[Bug target/104502] New: [12 Regression] ICE: in extract_constrain_insn, at recog.cc:2670: insn does not satisfy its constraints with -O -flive-range-shrinkage -march=barcelona -fstack-protector-all -mavx512f

[Bug target/104502] New: [12 Regression] ICE: in extract_constrain_insn, at recog.cc:2670: insn does not satisfy its constraints with -O -flive-range-shrinkage -march=barcelona -fstack-protector-all -mavx512f

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104502

            Bug ID: 104502
           Summary: [12 Regression] ICE: in extract_constrain_insn, at
                    recog.cc:2670: insn does not satisfy its constraints
                    with -O -flive-range-shrinkage -march=barcelona
                    -fstack-protector-all -mavx512f
           Product: gcc
           Version: 12.0
            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 52415
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52415&action=edit
reduced testcase

Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -flive-range-shrinkage -march=barcelona
-fstack-protector-all -mavx512f testcase.c
testcase.c: In function 'foo':
testcase.c:27:1: error: insn does not satisfy its constraints:
   27 | }
      | ^
(insn 152 19 153 2 (set (reg:V2DF 44 xmm8 [150])
        (vec_duplicate:V2DF (reg:DF 52 xmm16 [orig:83 d.0_2 ] [83])))
"testcase.c":18:23 5856 {vec_dupv2df}
     (nil))
during RTL pass: pro_and_epilogue
testcase.c:27:1: internal compiler error: in extract_constrain_insn, at
recog.cc:2670
0x7682a5 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /repo/gcc-trunk/gcc/rtl-error.cc:108
0x76832b _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        /repo/gcc-trunk/gcc/rtl-error.cc:118
0x757252 extract_constrain_insn(rtx_insn*)
        /repo/gcc-trunk/gcc/recog.cc:2670
0x12e0dcb copyprop_hardreg_forward_1
        /repo/gcc-trunk/gcc/regcprop.cc:826
0x12e2001 copyprop_hardreg_forward_bb_without_debug_insn(basic_block_def*)
        /repo/gcc-trunk/gcc/regcprop.cc:1220
0x134cba7 prepare_shrink_wrap
        /repo/gcc-trunk/gcc/shrink-wrap.cc:451
0x134cba7 try_shrink_wrapping(edge_def**, rtx_insn*)
        /repo/gcc-trunk/gcc/shrink-wrap.cc:674
0x101009b thread_prologue_and_epilogue_insns()
        /repo/gcc-trunk/gcc/function.cc:6047
0x1010972 rest_of_handle_thread_prologue_and_epilogue
        /repo/gcc-trunk/gcc/function.cc:6532
0x1010972 execute
        /repo/gcc-trunk/gcc/function.cc:6608
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-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
--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-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220211 (experimental) (GCC)

[Bug target/104502] [12 Regression] ICE: in extract_constrain_insn, at recog.cc:2670: insn does not satisfy its constraints with -O -flive-range-shrinkage -march=barcelona -fstack-protector-all -mavx512f

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104502

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

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

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r12-2666-g29f0e955c97da002b5adb4e8c9dfd2ea9709e207

[Bug target/104502] [12 Regression] ICE: in extract_constrain_insn, at recog.cc:2670: insn does not satisfy its constraints with -O -flive-range-shrinkage -march=barcelona -fstack-protector-all -mavx512f

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104502

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

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

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 52418
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52418&action=edit
gcc12-pr104502.patch

Untested fix.

[Bug target/104502] [12 Regression] ICE: in extract_constrain_insn, at recog.cc:2670: insn does not satisfy its constraints with -O -flive-range-shrinkage -march=barcelona -fstack-protector-all -mavx512f

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104502

--- 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:0538d42cdd68f6b65d72ed7768f1d00ba44f8631

commit r12-7212-g0538d42cdd68f6b65d72ed7768f1d00ba44f8631
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Sat Feb 12 11:17:41 2022 +0100

    i386: Fix up cvtsd2ss splitter [PR104502]

    The following testcase ICEs, because AVX512F is enabled, AVX512VL is not,
    and the cvtsd2ss insn has %xmm0-15 as output operand and %xmm16-31 as
    input operand.  For output operand %xmm16+ the splitter just gives up
    in such case, but for such input it just emits vmovddup which requires
    AVX512VL if either operand is EXT_REX_SSE_REG_P (when it is 128-bit).

    The following patch fixes it by treating that case like the pre-SSE3
    output != input case - move the input to output and do everything on
    the output reg which is known to be < %xmm16.

    2022-02-12  Jakub Jelinek  <jakub@redhat.com>

            PR target/104502
            * config/i386/i386.md (cvtsd2ss splitter): If operands[1] is xmm16+
            and AVX512VL isn't available, move operands[1] to operands[0]
first.

            * gcc.target/i386/pr104502.c: New test.

[Bug target/104502] [12 Regression] ICE: in extract_constrain_insn, at recog.cc:2670: insn does not satisfy its constraints with -O -flive-range-shrinkage -march=barcelona -fstack-protector-all -mavx512f

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104502

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.

[Bug target/104502] [12 Regression] ICE: in extract_constrain_insn, at recog.cc:2670: insn does not satisfy its constraints with -O -flive-range-shrinkage -march=barcelona -fstack-protector-all -mavx512f

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104502

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:615419d60327a0712d9a54d7993bb2d2988e461a

commit r11-9603-g615419d60327a0712d9a54d7993bb2d2988e461a
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Sat Feb 12 11:17:41 2022 +0100

    i386: Fix up cvtsd2ss splitter [PR104502]

    The following testcase ICEs, because AVX512F is enabled, AVX512VL is not,
    and the cvtsd2ss insn has %xmm0-15 as output operand and %xmm16-31 as
    input operand.  For output operand %xmm16+ the splitter just gives up
    in such case, but for such input it just emits vmovddup which requires
    AVX512VL if either operand is EXT_REX_SSE_REG_P (when it is 128-bit).

    The following patch fixes it by treating that case like the pre-SSE3
    output != input case - move the input to output and do everything on
    the output reg which is known to be < %xmm16.

    2022-02-12  Jakub Jelinek  <jakub@redhat.com>

            PR target/104502
            * config/i386/i386.md (cvtsd2ss splitter): If operands[1] is xmm16+
            and AVX512VL isn't available, move operands[1] to operands[0]
first.

            * gcc.target/i386/pr104502.c: New test.

    (cherry picked from commit 0538d42cdd68f6b65d72ed7768f1d00ba44f8631)

[Bug target/104502] [12 Regression] ICE: in extract_constrain_insn, at recog.cc:2670: insn does not satisfy its constraints with -O -flive-range-shrinkage -march=barcelona -fstack-protector-all -mavx512f

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104502

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:b49c185ca5d44b03c4e374a81d7c9ea82fed2bfd

commit r10-10678-gb49c185ca5d44b03c4e374a81d7c9ea82fed2bfd
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Sat Feb 12 11:17:41 2022 +0100

    i386: Fix up cvtsd2ss splitter [PR104502]

    The following testcase ICEs, because AVX512F is enabled, AVX512VL is not,
    and the cvtsd2ss insn has %xmm0-15 as output operand and %xmm16-31 as
    input operand.  For output operand %xmm16+ the splitter just gives up
    in such case, but for such input it just emits vmovddup which requires
    AVX512VL if either operand is EXT_REX_SSE_REG_P (when it is 128-bit).

    The following patch fixes it by treating that case like the pre-SSE3
    output != input case - move the input to output and do everything on
    the output reg which is known to be < %xmm16.

    2022-02-12  Jakub Jelinek  <jakub@redhat.com>

            PR target/104502
            * config/i386/i386.md (cvtsd2ss splitter): If operands[1] is xmm16+
            and AVX512VL isn't available, move operands[1] to operands[0]
first.

            * gcc.target/i386/pr104502.c: New test.

    (cherry picked from commit 0538d42cdd68f6b65d72ed7768f1d00ba44f8631)

[Bug target/104502] [12 Regression] ICE: in extract_constrain_insn, at recog.cc:2670: insn does not satisfy its constraints with -O -flive-range-shrinkage -march=barcelona -fstack-protector-all -mavx512f

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104502

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:cb412e0e881adcc5440ed37a8a415a77fe3df980

commit r9-10126-gcb412e0e881adcc5440ed37a8a415a77fe3df980
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Sat Feb 12 11:17:41 2022 +0100

    i386: Fix up cvtsd2ss splitter [PR104502]

    The following testcase ICEs, because AVX512F is enabled, AVX512VL is not,
    and the cvtsd2ss insn has %xmm0-15 as output operand and %xmm16-31 as
    input operand.  For output operand %xmm16+ the splitter just gives up
    in such case, but for such input it just emits vmovddup which requires
    AVX512VL if either operand is EXT_REX_SSE_REG_P (when it is 128-bit).

    The following patch fixes it by treating that case like the pre-SSE3
    output != input case - move the input to output and do everything on
    the output reg which is known to be < %xmm16.

    2022-02-12  Jakub Jelinek  <jakub@redhat.com>

            PR target/104502
            * config/i386/i386.md (cvtsd2ss splitter): If operands[1] is xmm16+
            and AVX512VL isn't available, move operands[1] to operands[0]
first.

            * gcc.target/i386/pr104502.c: New test.

    (cherry picked from commit 0538d42cdd68f6b65d72ed7768f1d00ba44f8631)