[Bug bootstrap/64693] New: [5 Regression] PCH failed with LTO + profiledbootstrap

[Bug bootstrap/64693] New: [5 Regression] PCH failed with LTO + profiledbootstrap

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64693

            Bug ID: 64693
           Summary: [5 Regression] PCH failed with LTO + profiledbootstrap
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com

On Linux/x86-64, r216320 configured with

--prefix=/usr/5.0.0 --enable-clocale=gnu --with-system-zlib --enable-shared
--with-demangler-in-ld --with-build-config=bootstrap-lto --disable-werror
--with-fpmath=sse --enable-languages=c,c++,fortran,java,lto,objc

and built with "make -j8 profiledbootstra" gave many PCH failures:

https://gcc.gnu.org/ml/gcc-regression/2014-10/msg00392.html

r216301 is OK.  r219883 still has those failures:

https://gcc.gnu.org/ml/gcc-testresults/2015-01/msg02251.html

[Bug lto/64693] [5 Regression] PCH failed with --with-build-config=bootstrap-lto

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64693

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-01-20
          Component|bootstrap                   |lto
   Target Milestone|---                         |5.0
            Summary|[5 Regression] PCH failed   |[5 Regression] PCH failed
                   |with LTO +                  |with
                   |profiledbootstrap           |--with-build-config=bootstr
                   |                            |ap-lto
     Ever confirmed|0                           |1

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
--with-build-config=bootstrap-lto is sufficient to trigger this.

[Bug lto/64693] [5 Regression] PCH failed with --with-build-config=bootstrap-lto

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64693

H.J. Lu <hjl.tools at gmail dot com> changed:

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

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
It is caused by r216305.  PCH tests failed with

./common-1.h:3:1: internal compiler error: Segmentation fault^M
0xc35c84 crash_signal(int) [clone .lto_priv.1181]^M
        /export/project/git/gcc-regression/gcc/gcc/toplev.c:340^M
0xfda549 lookup_page_table_entry^M
        /export/project/git/gcc-regression/gcc/gcc/ggc-page.c:638^M
0xfda549 ggc_get_size(void const*)^M
        /export/project/git/gcc-regression/gcc/gcc/ggc-page.c:1572^M
0xfda549 gt_pch_note_object(void*, void*, void (*)(void*, void*, void
(*)(void*, void*), void*))^M
        /export/project/git/gcc-regression/gcc/gcc/ggc-common.c:352^M
0x7d07d8 gt_pch_nx_dw_line_info_table_struct(void*)^M
        ./gt-dwarf2out.h:967^M
0xfd8687 gt_pch_save(_IO_FILE*)^M
        /export/project/git/gcc-regression/gcc/gcc/ggc-common.c:502^M
0x7c6e97 c_common_write_pch()^M
        /export/project/git/gcc-regression/gcc/gcc/c-family/c-pch.c:187^M
0xd69f67 c_common_parse_file()^M
        /export/project/git/gcc-regression/gcc/gcc/c-family/c-opts.c:1047^M
Please submit a full bug report,^M
with preprocessed source if appropriate.^M
Please include the complete backtrace with any bug report.^M
See <http://gcc.gnu.org/bugs.html> for instructions.^M

FAIL: ./common-1.h  -O0 -g (internal compiler error)

[Bug lto/64693] [5 Regression] PCH failed with --with-build-config=bootstrap-lto

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64693

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
I remember seeing those failures with a regular LTO bootstrap as well,
profiling not required.

[Bug lto/64693] [5 Regression] PCH failed with --with-build-config=bootstrap-lto

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64693

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 34534
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34534&action=edit
Test case

I've been working on a patch for the testcase.
>From gcc-bugs-return-474441-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 22 19:44:40 2015
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Subject: [Bug ipa/64694] [5 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idd694

--- Comment #8 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Thu Jan 22 19:44:00 2015
New Revision: 220011

URL: https://gcc.gnu.org/viewcvs?rev"0011&root=gcc&view=rev
Log:

    PR ipa/64694
    * ipa-inline.c (inline_small_functions): Fix thinko in maintenance of
    heap.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-inline.c

[Bug lto/64693] [5 Regression] PCH failed with --with-build-config=bootstrap-lto

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64693

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |trippels at gcc dot gnu.org

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
*** Bug 64908 has been marked as a duplicate of this bug. ***

[Bug lto/64693] [5 Regression] PCH failed with --with-build-config=bootstrap-lto

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64693

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at

https://gcc.gnu.org/ml/gcc-patches/2015-01/msg02108.html

[Bug lto/64693] [5 Regression] PCH failed with --with-build-config=bootstrap-lto

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64693

--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #6)
> A patch is posted at
> 
> https://gcc.gnu.org/ml/gcc-patches/2015-01/msg02108.html

Hello.

I've just finished more sensitive patch for the issue and I've just restarted
profiled bootstrap.

Tomorrow, I'm going to send new version of the patch.

Thanks,
Martin
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Subject: [Bug target/64979] [4.8/4.9/5 Regression] stdarg optimization not able to find escape sites in phi nodes
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idd979

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb  9 17:01:36 2015
New Revision: 220543

URL: https://gcc.gnu.org/viewcvs?rev"0543&root=gcc&view=rev
Log:
    PR target/64979
    * tree-stdarg.c (pass_stdarg::execute): Scan phi node args for
    va_list escapes.

    * gcc.dg/tree-ssa/stdarg-7.c: New test.
    * gcc.c-torture/execute/pr64979.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr64979.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/stdarg-7.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-stdarg.c