--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-fdump-tree-gimple" } */
+int f1(int a,int b,int c,int d)
+{
+ return ((a&d)|(b&c)) ^ (b&c);
+}
+
+int f2(int a,int b,int c,int d)
+{
+ return (b&c) ^ ((a&d)|(b&c));
+}
+
+int f3(int a,int b,int c,int d)
+{
+ return ((b&c)|(a&d)) ^ (b&c);
+}
+
+int f4(int a,int b,int c,int d)
+{
+ return (b&c) ^ ((b&c)|(a&d));
+}
+
+/* There should be no ^, 4 ~ and 12 &. */
+/* { dg-final { scan-tree-dump-times "\\^" 0 "gimple"} } */
+/* { dg-final { scan-tree-dump-times "~" 4 "gimple"} } */
+/* { dg-final { scan-tree-dump-times "&" 12 "gimple"} } */
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-fdump-tree-gimple" } */
+int f1(int a,int b)
+{
+ return (a|b) ^ b;
+}
+int f2(int a,int b)
+{
+ return (b|a) ^ b;
+}
+int f3(int a,int b)
+{
+ return b^(a|b);
+}
+int f4(int a,int b)
+{
+ return b^(b|a);
+}
+/* There should be no ^, 4 ~ and 4 &. */
+/* { dg-final { scan-tree-dump-times "\\^" 0 "gimple"} } */
+/* { dg-final { scan-tree-dump-times "~" 4 "gimple"} } */
+/* { dg-final { scan-tree-dump-times "&" 4 "gimple"} } */