[Bug middle-end/114156] New: during GIMPLE pass: bitintlower ICE: in lower_stmt, at gimple-lower-bitint.cc:5335 with -O -m32 and _BitInt(128) __builtin_memmove()

[Bug middle-end/114156] New: during GIMPLE pass: bitintlower ICE: in lower_stmt, at gimple-lower-bitint.cc:5335 with -O -m32 and _BitInt(128) __builtin_memmove()

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114156

            Bug ID: 114156
           Summary: during GIMPLE pass: bitintlower ICE: in lower_stmt, at
                    gimple-lower-bitint.cc:5335 with -O -m32 and
                    _BitInt(128) __builtin_memmove()
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
                CC: jakub at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: i686-pc-linux-gnu

Created attachment 57569
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57569&action=edit
reduced testcase

This happens even after the PR113988 fix.

Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -m32 testcase.c
during GIMPLE pass: bitintlower
testcase.c: In function 'foo':
testcase.c:4:1: internal compiler error: in lower_stmt, at
gimple-lower-bitint.cc:5335
    4 | foo(void)
      | ^~~
0xd79caa lower_stmt
        /repo/gcc-trunk/gcc/gimple-lower-bitint.cc:5335
0x269e129 gimple_lower_bitint
        /repo/gcc-trunk/gcc/gimple-lower-bitint.cc:6759
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-r14-9216-20240228150317-g5c01ede02a1-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.1/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-r14-9216-20240228150317-g5c01ede02a1-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.1 20240228 (experimental) (GCC)

[Bug middle-end/114156] during GIMPLE pass: bitintlower ICE: in lower_stmt, at gimple-lower-bitint.cc:5335 with -O -m32 and _BitInt(128) __builtin_memmove()

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114156

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
     Ever confirmed|0                           |1
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org
   Last reconfirmed|                            |2024-02-29

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 57579
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57579&action=edit
gcc14-pr114156.patch

Untested fix.

[Bug middle-end/114156] during GIMPLE pass: bitintlower ICE: in lower_stmt, at gimple-lower-bitint.cc:5335 with -O -m32 and _BitInt(128) __builtin_memmove()

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114156

--- Comment #2 from GCC 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:d3d0fcb652748191714e4c0b2541e977a7fc7bd7

commit r14-9248-gd3d0fcb652748191714e4c0b2541e977a7fc7bd7
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Fri Mar 1 11:04:51 2024 +0100

    bitint: Handle VCE from large/huge _BitInt SSA_NAME from load [PR114156]

    When adding checks in which case not to merge a VIEW_CONVERT_EXPR from
    large/huge _BitInt to vector/complex etc., I missed the case of loads.
    Those are handled differently later.
    Anyway, I think the load case is something we can handle just fine,
    so the following patch does that instead of preventing the merging
    gimple_lower_bitint; we'd then copy from memory to memory and and do the
    vce only on the second one, it is just better to vce the first one.

    2024-03-01  Jakub Jelinek  <jakub@redhat.com>

            PR middle-end/114156
            * gimple-lower-bitint.cc (bitint_large_huge::lower_stmt): Allow
            rhs1 of a VCE to have no underlying variable if it is a load and
            handle that case.

            * gcc.dg/bitint-96.c: New test.

[Bug middle-end/114156] during GIMPLE pass: bitintlower ICE: in lower_stmt, at gimple-lower-bitint.cc:5335 with -O -m32 and _BitInt(128) __builtin_memmove()

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114156

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

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

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.