gcc/testsuite/gcc.target/powerpc/swaps-p8-1.c

   1 /* { dg-do compile { target { powerpc64le-*-* } } } */
   2 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power8" } } */
   3 /* { dg-options "-mcpu=power8 -O3" } */
   4 /* { dg-final { scan-assembler "lxvd2x" } } */
   5 /* { dg-final { scan-assembler "stxvd2x" } } */
   6 /* { dg-final { scan-assembler-not "xxpermdi" } } */
   7
   8 void abort();
   9
  10 #define N 16
  11
  12 signed char ca[N] __attribute__((aligned(16)));
  13 signed char cb[] __attribute__((aligned(16)))
  14   = {8, 7, 6, 5, 4, 3, 2,  1,  0, -1, -2, -3, -4, -5, -6, -7};
  15 signed char cc[] __attribute__((aligned(16)))
  16   = {1, 1, 2, 2, 3, 3, 2,  2,  1,  1,  0,  0, -1, -1, -2, -2};
  17
  18 __attribute__((noinline)) void foo ()
  19 {
  20   int i;
  21   for (i = 0; i < N; i++) {
  22     ca[i] = cb[i] - cc[i];
  23   }
  24 }
  25
  26 int main ()
  27 {
  28   signed char cd[] = {7, 6, 4, 3, 1, 0, 0, -1, -1, -2, -2, -3, -3, -4, -4, -5};
  29   int i;
  30   foo ();
  31   for (i = 0; i < N; ++i)
  32     if (ca[i] != cd[i])
  33       abort ();
  34   return 0;
  35 }