gcc-4.9/gcc/testsuite/gcc.target/i386/pr39315-check.c


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/* { dg-do compile } */

typedef float __m128 __attribute__ ((__vector_size__ (16)));
__extension__ typedef __PTRDIFF_TYPE__ ptrdiff_t;

extern void foo (__m128 *);
extern void abort (void);

__m128 y = { 0.0, 1.0, 2.0, 3.0 };

void
bar (__m128 *x, int align)
{
  if ((((ptrdiff_t) x) & (align - 1)) != 0)
    abort ();
  if (__builtin_memcmp (x, &y, sizeof (y)) != 0)
    abort ();
}

int
main ()
{
  foo (&y);
  return 0;
}