https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116348
Bug ID: 116348
Summary: [15 regression] ICE when building gavl-1.4.0 with -O3
-march=znver4
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
Target Milestone: ---
Created attachment 58913
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58913&action=edit
scale_generic_c.i
The original reporter, tdr, hit this with '-O3 -march=sapphirerapids
-mprefer-vector-width=512', but it shows up nicely with just '-O3
-march=znver4'.
```
$ gcc x.i -O3 -march=znver4
during GIMPLE pass: vect
In file included from
/var/tmp/portage/media-libs/gavl-1.4.0-r3/work/gavl-1.4.0/gavl/c/scale_generic_c.c:571:
/var/tmp/portage/media-libs/gavl-1.4.0-r3/work/gavl-1.4.0/gavl/c/scale_generic_y.h:
In function ‘scale_uint16_x_4_y_generic_c’:
/var/tmp/portage/media-libs/gavl-1.4.0-r3/work/gavl-1.4.0/gavl/c/scale_generic_y.h:21:14:
internal compiler error: in vect_transform_stmt, at tree-vect-stmts.cc:13396
0x55eb07f84101 internal_error(char const*, ...)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/diagnostic-global-context.cc:491
0x55eb07f8429c fancy_abort(char const*, int, char const*)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/diagnostic.cc:1772
0x55eb0702d74a vect_transform_stmt(vec_info*, _stmt_vec_info*,
gimple_stmt_iterator*, _slp_tree*, _slp_instance*)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vect-stmts.cc:13396
0x55eb08a66b4f vect_schedule_slp_node
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vect-slp.cc:9970
0x55eb08a66b4f vect_schedule_slp_node
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vect-slp.cc:9749
0x55eb08a65e2f vect_schedule_scc
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vect-slp.cc:10208
0x55eb08a65d7b vect_schedule_scc
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vect-slp.cc:10189
0x55eb0872a10b vect_schedule_slp(vec_info*, vec<_slp_instance*, va_heap,
vl_ptr> const&)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vect-slp.cc:10353
0x55eb0888986c vect_transform_loop(_loop_vec_info*, gimple*)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vect-loop.cc:12404
0x55eb08b21ffd vect_transform_loops
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vectorizer.cc:1007
0x55eb08a8c26a try_vectorize_loop_1
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vectorizer.cc:1153
0x55eb08a8c26a try_vectorize_loop
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vectorizer.cc:1183
0x55eb087b7625 execute
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-vectorizer.cc:1299
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/x86_64-pc-linux-gnu/15/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-15.0.9999/work/gcc-15.0.9999/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/15
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/15/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/15/python
--enable-objc-gc --enable-languages=c,c++,d,go,objc,obj-c++,fortran,ada,rust
--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
743578d0de067c87f590c9886f14961bb429c1f4' --with-gcc-major-version-only
--enable-libstdcxx-time --enable-lto --disable-libstdcxx-pch --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--enable-multilib --with-multilib-list=m32,m64 --disable-fixed-point
--enable-targets=all --enable-libgomp --disable-libssp --enable-libada
--disable-cet --disable-systemtap --enable-valgrind-annotations
--disable-vtable-verify --disable-libvtv --with-zstd --with-isl
--disable-isl-version-check --enable-default-pie --enable-host-pie
--enable-host-bind-now --enable-default-ssp --disable-fixincludes
--with-build-config='bootstrap-O3 bootstrap-lto'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20240812 (experimental)
7bf4cd48d4494ba65680578e9c7ae9a1b809aeaf (Gentoo Hardened 15.0.9999 p, commit
743578d0de067c87f590c9886f14961bb429c1f4)
```
