gcc-4_9-branch/gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-outer-fir.c

   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 } } } } } */
  71 /* { dg-final { cleanup-tree-dump "vect" } } */