Implement vect_cmdline_needed properly on sparc.

	* lib/target-supports.exp (check_effective_target_sparc_vis): New.
	(check_effective_target_vect_cmdline_needed): Use it when sparc*-*-*

From-SVN: r181190

gcc/testsuite/ChangeLog

+2011-11-08  David S. Miller  <davem@davemloft.net>
+
+	* lib/target-supports.exp (check_effective_target_sparc_vis): New.
+	(check_effective_target_vect_cmdline_needed): Use it when sparc*-*-*
+
 2011-11-08  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
 
 	PR fortran/50404

gcc/testsuite/lib/target-supports.exp

@@ -1775,6 +1775,7 @@ proc check_effective_target_vect_cmdline_needed { } {
 	     || ([istarget powerpc*-*-*]
 		 && ([check_effective_target_powerpc_spe]
 		     || [check_effective_target_powerpc_altivec]))
+	     || ([istarget sparc*-*-*] && [check_effective_target_sparc_vis])
              || [istarget spu-*-*]
 	     || ([istarget arm*-*-*] && [check_effective_target_arm_neon]) } {
 	   set et_vect_cmdline_needed_saved 0
@@ -2489,6 +2490,22 @@ proc check_effective_target_ultrasparc_vis3_hw { } {
     } "-mcpu=niagara3"]
 }
 
+# Return 1 if this is a Sparc target with VIS enabled.
+
+proc check_effective_target_sparc_vis { } {
+    if { [istarget sparc*-*-*] } {
+	return [check_no_compiler_messages sparc_vis object {
+	    #ifndef __VIS__
+	    #error not VIS
+	    #else
+	    int dummy;
+	    #endif
+	}]
+    } else {
+	return 0
+    }
+}
+
 # Return 1 if the target supports hardware vector shift operation.
 
 proc check_effective_target_vect_shift { } {