From: Richard Guenther <rguenther@suse.de>
Date: Fri, 17 Apr 2009 19:58:16 +0000 (+0000)
Subject: tree-ssa-structalias.c (get_constraint_for_component_ref): Handle component reference... 
X-Git-Tag: releases/gcc-4.5.0~6455
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b51605c41d1170c5e52f1a0abdd1a5a1fe4db3ed;p=thirdparty%2Fgcc.git

tree-ssa-structalias.c (get_constraint_for_component_ref): Handle component references view-converting an invariant address.

2009-04-17  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-structalias.c (get_constraint_for_component_ref):
	Handle component references view-converting an invariant address.

From-SVN: r146288
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5ad860c9f75e..0a16ea8fc331 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2009-04-17  Richard Guenther  <rguenther@suse.de>
+
+	* tree-ssa-structalias.c (get_constraint_for_component_ref):
+	Handle component references view-converting an invariant address.
+
 2009-04-17  Adam Nemet  <anemet@caviumnetworks.com>
 
 	* doc/tm.texi (TARGET_DEFAULT_TARGET_FLAGS,
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c
index aed4d1a31865..b0768d0c20bf 100644
--- a/gcc/tree-ssa-structalias.c
+++ b/gcc/tree-ssa-structalias.c
@@ -3052,6 +3052,14 @@ get_constraint_for_component_ref (tree t, VEC(ce_s, heap) **results,
       else
 	result->offset = bitpos;
     }
+  else if (result->type == ADDRESSOF)
+    {
+      /* We can end up here for component references on a
+         VIEW_CONVERT_EXPR <>(&foobar).  */
+      result->type = SCALAR;
+      result->var = anything_id;
+      result->offset = 0;
+    }
   else
     gcc_unreachable ();
 }