gcc/testsuite/gcc.target/powerpc/p9-lxvx-stxvx-1.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target powerpc_vsx_ok } */
   3 /* { dg-options "-mdejagnu-cpu=power9 -mvsx -O3" } */
   4 /* { dg-final { scan-assembler "lxvx" } } */
   5 /* { dg-final { scan-assembler "stxvx" } } */
   6 /* { dg-final { scan-assembler-not "lxvd2x" } } */
   7 /* { dg-final { scan-assembler-not "stxvd2x" } } */
   8 /* { dg-final { scan-assembler-not "xxpermdi" } } */
   9
  10 /* Verify P9 vector loads and stores are used rather than the
  11    load-swap/swap-store workarounds for P8.  */
  12 #define N 16
  13
  14 signed char ca[N] __attribute__((aligned(16)));
  15 signed char cb[] __attribute__((aligned(16)))
  16   = {8, 7, 6, 5, 4, 3, 2,  1,  0, -1, -2, -3, -4, -5, -6, -7};
  17 signed char cc[] __attribute__((aligned(16)))
  18   = {1, 1, 2, 2, 3, 3, 2,  2,  1,  1,  0,  0, -1, -1, -2, -2};
  19
  20 __attribute__((noinline)) void foo ()
  21 {
  22   int i;
  23   for (i = 0; i < N; i++) {
  24     ca[i] = cb[i] - cc[i];
  25   }
  26 }