[ARM] Add ACLE feature macro for ARMv8.1 instructions.

	* config/arm/arm-c.c (arm_cpu_builtins): Define
	__ARM_FEATURE_QRDMX.  Clean up some trailing whitespace.

From-SVN: r231682

gcc/ChangeLog

 2015-12-16  Matthew Wahab  <matthew.wahab@arm.com>
 
+	* config/arm/arm-c.c (arm_cpu_builtins): Define
+	__ARM_FEATURE_QRDMX.  Clean up some trailing whitespace.
+
+2015-12-16  Matthew Wahab  <matthew.wahab@arm.com>
+
 	* config/arm/iterators.md (VQRDMLH_AS): New.
 	(neon_rdma_as): New.
 	* config/arm/neon.md

gcc/config/arm/arm-c.c

@@ -68,6 +68,8 @@ arm_cpu_builtins (struct cpp_reader* pfile)
 
   def_or_undef_macro (pfile, "__ARM_FEATURE_UNALIGNED", unaligned_access);
 
+  def_or_undef_macro (pfile, "__ARM_FEATURE_QRDMX", TARGET_NEON_RDMA);
+
   if (TARGET_CRC32)
     builtin_define ("__ARM_FEATURE_CRC32");