[Bug target/115321] New: [15 regression] ICE when building grub (extract_insn, at recog.cc:2812)

[Bug target/115321] New: [15 regression] ICE when building grub (extract_insn, at recog.cc:2812)

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115321

            Bug ID: 115321
           Summary: [15 regression] ICE when building grub (extract_insn,
                    at recog.cc:2812)
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sjames at gcc dot gnu.org
  Target Milestone: ---

Created attachment 58326
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58326&action=edit
pgp_module-pgp.i

```
$ gcc -c ./commands/pgp_module-pgp.i -m32 -march=i386
In file included from
/var/tmp/portage/sys-boot/grub-2.12-r4/work/grub-2.12/grub-core/commands/pgp.c:19:
/var/tmp/portage/sys-boot/grub-2.12-r4/work/grub-2.12/include/grub/types.h: In
function ‘grub_swap_bytes32’:
/var/tmp/portage/sys-boot/grub-2.12-r4/work/grub-2.12/include/grub/types.h:218:1:
error: unrecognizable insn:
  218 | }
      | ^
(insn 5 2 6 2 (set (reg:SI 101)
        (ior:SI (and:SI (mem/c:SI (reg/f:SI 92 virtual-incoming-args) [2 x+0 S4
A32])
                (const_int -65536 [0xffffffffffff0000]))
            (lshiftrt:SI (bswap:SI (mem/c:SI (reg/f:SI 92
virtual-incoming-args) [2 x+0 S4 A32]))
                (const_int 16 [0x10]))))
"/var/tmp/portage/sys-boot/grub-2.12-r4/work/grub-2.12/include/grub/types.h":217:9
-1
     (nil))
during RTL pass: vregs
/var/tmp/portage/sys-boot/grub-2.12-r4/work/grub-2.12/include/grub/types.h:218:1:
internal compiler error: in extract_insn, at recog.cc:2812
0x565212e8b58d _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
       
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/rtl-error.cc:108
0x565212e8ca9a _fatal_insn_not_found(rtx_def const*, char const*, int, char
const*)
       
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/rtl-error.cc:116
0x5652124c38e5 extract_insn(rtx_insn*)
        /usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/recog.cc:2812
0x565213bbfa20 instantiate_virtual_regs_in_insn
       
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/function.cc:1612
0x565213bbfa20 instantiate_virtual_regs
       
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/function.cc:1995
0x565213bbf715 execute
       
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/function.cc:2042
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
```

```
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/15/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-15.0.9999/work/gcc-15.0.9999/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/15
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/15/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/15/python
--enable-languages=c,c++,fortran,rust --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--disable-libunwind-exceptions --enable-checking=yes,extra,rtl
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo Hardened
15.0.9999 p, commit 9a866462097fe24696c924a3874fd307c775e860'
--with-gcc-major-version-only --enable-libstdcxx-time --enable-lto
--disable-libstdcxx-pch --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --enable-multilib
--with-multilib-list=m32,m64 --disable-fixed-point --enable-targets=all
--enable-libgomp --disable-libssp --disable-libada --disable-cet
--disable-systemtap --enable-valgrind-annotations --disable-vtable-verify
--disable-libvtv --with-zstd --with-isl --disable-isl-version-check
--enable-default-pie --enable-host-pie --enable-host-bind-now
--enable-default-ssp --disable-fixincludes --with-build-config='bootstrap-O3
bootstrap-lto'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20240601 (experimental)
85f15ea65a97686ad39af0c14b7dd9a9372e3a19 (Gentoo Hardened 15.0.9999 p, commit
9a866462097fe24696c924a3874fd307c775e860)
```

[Bug target/115321] [15 regression] ICE when building grub (extract_insn, at recog.cc:2812) since r15-930

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115321

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[15 regression] ICE when    |[15 regression] ICE when
                   |building grub               |building grub
                   |(extract_insn, at           |(extract_insn, at
                   |recog.cc:2812)              |recog.cc:2812) since
                   |                            |r15-930
            Version|unknown                     |15.0
   Target Milestone|---                         |15.0

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I am 99.99% sure this was introduced by r15-930-ge715204f203d31 .

[Bug target/115321] [15 regression] ICE when building grub (extract_insn, at recog.cc:2812) since r15-930

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115321

Sam James <sjames at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ubizjak at gmail dot com

--- Comment #2 from Sam James <sjames at gcc dot gnu.org> ---
```
void grub_cmd_distrust() { unsigned x = __builtin_bswap32(x); }
```

[Bug target/115321] [15 regression] ICE when building grub (extract_insn, at recog.cc:2812) since r15-930

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115321

--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
uh, void grub_cmd_distrust(unsigned x) { x = __builtin_bswap32(x); }, obviously
;)

[Bug target/115321] [15 regression] ICE when building grub (extract_insn, at recog.cc:2812) since r15-930

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115321

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2024-06-03
           Assignee|unassigned at gcc dot gnu.org      |ubizjak at gmail dot com
     Ever confirmed|0                           |1

--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 58327
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58327&action=edit
Patch

[Bug target/115321] [15 regression] ICE when building grub (extract_insn, at recog.cc:2812) since r15-930

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115321

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Uros Bizjak <uros@gcc.gnu.org>:

https://gcc.gnu.org/g:6ab5145825ca7e96fcbe3aa505d42e4ae8f81009

commit r15-993-g6ab5145825ca7e96fcbe3aa505d42e4ae8f81009
Author: Uros Bizjak <ubizjak@gmail.com>
Date:   Mon Jun 3 15:48:18 2024 +0200

    i386: Force operand 1 of bswapsi2 to a register for !TARGET_BSWAP
[PR115321]

            PR target/115321

    gcc/ChangeLog:

            * config/i386/i386.md (bswapsi2): Force operand 1
            to a register also for !TARGET_BSWAP.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr115321.c: New test.

[Bug target/115321] [15 regression] ICE when building grub (extract_insn, at recog.cc:2812) since r15-930

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115321

Uroš Bizjak <ubizjak at gmail dot com> changed:

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

--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.

[Bug target/115321] [15 regression] ICE when building grub (extract_insn, at recog.cc:2812) since r15-930

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115321

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

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

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 115329 has been marked as a duplicate of this bug. ***