1 /* { dg-do compile } */
2 /* { dg-options "-O -fdump-tree-ccp1" } */
3 
4 extern void link_error (void);
5 
6 /* check folding */
7 
test1(void)8 void test1 (void)
9 {
10   unsigned int l = 3 * 4 - 5 / 2;
11   if (l != 10)
12     link_error ();
13 }
14 
test11(void)15 void test11 (void)
16 {
17   unsigned int l = (((((((3 / 2 + 2) * 4) & 7) ^ 3) % 8) << 2) + 1) >> 2;
18   if (l != 7)
19     link_error ();
20 }
21 
22 /* cprop in a basic block */
test111(void)23 void test111 (void)
24 {
25   unsigned int l0 = 3 / 2 + 2;
26   unsigned int l1 = l0 * 4;
27   unsigned int l2 = 7;
28   unsigned int l3 = l1 & l2;
29   unsigned int l4 = 3;
30   unsigned int l5 = l3 ^ l4;
31   unsigned int l6 = 8;
32   unsigned int l7 = l5 % l6;
33   unsigned int l8 = 2;
34   unsigned int l9 = l7 << l8;
35   unsigned int l10 = l9 + 1;
36   unsigned int l11 = l10 >> 2;
37   if (l11 != 7)
38     link_error ();
39 }
40 
41 
42 /* cprop after an if statement */
test1111(int p)43 void test1111 (int p)
44 {
45   int l = 53;
46   if (p)
47     {
48       if ((67 + l - 25) != 95)
49         link_error ();
50     }
51   else
52     {
53       if ((93 - l +  25) != 65)
54         link_error ();
55     }
56 }
57 
58 /* cprop after a loop */
test11111(int p,int q,int r)59 void test11111 (int p, int q, int r)
60 {
61   int l = 53;
62   while (p < r)
63     {
64       if ((67 + l - 25) != 95)
65         link_error ();
66       p -= q;
67     }
68 }
69 
70 
71 
72 /* There should be not link_error calls, if there is any the
73    optimization has failed */
74 /* { dg-final { scan-tree-dump-times "link_error" 0 "ccp1"} } */
75