https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113146
Bug ID: 113146
Summary: [14 regression] ICE when building dialog
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
CC: tnfchris at gcc dot gnu.org
Target Milestone: ---
Created attachment 56946
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56946&action=edit
progressbox.i.xz
```
$ gcc -c progressbox.i -march=znver2 -O3
progressbox.c: In function ‘dlg_progressbox’:
progressbox.c:373:1: error: PHI node with wrong VUSE on edge from BB 32
.MEM_393 = PHI <.MEM_292(32)>
expected .MEM_364
progressbox.c:373:1: error: multiple virtual PHI nodes in BB 123
.MEM_314 = PHI <.MEM_364(33)>
.MEM_392 = PHI <.MEM_292(33)>
progressbox.c:373:1: error: PHI node with wrong VUSE on edge from BB 123
.MEM_317 = PHI <.MEM_392(123), .MEM_393(128)>
expected .MEM_314
during GIMPLE pass: vect
progressbox.c:373:1: internal compiler error: verify_ssa failed
0x556bfe5c3a88 verify_ssa(bool, bool)
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/tree-ssa.cc:1203
0x556bfe1c5a9d execute_function_todo
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/passes.cc:2095
0x556bfe1c5f30 execute_todo
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/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://bugs.gentoo.org/> for instructions.
```
```
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/14/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-14.0.0.9999/work/gcc-14.0.0.9999/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/14
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/14/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/x86_64-pc-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,df
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo 14.0.0 p,
commit 2250dc0cc8c46999ad1c1d79b9aeed9056459bb6' --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 --disable-libada
--disable-cet --disable-systemtap --disable-valgrind-annotations
--disable-vtable-verify --disable-libvtv --with-zstd --without-isl
--enable-default-pie --enable-host-pie --disable-host-bind-now
--enable-default-ssp
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231225 (experimental)
0beeddd6b1b1cb41104c4df925323e8fc0437ba8 (Gentoo 14.0.0 p, commit
2250dc0cc8c46999ad1c1d79b9aeed9056459bb6)
```
'gcc -c -O3 -march=znver2 progressbox.i' is enough to repro.
