view gcc/testsuite/gcc.dg/vect/vect-10-big-array.c @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 84e7813d76e9
children
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/* { dg-do compile } */
/* { dg-require-effective-target vect_int } */

extern void abort (void);

#define N 128

short a[N];
short d[N];

int foo ()
{
  int i;
  short b[N];
  short c[N];
  for (i = 0; i < N/2; i++)
    {
      b[i] = i*3;
      c[i] = i;
      asm volatile ("" ::: "memory");
    }

  /* Strided access pattern.  */
  for (i = 0; i < N/2; i++)
    {
      a[i] = b[2*i+1] * c[2*i+1] - b[2*i] * c[2*i];
      d[i] = b[2*i] * c[2*i+1] + b[2*i+1] * c[2*i];
    }

  return 0;
}

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail { ! vect_strided2 } } } } */