commit c9afcaaafaf9126a973883528eed8d0058a264c0

Author: H.J. Lu <hjl.tools@gmail.com>

Date:   Tue Dec 15 11:46:54 2015 -0800

    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/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: