[Bug rtl-optimization/104499] New: [12 Regression] ICE: in emit_move_insn, at expr.cc:4010 at -O1

[Bug rtl-optimization/104499] New: [12 Regression] ICE: in emit_move_insn, at expr.cc:4010 at -O1

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104499

            Bug ID: 104499
           Summary: [12 Regression] ICE: in emit_move_insn, at
                    expr.cc:4010 at -O1
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          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

Created attachment 52412
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52412&action=edit
reduced testcase

Compiler output:
$ x86_64-pc-linux-gnu-gcc -O testcase.c 
during RTL pass: expand
testcase.c: In function 'foo':
testcase.c:6:1: internal compiler error: in emit_move_insn, at expr.cc:4010
    6 | foo (void)
      | ^~~
0x6cb317 emit_move_insn(rtx_def*, rtx_def*)
        /repo/gcc-trunk/gcc/expr.cc:4010
0xe71cfa expand_gimple_stmt_1
        /repo/gcc-trunk/gcc/cfgexpand.cc:3994
0xe71cfa expand_gimple_stmt
        /repo/gcc-trunk/gcc/cfgexpand.cc:4028
0xe779b8 expand_gimple_basic_block
        /repo/gcc-trunk/gcc/cfgexpand.cc:6069
0xe79b47 execute
        /repo/gcc-trunk/gcc/cfgexpand.cc:6795
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-r12-7195-20220211112825-g72f8d228aff-checking-yes-rtl-df-extra-nobootstrap-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
--disable-bootstrap --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-r12-7195-20220211112825-g72f8d228aff-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220211 (experimental) (GCC)

[Bug rtl-optimization/104499] [12 Regression] ICE: in emit_move_insn, at expr.cc:4010 at -O1

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104499

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org
   Last reconfirmed|                            |2022-02-11
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
           Priority|P3                          |P1
   Target Milestone|---                         |12.0

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r12-5489-g0888d6bbe97e10de0e624f4ab46acc276e5ee1d7

[Bug tree-optimization/104499] [12 Regression] ICE: in emit_move_insn, at expr.cc:4010 at -O1

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104499

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

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

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 52414
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52414&action=edit
gcc12-pr104499.patch

Untested fix.

[Bug tree-optimization/104499] [12 Regression] ICE: in emit_move_insn, at expr.cc:4010 at -O1

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104499

--- Comment #3 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:9355a8c35883b5125851bb9b4169a1a1cd8e343f

commit r12-7202-g9355a8c35883b5125851bb9b4169a1a1cd8e343f
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Fri Feb 11 20:27:23 2022 +0100

    match.pd: Fix up (X & Y) CMP 0 -> X CMP2 ~Y simplifications [PR104499]

    The following testcase ICEs on x86_64-linux, because match.pd emits
    there a NOP_EXPR cast from int*8 vector type with BLKmode to
    unsigned*8 vector type with BLKmode and vec-lowering isn't prepared
    to handle such casts.

    Fixed by using VIEW_CONVERT_EXPR instead.

    2022-02-11  Jakub Jelinek  <jakub@redhat.com>

            PR tree-optimization/104499
            * match.pd ((X & Y) CMP 0 -> X CMP2 ~Y): Use view_convert instead
            of convert.

            * gcc.c-torture/compile/pr104499.c: New test.

[Bug tree-optimization/104499] [12 Regression] ICE: in emit_move_insn, at expr.cc:4010 at -O1

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104499

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

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

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.