Use leon3 target for native LEON on Linux.

2015-09-28  Daniel Cederman  <cederman@gaisler.com>

Use leon3 target for native LEON on Linux. Linux requires LEON version 3 or
above with CASA support.

gcc/
	* config/sparc/driver-sparc.c: map LEON to leon3

From-SVN: r228185

gcc/ChangeLog

 2015-09-28  Daniel Cederman  <cederman@gaisler.com>
 
+	* config/sparc/driver-sparc.c: map LEON to leon3
+
+2015-09-28  Daniel Cederman  <cederman@gaisler.com>
+
 	* config/sparc/sparc.opt: Rename mask from USER_MODE to SV_MODE
 	  and make it inverse to change default
 	* config/sparc/sync.md: Only use supervisor ASI for CASA when in

gcc/config/sparc/driver-sparc.c

@@ -73,6 +73,7 @@ static const struct cpu_names {
   { "UltraSparc T2",	"niagara2" },
   { "UltraSparc T3",	"niagara3" },
   { "UltraSparc T4",	"niagara4" },
+  { "LEON",		"leon3" },
 #endif
   { NULL,	NULL }
   };