From: Alan Lawrence <alan.lawrence@arm.com>
Date: Tue, 25 Mar 2014 15:59:48 +0000 (+0000)
Subject: [PATCH AArch64] Fix aarch64_simd_valid_immediate for Bigendian
X-Git-Tag: releases/gcc-4.9.0~313
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4b1e108cb2518d9a3f2e37e624ca787bb68957df;p=thirdparty%2Fgcc.git

[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
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3da0621998cd..fef65b6d9e5d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+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
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index ebd58c007611..e839539fda15 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/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;