Re: F34 Change proposal: Debug Info Standardization (from DWZ to -fdebug-types-section) (System-Wide Change proposal)

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On Mon, 28 Sep 2020 17:58:58 +0200, Jakub Jelinek wrote:
> On Mon, Sep 28, 2020 at 05:46:08PM +0200, Jan Kratochvil wrote:
> > On Mon, 28 Sep 2020 17:35:26 +0200, Jakub Jelinek wrote:
> > > A way out of this could be either to use comdat .debug_info etc. sections
> > > (but that would result in quite large increase of *.o file sizes), or let
> > > the linker or a tool like DWZ discard or simplify such DIEs.
> > > I don't see how could you see at compile time that the linker will not
> > > choose the particular copy.
> > 
> > Another option is to use clang which should have such optimization implemented
> > soon:
> > 	https://whova.com/embedded/session/llvm_202010/1193947/
> 
> If you do it on the compiler side, you'll get a lot of those pesky partial
> units you so hate on the lldb side.

No. The LLVM patches from Sony are using COMDAT groups you mentioned above:
	https://youtu.be/oSCbzLC46Vg?t=312


Jan
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