gcc/testsuite/gcc.c-torture/execute/simd-5.c

   1 /* Test saving and restoring of SIMD registers.  */
   2
   3 typedef short Q __attribute__((vector_size(8)));
   4
   5 Q q1 = {1, 2}, q2 = {3, 4}, q3 = {5, 6}, q4 = {7, 8};
   6
   7 Q w1, w2, w3, w4;
   8 Q z1, z2, z3, z4;
   9
  10 volatile int dummy;
  11
  12 void  __attribute__((__noinline__))
  13 func0 (void)
  14 {
  15   dummy = 1;
  16 }
  17
  18 void __attribute__((__noinline__))
  19 func1 (void)
  20 {
  21   Q a, b;
  22   a = q1 * q2;
  23   b = q3 * q4;
  24   w1 = a;
  25   w2 = b;
  26   func0 ();
  27   w3 = a;
  28   w4 = b;
  29 }
  30
  31 void __attribute__((__noinline__))
  32 func2 (void)
  33 {
  34   Q a, b;
  35   a = q1 + q2;
  36   b = q3 - q4;
  37   z1 = a;
  38   z2 = b;
  39   func1 ();
  40   z3 = a;
  41   z4 = b;
  42 }
  43
  44 int
  45 main (void)
  46 {
  47   func2 ();
  48
  49   if (memcmp (&w1, &w3, sizeof (Q)) != 0)
  50     abort ();
  51   if (memcmp (&w2, &w4, sizeof (Q)) != 0)
  52     abort ();
  53   if (memcmp (&z1, &z3, sizeof (Q)) != 0)
  54     abort ();
  55   if (memcmp (&z2, &z4, sizeof (Q)) != 0)
  56     abort ();
  57
  58   return 0;
  59 }