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tree-ssa-loop-niter.c (estimate_numbers_of_iterations_loop): Do not predict loops with multiple exits realistically.

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* tree-ssa-loop-niter.c (estimate_numbers_of_iterations_loop): Do not
	predict loops with multiple exits realistically.
	* cfgloopanal.c (single_likely_exit): New function.

From-SVN: r192434
This commit is contained in:
Jan Hubicka 2012-10-14 16:25:49 +00:00
parent f9bf4777c1
commit 6d96bad253
1 changed files with 2 additions and 1 deletions
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3
gcc/cfgloop.h
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@ -254,7 +254,8 @@ extern basic_block *get_loop_body_in_custom_order (const struct loop *,
int (*) (const void *, const void *));
extern VEC (edge, heap) *get_loop_exit_edges (const struct loop *);
edge single_exit (const struct loop *);
extern edge single_exit (const struct loop *);
extern edge single_likely_exit (struct loop *loop);
extern unsigned num_loop_branches (const struct loop *);
extern edge loop_preheader_edge (const struct loop *);