| /* { dg-do compile } */ |
| /* { dg-options "-fdump-tree-crc -O2" } */ |
| |
| typedef unsigned short ee_u16; |
| typedef unsigned char ee_u8; |
| |
| //loop iteration number is 5 |
| ee_u16 not_crcu8 (ee_u8 data, ee_u16 crc) { |
| ee_u8 i = 0, x16 = 0, carry = 0; |
| for (i = 0; i < 5; i++) { |
| x16 = (ee_u8) ((data & 1) ^ ((ee_u8) crc & 1)); |
| data >>= 1; |
| if (x16 == 1) { |
| crc ^= 0x4002; |
| carry = 1; |
| } else |
| carry = 0; |
| crc >>= 1; |
| if (carry) |
| crc |= 0x8000; |
| else |
| crc &= 0x7fff; |
| } |
| return crc; |
| } |
| /* { dg-final { scan-tree-dump-times "crcu8 function maybe contains CRC calculation" 0 "crc" } } */ |
| |
