| /* { dg-do compile } */ |
| /* { dg-options "-Ofast -fdump-tree-vrp1-details" } */ |
| |
| typedef unsigned short u16; |
| typedef unsigned char u8; |
| typedef unsigned int u32; |
| #define NNN 10 |
| |
| u32 f[NNN], t[NNN]; |
| |
| static u16 |
| Calc_crc8 (u8 data, u16 crc) |
| { |
| u8 i=0,x16=0,carry=0; |
| for (i = 0; i < 8; i++) |
| { |
| x16 = (u8)((data & 1) ^ ((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; |
| } |
| |
| int |
| main (int argc, char argv[]) |
| { |
| int i, j; u16 crc; |
| for (j = 0; j < 10000000; j++) |
| { |
| for (i = 0; i < NNN; i++) |
| { |
| f[i] = random(i); |
| t[i] = random(NNN - i - 1); |
| } |
| for (i=0; i<NNN; i++) |
| { |
| crc=Calc_crc8(f[i],(u16)argc); |
| crc=Calc_crc8(t[i],crc); |
| } |
| } |
| return crc; |
| } |
| |
| /* { dg-final { scan-tree-dump "Cancelling" "vrp1" } } */ |
| /* { dg-final { cleanup-tree-dump "vrp1" } } */ |
| |
