[Bug c/100784] New: ICE: Segmentation fault, contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*)

[Bug c/100784] New: ICE: Segmentation fault, contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*)

[cnsun at uwaterloo dot ca]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100784

            Bug ID: 100784
           Summary: ICE: Segmentation fault,
                    contains_struct_check(tree_node*,
                    tree_node_structure_enum, char const*, int, char
                    const*)
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: cnsun at uwaterloo dot ca
  Target Milestone: ---

$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /tmp/tmp.tVhv2eaPzV-gcc-builder/gcc/configure
--enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch
--prefix=/scratch/software/gcc-trunk --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20210526 (experimental) [master revision
:21638bbbf:1fd76b24306ed4df4cf9e797d900699ed59ce7f7] (GCC)

$ cat mutant.c
typedef double v2df __attribute__((__vector_size__(16)));
f() {
  v2df x;
  v2df y;
  __builtin_ia32_shufpd(x, y, 1);
}

$ gcc-trunk  mutant.c
mutant.c:2:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
    2 | f() {
      | ^
during GIMPLE pass: lower
mutant.c: In function ‘f’:
mutant.c:2:1: internal compiler error: Segmentation fault
0xf01803 crash_signal
        /tmp/tmp.tVhv2eaPzV-gcc-builder/gcc/gcc/toplev.c:327
0xf3cf82 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
        /tmp/tmp.tVhv2eaPzV-gcc-builder/gcc/gcc/tree.h:3479
0xf3cf82 verify_gimple_assign_ternary
        /tmp/tmp.tVhv2eaPzV-gcc-builder/gcc/gcc/tree-cfg.c:4180
0xf3fb37 verify_gimple_in_seq_2
        /tmp/tmp.tVhv2eaPzV-gcc-builder/gcc/gcc/tree-cfg.c:5121
0xf42485 verify_gimple_in_seq(gimple*)
        /tmp/tmp.tVhv2eaPzV-gcc-builder/gcc/gcc/tree-cfg.c:5160
0xe12660 execute_function_todo
        /tmp/tmp.tVhv2eaPzV-gcc-builder/gcc/gcc/passes.c:2044
0xe1331e execute_todo
        /tmp/tmp.tVhv2eaPzV-gcc-builder/gcc/gcc/passes.c:2096
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

[Bug target/100784] ICE: Segmentation fault, contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*)

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100784

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |glisse at gcc dot gnu.org,
                   |                            |marxin at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-05-27
     Ever confirmed|0                           |1

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r10-521-g4d508751f4214910.

[Bug target/100784] ICE: Segmentation fault, contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*)

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100784

--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
Do we need to punt if there is no lhs?
(with optimization the call should be removed as pure)
I probably won't have time to try it for a while.

[Bug target/100784] [10/11/12 Regression] ICE: Segmentation fault, contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100784

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ICE: Segmentation fault,    |[10/11/12 Regression] ICE:
                   |contains_struct_check(tree_ |Segmentation fault,
                   |node*,                      |contains_struct_check(tree_
                   |tree_node_structure_enum,   |node*,
                   |char const*, int, char      |tree_node_structure_enum,
                   |const*)                     |char const*, int, char
                   |                            |const*)
   Target Milestone|---                         |10.4

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Like the other case the calls should be replaced by GIMPLE_NOP in the x86
folder
when there's no LHS.

[Bug target/100784] [10/11/12 Regression] ICE: Segmentation fault, contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100784

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org
             Status|NEW                         |ASSIGNED

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Testing a patch.

[Bug target/100784] [10/11/12 Regression] ICE: Segmentation fault, contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*)

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100784

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:d63d9c3dd160dce24f0209f193b8e7388b19f712

commit r12-6771-gd63d9c3dd160dce24f0209f193b8e7388b19f712
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Jan 20 14:34:33 2022 +0100

    target/100784 - avoid ICE with folding __builtin_ia32_shufpd

    This avoids ICEing when there is no LHS on the call by following
    what foldings of other builtins do in , namely not folding.

    2022-01-20  Richard Biener  <rguenther@suse.de>

            PR target/100784
            * config/i386/i386.cc (ix86_gimple_fold_builtin): Check for
            LHS before folding __builtin_ia32_shufpd and friends.

[Bug target/100784] [10/11 Regression] ICE: Segmentation fault, contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*)

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100784

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

https://gcc.gnu.org/g:2b1b5b16f3b45647b1be87cbbe7fe8b4b854b7c3

commit r11-9581-g2b1b5b16f3b45647b1be87cbbe7fe8b4b854b7c3
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Jan 20 14:34:33 2022 +0100

    target/100784 - avoid ICE with folding __builtin_ia32_shufpd

    This avoids ICEing when there is no LHS on the call by following
    what foldings of other builtins do in , namely not folding.

    2022-01-20  Richard Biener  <rguenther@suse.de>

            PR target/100784
            * config/i386/i386.c (ix86_gimple_fold_builtin): Check for
            LHS before folding __builtin_ia32_shufpd and friends.

    (cherry picked from commit d63d9c3dd160dce24f0209f193b8e7388b19f712)

[Bug target/100784] [10 Regression] ICE: Segmentation fault, contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*)

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100784

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:e0ae287e2c199a22d3f0c2de40a4869a44c8b795

commit r10-10499-ge0ae287e2c199a22d3f0c2de40a4869a44c8b795
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Jan 20 14:34:33 2022 +0100

    target/100784 - avoid ICE with folding __builtin_ia32_shufpd

    This avoids ICEing when there is no LHS on the call by following
    what foldings of other builtins do in , namely not folding.

    2022-01-20  Richard Biener  <rguenther@suse.de>

            PR target/100784
            * config/i386/i386.c (ix86_gimple_fold_builtin): Check for
            LHS before folding __builtin_ia32_shufpd and friends.

    (cherry picked from commit d63d9c3dd160dce24f0209f193b8e7388b19f712)

[Bug target/100784] [10 Regression] ICE: Segmentation fault, contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100784

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |10.3.1
      Known to fail|                            |10.3.0
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.