| /* PR tree-optimization/68835 */ |
| /* { dg-do run { target int128 } } */ |
| /* { dg-options "-fno-tree-forwprop -fno-tree-ccp -O1 -fno-tree-dominator-opts -fno-tree-fre" } */ |
| |
| __attribute__((noinline, noclone)) unsigned __int128 |
| foo (void) |
| { |
| unsigned __int128 x = (unsigned __int128) 0xffffffffffffffffULL; |
| struct { unsigned __int128 a : 65; } w; |
| w.a = x; |
| w.a += x; |
| return w.a; |
| } |
| |
| int |
| main () |
| { |
| unsigned __int128 x = foo (); |
| if ((unsigned long long) x != 0xfffffffffffffffeULL |
| || (unsigned long long) (x >> 64) != 1) |
| __builtin_abort (); |
| return 0; |
| } |
