[Bug target/112532] New: [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4

[Bug target/112532] New: [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532

            Bug ID: 112532
           Summary: [14 Regression] ICE: in extract_insn, at recog.cc:2804
                    (unrecognizable insn: vec_duplicate:V4HI) with -O
                    -msse4
           Product: gcc
           Version: 14.0
            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

Created attachment 56586
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56586&action=edit
reduced testcase

Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -msse4 testcase.c 
testcase.c: In function 'foo0':
testcase.c:26:1: error: unrecognizable insn:
   26 | }
      | ^
(insn 58 56 59 2 (set (reg:V4HI 20 xmm0 [129])
        (vec_duplicate:V4HI (reg:HI 22 xmm2 [123]))) "testcase.c":16:21 -1
     (nil))
during RTL pass: split2
testcase.c:26:1: internal compiler error: in extract_insn, at recog.cc:2804
0x7f5c79 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /repo/gcc-trunk/gcc/rtl-error.cc:108
0x7f5cf6 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        /repo/gcc-trunk/gcc/rtl-error.cc:116
0x7e4b65 extract_insn(rtx_insn*)
        /repo/gcc-trunk/gcc/recog.cc:2804
0x14168c4 extract_insn_cached(rtx_insn*)
        /repo/gcc-trunk/gcc/recog.cc:2693
0x10af2a4 cleanup_subreg_operands(rtx_insn*)
        /repo/gcc-trunk/gcc/final.cc:3054
0x1414088 split_insn
        /repo/gcc-trunk/gcc/recog.cc:3419
0x141ad65 split_all_insns()
        /repo/gcc-trunk/gcc/recog.cc:3487
0x141ae88 execute
        /repo/gcc-trunk/gcc/recog.cc:4411
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-r14-5443-20231114122339-gb9fd8399ec0-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/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-r14-5443-20231114122339-gb9fd8399ec0-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231114 (experimental) (GCC)

[Bug target/112532] [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532

Sam James <sjames at gcc dot gnu.org> changed:

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

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
Reproduced on trunk but r14-5371-g93e92b2e5d6866 is okay, will bisect

[Bug target/112532] [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4 since r14-5388-g2794d510b979be

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532

Sam James <sjames at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |crazylht at gmail dot com
            Summary|[14 Regression] ICE: in     |[14 Regression] ICE: in
                   |extract_insn, at            |extract_insn, at
                   |recog.cc:2804               |recog.cc:2804
                   |(unrecognizable insn:       |(unrecognizable insn:
                   |vec_duplicate:V4HI) with -O |vec_duplicate:V4HI) with -O
                   |-msse4                      |-msse4 since
                   |                            |r14-5388-g2794d510b979be

--- Comment #2 from Sam James <sjames at gcc dot gnu.org> ---
2794d510b979be76b0fee4521d1a454332176007 is the first bad commit
commit 2794d510b979be76b0fee4521d1a454332176007
Author: liuhongt <hongtao.liu@intel.com>
Date:   Wed Nov 8 14:52:01 2023 +0800

    Support vec_set/vec_extract/vec_init for V4HF/V2HF.

i.e. r14-5388-g2794d510b979be

[Bug target/112532] [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4 since r14-5388-g2794d510b979be

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532

--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> ---
mine.

[Bug target/112532] [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4 since r14-5388-g2794d510b979be

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532

Sam James <sjames at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-11-15
           Assignee|unassigned at gcc dot gnu.org      |liuhongt at gcc dot gnu.org

--- Comment #4 from Sam James <sjames at gcc dot gnu.org> ---
btw: if you change your email on bugzilla to liuhongt@gcc.gnu.org, you'll get
more permissions to edit bugs.

[Bug target/112532] [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4 since r14-5388-g2794d510b979be

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |14.0

[Bug target/112532] [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4 since r14-5388-g2794d510b979be

[liuhongt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532

--- Comment #5 from liuhongt at gcc dot gnu.org ---
(In reply to Sam James from comment #4)
> btw: if you change your email on bugzilla to liuhongt@gcc.gnu.org, you'll
> get more permissions to edit bugs.

Ok, thanks.

[Bug target/112532] [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4 since r14-5388-g2794d510b979be

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>:

https://gcc.gnu.org/g:e36d5f424a0dcb984620a172c73da989f215dc42

commit r14-5525-ge36d5f424a0dcb984620a172c73da989f215dc42
Author: liuhongt <hongtao.liu@intel.com>
Date:   Wed Nov 15 16:50:44 2023 +0800

    Fix ICE of unrecognizable insn.

    The new added splitter will generate

    (insn 58 56 59 2 (set (reg:V4HI 20 xmm0 [129])
            (vec_duplicate:V4HI (reg:HI 22 xmm2 [123]))) "testcase.c":16:21 -1

    But we only have

    (define_insn "*vec_dupv4hi"
      [(set (match_operand:V4HI 0 "register_operand" "=y,Yw")
            (vec_duplicate:V4HI
              (truncate:HI
                (match_operand:SI 1 "register_operand" "0,Yw"))))]

    The patch add patterns for V4HI and V2HI.

    gcc/ChangeLog:

            PR target/112532
            * config/i386/mmx.md (*vec_dup<mode>): Extend for V4HI and
            V2HI.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr112532.c: New test.

[Bug target/112532] [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn: vec_duplicate:V4HI) with -O -msse4 since r14-5388-g2794d510b979be

[liuhongt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532

liuhongt at gcc dot gnu.org changed:

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

--- Comment #7 from liuhongt at gcc dot gnu.org ---
Fixed in GCC14.