From: Jan Hubicka <jh@suse.cz>
Date: Wed, 17 Jan 2007 11:16:24 +0000 (+0100)
Subject: * ipa-type-escape.c (look_for_casts): Revamp using handled_component_p.
X-Git-Tag: releases/gcc-4.3.0~7459
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dd82a6c6f6f3f8caaee608dbd385314865bd900c;p=thirdparty%2Fgcc.git

* ipa-type-escape.c (look_for_casts): Revamp using handled_component_p.

From-SVN: r120849
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d87295de3e65..4045c4b16b71 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2007-01-17  Jan Hubicka  <jh@suse.cz>
+
+	* ipa-type-escape.c (look_for_casts): Revamp using handled_component_p.
+
 2007-01-17  Eric Christopher  <echristo@apple.com>
 
 	* config.gcc: Support core2 processor.
diff --git a/gcc/ipa-type-escape.c b/gcc/ipa-type-escape.c
index 7b2fac104bc7..ccb60109ee09 100644
--- a/gcc/ipa-type-escape.c
+++ b/gcc/ipa-type-escape.c
@@ -920,26 +920,21 @@ look_for_casts (tree lhs __attribute__((unused)), tree t)
       tree castfromvar = TREE_OPERAND (t, 0);
       check_cast (TREE_TYPE (t), castfromvar);
     }
-  else if (TREE_CODE (t) == COMPONENT_REF
-	   || TREE_CODE (t) == INDIRECT_REF
-	   || TREE_CODE (t) == BIT_FIELD_REF)
-    {
-      tree base = get_base_address (t);
-      while (t != base)
-	{
-	  t = TREE_OPERAND (t, 0);
-	  if (TREE_CODE (t) == VIEW_CONVERT_EXPR)
-	    {
-	      /* This may be some part of a component ref.
-		 IE it may be a.b.VIEW_CONVERT_EXPR<weird_type>(c).d, AFAIK.
-		 castfromref will give you a.b.c, not a. */
-	      tree castfromref = TREE_OPERAND (t, 0);
-	      check_cast (TREE_TYPE (t), castfromref);
-	    }
-	  else if (TREE_CODE (t) == COMPONENT_REF)
-	    get_canon_type (TREE_TYPE (TREE_OPERAND (t, 1)), false, false);
-	}
-    } 
+  else
+    while (handled_component_p (t))
+      {
+	t = TREE_OPERAND (t, 0);
+	if (TREE_CODE (t) == VIEW_CONVERT_EXPR)
+	  {
+	    /* This may be some part of a component ref.
+	       IE it may be a.b.VIEW_CONVERT_EXPR<weird_type>(c).d, AFAIK.
+	       castfromref will give you a.b.c, not a. */
+	    tree castfromref = TREE_OPERAND (t, 0);
+	    check_cast (TREE_TYPE (t), castfromref);
+	  }
+	else if (TREE_CODE (t) == COMPONENT_REF)
+	  get_canon_type (TREE_TYPE (TREE_OPERAND (t, 1)), false, false);
+      }
 } 
 
 /* Check to see if T is a read or address of operation on a static var