From: Richard Guenther <rguenther@suse.de>
Date: Wed, 25 Aug 2010 10:03:19 +0000 (+0000)
Subject: re PR middle-end/45379 (~10% slowdown on test_fpu at revision 163278)
X-Git-Tag: releases/gcc-4.6.0~4848
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9407f6bcfba46e815e8b5b2ea9e1be9cb8c4df79;p=thirdparty%2Fgcc.git

re PR middle-end/45379 (~10% slowdown on test_fpu at revision 163278)

2010-08-25  Richard Guenther  <rguenther@suse.de>

	PR middle-end/45379
	* emit-rtl.c (set_mem_attributes_minus_bitpos): Handle
	TARGET_MEM_REF in alignment computation.

From-SVN: r163540
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 28a831a515bb..f9a60824362f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2010-08-25  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/45379
+	* emit-rtl.c (set_mem_attributes_minus_bitpos): Handle
+	TARGET_MEM_REF in alignment computation.
+
 2010-08-25  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/45059
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index 9f96abf76d26..2993c93874fc 100644
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -1615,6 +1615,11 @@ set_mem_attributes_minus_bitpos (rtx ref, tree t, int objectp,
 	align = MAX (align, TYPE_ALIGN (type));
     }
 
+  else if (TREE_CODE (t) == TARGET_MEM_REF)
+    /* ??? This isn't fully correct, we can't set the alignment from the
+       type in all cases.  */
+    align = MAX (align, TYPE_ALIGN (type));
+
   else if (TREE_CODE (t) == MISALIGNED_INDIRECT_REF)
     {
       if (integer_zerop (TREE_OPERAND (t, 1)))