Add Knights Landing support to __builtin_cpu_is

This patch adds Knights Landing support to __builtin_cpu_is.

gcc/testsuite/

	* gcc.target/i386/builtin_target.c (check_intel_cpu_model):
	Check Knights Landing support.

libgcc/

	* config/i386/cpuinfo.c (processor_types): Add INTEL_KNL.
	(get_intel_cpu): Add Knights Landing support.

From-SVN: r226817

gcc/testsuite/ChangeLog

+2015-08-12  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* gcc.target/i386/builtin_target.c (check_intel_cpu_model):
+	Check Knights Landing support.
+
 2015-08-12  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/47461

gcc/testsuite/gcc.target/i386/builtin_target.c

@@ -38,6 +38,10 @@ check_intel_cpu_model (unsigned int family, unsigned int model,
 	      /* Silvermont.  */
 	      assert (__builtin_cpu_is ("silvermont"));
 	      break;
+	    case 0x57:
+	      /* Knights Landing.  */
+	      assert (__builtin_cpu_is ("knl"));
+	      break;
 	    case 0x1a:
 	    case 0x1e:
 	    case 0x1f:

libgcc/ChangeLog

+2015-08-12  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config/i386/cpuinfo.c (processor_types): Add INTEL_KNL.
+	(get_intel_cpu): Add Knights Landing support.
+
 2015-08-11  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/66954

libgcc/config/i386/cpuinfo.c

@@ -56,6 +56,7 @@ enum processor_types
   AMDFAM10H,
   AMDFAM15H,
   INTEL_SILVERMONT,
+  INTEL_KNL,
   AMD_BTVER1,
   AMD_BTVER2,  
   CPU_TYPE_MAX
@@ -197,6 +198,10 @@ get_intel_cpu (unsigned int family, unsigned int model, unsigned int brand_id)
 	      /* Silvermont.  */
 	      __cpu_model.__cpu_type = INTEL_SILVERMONT;
 	      break;
+	    case 0x57:
+	      /* Knights Landing.  */
+	      __cpu_model.__cpu_type = INTEL_KNL;
+	      break;
 	    case 0x1a:
 	    case 0x1e:
 	    case 0x1f: