[Bug tree-optimization/113330] New: ICE: verify_gimple failed: conversion of register to a different size in 'view_convert_expr' with -O -fstack-check=generic and _BitInt()

[Bug tree-optimization/113330] New: ICE: verify_gimple failed: conversion of register to a different size in 'view_convert_expr' with -O -fstack-check=generic and _BitInt()

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113330

            Bug ID: 113330
           Summary: ICE: verify_gimple failed: conversion of register to a
                    different size in 'view_convert_expr' with -O
                    -fstack-check=generic and _BitInt()
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          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: x86_64-pc-linux-gnu

Created attachment 57036
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57036&action=edit
reduced testcase

Maybe related to PR113297

Compiler output:
$ x86_64-pc-linux-gnu-gcc -O --param=large-stack-frame=131072
-fstack-check=generic --param=sccvn-max-alias-queries-per-access=0 testcase.c 
testcase.c: In function 'foo':
testcase.c:15:1: error: conversion of register to a different size in
'view_convert_expr'
   15 | }
      | ^
VIEW_CONVERT_EXPR<_BitInt(65535)>(SR.6_11);

_4 = VIEW_CONVERT_EXPR<_BitInt(65535)>(SR.6_11);
during GIMPLE pass: esra
testcase.c:15:1: internal compiler error: verify_gimple failed
0x1557dbd verify_gimple_in_cfg(function*, bool, bool)
        /repo/gcc-trunk/gcc/tree-cfg.cc:5666
0x13c7774 execute_function_todo
        /repo/gcc-trunk/gcc/passes.cc:2088
0x13c7cce execute_todo
        /repo/gcc-trunk/gcc/passes.cc:2142
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-r14-7127-20240110200826-g2105c49bbe8-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-r14-7127-20240110200826-g2105c49bbe8-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20240111 (experimental) (GCC)

[Bug tree-optimization/113330] ICE: verify_gimple failed: conversion of register to a different size in 'view_convert_expr' with -O -fstack-check=generic and _BitInt()

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113330

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

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

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This is the invalid build_bitint_type (65536, 0) case I was talking about in
https://gcc.gnu.org/pipermail/gcc-patches/2024-January/642423.html
but not really sure where it should punt on that.

[Bug tree-optimization/113330] ICE: verify_gimple failed: conversion of register to a different size in 'view_convert_expr' with -O -fstack-check=generic and _BitInt()

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113330

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|                            |2024-01-11

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 57044
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57044&action=edit
gcc14-pr113330.patch

Untested fix.

[Bug tree-optimization/113330] ICE: verify_gimple failed: conversion of register to a different size in 'view_convert_expr' with -O -fstack-check=generic and _BitInt()

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113330

--- Comment #3 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:4c08f0dde4c2a48931a61b84a00d5c16f4b0e291

commit r14-7181-g4c08f0dde4c2a48931a61b84a00d5c16f4b0e291
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Fri Jan 12 11:22:04 2024 +0100

    sra: Punt for too large _BitInt accesses [PR113330]

    This is the case I was talking about in
    https://gcc.gnu.org/pipermail/gcc-patches/2024-January/642423.html
    and Zdenek kindly found a testcase for it.
    We can only create BITINT_TYPE with precision at most 65535, not 65536,
    so need to punt if we'd want to create it.

    2024-01-12  Jakub Jelinek  <jakub@redhat.com>

            PR tree-optimization/113330
            * tree-sra.cc (create_access): Punt for BITINT_TYPE accesses with
            too large size.

            * gcc.dg/bitint-69.c: New test.

[Bug tree-optimization/113330] ICE: verify_gimple failed: conversion of register to a different size in 'view_convert_expr' with -O -fstack-check=generic and _BitInt()

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113330

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 tree-optimization/113330] ICE: verify_gimple failed: conversion of register to a different size in 'view_convert_expr' with -O -fstack-check=generic and _BitInt()

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113330

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

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