[Bug middle-end/99097] New: profiledbootstrap fails with LTO and disabled plugin

[Bug middle-end/99097] New: profiledbootstrap fails with LTO and disabled plugin

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097

            Bug ID: 99097
           Summary: profiledbootstrap fails with LTO and disabled plugin
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hubicka at gcc dot gnu.org
  Target Milestone: ---

Configuring with 
../configure --disable-multilib --prefix=/home/jan/trunk-install
--with-build-config=bootstrap-lto --enable-checking=release --disable-plugin

I get on x86-64:

cc1: internal compiler error: Segmentation fault
0xe3ae79 crash_signal
        ../../gcc/toplev.c:327
0x149fcc7 ix86_option_override_internal
        ../../gcc/config/i386/i386-options.c:2045
0x14a3c2f ix86_option_override()
        ../../gcc/config/i386/i386-options.c:3046
0xe41831 process_options
        ../../gcc/toplev.c:1247
0x47f3d4 do_compile
        ../../gcc/toplev.c:2119

[Bug middle-end/99097] profiledbootstrap fails with LTO and disabled plugin

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097

--- Comment #1 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Also linker used is gold which may be a problem since:

So the problem ssems to be wrong call to strcmp:

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7886372 in __strcmp_avx2 () from /lib64/libc.so.6
(gdb) bt
#0  0x00007ffff7886372 in __strcmp_avx2 () from /lib64/libc.so.6
#1  0x000000000149fcc8 in ix86_option_override_internal (main_args_p=<optimized
out>, opts=0x3396c60 <global_options>, opts_set=0x33d4fe0 <global_options_set>)
    at ../../gcc/config/i386/i386-options.c:2045
#2  0x00000000014a3c30 in ix86_option_override () at
../../gcc/config/i386/i386-options.c:3046
#3  0x0000000000e41832 in process_options () at ../../gcc/toplev.c:1247
#4  0x000000000047f3d5 in do_compile () at ../../gcc/toplev.c:2119
#5  toplev::main (this=0x7fffffffe0de, argc=<optimized out>, argv=<optimized
out>) at ../../gcc/toplev.c:2336
#6  0x0000000000486caf in main (argc=1, argv=0x7fffffffe1e8) at
../../gcc/main.c:39
(gdb) up
#1  0x000000000149fcc8 in ix86_option_override_internal (main_args_p=<optimized
out>, opts=0x3396c60 <global_options>, opts_set=0x33d4fe0 <global_options_set>)
    at ../../gcc/config/i386/i386-options.c:2045
2045        if (! strcmp (opts->x_ix86_arch_string,
processor_alias_table[i].name))
(gdb) p opts->x_ix86_arch_string
$1 = 0x23896fb "x86-64"
(gdb) p processor_alias_table[i].name
$2 = 0x0
(gdb) p i
$3 = 0

processor alias table is const so i do not see how that can happen legally...

[Bug middle-end/99097] profiledbootstrap fails with LTO and disabled plugin

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
                 CC|                            |marxin at gcc dot gnu.org
   Last reconfirmed|                            |2021-02-15
     Ever confirmed|0                           |1

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I've just tried to reproduce it:
../configure --with-build-config=bootstrap-lto --enable-checking=release
--disable-plugin

But the build is fine for me.

Re: [Bug middle-end/99097] profiledbootstrap fails with LTO and disabled plugin

[Jan Hubicka]

> I've just tried to reproduce it:
> ../configure --with-build-config=bootstrap-lto --enable-checking=release
> --disable-plugin
> 
> But the build is fine for me.
On our dhcp230 (zen III machine) it works if you make system linker ld,
if system linker is gold (from tumbleweed) it fails

GNU gold (GNU Binutils 2.36.50.20210211) 1.16
Copyright (C) 2021 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.

I will rebuild and produce resolution files, looks like linker bug to
me.

Honza

[Bug middle-end/99097] profiledbootstrap fails with LTO and disabled plugin

[hubicka at ucw dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097

--- Comment #3 from Jan Hubicka <hubicka at ucw dot cz> ---
> I've just tried to reproduce it:
> ../configure --with-build-config=bootstrap-lto --enable-checking=release
> --disable-plugin
> 
> But the build is fine for me.
On our dhcp230 (zen III machine) it works if you make system linker ld,
if system linker is gold (from tumbleweed) it fails

GNU gold (GNU Binutils 2.36.50.20210211) 1.16
Copyright (C) 2021 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.

I will rebuild and produce resolution files, looks like linker bug to
me.

Honza

[Bug middle-end/99097] profiledbootstrap fails with LTO and disabled plugin

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Works on the branch.

[Bug middle-end/99097] profiledbootstrap fails with LTO and disabled plugin

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097

--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #3)
> > I've just tried to reproduce it:
> > ../configure --with-build-config=bootstrap-lto --enable-checking=release
> > --disable-plugin
> > 
> > But the build is fine for me.

Ah, my bad, I used BFD.

> On our dhcp230 (zen III machine) it works if you make system linker ld,
> if system linker is gold (from tumbleweed) it fails
> 
> GNU gold (GNU Binutils 2.36.50.20210211) 1.16

Note that this isn't ld.gold from openSUSE Tumbleweed. We still have 2.35.1
release in the distribution. This must be a built gold from source files?

Re: [Bug middle-end/99097] profiledbootstrap fails with LTO and disabled plugin

[Jan Hubicka]

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097
> 
> --- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
> (In reply to Jan Hubicka from comment #3)
> > > I've just tried to reproduce it:
> > > ../configure --with-build-config=bootstrap-lto --enable-checking=release
> > > --disable-plugin
> > > 
> > > But the build is fine for me.
> 
> Ah, my bad, I used BFD.
> 
> > On our dhcp230 (zen III machine) it works if you make system linker ld,
> > if system linker is gold (from tumbleweed) it fails
> > 
> > GNU gold (GNU Binutils 2.36.50.20210211) 1.16
> 
> Note that this isn't ld.gold from openSUSE Tumbleweed. We still have 2.35.1
> release in the distribution. This must be a built gold from source files?

Ah, you are right. It is binutils trunk (unpatched).   Will figure out
what is going on here.

Honza

[Bug middle-end/99097] profiledbootstrap fails with LTO and disabled plugin

[hubicka at ucw dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097

--- Comment #6 from Jan Hubicka <hubicka at ucw dot cz> ---
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097
> 
> --- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
> (In reply to Jan Hubicka from comment #3)
> > > I've just tried to reproduce it:
> > > ../configure --with-build-config=bootstrap-lto --enable-checking=release
> > > --disable-plugin
> > > 
> > > But the build is fine for me.
> 
> Ah, my bad, I used BFD.
> 
> > On our dhcp230 (zen III machine) it works if you make system linker ld,
> > if system linker is gold (from tumbleweed) it fails
> > 
> > GNU gold (GNU Binutils 2.36.50.20210211) 1.16
> 
> Note that this isn't ld.gold from openSUSE Tumbleweed. We still have 2.35.1
> release in the distribution. This must be a built gold from source files?

Ah, you are right. It is binutils trunk (unpatched).   Will figure out
what is going on here.

Honza

[Bug middle-end/99097] profiledbootstrap fails with LTO and disabled plugin

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097

--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
> Ah, you are right. It is binutils trunk (unpatched).   Will figure out
> what is going on here.

Good! If the failure happens quickly, you can likely bisect binutils quickly.
In which build stage do you see the failure?

[Bug middle-end/99097] profiledbootstrap fails with LTO and disabled plugin

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99097

--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
I really cannot reproduce it with a custom ld.gold build.