[Bug target/104448] New: [10/11/12 Regression] ICE: in initialize, at function-abi.cc:108 with -mavx5124vnniw / -mavx5124fmaps -mno-xsave -mabi=ms

[Bug target/104448] New: [10/11/12 Regression] ICE: in initialize, at function-abi.cc:108 with -mavx5124vnniw / -mavx5124fmaps -mno-xsave -mabi=ms

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104448

            Bug ID: 104448
           Summary: [10/11/12 Regression] ICE: in initialize, at
                    function-abi.cc:108 with -mavx5124vnniw /
                    -mavx5124fmaps -mno-xsave -mabi=ms
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu

Compiler output: (empty source file)
$ echo > testcase.c
$ x86_64-pc-linux-gnu-gcc -mavx5124vnniw -mno-xsave -mabi=ms testcase.c 
testcase.c: internal compiler error: in initialize, at function-abi.cc:108
0x6dff4d predefined_function_abi::initialize(unsigned int, HARD_REG_SET const&)
        /repo/gcc-trunk/gcc/function-abi.cc:108
0xcf5695 backend_init
        /repo/gcc-trunk/gcc/toplev.cc:1785
0xcf5695 do_compile
        /repo/gcc-trunk/gcc/toplev.cc:2140
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ x86_64-pc-linux-gnu-gcc -mavx5124fmaps -mno-xsave -mabi=ms testcase.c 
testcase.c: internal compiler error: in initialize, at function-abi.cc:108
0x6dff4d predefined_function_abi::initialize(unsigned int, HARD_REG_SET const&)
        /repo/gcc-trunk/gcc/function-abi.cc:108
0xcf5695 backend_init
        /repo/gcc-trunk/gcc/toplev.cc:1785
0xcf5695 do_compile
        /repo/gcc-trunk/gcc/toplev.cc:2140
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r12-7089-20220208123931-g0103c2e4082-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r12-7089-20220208123931-g0103c2e4082-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220208 (experimental) (GCC)

[Bug target/104448] [10/11/12 Regression] ICE: in initialize, at function-abi.cc:108 with -mavx5124vnniw / -mavx5124fmaps -mno-xsave -mabi=ms

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104448

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-02-09
           Priority|P3                          |P2
             Status|UNCONFIRMED                 |NEW
   Target Milestone|---                         |10.4

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
108                 gcc_assert (overlaps_hard_reg_set_p (all_clobbers, mode,
regno)
109                             && overlaps_hard_reg_set_p (m_mode_clobbers[i],
110                                                         mode, regno));

(gdb) p debug_hard_reg_set(all_clobbers) 
{ 0 1 2 8 9 10 11 12 13 14 15 17 18 20 21 22 23 24 25 28 29 30 31 32 33 34 35
36 37 38 39 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73
74 75 }

$1 = void
(gdb) p regno
$2 = 44

Confirmed.  Quite possibly the -mabi=ms support is incomplete here.

[Bug target/104448] [10/11/12 Regression] ICE: in initialize, at function-abi.cc:108 with -mavx5124vnniw / -mavx5124fmaps -mno-xsave -mabi=ms

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104448

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |uros at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
r12-7147-g2f9ab267e725ddf2b6b44113e4fc4fb8b2a6adfb fixed this.
So, shall we just add the testcase into the testsuite and be done with it?

[Bug target/104448] [10/11/12 Regression] ICE: in initialize, at function-abi.cc:108 with -mavx5124vnniw / -mavx5124fmaps -mno-xsave -mabi=ms

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104448

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #2)
> r12-7147-g2f9ab267e725ddf2b6b44113e4fc4fb8b2a6adfb fixed this.
> So, shall we just add the testcase into the testsuite and be done with it?

I think so. -mno-xsave disabled AVX support and left AVX2+ enabled, which is
impossible combination.

[Bug target/104448] [10/11/12 Regression] ICE: in initialize, at function-abi.cc:108 with -mavx5124vnniw / -mavx5124fmaps -mno-xsave -mabi=ms

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104448

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:f9c4917f01692a10f122f5ad56e559ba27751ace

commit r12-7263-gf9c4917f01692a10f122f5ad56e559ba27751ace
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Feb 16 17:03:58 2022 +0100

    testsuite: Add testcase for already fixed PR [PR104448]

    This PR has been fixed with r12-7147-g2f9ab267e725ddf2.

    2022-02-16  Jakub Jelinek  <jakub@redhat.com>

            PR target/104448
            * gcc.target/i386/pr104448.c: New test.

[Bug target/104448] [10/11/12 Regression] ICE: in initialize, at function-abi.cc:108 with -mavx5124vnniw / -mavx5124fmaps -mno-xsave -mabi=ms

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104448

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Dup then.

*** This bug has been marked as a duplicate of bug 104462 ***

[Bug target/104448] [10/11/12 Regression] ICE: in initialize, at function-abi.cc:108 with -mavx5124vnniw / -mavx5124fmaps -mno-xsave -mabi=ms

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104448

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:4dd24152c8cb5bca5fff1ddabb897c9452aab6a8

commit r11-9610-g4dd24152c8cb5bca5fff1ddabb897c9452aab6a8
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Feb 16 17:03:58 2022 +0100

    testsuite: Add testcase for already fixed PR [PR104448]

    This PR has been fixed with r12-7147-g2f9ab267e725ddf2.

    2022-02-16  Jakub Jelinek  <jakub@redhat.com>

            PR target/104448
            * gcc.target/i386/pr104448.c: New test.

    (cherry picked from commit f9c4917f01692a10f122f5ad56e559ba27751ace)