https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115901
Bug ID: 115901
Summary: [15 regression] ICE when building coreutils-9.5 on
arm64 with -O3 -flto -fno-vect-cost-model
-ftrivial-auto-var-init=zero
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
CC: rsandifo at gcc dot gnu.org
Target Milestone: ---
Created attachment 58644
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58644&action=edit
expr.i.xz
```
$ gcc -o /dev/null expr.i libcoreutils_a-mini-gmp-gnulib.i -O3 -flto
-fno-vect-cost-model -ftrivial-auto-var-init=zero
during RTL pass: late_combine
../../var/tmp/portage/sys-apps/coreutils-9.5/work/coreutils-9.5/lib/mini-gmp.c:
In function ‘mpn_div_qr’:
../../var/tmp/portage/sys-apps/coreutils-9.5/work/coreutils-9.5/lib/mini-gmp.c:1170:1:
internal compiler error: in finalize_new_accesses, at rtl-ssa/changes.cc:584
1170 | }
| ^
0xaaaac7f716bb internal_error(char const*, ...)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/diagnostic-global-context.cc:491
0xaaaac5f02663 fancy_abort(char const*, int, char const*)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/diagnostic.cc:1725
0xaaaac7e0a8d7
rtl_ssa::function_info::finalize_new_accesses(rtl_ssa::insn_change&,
rtl_ssa::insn_info*, hash_set<rtl_ssa::def_info*, false,
default_hash_traits<rtl_ssa::def_info*> >&)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/rtl-ssa/changes.cc:584
0xaaaac7e0aec3
rtl_ssa::function_info::change_insns(array_slice<rtl_ssa::insn_change*>)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/rtl-ssa/changes.cc:834
0xaaaac7d9d497 run
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/late-combine.cc:452
0xaaaac7d9d497 combine_into_uses
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/late-combine.cc:683
0xaaaac7d9dce7 execute
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/late-combine.cc:711
0xaaaac7d9dce7 execute
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/late-combine.cc:760
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
lto-wrapper: fatal error: gcc returned 1 exit status
compilation terminated.
/usr/lib/gcc/aarch64-unknown-linux-gnu/15/../../../../aarch64-unknown-linux-gnu/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status
```
```
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/aarch64-unknown-linux-gnu/15/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-15.0.9999/work/gcc-15.0.9999/configure
--host=aarch64-unknown-linux-gnu --build=aarch64-unknown-linux-gnu
--prefix=/usr --bindir=/usr/aarch64-unknown-linux-gnu/gcc-bin/15
--includedir=/usr/lib/gcc/aarch64-unknown-linux-gnu/15/include
--datadir=/usr/share/gcc-data/aarch64-unknown-linux-gnu/15
--mandir=/usr/share/gcc-data/aarch64-unknown-linux-gnu/15/man
--infodir=/usr/share/gcc-data/aarch64-unknown-linux-gnu/15/info
--with-gxx-include-dir=/usr/lib/gcc/aarch64-unknown-linux-gnu/15/include/g++-v15
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/aarch64-unknown-linux-gnu/15/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--disable-libunwind-exceptions --enable-checking=yes,extra,rtl
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo Hardened
15.0.9999 p, commit b97a75814a0b8969a5669c761dde86dc0d9ee2a1'
--with-gcc-major-version-only --enable-libstdcxx-time --enable-lto
--disable-libstdcxx-pch --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --disable-multilib
--disable-fixed-point --enable-libgomp --disable-libssp --disable-libada
--disable-standard-branch-protection --disable-systemtap
--disable-valgrind-annotations --disable-vtable-verify --disable-libvtv
--with-zstd --without-isl --enable-default-pie --enable-host-pie
--enable-host-bind-now --enable-default-ssp --disable-fixincludes
--with-build-config=bootstrap-O3
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20240712 (experimental)
6e7053a641393211f52c176e540c8922288ab8db (Gentoo Hardened 15.0.9999 p, commit
b97a75814a0b8969a5669c761dde86dc0d9ee2a1)
```
