Re: pass 'lto_gimple_out' not found, how to migrate it for GCC v6.x?

[Leslie Zhai <lesliezhai at llvm dot org dot cn>]

Hi Richard,

Thanks for your kind response!


在 2017年07月28日 15:54, Richard Biener 写道:
> On Fri, Jul 28, 2017 at 6:12 AM, Leslie Zhai <lesliezhai@llvm.org.cn> wrote:
> > Hi GCC developers,
> >
> > As ChangeLog-2013 mentioned by Bernd Schmidt: ... pass_ipa_lto_gimple_out
> > ... Remove. Delete.
> >
> > there is no 'pass_ipa_lto_gimple_out' in lto-streamer-out.c any more.
> >
> > then how to migrate it for GCC v6.x? just like this:
> > https://github.com/xiangzhai/dragonegg/blob/gcc-6_3-branch/src/Backend.cpp#L2880
> > to ignore it?
> >
> > or do I need to find other equivalent PASS? please give me some hint, thanks
> > a lot!
> It says
>
> // Disable all LTO passes.
>
> (for whatever reason).  So try just removing this part - the pass is
> already removed.
Yes, I use the macro (GCC_MAJOR < 5) to disable it (just removing this 
part, to ignore it) 
https://github.com/xiangzhai/dragonegg/blob/gcc-6_3-branch/src/Backend.cpp#L2884 
sorry I am not the original developer of DragonEgg 
http://llvm.org/devmtg/2009-10/Sands_LLVMGCCPlugin.pdf and recently I am 
learning about GCC plugin and GIMPLE https://reviews.llvm.org/D35667 for 
converting GIMPLE to LLVM IR, then disable GCC PASS but use LLVM's 
instead, but I don't have the whole view of it, I need to deepin to it 
more :) please Duncan answer your question about 'for whatever reason', 
thanks!


> Richard.
>
> > PS: Thanks for David's hint, I fixed 'undefined symbol
> > gt_ggc_mx(tree2WeakVH*&)' issue, I forgot to add 'for_user' for
> > GTY((XXX))...
> >
> > --
> > Regards,
> > Leslie Zhai - a LLVM developer https://reviews.llvm.org/p/xiangzhai/

--
Regards,
Leslie Zhai - a LLVM developer https://reviews.llvm.org/p/xiangzhai/