[Bug middle-end/39326] Segmentation fault with -O1, out of memory with -O2

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39326



--- Comment #48 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-15 
16:06:33 UTC ---

Removing all the caching (dep/indep_loop and dep/indep_ref) makes things

faster ... (they have a hit rate of 5% resp. 6.2% only)



Fastest timing sofar:



 tree loop invariant motion:  57.42 (26%) usr



that's without any limiting and with just the dep/indep_ref cache removed

and a (working) patch according to comment #47.