[Bug bootstrap/100411] New: GCC 11 branch bootstrap ICE on x86_w64-w64-mingw32

[Bug bootstrap/100411] New: GCC 11 branch bootstrap ICE on x86_w64-w64-mingw32

[lh_mouse at 126 dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

            Bug ID: 100411
           Summary: GCC 11 branch bootstrap ICE on x86_w64-w64-mingw32
           Product: gcc
           Version: 11.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: lh_mouse at 126 dot com
  Target Milestone: ---

(i686-w64-mingw32 succeeded.)

/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/./prev-gcc/xg++
-B/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/./prev-gcc/
-B/mingw64/x86_64-w64-mingw32/bin/ -nostdinc++
-B/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/prev-x86_64-w64-mingw32/libstdc++-v3/src/.libs
-B/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/prev-x86_64-w64-mingw32/libstdc++-v3/libsupc++/.libs

-I/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/prev-x86_64-w64-mingw32/libstdc++-v3/include/x86_64-w64-mingw32

-I/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/prev-x86_64-w64-mingw32/libstdc++-v3/include

-I/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/gcc/libstdc++-v3/libsupc++
-L/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/prev-x86_64-w64-mingw32/libstdc++-v3/src/.libs
-L/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/prev-x86_64-w64-mingw32/libstdc++-v3/libsupc++/.libs
 -fno-PIE -c   -g -O2 -D__USE_MINGW_ACCESS -Wno-pedantic-ms-format
-fno-checking -gtoggle -D__USE_MINGW_ACCESS -DIN_GCC     -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings   -DHAVE_CONFIG_H -I. -I. -I../../gcc/gcc
-I../../gcc/gcc/. -I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include
-I../../gcc/gcc/../libcody -I/mingw64/include -I/mingw64/include
-I/mingw64/include  -I../../gcc/gcc/../libdecnumber
-I../../gcc/gcc/../libdecnumber/bid -I../libdecnumber
-I../../gcc/gcc/../libbacktrace -I/mingw64/include -D__USE_MINGW_ANSI_STDIO=1
-I/mingw64/include -o tree-sra.o -MT tree-sra.o -MMD -MP -MF
./.deps/tree-sra.TPo ../../gcc/gcc/tree-sra.c
during RTL pass: final
../../gcc/gcc/tree-sra.c: In function 'bool
path_comparable_for_same_access(tree)':
../../gcc/gcc/tree-sra.c:1983:1: internal compiler error: in
seh_emit_stackalloc, at config/i386/winnt.c:1056
 1983 | }
      | ^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc-mcf.lhmouse.com/> for instructions.
make[3]: *** [Makefile:1142: tree-sra.o] Error 1
make[3]: Leaving directory
'/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/gcc'
make[2]: *** [Makefile:4833: all-stage2-gcc] Error 2
make[2]: Leaving directory
'/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32'
make[1]: *** [Makefile:24280: stage2-bubble] Error 2
make[1]: Leaving directory
'/d/lh_mouse/GitHub/MINGW-packages-dev/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32'
make: *** [Makefile:1013: all] Error 2

[Bug target/100411] GCC 11 branch bootstrap ICE on x86_w64-w64-mingw32

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |11.2
           Keywords|                            |build, ice-on-valid-code
          Component|bootstrap                   |target

[Bug target/100411] GCC 11 branch bootstrap ICE on x86_w64-w64-mingw32

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ebotcazou at gcc dot gnu.org
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2021-05-04
             Status|UNCONFIRMED                 |WAITING

--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Can you post the configure line?

[Bug target/100411] GCC 11 branch bootstrap ICE on x86_w64-w64-mingw32

[lh_mouse at 126 dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

--- Comment #2 from Liu Hao <lh_mouse at 126 dot com> ---
(In reply to Eric Botcazou from comment #1)
> Can you post the configure line?

As you wish, but it is very long (I have no idea why they have been there):

```
  $ ../gcc/configure --prefix=/mingw64 --with-local-prefix=/mingw64/local
--build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32
--target=x86_64-w64-mingw32
--with-native-system-header-dir=/mingw64/x86_64-w64-mingw32/include
--libexecdir=/mingw64/lib --enable-bootstrap --with-arch=x86-64
--with-tune=nocona --enable-languages=c,lto,c++ --enable-shared --enable-static
--enable-threads=mcf --enable-graphite --enable-fully-dynamic-string
--enable-libstdcxx-time=yes --disable-libstdcxx-pch --disable-libstdcxx-debug
--enable-libstdcxx-filesystem-ts=yes --disable-isl-version-check --enable-lto
--enable-libgomp --disable-multilib --enable-checking=release --disable-rpath
--disable-win32-registry --enable-nls --disable-werror --disable-symvers
--with-libiconv --with-system-zlib --with-gmp=/mingw64 --with-mpfr=/mingw64
--with-mpc=/mingw64 --with-isl=/mingw64 --with-pkgversion=GCC with MCF thread
model, built by LH_Mouse. --with-bugurl=https://gcc-mcf.lhmouse.com/
--with-gnu-as --with-gnu-ld --with-boot-ldflags=-pipe
-Wl,--dynamicbase,--high-entropy-va,--nxcompat,--default-image-base-high
-Wl,--disable-dynamicbase,--default-image-base-low -static-libstdc++
-static-libgcc LDFLAGS_FOR_TARGET=-pipe
-Wl,--dynamicbase,--high-entropy-va,--nxcompat,--default-image-base-high
--enable-linker-plugin-flags=LDFLAGS=-static-libstdc++\ -static-libgcc\ -pipe\
-Wl,--dynamicbase,--high-entropy-va,--nxcompat,--default-image-base-high\
-Wl,--stack,12582912 --disable-tls --enable-plugin
```

The PKGBUILD script can be found at
<https://github.com/lhmouse/MINGW-packages-dev/blob/master/mingw-w64-gcc-git/PKGBUILD#L162>.

[Bug target/100411] GCC 11 branch bootstrap ICE on x86_w64-w64-mingw32

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW

--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Thanks, I can reproduce, it comes from --with-tune=nocona so you might want to
remove it (it's long obsolete in any case).

[Bug target/100411] GCC 11 branch bootstrap ICE on x86_w64-w64-mingw32

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |ebotcazou at gcc dot gnu.org

--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Investigating.

[Bug target/100411] [11 regression] bootstrap failure on 64-bit Windows with --with-tune=nocona

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Created attachment 50752
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50752&action=edit
Tentative fix

Please give it a try in your setup when you get a chance.

[Bug target/100411] [11 regression] bootstrap failure on 64-bit Windows with --with-tune=nocona

[lh_mouse at 126 dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

--- Comment #6 from Liu Hao <lh_mouse at 126 dot com> ---
Thanks for the quick fix. It has resolved this issue on my setup.

[Bug rtl-optimization/100411] [11 regression] bootstrap failure on 64-bit Windows with --with-tune=nocona

[lh_mouse at 126 dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

--- Comment #7 from Liu Hao <lh_mouse at 126 dot com> ---
Does this affect other `-mtune=` values too? I am thinking about
`--with-tune=ivybridge`.

[Bug rtl-optimization/100411] [11 regression] bootstrap failure on 64-bit Windows with --with-tune=nocona

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Does this affect other `-mtune=` values too? I am thinking about
> `--with-tune=ivybridge`.

It's accidental, so only testing can give the answer.

[Bug rtl-optimization/100411] [11 regression] bootstrap failure on 64-bit Windows with --with-tune=nocona

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Eric Botcazou <ebotcazou@gcc.gnu.org>:

https://gcc.gnu.org/g:dfd2c92f3f5d204619bd218aa72b162997690796

commit r12-517-gdfd2c92f3f5d204619bd218aa72b162997690796
Author: Eric Botcazou <ebotcazou@adacore.com>
Date:   Wed May 5 16:50:55 2021 +0200

    Fix PR rtl-optimization/100411

    This is the bootstrap failure of GCC 11 on MinGW64 configured with
--enable-
    tune=nocona.  The bottom line is that SEH does not support CFI for
epilogues
    but the x86 back-end nevertheless attaches it to instructions, so we have
to
    filter it out and this is done by detecting the end of the prologue by
means
    of the NOTE_INSN_PROLOGUE_END note.

    But the compiler manages to generate a second epilogue before this note in
    the RTL stream and this fools the aforementioned logic.  The root cause is
    cross-jumping, which inserts a jump before the end of the prologue, in fact
    just before the note; the rest (CFG cleanup, BB reordering, etc) is
downhill
    from there.

    gcc/
            PR rtl-optimization/100411
            * cfgcleanup.c (try_crossjump_to_edge): Also skip end of prologue
            and beginning of function markers.

[Bug rtl-optimization/100411] [11 regression] bootstrap failure on 64-bit Windows with --with-tune=nocona

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Eric Botcazou
<ebotcazou@gcc.gnu.org>:

https://gcc.gnu.org/g:dcb23f439f3cf5601fb8bf49889accd16f3b30a1

commit r11-8354-gdcb23f439f3cf5601fb8bf49889accd16f3b30a1
Author: Eric Botcazou <ebotcazou@adacore.com>
Date:   Wed May 5 16:50:55 2021 +0200

    Fix PR rtl-optimization/100411

    This is the bootstrap failure of GCC 11 on MinGW64 configured with
--enable-
    tune=nocona.  The bottom line is that SEH does not support CFI for
epilogues
    but the x86 back-end nevertheless attaches it to instructions, so we have
to
    filter it out and this is done by detecting the end of the prologue by
means
    of the NOTE_INSN_PROLOGUE_END note.

    But the compiler manages to generate a second epilogue before this note in
    the RTL stream and this fools the aforementioned logic.  The root cause is
    cross-jumping, which inserts a jump before the end of the prologue, in fact
    just before the note; the rest (CFG cleanup, BB reordering, etc) is
downhill
    from there.

    gcc/
            PR rtl-optimization/100411
            * cfgcleanup.c (try_crossjump_to_edge): Also skip end of prologue
            and beginning of function markers.

[Bug rtl-optimization/100411] [11 regression] bootstrap failure on 64-bit Windows with --with-tune=nocona

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100411

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

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

--- Comment #11 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
.