Well, mixed LTO/non-LTO is quite useful. For example, we have mixed C/assembly Application. Gold support for our target is still far away. I found -fwhole-program is very important for our size optimization.
Bingfeng > -----Original Message----- > From: Dave Korn [mailto:dave.korn.cyg...@gmail.com] > Sent: 11 June 2010 14:21 > To: Richard Guenther > Cc: Manuel López-Ibáñez; Bingfeng Mei; gcc@gcc.gnu.org; Jan Hubicka > Subject: Re: Issue with LTO/-fwhole-program > > On 11/06/2010 13:59, Richard Guenther wrote: > > > Well, we can't. We specifically support mixed LTO/non LTO objects > > (think of shared libraries for example). With the linker-plugin and > gold > > we can do better, but with just GNU ld and collect2 we can't. > > Well then shouldn't we warn if -fwhole-program is used with mixed LTO > and > non-LTO objects? Or disable it, or both? > > cheers, > DaveK
