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

   1 /* { dg-do run { target { powerpc64le-*-* } } } */
   2 /* { dg-options "-mdejagnu-cpu=power8 -O3" } */
   3
   4 void abort();
   5
   6 #define N 16
   7
   8 signed char ca[N] __attribute__((aligned(16)));
   9 signed char cb[] __attribute__((aligned(16)))
  10   = {8, 7, 6, 5, 4, 3, 2,  1,  0, -1, -2, -3, -4, -5, -6, -7};
  11 signed char cc[] __attribute__((aligned(16)))
  12   = {1, 1, 2, 2, 3, 3, 2,  2,  1,  1,  0,  0, -1, -1, -2, -2};
  13
  14 __attribute__((noinline)) void foo ()
  15 {
  16   int i;
  17   for (i = 0; i < N; i++) {
  18     ca[i] = cb[i] - cc[i];
  19   }
  20 }
  21
  22 int main ()
  23 {
  24   signed char cd[] = {7, 6, 4, 3, 1, 0, 0, -1, -1, -2, -2, -3, -3, -4, -4, -5};
  25   int i;
  26   foo ();
  27   for (i = 0; i < N; ++i)
  28     if (ca[i] != cd[i])
  29       abort ();
  30   return 0;
  31 }