gcc/testsuite/gcc.target/powerpc/swaps-p8-4.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 4096
  11 int ca[N] __attribute__((aligned(16)));
  12 int cb[N] __attribute__((aligned(16)));
  13 int cc[N] __attribute__((aligned(16)));
  14 int cd[N] __attribute__((aligned(16)));
  15
  16 __attribute__((noinline)) void foo ()
  17 {
  18   int i;
  19   for (i = 0; i < N; i++) {
  20     ca[i] = (cb[i] + cc[i]) * cd[i];
  21   }
  22 }
  23
  24 __attribute__((noinline)) void init ()
  25 {
  26   int i;
  27   for (i = 0; i < N; ++i) {
  28     cb[i] = 3 * i - 2048;
  29     cc[i] = -5 * i + 93;
  30     cd[i] = i % 2 ? 1 : -1;
  31   }
  32 }
  33
  34 int main ()
  35 {
  36   int i;
  37   init ();
  38   foo ();
  39   for (i = 0; i < N; ++i)
  40     if (i % 2 == 1 && ca[i] != -2 * i - 1955)
  41       abort ();
  42     else if (i % 2 == 0 && ca[i] != 1955 + 2 * i)
  43       abort ();
  44   return 0;
  45 }