https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113137
Bug ID: 113137
Summary: [14 regression] Failed bootstrap with -O3
-march=znver2
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 56936
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56936&action=edit
c-cppbuiltin.ii.xz
```
# /tmp/gcc/bin/g++ -c c-cppbuiltin.ii -O3 -march=znver2
/var/tmp/portage/sys-devel/gcc-14.0.0_pre20231224/work/gcc-14-20231224/gcc/c-family/c-cppbuiltin.cc:
In function 'void builtin_define_type_minmax(const char*, const char*, tree)':
/var/tmp/portage/sys-devel/gcc-14.0.0_pre20231224/work/gcc-14-20231224/gcc/c-family/c-cppbuiltin.cc:2043:1:
error: PHI node with wrong VUSE on edge from BB 12
2043 | builtin_define_type_minmax (const char *min_macro, const char
*max_macro,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
.MEM_218 = PHI <.MEM_59(12)>
expected .MEM_191
/var/tmp/portage/sys-devel/gcc-14.0.0_pre20231224/work/gcc-14-20231224/gcc/c-family/c-cppbuiltin.cc:2043:1:
error: multiple virtual PHI nodes in BB 32
.MEM_99 = PHI <.MEM_191(14)>
.MEM_217 = PHI <.MEM_59(14)>
/var/tmp/portage/sys-devel/gcc-14.0.0_pre20231224/work/gcc-14-20231224/gcc/c-family/c-cppbuiltin.cc:2043:1:
error: PHI node with wrong VUSE on edge from BB 32
.MEM_103 = PHI <.MEM_217(32), .MEM_218(37)>
expected .MEM_99
during GIMPLE pass: vect
/var/tmp/portage/sys-devel/gcc-14.0.0_pre20231224/work/gcc-14-20231224/gcc/c-family/c-cppbuiltin.cc:2043:1:
internal compiler error: verify_ssa failed
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
See <https://gcc.gnu.org/bugs/> for instructions.
```
```
Using built-in specs.
COLLECT_GCC=/tmp/gcc/bin/g++
COLLECT_LTO_WRAPPER=/tmp/gcc/libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /home/sam/git/gcc/configure --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu --disable-analyzer
--disable-cet --disable-default-pie --disable-default-ssp --disable-gcov
--disable-libada --disable-libatomic --disable-libgomp --disable-libitm
--disable-libquadmath --disable-libsanitizer --disable-libssp
--disable-libstdcxx-pch --disable-libvtv --disable-lto --disable-multilib
--disable-nls --disable-objc-gc --disable-systemtap --disable-werror
--enable-languages=c,c++ --prefix=/tmp/gcc --with-checking=yes,extra,rtl
--without-libatomic --without-libbacktrace --without-isl --without-zstd
--with-system-zlib --enable-lto --with-build-config=bootstrap-lto
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.0 20231225 (experimental) (GCC)
```
