gcc/testsuite/gcc.dg/vect/fast-math-vect-pr29925.c

   1 /* { dg-additional-options "-ffast-math" } */
   2 /* { dg-require-effective-target vect_float } */
   3
   4 #include <stdlib.h>
   5 #include "tree-vect.h"
   6
   7 __attribute__ ((noinline))
   8 void interp_pitch(float *exc, float *interp, int pitch, int len)
   9 {
  10    int i,k;
  11    int maxj;
  12
  13    maxj=3;
  14    for (i=0;i<len;i++)
  15    {
  16       float tmp = 0;
  17 #pragma GCC unroll 0
  18       for (k=0;k<7;k++)
  19       {
  20          tmp += exc[i-pitch+k+maxj-6];
  21       }
  22       interp[i] = tmp;
  23    }
  24 }
  25
  26 int main()
  27 {
  28    float *exc = calloc(126,sizeof(float));
  29    float *interp = calloc(80,sizeof(float));
  30    int pitch = -35;
  31
  32    check_vect ();
  33
  34    interp_pitch(exc, interp, pitch, 80);
  35    free(exc);
  36    free(interp);
  37    return 0;
  38 }
  39
  40 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  41