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

   1 /* { dg-do compile { target { powerpc64le-*-* } } } */
   2 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power9" } } */
   3 /* { dg-require-effective-target powerpc_p9vector_ok } */
   4 /* { dg-options "-mcpu=power9 -O3" } */
   5 /* { dg-final { scan-assembler "lxvx" } } */
   6 /* { dg-final { scan-assembler "stxvx" } } */
   7 /* { dg-final { scan-assembler-not "lxvd2x" } } */
   8 /* { dg-final { scan-assembler-not "stxvd2x" } } */
   9 /* { dg-final { scan-assembler-not "xxpermdi" } } */
  10
  11 /* Verify P9 vector loads and stores are used rather than the
  12    load-swap/swap-store workarounds for P8.  */
  13 #define N 16
  14
  15 signed char ca[N] __attribute__((aligned(16)));
  16 signed char cb[] __attribute__((aligned(16)))
  17   = {8, 7, 6, 5, 4, 3, 2,  1,  0, -1, -2, -3, -4, -5, -6, -7};
  18 signed char cc[] __attribute__((aligned(16)))
  19   = {1, 1, 2, 2, 3, 3, 2,  2,  1,  1,  0,  0, -1, -1, -2, -2};
  20
  21 __attribute__((noinline)) void foo ()
  22 {
  23   int i;
  24   for (i = 0; i < N; i++) {
  25     ca[i] = cb[i] - cc[i];
  26   }
  27 }