[Bug lto/64636] New: Bootstrapping gcc-4.9.2 fails if lto is enabled

[Bug lto/64636] New: Bootstrapping gcc-4.9.2 fails if lto is enabled

[carson at taltos dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

            Bug ID: 64636
           Summary: Bootstrapping gcc-4.9.2 fails if lto is enabled
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: carson at taltos dot org

LTO bootstrap throws an error on libiberty/regex.c. Removing the LTO compile
options results in a successful compilation of regex.o

gcc 4.9.2
Solaris 11.2
gcc configure command:
../gcc-4.9.2/configure --prefix=/Tools/SunOS_5.11_i86pc_amd64/gcc-4.9.2-allgnu
--with-local-prefix=/Tools/SunOS_5.11_i86pc_amd64/gcc-4.9.2-allgnu
--with-gnu-as --with-as=/usr/local/bin/gas --with-gnu-ld
--with-ld=/usr/local/bin/gld --with-cpu=native --with-arch=native
--enable-languages=c,c++ --with-gmp=/Tools/SunOS_5.11_i86pc_amd64/gmp-6.0.0a
--with-mpfr=/Tools/SunOS_5.11_i86pc_amd64/mpfr-3.1.2
--with-mpc=/Tools/SunOS_5.11_i86pc_amd64/mpc-1.0.2
--with-isl=/Tools/SunOS_5.11_i86pc_amd64/isl-0.12.2
--with-cloog=/Tools/SunOS_5.11_i86pc_amd64/cloog-0.18.1 CC='gcc -m64' CXX='g++
-m64' LDFLAGS='-R/Tools/SunOS_5.11_i86pc_amd64/gmp-6.0.0a/lib
-R/Tools/SunOS_5.11_i86pc_amd64/mpfr-3.1.2/lib
-R/Tools/SunOS_5.11_i86pc_amd64/mpc-1.0.2/lib
-R/Tools/SunOS_5.11_i86pc_amd64/isl-0.12.2/lib
-R/Tools/SunOS_5.11_i86pc_amd64/cloog-0.18.1/lib'

Bootstrap command:
gmake BOOT_LDFLAGS='-R/Tools/SunOS_5.11_i86pc_amd64/gmp-6.0.0a/lib
-R/Tools/SunOS_5.11_i86pc_amd64/mpfr-3.1.2/lib
-R/Tools/SunOS_5.11_i86pc_amd64/mpc-1.0.2/lib
-R/Tools/SunOS_5.11_i86pc_amd64/isl-0.12.2/lib
-R/Tools/SunOS_5.11_i86pc_amd64/cloog-0.18.1/lib' BUILD_CONFIG=bootstrap-lto
profiledbootstrap

Failing command:

/export/data/build/gcc-4.9.2-obj/./prev-gcc/xgcc
-B/export/data/build/gcc-4.9.2-obj/./prev-gcc/
-B/Tools/SunOS_5.11_i86pc_amd64/gcc-4.9.2-allgnu/x86_64-pc-solaris2.11/bin/
-B/Tools/SunOS_5.11_i86pc_amd64/gcc-4.9.2-allgnu/x86_64-pc-solaris2.11/bin/
-B/Tools/SunOS_5.11_i86pc_amd64/gcc-4.9.2-allgnu/x86_64-pc-solaris2.11/lib/
-isystem
/Tools/SunOS_5.11_i86pc_amd64/gcc-4.9.2-allgnu/x86_64-pc-solaris2.11/include
-isystem
/Tools/SunOS_5.11_i86pc_amd64/gcc-4.9.2-allgnu/x86_64-pc-solaris2.11/sys-include
   -c -DHAVE_CONFIG_H -g -O2 -flto=jobserver -frandom-seed=1 -ffat-lto-objects
-fprofile-use  -I. -I../../gcc-4.9.2/libiberty/../include  -W -Wall
-Wwrite-strings -Wc++-compat -Wstrict-prototypes -pedantic 
../../gcc-4.9.2/libiberty/regex.c -o regex.o
../../gcc-4.9.2/libiberty/regex.c: In function 'byte_re_match_2_internal':
../../gcc-4.9.2/libiberty/regex.c:8128:1: internal compiler error: in
streamer_write_gcov_count_stream, at data-streamer-out.c:303
 }
 ^
0x136348a streamer_write_gcov_count_stream
        ../../gcc-4.9.2/gcc/data-streamer-out.c:303
0x136348a streamer_write_gcov_count(output_block*, long)
        ../../gcc-4.9.2/gcc/data-streamer-out.c:188
0xf4270d stream_out_histogram_value(output_block*, histogram_value_t*)
        ../../gcc-4.9.2/gcc/value-prof.c:388
0x138c4c4 output_gimple_stmt
        ../../gcc-4.9.2/gcc/gimple-streamer-out.c:185
0x138c4c4 output_bb(output_block*, basic_block_def*, function*)
        ../../gcc-4.9.2/gcc/gimple-streamer-out.c:215
0xa99095 output_function
        ../../gcc-4.9.2/gcc/lto-streamer-out.c:1892
0xa99095 lto_output()
        ../../gcc-4.9.2/gcc/lto-streamer-out.c:2084
0xaf5b07 write_lto
        ../../gcc-4.9.2/gcc/passes.c:2298
0xaf806f ipa_write_summaries_1
        ../../gcc-4.9.2/gcc/passes.c:2360
0xaf806f ipa_write_summaries()
        ../../gcc-4.9.2/gcc/passes.c:2417
0x769323 ipa_passes
        ../../gcc-4.9.2/gcc/cgraphunit.c:2078
0x769323 compile()
        ../../gcc-4.9.2/gcc/cgraphunit.c:2174
0x76b3ac finalize_compilation_unit()
        ../../gcc-4.9.2/gcc/cgraphunit.c:2329
0x5a4bc3 c_write_global_declarations()
        ../../gcc-4.9.2/gcc/c/c-decl.c:10401
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

[Bug lto/64636] Bootstrapping gcc-4.9.2 fails if lto is enabled

[carson at taltos dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

--- Comment #1 from Carson Gaspar <carson at taltos dot org> ---
Created attachment 34467
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34467&action=edit
preprocessed regex.i

[Bug lto/64636] Bootstrapping gcc-4.9.2 fails if lto is enabled

[carson at taltos dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

--- Comment #2 from Carson Gaspar <carson at taltos dot org> ---
Removing -fprofile-use also makes the compilation work, so it appears to be a
problem with profile feedback combined with LTO. Either works individually, but
error out if used together.

[Bug lto/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[ostash at ostash dot kiev.ua]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

Viktor Ostashevskyi <ostash at ostash dot kiev.ua> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ostash at ostash dot kiev.ua

--- Comment #10 from Viktor Ostashevskyi <ostash at ostash dot kiev.ua> ---
Hello,

During GCC 10.1.0 bootstrap in LTO+PGO mode, configured as:

Configured with: ../gcc-10.1.0/configure --disable-multiarch
--disable-libquadmath --disable-libquadmath-support --disable-libssp
--disable-libstdcxx-pch --disable-multilib --disable-nls
--enable-checking=release --enable-__cxa_atexit --enable-languages=c,c++
--enable-libstdcxx-debug --enable-lto --enable-plugin --enable-threads=posix
--enable-tls --with-build-config=bootstrap-lto
--with-default-libstdcxx-abi=gcc4-compatible --with-linker-hash-style=gnu
--with-system-zlib --with-zstd=no --host=x86_64-pc-linux-gnu
--build=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu

I got following ICE:

/ostash/buildtc10/gcc-10.1.0-build/./prev-gcc/xgcc
-B/ostash/buildtc10/gcc-10.1.0-build/./prev-gcc/
-B/ostash/tc10/x86_64-pc-linux-gnu/bin/ -B/ostash/tc10/x86_64-pc-linux-gnu/bin/
-B/ostash/tc10/x86_64-pc-linux-gnu/lib/ -isystem
/ostash/tc10/x86_64-pc-linux-gnu/include -isystem
/ostash/tc10/x86_64-pc-linux-gnu/sys-include    -c -DHAVE_CONFIG_H
-fprofile-use -flto=jobserver -frandom-seed=1  -I.
-I../../gcc-10.1.0/libiberty/../include  -W -Wall -Wwrite-strings -Wc++-compat
-Wstrict-prototypes -Wshadow=local -pedantic  -D_GNU_SOURCE -fcf-protection
../../gcc-10.1.0/libiberty/hashtab.c -o hashtab.o
during IPA pass: fnsummary
../../gcc-10.1.0/libiberty/hashtab.c:997:1: internal compiler error: in
stream_out_histogram_value, at value-prof.c:338
  997 | }
      | ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make[3]: *** [hashtab.o] Error 1
make[3]: Leaving directory `/ostash/buildtc10/gcc-10.1.0-build/libiberty'
make[2]: *** [all-stagefeedback-libiberty] Error 2
make[2]: Leaving directory `/ostash/buildtc10/gcc-10.1.0-build'
make[1]: *** [stagefeedback-bubble] Error 2
make[1]: Leaving directory `/ostash/buildtc10/gcc-10.1.0-build'
make: *** [profiledbootstrap] Error 2


I can provide gcda files if needed.

[Bug lto/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[grgoffe at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

George R. Goffe <grgoffe at yahoo dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |grgoffe at yahoo dot com

--- Comment #11 from George R. Goffe <grgoffe at yahoo dot com> ---
Created attachment 48747
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48747&action=edit
preprocessed abstract.c produced by -S --save-temps gcc flag

[Bug lto/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[grgoffe at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

--- Comment #12 from George R. Goffe <grgoffe at yahoo dot com> ---
Hi,

I am seeing a failure in stream_out_histogram_value building the last release
of python 2.x ( 2.7.18).

I just posted the preprocessed c code for this problem.

Here is the failing command and following output:

/tools/python/Python-2.7.18# gcc -S --save-temps  -pthread -c
-fno-strict-aliasing -g -O2 -g -O0 -Wall -Wstrict-prototypes  -fprofile-use
-fprofile-correction -flto -fuse-linker-plugin -ffat-lto-objects
-flto-partition=none -g -I. -IInclude -I./Include  -fPIC -DPy_BUILD_CORE -o
Objects/abstract.o Objects/abstract.c
during IPA pass: fnsummary
Objects/abstract.c:3124:1: internal compiler error: in
stream_out_histogram_value, at value-prof.c:336
 3124 | }
      | ^
0x70b9a4 stream_out_histogram_value(output_block*, histogram_value_t*)
        ../../gcc/gcc/value-prof.c:336
0x16170b0 output_gimple_stmt
        ../../gcc/gcc/gimple-streamer-out.c:196
0x16170b0 output_bb(output_block*, basic_block_def*, function*)
        ../../gcc/gcc/gimple-streamer-out.c:231
0xbfa9b4 output_function
        ../../gcc/gcc/lto-streamer-out.c:2198
0xbfa9b4 lto_output()
        ../../gcc/gcc/lto-streamer-out.c:2530
0xc91241 write_lto
        ../../gcc/gcc/passes.c:2612
0xc91241 ipa_write_summaries_1
        ../../gcc/gcc/passes.c:2676
0xc91241 ipa_write_summaries()
        ../../gcc/gcc/passes.c:2731
0x9230ab ipa_passes
        ../../gcc/gcc/cgraphunit.c:2650
0x9230ab symbol_table::compile()
        ../../gcc/gcc/cgraphunit.c:2737
0x924d3c symbol_table::compile()
        ../../gcc/gcc/cgraphunit.c:2717
0x924d3c symbol_table::finalize_compilation_unit()
        ../../gcc/gcc/cgraphunit.c:2984

[Bug lto/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[grgoffe at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

--- Comment #13 from George R. Goffe <grgoffe at yahoo dot com> ---
Hi,

I see that I forgot to mention that the failure generated above was made with
the "latest" gcc in the repo. revision at 280157

[Bug gcov-profile/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|lto                         |gcov-profile
                 CC|                            |marxin at gcc dot gnu.org
             Status|WAITING                     |ASSIGNED

[Bug gcov-profile/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |marxin at gcc dot gnu.org

--- Comment #14 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed.

[Bug gcov-profile/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

--- Comment #15 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Liska <marxin@gcc.gnu.org>:

https://gcc.gnu.org/g:1921ebcaf6467996aede69e1bbe32400d8a20fe7

commit r11-3463-g1921ebcaf6467996aede69e1bbe32400d8a20fe7
Author: Martin Liska <mliska@suse.cz>
Date:   Fri Sep 25 16:21:34 2020 +0200

    gcov: fix streaming of HIST_TYPE_IOR histogram type.

    gcc/ChangeLog:

            PR gcov-profile/64636
            * value-prof.c (stream_out_histogram_value): Allow negative
            values for HIST_TYPE_IOR.

[Bug gcov-profile/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|11.0                        |
      Known to work|                            |11.0

--- Comment #16 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on master so far.

[Bug gcov-profile/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

--- Comment #17 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Martin Liska
<marxin@gcc.gnu.org>:

https://gcc.gnu.org/g:84dc3879f377ddaecb4054a7bf7671114dfb7228

commit r10-8840-g84dc3879f377ddaecb4054a7bf7671114dfb7228
Author: Martin Liska <mliska@suse.cz>
Date:   Fri Sep 25 16:21:34 2020 +0200

    gcov: fix streaming of HIST_TYPE_IOR histogram type.

    gcc/ChangeLog:

            PR gcov-profile/64636
            * value-prof.c (stream_out_histogram_value): Allow negative
            values for HIST_TYPE_IOR.

    (cherry picked from commit 1921ebcaf6467996aede69e1bbe32400d8a20fe7)

[Bug gcov-profile/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

--- Comment #18 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Martin Liska
<marxin@gcc.gnu.org>:

https://gcc.gnu.org/g:7c55364eaaf5f882e80e8943e702081f9648f582

commit r9-8968-g7c55364eaaf5f882e80e8943e702081f9648f582
Author: Martin Liska <mliska@suse.cz>
Date:   Thu Oct 1 21:28:30 2020 +0200

    gcov: fix streaming of HIST_TYPE_IOR histogram type.

    gcc/ChangeLog:

            PR gcov-profile/64636
            * value-prof.c (stream_out_histogram_value): Allow negative
            values for HIST_TYPE_IOR.

    (cherry picked from commit 1921ebcaf6467996aede69e1bbe32400d8a20fe7)

[Bug gcov-profile/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED

--- Comment #19 from Martin Liška <marxin at gcc dot gnu.org> ---
Resolved.

[Bug gcov-profile/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mikulas at artax dot karlin.mff.cu
                   |                            |ni.cz

--- Comment #20 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 72848 has been marked as a duplicate of this bug. ***

[Bug gcov-profile/64636] LTO PGO bootstrap fails on linux-sparc64 in stream_out_histogram_value

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |10.3.0
   Target Milestone|---                         |9.4