https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114070
Bug ID: 114070
Summary: [12/13/13 regression] ICE when building git-2.43.2
with -mcpu=niagara4 -fno-vect-cost-model
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
Target Milestone: ---
Created attachment 57506
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57506&action=edit
merge-tree.i.xz
I'm not sure if this is an rtl-optimization bug or a target bug.
```
sparc64-unknown-linux-gnu-gcc -o builtin/merge-tree.o -c -MF
builtin/.depend/merge-tree.o.d -MQ builtin/merge-tree.o -MMD -MP -O3
-mcpu=niagara4 -pipe -fno-semantic-interposition -fno-vect-cost-model
-U_FORTIFY_SOURCE -fno-hardened -I. -DHAVE_SYSINFO -DGIT_HOST_CPU="\"sparc64\""
-DUSE_LIBPCRE2 -DHAVE_ALLOCA_H -DUSE_CURL_FOR_IMAP_SEND -DSUPPORTS_SIMPLE_IPC
-DSHA1_BLK -DSHA256_BLK -DHAVE_PATHS_H -DHAVE_DEV_TTY -DHAVE_CLOCK_GETTIME
-DHAVE_CLOCK_MONOTONIC -DHAVE_SYNC_FILE_RANGE -DHAVE_GETDELIM
'-DPROCFS_EXECUTABLE_PATH="/proc/self/exe"' -DFREAD_READS_DIRECTORIES
-DNO_STRLCPY -DSHELL_PATH='"/bin/sh"' builtin/merge-tree.c
during RTL pass: expand
builtin/merge-tree.c: In function ‘threeway_callback’:
builtin/merge-tree.c:327:12: internal compiler error: in do_store_flag, at
expr.cc:13547
327 | static int threeway_callback(int n UNUSED, unsigned long mask,
| ^~~~~~~~~~~~~~~~~
rm -f xdiff/lib.a && sparc64-unknown-linux-gnu-ar rcs xdiff/lib.a
xdiff/xdiffi.o xdiff/xemit.o xdiff/xhistogram.o xdiff/xmerge.o
xdiff/xpatience.o xdiff/xprepare.o xdiff/xutils.o
0x1000072aa17 do_store_flag
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/expr.cc:13547
0x1000072b103 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/expr.cc:10684
0x1000073c15f expand_expr_real_gassign(gassign*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/expr.cc:11096
0x10000736923 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/expr.cc:11277
0x100009093af expand_normal(tree_node*)
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/expr.h:322
0x100009093af expand_vec_cond_optab_fn
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/internal-fn.cc:3081
0x1000091dae3 expand_internal_call(internal_fn, gcall*)
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/internal-fn.cc:4913
0x1000091dae3 expand_internal_call(gcall*)
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/internal-fn.cc:4921
0x1000054ae5b expand_call_stmt
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/cfgexpand.cc:2771
0x1000054ae5b expand_gimple_stmt_1
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/cfgexpand.cc:3932
0x1000054ae5b expand_gimple_stmt
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/cfgexpand.cc:4077
0x10000554c5f expand_gimple_basic_block
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/cfgexpand.cc:6133
0x100005578df execute
/usr/src/debug/sys-devel/gcc-14.0.9999/gcc-14.0.9999/gcc/cfgexpand.cc:6872
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.
```
```
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/sparc64-unknown-linux-gnu/14/lto-wrapper
Target: sparc64-unknown-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-14.0.9999/work/gcc-14.0.9999/configure
--host=sparc64-unknown-linux-gnu --build=sparc64-unknown-linux-gnu
--prefix=/usr --bindir=/usr/sparc64-unknown-linux-gnu/gcc-bin/14
--includedir=/usr/lib/gcc/sparc64-unknown-linux-gnu/14/include
--datadir=/usr/share/gcc-data/sparc64-unknown-linux-gnu/14
--mandir=/usr/share/gcc-data/sparc64-unknown-linux-gnu/14/man
--infodir=/usr/share/gcc-data/sparc64-unknown-linux-gnu/14/info
--with-gxx-include-dir=/usr/lib/gcc/sparc64-unknown-linux-gnu/14/include/g++-v14
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/sparc64-unknown-linux-gnu/14/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 14.0.9999 p,
commit e54a7fbca63053b5753fd9ba543c27ef392d3084' --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-targets=all --enable-libgomp
--disable-libssp --disable-libada --disable-cet --disable-systemtap
--disable-valgrind-annotations --disable-vtable-verify --disable-libvtv
--without-zstd --without-isl --enable-default-pie --enable-host-pie
--disable-host-bind-now --enable-default-ssp --disable-fixincludes
--with-build-config=bootstrap-O3
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.1 20240223 (experimental)
77de8b722db811e0d95af503552cd2acad8deaad (Gentoo 14.0.9999 p, commit
e54a7fbca63053b5753fd9ba543c27ef392d3084)
```
I can reproduce with just 'gcc -c merge-tree.i -O2 -mcpu=niagara4
-fno-vect-cost-model'.
