From: Richard Guenther <rguenther@suse.de>
Date: Mon, 5 Jul 2010 16:06:56 +0000 (+0000)
Subject: tree-ssa-loop-ivopts.c (rewrite_use_nonlinear_expr): Copy alias info.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bdf0f819d51b7e0a5f758a721658536369b4fd7a;p=gcc.git

tree-ssa-loop-ivopts.c (rewrite_use_nonlinear_expr): Copy alias info.

2010-07-05  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-loop-ivopts.c (rewrite_use_nonlinear_expr): Copy
	alias info.

From-SVN: r161841
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f4ad9076a1b..737c89f38df 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-05  Richard Guenther  <rguenther@suse.de>
+
+	* tree-ssa-loop-ivopts.c (rewrite_use_nonlinear_expr): Copy
+	alias info.
+
 2010-07-05  Richard Guenther  <rguenther@suse.de>
 
 	* tree.c (reference_alias_ptr_type): New function.
diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c
index db56b93470b..d9362e58fb0 100644
--- a/gcc/tree-ssa-loop-ivopts.c
+++ b/gcc/tree-ssa-loop-ivopts.c
@@ -5486,8 +5486,12 @@ rewrite_use_nonlinear_expr (struct ivopts_data *data,
 	     to still.  */
 	  && (get_gimple_rhs_num_ops (TREE_CODE (comp))
 	      >= gimple_num_ops (gsi_stmt (bsi)))))
-    comp = force_gimple_operand_gsi (&bsi, comp, false, SSA_NAME_VAR (tgt),
-				     true, GSI_SAME_STMT);
+    {
+      comp = force_gimple_operand_gsi (&bsi, comp, true, NULL_TREE,
+				       true, GSI_SAME_STMT);
+      if (POINTER_TYPE_P (TREE_TYPE (tgt)))
+	duplicate_ssa_name_ptr_info (comp, SSA_NAME_PTR_INFO (tgt));
+    }
 
   if (gimple_code (use->stmt) == GIMPLE_PHI)
     {