gcc/testsuite/gcc.target/aarch64/subs3.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 --save-temps -fno-inline" } */
   3
   4 extern void abort (void);
   5 typedef long long s64;
   6
   7 int
   8 subs_ext (s64 a, int b, int c)
   9 {
  10  s64 d = a - b;
  11
  12   if (d == 0)
  13     return a + c;
  14   else
  15     return b + d + c;
  16 }
  17
  18 int
  19 subs_shift_ext (s64 a, int b, int c)
  20 {
  21  s64 d = (a - ((s64)b << 3));
  22
  23   if (d == 0)
  24     return a + c;
  25   else
  26     return b + d + c;
  27 }
  28
  29 int main ()
  30 {
  31   int x;
  32   s64 y;
  33
  34   x = subs_ext (0x13000002ll, 41, 15);
  35   if (x != 318767121)
  36     abort ();
  37
  38   x = subs_ext (0x50505050ll, 29, 4);
  39   if (x != 1347440724)
  40     abort ();
  41
  42   x = subs_ext (0x12121212121ll, 2, 14);
  43   if (x != 555819311)
  44     abort ();
  45
  46   x = subs_shift_ext (0x123456789ll, 4, 12);
  47   if (x != 591751033)
  48     abort ();
  49
  50   x = subs_shift_ext (0x02020202ll, 9, 8);
  51   if (x != 33685963)
  52     abort ();
  53
  54   x = subs_shift_ext (0x987987987987ll, 23, 41);
  55   if (x != -2020050673)
  56     abort ();
  57
  58   return 0;
  59 }
  60
  61 /* { dg-final { scan-assembler-times "subs\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+, sxtw" 2 } } */