[PATCH AArch64] Fix aarch64_simd_valid_immediate for Bigendian

gcc/

	* config/aarch64/aarch64.c (aarch64_simd_valid_immediate): Reverse
	order of elements for big-endian.

From-SVN: r208814

gcc/ChangeLog

+2014-03-25  Alan Lawrence  <alan.lawrence@arm.com>
+
+	* config/aarch64/aarch64.c (aarch64_simd_valid_immediate): Reverse
+	order of elements for big-endian.
+
 2014-03-25  Richard Biener  <rguenther@suse.de>
 
 	PR middle-end/60635

gcc/config/aarch64/aarch64.c

@@ -6566,7 +6566,9 @@ aarch64_simd_valid_immediate (rtx op, enum machine_mode mode, bool inverse,
   /* Splat vector constant out into a byte vector.  */
   for (i = 0; i < n_elts; i++)
     {
-      rtx el = CONST_VECTOR_ELT (op, i);
+      /* The vector is provided in gcc endian-neutral fashion.  For aarch64_be,
+         it must be laid out in the vector register in reverse order.  */
+      rtx el = CONST_VECTOR_ELT (op, BYTES_BIG_ENDIAN ? (n_elts - 1 - i) : i);
       unsigned HOST_WIDE_INT elpart;
       unsigned int part, parts;