Disallow -mfpu=neon for unsuitable architectures.

2014-09-17  Andrew Stubbs  <ams@codesourcery.com>

	* config/arm/arm.c (arm_option_override): Reject -mfpu=neon
	when architecture is older than ARMv7.

From-SVN: r215321

gcc/ChangeLog

+2014-09-17  Andrew Stubbs  <ams@codesourcery.com>
+
+	* config/arm/arm.c (arm_option_override): Reject -mfpu=neon
+	when architecture is older than ARMv7.
+
 2014-09-16  John David Anglin  <danglin@gcc.gnu.org>
 
 	PR target/61853

gcc/config/arm/arm.c

@@ -2845,6 +2845,9 @@ arm_option_override (void)
 
   arm_fpu_desc = &all_fpus[arm_fpu_index];
 
+  if (TARGET_NEON && !arm_arch7)
+    error ("target CPU does not support NEON");
+
   switch (arm_fpu_desc->model)
     {
     case ARM_FP_MODEL_VFP: