5bff90f8864 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2015-12-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* sysdeps/x86/cpu-features.c (init_cpu_features): Enable
+	Silvermont optimizations for Knights Landing.
+
 2015-12-15  Andreas Schwab  <schwab@suse.de>
 
 	[BZ #17197]
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index fba3ef02a71..aff894cc1ee 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -78,6 +78,9 @@ init_cpu_features (struct cpu_features *cpu_features)
 	      cpu_features->feature[index_Slow_BSF] |= bit_Slow_BSF;
 	      break;
 
+	    case 0x57:
+	      /* Knights Landing.  Enable Silvermont optimizations.  */
+
 	    case 0x37:
 	    case 0x4a:
 	    case 0x4d: