check_gcctorture_pr28634-1.c (364B)
1 /* PR rtl-optimization/28634. On targets with delayed branches, 2 dbr_schedule could do the next iteration's addition in the 3 branch delay slot, then subtract the value again if the branch 4 wasn't taken. This can lead to rounding errors. */ 5 int x = -1; 6 int y = 1; 7 int 8 main (void) 9 { 10 while (y > 0) 11 y += x; 12 if (y != x + 1) 13 abort (); 14 exit (0); 15 }