http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58957
--- Comment #3 from Zhendong Su <su at cs dot ucdavis.edu> --- (In reply to Richard Biener from comment #2) > I think it's just awfully slow (deep loop nest, possible to unroll > completely). > It terminates for me on the branch and for 4.8.2 and 4.8.1. > > tree CFG cleanup : 8.49 (88%) usr 0.00 ( 0%) sys 8.52 (87%) > wall 783 kB ( 2%) ggc > TOTAL : 9.70 0.06 9.80 > 51528 kB > > on trunk and 4.7.3: > > TOTAL : 0.09 0.00 0.10 > 1865 kB You are right Richard --- I didn't wait long enough.