Update -march=native/-mtune=native for Intel Core 2 and Core i7.

2010-11-02  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/driver-i386.c (host_detect_local_cpu): Updated
	for Intel Core 2 and Core i7.

From-SVN: r166197

gcc/ChangeLog

+2010-11-02  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config/i386/driver-i386.c (host_detect_local_cpu): Updated
+	for Intel Core 2 and Core i7.
+
 2010-11-02  Maxim Kuvyrkov  <maxim@codesourcery.com>
 
 	Model decoder of Core 2/i7 for multipass scheduling.

gcc/config/i386/driver-i386.c

@@ -554,21 +554,21 @@ const char *host_detect_local_cpu (int argc, const char **argv)
 	case 0x1e:
 	case 0x1f:
 	case 0x2e:
-	  /* FIXME: Optimize for Nehalem.  */
-	  cpu = "core2";
+	  /* Nehalem.  */
+	  cpu = "corei7";
 	  break;
 	case 0x25:
 	case 0x2f:
-	  /* FIXME: Optimize for Westmere.  */
-	  cpu = "core2";
+	  /* Westmere.  */
+	  cpu = "corei7";
 	  break;
 	case 0x17:
 	case 0x1d:
-	  /* Penryn.  FIXME: -mtune=core2 is slower than -mtune=generic  */
+	  /* Penryn.  */
 	  cpu = "core2";
 	  break;
 	case 0x0f:
-	  /* Merom.  FIXME: -mtune=core2 is slower than -mtune=generic  */
+	  /* Merom.  */
 	  cpu = "core2";
 	  break;
 	default: