gcc/testsuite/gcc.dg/vect/pr112774.c

   1 /* PR tree-optimization/112774 */
   2 /* { dg-do compile } */
   3 /* { dg-require-effective-target vect_int } */
   4 /* { dg-additional-options "-O2 -ftree-vectorize" } */
   5
   6 int A[1024 * 2];
   7
   8 int foo (unsigned offset, unsigned N)
   9 {
  10   int sum = 0;
  11
  12   for (unsigned i = 0; i < N; i++)
  13     sum += A[i + offset];
  14
  15   return sum;
  16 }
  17
  18 /* Loop can be vectorized by referring "i + offset" is nonwrapping from array.  */
  19 /* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" { target { ! { avr-*-* msp430-*-* pru-*-* } } } } } */