PR c++/17868

[pf3gnuchains/gcc-fork.git] / gcc / fold-const.c

diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 595d8c1..7de102f 100644 (file)
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -8400,11 +8400,11 @@ fold (tree expr)
          && TREE_CODE (arg1) == INTEGER_CST
          && TREE_CODE (TREE_OPERAND (arg0, 1)) == INTEGER_CST)
        {
-         tree dandnotc
-           = fold (build2 (BIT_AND_EXPR, TREE_TYPE (arg0),
-                           arg1, build1 (BIT_NOT_EXPR,
-                                         TREE_TYPE (TREE_OPERAND (arg0, 1)),
-                                         TREE_OPERAND (arg0, 1))));
+         tree notc = fold (build1 (BIT_NOT_EXPR,
+                                   TREE_TYPE (TREE_OPERAND (arg0, 1)),
+                                   TREE_OPERAND (arg0, 1)));
+         tree dandnotc = fold (build2 (BIT_AND_EXPR, TREE_TYPE (arg0),
+                                       arg1, notc));
          tree rslt = code == EQ_EXPR ? integer_zero_node : integer_one_node;
          if (integer_nonzerop (dandnotc))
            return omit_one_operand (type, rslt, arg0);
@@ -8417,10 +8417,9 @@ fold (tree expr)
          && TREE_CODE (arg1) == INTEGER_CST
          && TREE_CODE (TREE_OPERAND (arg0, 1)) == INTEGER_CST)
        {
-         tree candnotd
-           = fold (build2 (BIT_AND_EXPR, TREE_TYPE (arg0),
-                           TREE_OPERAND (arg0, 1),
-                           build1 (BIT_NOT_EXPR, TREE_TYPE (arg1), arg1)));
+         tree notd = fold (build1 (BIT_NOT_EXPR, TREE_TYPE (arg1), arg1));
+         tree candnotd = fold (build2 (BIT_AND_EXPR, TREE_TYPE (arg0),
+                                       TREE_OPERAND (arg0, 1), notd));
          tree rslt = code == EQ_EXPR ? integer_zero_node : integer_one_node;
          if (integer_nonzerop (candnotd))
            return omit_one_operand (type, rslt, arg0);