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 64
       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))
      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      j = k;
      27  
      28      do {
      29        diff += in[j+i]*coeff[j];
      30        j+=4;
      31      } while (j < M);
      32  
      33      out[i] += diff;
      34    }
      35   }
      36  
      37  }
      38  
      39  /* Vectorized.  Changing misalignment in the inner-loop.  */
      40  __attribute__ ((noinline))
      41  void fir (){
      42    int i,j,k;
      43    float diff;
      44  
      45    for (i = 0; i < N; i++) {
      46      diff = 0;
      47      for (j = 0; j < M; j++) {
      48        diff += in[j+i]*coeff[j];
      49      }
      50      fir_out[i] = diff;
      51    }
      52  }
      53  
      54  
      55  int main (void)
      56  {
      57    check_vect ();
      58    int i, j;
      59    float diff;
      60  
      61    for (i = 0; i < M; i++)
      62      coeff[i] = i;
      63    for (i = 0; i < N+M; i++)
      64      in[i] = i;
      65  
      66    foo ();
      67    fir ();
      68  
      69    for (i = 0; i < N; i++) {
      70      if (out[i] != fir_out[i])
      71        abort ();
      72    }
      73  
      74    return 0;
      75  }
      76  
      77  /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 2 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */