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  /* Should be vectorized. Fixed misaligment in the inner-loop.  */
      14  __attribute__ ((noinline))
      15  void foo (){
      16   int i,j,k;
      17   float diff;
      18  
      19   for (i = 0; i < N; i++) {
      20    out[i] = 0;
      21   }
      22  
      23   for (k = 0; k < 4; k++) {
      24    for (i = 0; i < N; i++) {
      25      diff = 0;
      26      for (j = k; j < M; j+=4) {
      27        diff += in[j+i]*coeff[j]; 
      28      }
      29      out[i] += diff;
      30    }
      31   }
      32  
      33  }
      34  
      35  /* Vectorized. Changing misalignment in the inner-loop.  */
      36  __attribute__ ((noinline))
      37  void fir (){
      38    int i,j,k;
      39    float diff;
      40  
      41    for (i = 0; i < N; i++) {
      42      diff = 0;
      43      for (j = 0; j < M; j++) {
      44        diff += in[j+i]*coeff[j];
      45      }
      46      fir_out[i] = diff;
      47    }
      48  }
      49  
      50  
      51  int main (void)
      52  {
      53    check_vect ();
      54    int i, j;
      55    float diff;
      56  
      57    for (i = 0; i < M; i++)
      58      coeff[i] = i;
      59    for (i = 0; i < N+M; i++)
      60      in[i] = i;
      61  
      62    foo ();
      63    fir ();
      64    
      65    for (i = 0; i < N; i++) {
      66      if (out[i] != fir_out[i])
      67        abort ();
      68    }
      69  
      70    return 0;
      71  }
      72  
      73  /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 2 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */