diff mbox

[committed] Enable Silvermont optimizations for Knights Landing

Message ID 20151215194935.GA8283@intel.com
State Committed
Headers

Commit Message

Lu, Hongjiu Dec. 15, 2015, 7:49 p.m. UTC 
  Knights Landing processor is based on Silvermont.  This patch enables
Silvermont optimizations for Knights Landing.

Tested on i686, x86-64 and x32.  Checked into master branch.


H.J.
---
	* sysdeps/x86/cpu-features.c (init_cpu_features): Enable
	Silvermont optimizations for Knights Landing.
---
 ChangeLog                  | 5 +++++
 sysdeps/x86/cpu-features.c | 3 +++
 2 files changed, 8 insertions(+)
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Patch

diff --git a/ChangeLog b/ChangeLog
index 7995a58..5bff90f 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 fba3ef0..aff894c 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: