[PATCH] Refine (compile-time) profitability condition

[Razya Ladelsky]

Hi,

This patch is a small refinement to the estimated_loop_iterations_int 
condition:
in the case that estimated_loop_iterations_int returns -1, we do try to 
parallelize.

num_iters.c is a representing testcase. 

Testing it now.
Ok to commit if passes successfully?

Thanks,
Razya

2009-11-19  Razya Ladelsky  <razya@il.ibm.com>

        * tree-parloops.c (parallelize_loops): Adjust 
estimated_loop_iterations_int condition.
        * testsuite/gcc.dg/autopar/num_iters.c: New testcase.


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