| /* PR rtl-optimization/91720 */ | |
| /* { dg-do run } */ | |
| /* { dg-options "-Og -fno-forward-propagate -frerun-cse-after-loop -fno-tree-fre" } */ | |
| unsigned a, b; | |
| int | |
| main () | |
| { | |
| #if __CHAR_BIT__ == 8 | |
| unsigned c = 1; | |
| unsigned long long d = 0; | |
| unsigned char e = 0; | |
| e = __builtin_sub_overflow (d, e, &a) ? 0 : 0x80; | |
| e = e << 7 | e >> c; | |
| __builtin_memmove (&d, &a, 2); | |
| b = e; | |
| if (b != 0x40) | |
| __builtin_abort (); | |
| #endif | |
| return 0; | |
| } |