1  /* PR debug/49580 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -ftree-parallelize-loops=4 -fdump-tree-parloops2-details" } */
       4  
       5  #include <stdarg.h>
       6  #include <stdlib.h>
       7  
       8  #define N 1600
       9  
      10  unsigned int ub[N];
      11  unsigned char reg_has_output_reload[N];
      12  unsigned int uc[N];
      13  
      14   __attribute__ ((noinline)) 
      15   void main2 (unsigned int regno, unsigned int n_reloads)
      16   {
      17    unsigned int nr=0; 
      18  
      19    if (regno> ub[regno])
      20      nr=regno;
      21    else
      22      nr=ub[nr];
      23  
      24    while (nr-- > 0)
      25      if (n_reloads == 0 || reg_has_output_reload[regno + nr] == 0)
      26        ub[regno + nr] = 0;
      27  }
      28  
      29  int main (void)
      30  { 
      31    main2 (799, 0);
      32    return 0;
      33  }
      34  
      35  
      36  /* { dg-final { scan-tree-dump-times "SUCCESS: may be parallelized" 1 "parloops2" } } */
      37