gcc/testsuite/gcc.target/powerpc/swaps-p8-6.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target p8vector_hw } */
   3 /* { dg-options "-mdejagnu-cpu=power8 -O3" } */
   4
   5 void abort();
   6
   7 #define N 16
   8
   9 signed char ca[N] __attribute__((aligned(16)));
  10 signed char cb[] __attribute__((aligned(16)))
  11   = {8, 7, 6, 5, 4, 3, 2,  1,  0, -1, -2, -3, -4, -5, -6, -7};
  12 signed char cc[] __attribute__((aligned(16)))
  13   = {1, 1, 2, 2, 3, 3, 2,  2,  1,  1,  0,  0, -1, -1, -2, -2};
  14
  15 __attribute__((noinline)) void foo ()
  16 {
  17   int i;
  18   for (i = 0; i < N; i++) {
  19     ca[i] = cb[i] - cc[i];
  20   }
  21 }
  22
  23 int main ()
  24 {
  25   signed char cd[] = {7, 6, 4, 3, 1, 0, 0, -1, -1, -2, -2, -3, -3, -4, -4, -5};
  26   int i;
  27   foo ();
  28   for (i = 0; i < N; ++i)
  29     if (ca[i] != cd[i])
  30       abort ();
  31   return 0;
  32 }