Re: [GSoC] generation of Gimple code from isl_ast_node_if

[Tobias Grosser]

On 24/07/2014 12:09, Roman Gareev wrote:
I've attached the patch, which contains generation of Gimple code from
isl_ast_node_if.
However, I've found out a problem. When I'm trying to generate Gimple
code from, for example, the following ISL AST:

{
   for (int c1 = 0; c1 <= 49; c1 += 1) {
     S_6(c1);
     if (c1 <= 48) {
       S_3(c1);
       if (c1 >= 24)
         S_4(c1);
       S_5(c1);
     }
   }
   S_7();
}

the pointer to Gimple basic block of S_3's poly basic block is NULL.

Could you please advise me possible reasons of this issue?

The source code of the example:

int
foo ()
{
   int i, res = 0;

   for (i = 0; i < 50; i++)
     {
       if (i >= 25)
         res += i;
     }

   return res;
}

extern void abort ();

int
main (void)
{
   int res = foo ();

   if (res != 1225)
     abort ();

   return 0;
}

This patch looks also good. Can you quickly repost with the two test 
cases as well as the appropriate ChangeLog, before I give the final OK.

Cheers,
Tobias