[Bug target/97792] New: ICE in extract_insn, at recog.c:2315

[Bug target/97792] New: ICE in extract_insn, at recog.c:2315

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97792

            Bug ID: 97792
           Summary: ICE in extract_insn, at recog.c:2315
           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: ktkachov at gcc dot gnu.org, rearnsha at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-linux
            Target: arm-linux-gnueabi

The following fails:

$ gcc
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/ubsan/overflow-vec-2.c
-mcpu=iwmmxt -c
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/ubsan/overflow-vec-2.c:
In function ‘main’:
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/ubsan/overflow-vec-2.c:144:1:
error: unrecognizable insn:
  144 | }
      | ^
(insn 1590 1589 1591 2 (set (reg:V8QI 353 [ _337 ])
        (mult:V8QI (reg:V8QI 351 [ _335 ])
            (reg:V8QI 352 [ _336 ])))
"/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/ubsan/overflow-vec-2.c":110:9
-1
     (nil))
during RTL pass: vregs
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/ubsan/overflow-vec-2.c:144:1:
internal compiler error: in extract_insn, at recog.c:2315
0x5f02f7 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-arm/build/gcc/rtl-error.c:108
0x5f0313 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-arm/build/gcc/rtl-error.c:116
0x5ef7c8 extract_insn(rtx_insn*)
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-arm/build/gcc/recog.c:2315
0x87e5ff instantiate_virtual_regs_in_insn
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-arm/build/gcc/function.c:1609
0x87e5ff instantiate_virtual_regs
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-arm/build/gcc/function.c:1979
0x87e5ff execute
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-arm/build/gcc/function.c:2028
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/97792] ICE in extract_insn, at recog.c:2315

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97792

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2020-11-11
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Target Milestone|---                         |11.0

[Bug target/97792] ICE in extract_insn, at recog.c:2315

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97792

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.0                        |11.2

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11.1 has been released, retargeting bugs to GCC 11.2.

[Bug target/97792] ICE in extract_insn, at recog.c:2315

[acoplan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97792

Alex Coplan <acoplan at gcc dot gnu.org> changed:

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

--- Comment #2 from Alex Coplan <acoplan at gcc dot gnu.org> ---
I can't reproduce this on trunk.

[Bug target/97792] ICE in extract_insn, at recog.c:2315

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97792

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

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

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Yes, it's really gone.