Building Firefox with -o2 optimization

dsimcha · Post by **dsimcha** » March 13th, 2004, 8:56 am

It seems, since many unofficial builders have been building with -o2 optimizations lately, that the bugs relating to this have been fixed. Will the official builds soon be built with -o2 optimizations or are there still issues with o2? If so, what exactly are those issues?

MozJF · Post by **MozJF** » March 13th, 2004, 10:16 am

There is still a lot of bugs with -o2 optimisations.

MS VC++ 6.0 is the "official" compiler for win32 (not VC .Net), and -O2 optimization is kinda busted ; just look at this bug for example :

http://bugzilla.mozilla.org/show_bug.cgi?id=190043 and of course this othe r bug: http://bugzilla.mozilla.org/show_bug.cgi?id=136999

mmoy · Post by **mmoy** » March 13th, 2004, 8:52 pm

We found a new one yesterday and figured out the code checkin that caused it this evening (we think). So I wouldn't exactly say we've conquered the O2 bugs yet.

MozJF · Post by **MozJF** » March 13th, 2004, 11:38 pm

Oh ? So, soon, -O2 for MSVC++ 6.0 builds ? Wow ;o)

mmoy · Post by **mmoy** » March 13th, 2004, 11:46 pm

Well, it turned out to be a generic bug. I reproduced the crash with the official from 3/10. Mook is debugging the thing at the moment in the crc32 thread. Looks like some bad code checked in on 3/7.

MozJF · Post by **MozJF** » March 14th, 2004, 1:46 am

Well, it looks like -O2 will not be on for MSVC++ 6.0 (don't have money to buy VC .net) before a long time ;o)