view gcc/testsuite/gcc.dg/vect/vect-strided-u8-i8-gap4.c @ 131:84e7813d76e9

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
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/* { dg-require-effective-target vect_int } */

#include <stdarg.h>
#include "tree-vect.h"

#define N 24

typedef struct {
   unsigned char a;
   unsigned char b;
   unsigned char c;
   unsigned char d;
   unsigned char e;
   unsigned char f;
   unsigned char g;
   unsigned char h;
} s;

__attribute__ ((noinline)) int
main1 (s *arr)
{
  int i;
  s *ptr = arr;
  s res[N];
  unsigned char x;

  for (i = 0; i < N; i++)
    {
      res[i].c = ptr->b + ptr->c;
      x = ptr->c + ptr->f;
      res[i].a = x + ptr->b;
      res[i].d = ptr->b + ptr->c;
      res[i].b = ptr->c;
      res[i].f = ptr->f + ptr->e;
      res[i].e = ptr->b + ptr->e; 
      res[i].h = ptr->c;   
      res[i].g = ptr->b + ptr->c;
      ptr++; 
    } 
   
  /* check results:  */
  for (i = 0; i < N; i++)
    { 
      if (res[i].c != arr[i].b + arr[i].c
          || res[i].a != arr[i].c + arr[i].f + arr[i].b
          || res[i].d != arr[i].b + arr[i].c
          || res[i].b != arr[i].c
          || res[i].f != arr[i].f + arr[i].e
          || res[i].e != arr[i].b + arr[i].e
          || res[i].h != arr[i].c
          || res[i].g != arr[i].b + arr[i].c)
          abort ();
   }

  ptr = arr;
  /* Vectorized as a strided SLP pair.  */
  for (i = 0; i < N; i++)
    { 
      res[i].a = ptr->b;
      res[i].b = ptr->c;
      ptr++; 
    }
  
  /* Check results.  */
  for (i = 0; i < N; i++)
    {
      if (res[i].a != arr[i].b 
	  || res[i].b != arr[i].c)
          abort ();
    }

}


int main (void)
{
  int i;
  s arr[N];
  
  check_vect ();

  for (i = 0; i < N; i++)
    { 
      arr[i].a = i;
      arr[i].b = i * 2;
      arr[i].c = 17;
      arr[i].d = i+34;
      arr[i].e = i * 3 + 5;
      arr[i].f = i * 5;
      arr[i].g = i - 3;
      arr[i].h = 56;
      asm volatile ("" ::: "memory");
    } 

  main1 (arr);

  return 0;
}

/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" { target vect_strided8 } } } */