tree.c (build_constructor): Compute TREE_CONSTANT for the resultant constructor.

	* tree.c (build_constructor): Compute TREE_CONSTANT for the
	resultant constructor.
	(build_constructor_single): Don't set TREE_CONSTANT.
	(build_constructor_from_list): Don't compute TREE_CONSTANT.

From-SVN: r159325

gcc/ChangeLog

+2010-05-12  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* tree.c (build_constructor): Compute TREE_CONSTANT for the
+	resultant constructor.
+	(build_constructor_single): Don't set TREE_CONSTANT.
+	(build_constructor_from_list): Don't compute TREE_CONSTANT.
+
 2010-05-12  Jan Hubicka  <jh@suse.cz>
 
 	* cgraph.h (struct varpool_node): Add aux.

gcc/tree.c

@@ -1332,8 +1332,22 @@ tree
 build_constructor (tree type, VEC(constructor_elt,gc) *vals)
 {
   tree c = make_node (CONSTRUCTOR);
+  unsigned int i;
+  constructor_elt *elt;
+  bool constant_p = true;
+
   TREE_TYPE (c) = type;
   CONSTRUCTOR_ELTS (c) = vals;
+
+  for (i = 0; VEC_iterate (constructor_elt, vals, i, elt); i++)
+    if (!TREE_CONSTANT (elt->value))
+      {
+	constant_p = false;
+	break;
+      }
+
+  TREE_CONSTANT (c) = constant_p;
+
   return c;
 }
 
@@ -1344,16 +1358,13 @@ build_constructor_single (tree type, tree index, tree value)
 {
   VEC(constructor_elt,gc) *v;
   constructor_elt *elt;
-  tree t;
 
   v = VEC_alloc (constructor_elt, gc, 1);
   elt = VEC_quick_push (constructor_elt, v, NULL);
   elt->index = index;
   elt->value = value;
 
-  t = build_constructor (type, v);
-  TREE_CONSTANT (t) = TREE_CONSTANT (value);
-  return t;
+  return build_constructor (type, v);
 }
 
 
@@ -1362,27 +1373,17 @@ build_constructor_single (tree type, tree index, tree value)
 tree
 build_constructor_from_list (tree type, tree vals)
 {
-  tree t, val;
+  tree t;
   VEC(constructor_elt,gc) *v = NULL;
-  bool constant_p = true;
 
   if (vals)
     {
       v = VEC_alloc (constructor_elt, gc, list_length (vals));
       for (t = vals; t; t = TREE_CHAIN (t))
-	{
-	  constructor_elt *elt = VEC_quick_push (constructor_elt, v, NULL);
-	  val = TREE_VALUE (t);
-	  elt->index = TREE_PURPOSE (t);
-	  elt->value = val;
-	  if (!TREE_CONSTANT (val))
-	    constant_p = false;
-	}
+	CONSTRUCTOR_APPEND_ELT (v, TREE_PURPOSE (t), TREE_VALUE (t));
     }
 
-  t = build_constructor (type, v);
-  TREE_CONSTANT (t) = constant_p;
-  return t;
+  return build_constructor (type, v);
 }
 
 /* Return a new FIXED_CST node whose type is TYPE and value is F.  */