diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e0c09c48221..4a61caa3e32 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2008-11-12  Jakub Jelinek  <jakub@redhat.com>
+
+	Revert:
+	2008-10-21  Jakub Jelinek  <jakub@redhat.com>
+	* gimplify.c (gimplify_expr): Drop TREE_OVERFLOW from
+	INTEGER_CSTs.
+
 2008-11-12  Jason Merrill  <jason@redhat.com>
 
 	PR c++/38007
diff --git a/gcc/gimplify.c b/gcc/gimplify.c
index bec42575b96..ecc340ab23d 100644
--- a/gcc/gimplify.c
+++ b/gcc/gimplify.c
@@ -6441,16 +6441,6 @@ gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p,
 
 	  /* Constants need not be gimplified.  */
 	case INTEGER_CST:
-	  /* Don't preserve TREE_OVERFLOW flags, it only inhibits
-	     many optimizations and FEs should have taken care of
-	     reporting all the required diagnostics.  */
-	  if (TREE_OVERFLOW (*expr_p))
-	    *expr_p = build_int_cst_wide (TREE_TYPE (*expr_p),
-					  TREE_INT_CST_LOW (*expr_p),
-					  TREE_INT_CST_HIGH (*expr_p));
-	  ret = GS_ALL_DONE;
-	  break;
-
 	case REAL_CST:
 	case FIXED_CST:
 	case STRING_CST: