Backporting streaming and enum changes

Jan Hubicka hubicka@ucw.cz
Fri Aug 14 09:21:20 GMT 2020


> Hi,
> > 
> > Since this was backported as r10-8623-g0d96c3424bbb5e5f994b78c8f65d8704d215be54,
> 
> Yes, after discussion with Jakub on IRC.
> > I've noticed ICEs on arm and aarch64:
> >     gcc.dg/pr34457-1.c (internal compiler error)
> >     gcc.dg/torture/pr92088-1.c   -O2 -flto -fno-use-linker-plugin
> > -flto-partition=none  (internal compiler error)
> >     gcc.dg/torture/pr92088-1.c   -O2 -flto -fuse-linker-plugin
> > -fno-fat-lto-objects  (internal compiler error)
> > 
> > I can see:
> > Excess errors:
> > during IPA pass: cp
> > lto1: internal compiler error: in operator[], at vec.h:878
> > 0xa0a5d7 vec<lto_encoder_entry, va_heap, vl_embed>::operator[](unsigned int)
> >         /gcc/vec.h:878
> > 0xa0a5d7 vec<lto_encoder_entry, va_heap, vl_ptr>::operator[](unsigned int)
> >         /gcc/vec.h:1444
> > 0xa194d3 vec<lto_encoder_entry, va_heap, vl_ptr>::operator[](unsigned int)
> >         /gcc/tree.h:3408
> > 0xa194d3 lto_symtab_encoder_deref
> >         /gcc/lto-streamer.h:1173
> > 0xa194d3 ipa_prop_read_section
> >         /gcc/ipa-prop.c:5060
> > 0xa194d3 ipa_prop_read_jump_functions()
> >         /gcc/ipa-prop.c:5089
> > 0xb6ba71 ipa_read_summaries_1
> >         /gcc/passes.c:2837
> > 0x6bc4b5 read_cgraph_and_symbols(unsigned int, char const**)
> >         /gcc/lto/lto-common.c:2921
> > 0x69deb2 lto_main()
> >         /gcc/lto/lto.c:625
> > 
> > The tests pass on trunk.
> 
> I will check this out.  I seem to remember that we fixed the issue on
> mainline. It was extra zero byte streaming, I will dig it out.
Found it,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95362
I will backport the patch shortly. Sorry for the breakage - it is quite
impressive that we do not have non-trivial SCC streamed in the distro bootstrap.

Honza
> 
> Honza
> > 
> > Christophe
> > > Thanks,
> > > Richard.
> > >
> > > > Honza
> > > >
> > >
> > > --
> > > Richard Biener <rguenther@suse.de>
> > > SUSE Software Solutions Germany GmbH, Maxfeldstrasse 5, 90409 Nuernberg,
> > > Germany; GF: Felix Imendörffer; HRB 36809 (AG Nuernberg)


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