gcc/testsuite/gcc.target/powerpc/ppc-target-4.c

/* { dg-do compile { target { powerpc*-*-* } } } */
/* { dg-skip-if "" { powerpc*-*-darwin* } } */
/* { dg-require-effective-target powerpc_vsx_ok } */
/* { dg-options "-O2 -ffast-math -mdejagnu-cpu=power5 -mno-altivec -mabi=altivec -fno-unroll-loops" } */
/* { dg-final { scan-assembler-times "vaddfp" 1 } } */
/* { dg-final { scan-assembler-times "xvaddsp" 1 } } */
/* { dg-final { scan-assembler-times "fadds" 1 } } */

#ifndef SIZE
#define SIZE 1024
#endif

#ifdef __ALTIVEC__
#error "__ALTIVEC__ should not be defined."
#endif

#ifdef __VSX__
#error "__VSX__ should not be defined."
#endif

#pragma GCC target("vsx")
#include <altivec.h>
#pragma GCC reset_options

#pragma GCC push_options
#pragma GCC target("altivec,no-vsx")

#ifndef __ALTIVEC__
#error "__ALTIVEC__ should be defined."
#endif

#ifdef __VSX__
#error "__VSX__ should not be defined."
#endif

void
av_add (vector float *a, vector float *b, vector float *c)
{
  unsigned long i;
  unsigned long n = SIZE / 4;

  for (i = 0; i < n; i++)
    a[i] = vec_add (b[i], c[i]);
}

#pragma GCC target("vsx")

#ifndef __ALTIVEC__
#error "__ALTIVEC__ should be defined."
#endif

#ifndef __VSX__
#error "__VSX__ should be defined."
#endif

void
vsx_add (vector float *a, vector float *b, vector float *c)
{
  unsigned long i;
  unsigned long n = SIZE / 4;

  for (i = 0; i < n; i++)
    a[i] = vec_add (b[i], c[i]);
}

#pragma GCC pop_options
#pragma GCC target("no-vsx,no-altivec")

#ifdef __ALTIVEC__
#error "__ALTIVEC__ should not be defined."
#endif

#ifdef __VSX__
#error "__VSX__ should not be defined."
#endif

void
norm_add (float *a, float *b, float *c)
{
  unsigned long i;

  for (i = 0; i < SIZE; i++)
    a[i] = b[i] + c[i];
}