[Bug tree-optimization/50213] [4.6/4.7 Regression] Regression in space-optimized code relative to 4.5.x

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50213

--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-07 
09:31:02 UTC ---
Other simple heuristic would be to not propagate the IV increment (see what
DOM does in simple_iv_increment_p).  I'm going to test a patch like that.