diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4b37e02db01..97748bdf551 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-10-23  Caroline Tice  <cmtice@google.com>
+
+	(from Richard Biener
+	* tree.c (int_cst_hasher::hash):  Replace XOR with more efficient
+	call to iterative_hash_host_wide_int.
+
 2015-10-23  David Edelsohn  <dje.gcc@gmail.com>
 
 	* config.gcc (powerpc-ibm-aix[6789]) [default_use_cxa_atexit]:
diff --git a/gcc/tree.c b/gcc/tree.c
index 79bbd0752c8..e77d4b88ab5 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -1364,7 +1364,7 @@ int_cst_hasher::hash (tree x)
   int i;
 
   for (i = 0; i < TREE_INT_CST_NUNITS (t); i++)
-    code ^= TREE_INT_CST_ELT (t, i);
+    code = iterative_hash_host_wide_int (TREE_INT_CST_ELT(t, i), code);
 
   return code;
 }