------- Comment #36 from zadeck at naturalbridge dot com 2007-12-17 16:33 ------- Subject: Re: [4.3 regression] bad interaction between DF and SJLJ exceptions
ludovic at ludovic-brenta dot org wrote: > ------- Comment #35 from ludovic at ludovic-brenta dot org 2007-12-17 16:16 > ------- > Created an attachment (id=14784) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14784&action=view) > --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14784&action=view) > Results of gnat1 -ftime-report [...] g-catiio.adb with SJLJ exceptions > > $ time ../../gnat1 -ftime-report -dumpbase g-catiio.adb -O2 -W -Wall -g > -gnatpg > -mtune=generic -gnatO g-catiio.o g-catiio.adb > /tmp/pr34400-time-report.txt > 2>&1 > > real 0m54.039s > user 0m53.647s > sys 0m0.332s > > With df_hack2, df_hack3 and df_double_queue_worklist applied. > > > I am looking at this time report and i do not see anything thing that looks like df is taking an inordinate amount of time. i could be missing something. but it looks like there are a lot of passes that are eating big chunks of time here. At this point halving the amount of time that df takes is going to give you a few percent. Kenny -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34400
