| /* { dg-do compile } */ |
| /* { dg-options "-O -fdump-tree-ccp1" } */ |
| |
| extern void link_error (void); |
| |
| /* check folding */ |
| |
| void test1 (void) |
| { |
| unsigned int l = 3 * 4 - 5 / 2; |
| if (l != 10) |
| link_error (); |
| } |
| |
| void test11 (void) |
| { |
| unsigned int l = (((((((3 / 2 + 2) * 4) & 7) ^ 3) % 8) << 2) + 1) >> 2; |
| if (l != 7) |
| link_error (); |
| } |
| |
| /* cprop in a basic block */ |
| void test111 (void) |
| { |
| unsigned int l0 = 3 / 2 + 2; |
| unsigned int l1 = l0 * 4; |
| unsigned int l2 = 7; |
| unsigned int l3 = l1 & l2; |
| unsigned int l4 = 3; |
| unsigned int l5 = l3 ^ l4; |
| unsigned int l6 = 8; |
| unsigned int l7 = l5 % l6; |
| unsigned int l8 = 2; |
| unsigned int l9 = l7 << l8; |
| unsigned int l10 = l9 + 1; |
| unsigned int l11 = l10 >> 2; |
| if (l11 != 7) |
| link_error (); |
| } |
| |
| |
| /* cprop after an if statement */ |
| void test1111 (int p) |
| { |
| int l = 53; |
| if (p) |
| { |
| if ((67 + l - 25) != 95) |
| link_error (); |
| } |
| else |
| { |
| if ((93 - l + 25) != 65) |
| link_error (); |
| } |
| } |
| |
| /* cprop after a loop */ |
| void test11111 (int p, int q, int r) |
| { |
| int l = 53; |
| while (p < r) |
| { |
| if ((67 + l - 25) != 95) |
| link_error (); |
| p -= q; |
| } |
| } |
| |
| |
| |
| /* There should be not link_error calls, if there is any the |
| optimization has failed */ |
| /* { dg-final { scan-tree-dump-times "link_error" 0 "ccp1"} } */ |
