[Bug rtl-optimization/55270] [4.8 Regression] ICE in get_loop_body, at cfgloop.c:823

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55270



--- Comment #12 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-01-29 
09:38:59 UTC ---

(In reply to comment #11)

> I'll test an alternative patch.



FYI, I've tried this one:

--- a/gcc/loop-init.c

+++ b/gcc/loop-init.c

@@ -57,6 +57,7 @@ loop_optimizer_init (unsigned flags)



       /* Ensure that the dominators are computed, like flow_loops_find does. 

*/

       calculate_dominance_info (CDI_DOMINATORS);

+      fix_loop_structure (NULL);



 #ifdef ENABLE_CHECKING

       verify_loop_structure ();



it cures this ICE, and was even successfully regtested.