aboutsummaryrefslogtreecommitdiff
path: root/gcc/testsuite/gcc.dg/tree-ssa-vect/tree-ssa-vect-10.c
blob: 7cb6240aea3fd08bbf75ec42ea1dd285201b3883 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
/* { dg-do compile { target powerpc*-*-* i?86-*-* } } */
/* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-stats -maltivec" { target powerpc*-*-* } } */
/* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-stats -msse2" { target i?86-*-* } } */

#define N 16

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

int foo ()
{
  int i;
  short b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
  short c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};


  /* Not vetorizable yet (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 0 loops" 1 "vect" } } */