https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120351
Sam James <sjames at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |target
Keywords| |assemble-failure,
| |wrong-code
--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
Please always include relevant files as attachments. See
https://gcc.gnu.org/bugs/#need.
Anyway, I can reproduce it:
```
$ g++-14 /tmp/a.cxx -O2 -c -mfpu=neon
$ g++-15 /tmp/a.cxx -O2 -c -mfpu=neon
/tmp/ccTgsrnS.s: Assembler messages:
/tmp/ccTgsrnS.s:47: Error: ARM register expected -- `ldrex r1,[s14]'
/tmp/ccTgsrnS.s:49: Error: ARM register expected -- `strex r2,r1,[s14]'
```
```
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/armv7a-unknown-linux-gnueabihf/15/lto-wrapper
Target: armv7a-unknown-linux-gnueabihf
Configured with:
/var/tmp/portage/sys-devel/gcc-15.1.9999/work/gcc-15.1.9999/configure
--host=armv7a-unknown-linux-gnueabihf --build=armv7a-unknown-linux-gnueabihf
--prefix=/usr --bindir=/usr/armv7a-unknown-linux-gnueabihf/gcc-bin/15
--includedir=/usr/lib/gcc/armv7a-unknown-linux-gnueabihf/15/include
--datadir=/usr/share/gcc-data/armv7a-unknown-linux-gnueabihf/15
--mandir=/usr/share/gcc-data/armv7a-unknown-linux-gnueabihf/15/man
--infodir=/usr/share/gcc-data/armv7a-unknown-linux-gnueabihf/15/info
--with-gxx-include-dir=/usr/lib/gcc/armv7a-unknown-linux-gnueabihf/15/include/g++-v15
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/armv7a-unknown-linux-gnueabihf/15/python
--enable-libphobos --enable-objc-gc
--enable-languages=c,c++,d,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 15.1.9999 p, commit
931f2ec7eafda39ea33684e191c9e2e8b4239fdc' --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 --with-float=hard --with-arch=armv7-a
--with-float=hard --with-fpu=vfpv3-d16 --enable-libgomp --disable-libssp
--enable-libada --disable-systemtap --disable-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-gxx-libcxx-include-dir=/usr/include/c++/v1
--with-build-config=bootstrap-O3
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.1.1 20250518 848e7b119cc4558aec8f473dced811ae8b54829f (Gentoo
15.1.9999 p, commit 931f2ec7eafda39ea33684e191c9e2e8b4239fdc)
```
