gcc/testsuite/gcc.dg/vect/pr65494.c

   1 /* { dg-do compile } */
   2 /* { dg-additional-options "-Ofast -funroll-loops" } */
   3
   4 typedef unsigned char uchar;
   5 typedef struct rgb_ {uchar r; uchar g; uchar b;} rgb;
   6 #define N 512
   7 rgb in[N], out[N];
   8 float c[N];
   9 void foo(int n)
  10 {
  11   int i, j;
  12   for (i = 0; i < n; i++) //in and out are RGB byte arrays
  13     {
  14       float r = 0, g = 0, b = 0;
  15       for (j = 0; j < 5; j++)
  16         {
  17           r += (float)in[i + j].r * c[j];
  18           g += (float)in[i + j].g * c[j];
  19           b += (float)in[i + j].b * c[j];
  20         }
  21       out[i].r = (uchar)r;
  22       out[i].g = (uchar)g;
  23       out[i].b = (uchar)b;
  24     }
  25 }
  26
  27 /* { dg-final { scan-tree-dump "vectorized 1 loops in function" "vect" { target { vect_float && vect_intfloat_cvt } } } } */