https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117134
Bug ID: 117134
Summary: [15 regression] ICE when building mercury-22.01.1 with
-march=znver2
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
Target Milestone: ---
Originally reported downstream in Gentoo at https://bugs.gentoo.org/941513.
```
$ gcc -c ./pretty_printer.i -O2 -mavx
pretty_printer.m: In function
‘mercury__pretty_printer__initial_formatter_map_0_f_0’:
pretty_printer.m:6338:1: error: unrecognizable insn:
(insn 9 8 10 2 (set (reg:V2DI 427)
(vec_merge:V2DI (vec_duplicate:V2DI (const:DI (plus:DI (symbol_ref:DI
("mercury__pretty_printer_scalar_common_2") [flags 0x2] <var_decl
0x7232385a25a0 mercury__pretty_printer_scalar_common_2>)
(const_int 120 [0x78]))))
(reg:V2DI 427)
(const_int 2 [0x2]))) -1
(nil))
during RTL pass: vregs
pretty_printer.m:6338:1: internal compiler error: in extract_insn, at
recog.cc:2882
0x59b5612bf03d internal_error(char const*, ...)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/diagnostic-global-context.cc:517
0x59b56129ead6 fancy_abort(char const*, int, char const*)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/diagnostic.cc:1533
0x59b560abc9da _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/rtl-error.cc:108
0x59b560abd13f _fatal_insn_not_found(rtx_def const*, char const*, int, char
const*)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/rtl-error.cc:116
0x59b55ffd0b2a extract_insn(rtx_insn*)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/recog.cc:2882
0x59b56189c899 instantiate_virtual_regs_in_insn
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/function.cc:1612
0x59b56189c899 instantiate_virtual_regs
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/function.cc:1995
0x59b56189c705 execute
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/function.cc:2042
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,m2,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
b4a852b00ffc7c9436d15867d602c28837c97758' --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 20241013 (experimental)
27f6b376e8e196c7c85c8b47436cd2f2993768da (Gentoo Hardened 15.0.9999 p, commit
b4a852b00ffc7c9436d15867d602c28837c97758)
```
