gcc/testsuite/gcc.dg/pr39455.c

   1 /* PR tree-optimization/39455 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fprefetch-loop-arrays -w" } */
   4 /* { dg-additional-options "-march=i686 -msse" { target { { i?86-*-* x86_64-*-* } && ia32 } } } */
   5
   6 void
   7 foo (char *x, unsigned long y, unsigned char *z)
   8 {
   9   unsigned int c[256], *d;
  10
  11   for (d = c + 1; d < c + 256; ++d)
  12     *d += d[-1];
  13   x[--c[z[y]]] = 0;
  14 }