1  /* { dg-require-effective-target vect_float } */
       2  
       3  #include <stdarg.h>
       4  #include "../../tree-vect.h"
       5  
       6  #define N 40
       7  #define M 128
       8  float in[N+M];
       9  float coeff[M];
      10  float out[N];
      11  float fir_out[N];
      12  
      13  /* Vectorized. Fixed misaligment in the inner-loop.  */
      14  __attribute__ ((noinline)) void foo (){
      15   int i,j,k;
      16   float diff;
      17  
      18   for (i = 0; i < N; i++) {
      19    out[i] = 0;
      20   }
      21  
      22   for (k = 0; k < 4; k++) {
      23    for (i = 0; i < N; i++) {
      24      diff = 0;
      25      for (j = k; j < M; j+=4) {
      26        diff += in[j+i]*coeff[j];
      27      }
      28      out[i] += diff;
      29    }
      30   }
      31  }
      32  
      33  /* Vectorized. Changing misalignment in the inner-loop.  */
      34  __attribute__ ((noinline)) void fir (){
      35    int i,j,k;
      36    float diff;
      37  
      38    for (i = 0; i < N; i++) {
      39      diff = 0;
      40      for (j = 0; j < M; j++) {
      41        diff += in[j+i]*coeff[j];
      42      }
      43      fir_out[i] = diff;
      44    }
      45  }
      46  
      47  
      48  int main (void)
      49  {
      50    check_vect ();
      51    int i, j;
      52    float diff;
      53  
      54    for (i = 0; i < M; i++)
      55      coeff[i] = i;
      56    for (i = 0; i < N+M; i++)
      57      in[i] = i;
      58  
      59    foo ();
      60    fir ();
      61  
      62    for (i = 0; i < N; i++) {
      63      if (out[i] != fir_out[i])
      64        abort ();
      65    }
      66  
      67    return 0;
      68  }
      69  
      70  /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 2 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */