gcc/testsuite/gcc.dg/pr53749.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-vectorize" } */
   3
   4 #define N 1024
   5 unsigned char a[N], b[N], c[N];
   6
   7 void f1(void)
   8 {
   9   int i;
  10   for (i = 0; i < N; ++i)
  11     a[i] = b[i] * c[i];
  12 }
  13
  14 void f2(void)
  15 {
  16   int i;
  17   for (i = 0; i < N; ++i)
  18     a[i] = b[i] * 2;
  19 }
  20
  21 void f3(void)
  22 {
  23   int i;
  24   for (i = 0; i < N; ++i)
  25     a[i] = b[i] * 20;
  26 }