[Bug target/95255] New: [10/11 Regression] ICE in gen_roundevendf2, at config/i386/i386.md:16328 since r10-2809-gd3b92f35d84f44a8

[Bug target/95255] New: [10/11 Regression] ICE in gen_roundevendf2, at config/i386/i386.md:16328 since r10-2809-gd3b92f35d84f44a8

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95255

            Bug ID: 95255
           Summary: [10/11 Regression] ICE in gen_roundevendf2, at
                    config/i386/i386.md:16328 since
                    r10-2809-gd3b92f35d84f44a8
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: uros at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-linux-gnu

I see the following ICE:

$ gcc
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/sse4_1-round-roundeven-1.c
-mfpmath=both
during RTL pass: expand
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/sse4_1-round-roundeven-1.c:
In function ‘f1’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/sse4_1-round-roundeven-1.c:7:10:
internal compiler error: in gen_roundevendf2, at config/i386/i386.md:17137
    7 |   return __builtin_roundeven (x);
      |          ^~~~~~~~~~~~~~~~~~~~~~~
0x816eab gen_roundevendf2(rtx_def*, rtx_def*)
        /home/marxin/Programming/gcc/gcc/config/i386/i386.md:17137
0xd2b148 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
        /home/marxin/Programming/gcc/gcc/optabs.c:7479
0xd2b148 expand_insn(insn_code, unsigned int, expand_operand*)
        /home/marxin/Programming/gcc/gcc/optabs.c:7510
0xbdd6c4 expand_direct_optab_fn
        /home/marxin/Programming/gcc/gcc/internal-fn.c:2959
0x9a60ee expand_call_stmt
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:2627
0x9a60ee expand_gimple_stmt_1
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:3682
0x9a60ee expand_gimple_stmt
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:3847
0x9abac1 expand_gimple_basic_block
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:5887
0x9ad6b7 execute
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:6571
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/95255] [10/11 Regression] ICE in gen_roundevendf2, at config/i386/i386.md:16328 since r10-2809-gd3b92f35d84f44a8

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95255

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
            Version|11.0                        |10.1.0
   Target Milestone|---                         |10.2
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2020-05-21

[Bug target/95255] [10/11 Regression] ICE in gen_roundevendf2, at config/i386/i386.md:16328 since r10-2809-gd3b92f35d84f44a8

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95255

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Please post your compile flags.

[Bug target/95255] [10/11 Regression] ICE in gen_roundevendf2, at config/i386/i386.md:16328 since r10-2809-gd3b92f35d84f44a8

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95255

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
> $ gcc
> /home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/sse4_1-round-
> roundeven-1.c -mfpmath=both

They are here.

[Bug target/95255] [10/11 Regression] ICE in gen_roundevendf2, at config/i386/i386.md:16328 since r10-2809-gd3b92f35d84f44a8

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95255

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2

[Bug target/95255] [10/11 Regression] ICE in gen_roundevendf2, at config/i386/i386.md:16328 since r10-2809-gd3b92f35d84f44a8

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95255

Uroš Bizjak <ubizjak at gmail dot com> changed:

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

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 48580
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48580&action=edit
patch in testing.

[Bug target/95255] [10/11 Regression] ICE in gen_roundevendf2, at config/i386/i386.md:16328 since r10-2809-gd3b92f35d84f44a8

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95255

--- Comment #4 from CVS 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:1a030003858d853f564ed354f1cb579c03db17ef

commit r11-575-g1a030003858d853f564ed354f1cb579c03db17ef
Author: Uros Bizjak <ubizjak@gmail.com>
Date:   Fri May 22 18:02:49 2020 +0200

    i386: Fix <rounding_insn><mode>2 expander [PR95255]

    2020-05-22  Uroš Bizjak  <ubizjak@gmail.com>

    gcc/ChangeLog:
            PR target/95255
            * config/i386/i386.md (<rounding_insn><mode>2): Do not try to
            expand non-sse4 ROUND_ROUNDEVEN rounding via SSE support routines.

    gcc/testsuite/ChangeLog:
            PR target/95255
            * gcc.target/i386/pr95255.c: New test.

[Bug target/95255] [10/11 Regression] ICE in gen_roundevendf2, at config/i386/i386.md:16328 since r10-2809-gd3b92f35d84f44a8

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95255

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Uros Bizjak <uros@gcc.gnu.org>:

https://gcc.gnu.org/g:217a22416575c638940b25ea5937ff09d40cf808

commit r10-8178-g217a22416575c638940b25ea5937ff09d40cf808
Author: Uros Bizjak <ubizjak@gmail.com>
Date:   Sun May 24 18:01:08 2020 +0200

    i386: Fix <rounding_insn><mode>2 expander [PR95255]

    2020-05-24  Uroš Bizjak  <ubizjak@gmail.com>

    gcc/ChangeLog:
            PR target/95255
            * config/i386/i386.md (<rounding_insn><mode>2): Do not try to
            expand non-sse4 ROUND_ROUNDEVEN rounding via SSE support routines.

    gcc/testsuite/ChangeLog:
            PR target/95255
            * gcc.target/i386/pr95255.c: New test.

[Bug target/95255] [10/11 Regression] ICE in gen_roundevendf2, at config/i386/i386.md:16328 since r10-2809-gd3b92f35d84f44a8

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95255

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 for gcc-10.2+.