[AArch64] Error out of arm_neon.h if nofp/nosimd

	* config/aarch64/arm_neon.h: Error out if AdvancedSIMD
	is not available.

	* gcc.target/aarch64/arm_neon-nosimd-error.c: New test.

From-SVN: r219594

gcc/ChangeLog

 2015-01-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
+	* config/aarch64/arm_neon.h: Error out if AdvancedSIMD
+	is not available.
+
+2015-01-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
 	* doc/invoke.texi (mapcs): Mention deprecation.
 	(mapcs-frame): Likewise.
 

gcc/config/aarch64/arm_neon.h

@@ -27,6 +27,10 @@
 #ifndef _AARCH64_NEON_H_
 #define _AARCH64_NEON_H_
 
+#ifndef __ARM_NEON
+#error You must enable AdvancedSIMD instructions to use arm_neon.h
+#else
+
 #include <stdint.h>
 
 #define __AARCH64_UINT64_C(__C) ((uint64_t) __C)
@@ -25209,3 +25213,5 @@ __INTERLEAVE_LIST (zip)
 #undef __aarch64_vdupq_laneq_u64
 
 #endif
+
+#endif

gcc/testsuite/ChangeLog

+2015-01-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* gcc.target/aarch64/arm_neon-nosimd-error.c: New test.
+
 2015-01-14  Thomas Preud'homme  <thomas.preudhomme@arm.com>
 
 	PR target/64453

gcc/testsuite/gcc.target/aarch64/arm_neon-nosimd-error.c

+/* { dg-do compile } */
+/* { dg-options "-mgeneral-regs-only" } */
+/* { dg-excess-errors "You must enable" } */
+
+#include "arm_neon.h"
+
+int
+foo ()
+{
+  return 0;
+}