On Fri, Dec 3, 2010 at 10:07 PM, H.J. Lu <hjl.to...@gmail.com> wrote: > On Fri, Dec 3, 2010 at 6:34 PM, H.J. Lu <hjl.to...@gmail.com> wrote: >> On Fri, Dec 3, 2010 at 6:23 PM, Dave Korn <dave.korn.cyg...@gmail.com> wrote: >>> On 04/12/2010 01:24, H.J. Lu wrote: >>> >>>> I checked in a patch to implement stage 2 linking. Everything >>>> seems to work, including "gcc -static ... -lm". >>> >>> Any chance you could send a complete diff? >>> >> >> I will submit a complete diff after I fix a few corner cases. >> In the meantime, you can clone my git tree and do a "git diff". >> > > Hi, > > This patch implements 2 stage BFD linker for LTO plugin. > It works with current LTO API on all cases I tested. > > Known issue: --whole-archive will call plugin on archives with IR > in stage 2 linking. But ld never calls plugin to get back object files. > I will try to avoid it in a follow up patch. >
This turns out not a problem. In stage 2 linking, for --whole-archive we call plugin to get symbols in the IR element of an archive and it will be ignored for stage 2 linking. It is OK since we already get the trans object files back for stage 2 linking. BTW, the new linker passed bootstrap-lto with all default languages. I am planning to include this patch in the next Linux binutils. -- H.J.
