http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60172
--- Comment #10 from Joey Ye <joey.ye at arm dot com> --- (In reply to rguent...@suse.de from comment #9) > On Mon, 17 Feb 2014, joey.ye at arm dot com wrote: > > > But that doesn't make sense - it means that -fdisable-tree-forwprop4 > should get numbers back to good speed, no? Because that's the > only change forwprop4 does. -fdisable-tree-forwprop4 dooms other transformation and results slightly worse code than before. So the number isn't back to the best. I think forwprop4 does some good stuff here and disabling it isn't the solution. > > For completeness please base checks on r207316 (it contains a fix > for the blamed revision, but as far as I can see it shouldn't make > a difference for the testcase). I'm playing with r207686 and it is the same for this case. > > Did you check whether my hackish patch fixes things? I did with trunk 20140208. But it didn't make any difference to Proc_8
