https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103547
Bug ID: 103547
Summary: [12 Regression] Bootstrap failure
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: tamar.christina at arm dot com
Target Milestone: ---
Target: x86-64
On Linux/x86-64, r12-5775 failed to bootstrap when configured
--with-arch=native --with-cpu=native --prefix=/usr/12.0.0 --enable-clocale=gnu
--with-system-zlib --enable-shared --enable-cet --with-demangler-in-ld
--enable-libmpx --with-multilib-list=m32,m64,mx32 --with-fpmath=sse
where native == skylake-avx512:
https://gcc.gnu.org/pipermail/gcc-regression/2021-December/075945.html
In file included from ../../src-master/gcc/gimple-ssa-strength-reduction.c:37:
In member function ‘hash_table<Descriptor, Lazy, Allocator>::value_type*
hash_table<Descriptor, Lazy, Allocator>::alloc_entries(size_t) const [with
Descriptor = hash_map<tree_node*, tree_node*>::hash_entry; bool Lazy = false;
Allocator = xcallocator]’,
inlined from ‘void hash_table<Descriptor, Lazy, Allocator>::expand() [with
Descriptor = hash_map<tree_node*, tree_node*>::hash_entry; bool Lazy = false;
Allocator = xcallocator]’ at ../../src-master/gcc/hash-table.h:802:40:
../../src-master/gcc/system.h:784:34: error: section type conflict with ‘void
hash_table<Descriptor, Lazy, Allocator>::expand() [with Descriptor =
hash_map<tree_node*, tree_node*>::hash_entry; bool Lazy = false; Allocator =
xcallocator]’
784 | ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0
: 0))
| ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src-master/gcc/hash-table.h:715:3: note: in expansion of macro
‘gcc_assert’
715 | gcc_assert (nentries != NULL);
| ^~~~~~~~~~
In file included from ../../src-master/gcc/coretypes.h:482,
from ../../src-master/gcc/gimple-ssa-strength-reduction.c:38:
../../src-master/gcc/hash-table.h: In member function ‘void
hash_table<Descriptor, Lazy, Allocator>::expand() [with Descriptor =
hash_map<tree_node*, tree_node*>::hash_entry; bool Lazy = false; Allocator =
xcallocator]’:
../../src-master/gcc/hash-table.h:779:1: note: ‘void hash_table<Descriptor,
Lazy, Allocator>::expand() [with Descriptor = hash_map<tree_node*,
tree_node*>::hash_entry; bool Lazy = false; Allocator = xcallocator]’ was
declared here
779 | hash_table<Descriptor, Lazy, Allocator>::expand ()
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/export/gnu/import/git/gcc-test-master-intel64-native/bld/./prev-gcc/xg++
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/./prev-gcc/
-B/usr/12.0.0/x86_64-pc-linux-gnu/bin/ -nostdinc++
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-I/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/include
-I/export/gnu/import/git/gcc-test-master-intel64-native/src-master/libstdc++-v3/libsupc++
-L/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-L/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-fno-PIE -c -g -O2 -fno-checking -gtoggle -DIN_GCC -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I.
-I../../src-master/gcc -I../../src-master/gcc/.
-I../../src-master/gcc/../include -I../../src-master/gcc/../libcpp/include
-I../../src-master/gcc/../libcody -I../../src-master/gcc/../libdecnumber
-I../../src-master/gcc/../libdecnumber/bid -I../libdecnumber
-I../../src-master/gcc/../libbacktrace -o loop-invariant.o -MT
loop-invariant.o -MMD -MP -MF ./.deps/loop-invariant.TPo
../../src-master/gcc/loop-invariant.c
/export/gnu/import/git/gcc-test-master-intel64-native/bld/./prev-gcc/xg++
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/./prev-gcc/
-B/usr/12.0.0/x86_64-pc-linux-gnu/bin/ -nostdinc++
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-I/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/include
-I/export/gnu/import/git/gcc-test-master-intel64-native/src-master/libstdc++-v3/libsupc++
-L/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-L/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-fno-PIE -c -g -O2 -fno-checking -gtoggle -DIN_GCC -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I.
-I../../src-master/gcc -I../../src-master/gcc/.
-I../../src-master/gcc/../include -I../../src-master/gcc/../libcpp/include
-I../../src-master/gcc/../libcody -I../../src-master/gcc/../libdecnumber
-I../../src-master/gcc/../libdecnumber/bid -I../libdecnumber
-I../../src-master/gcc/../libbacktrace -o loop-iv.o -MT loop-iv.o -MMD -MP
-MF ./.deps/loop-iv.TPo ../../src-master/gcc/loop-iv.c
/export/gnu/import/git/gcc-test-master-intel64-native/bld/./prev-gcc/xg++
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/./prev-gcc/
-B/usr/12.0.0/x86_64-pc-linux-gnu/bin/ -nostdinc++
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-I/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/include
-I/export/gnu/import/git/gcc-test-master-intel64-native/src-master/libstdc++-v3/libsupc++
-L/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-L/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-fno-PIE -c -g -O2 -fno-checking -gtoggle -DIN_GCC -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I.
-I../../src-master/gcc -I../../src-master/gcc/.
-I../../src-master/gcc/../include -I../../src-master/gcc/../libcpp/include
-I../../src-master/gcc/../libcody -I../../src-master/gcc/../libdecnumber
-I../../src-master/gcc/../libdecnumber/bid -I../libdecnumber
-I../../src-master/gcc/../libbacktrace -o loop-unroll.o -MT loop-unroll.o
-MMD -MP -MF ./.deps/loop-unroll.TPo ../../src-master/gcc/loop-unroll.c
/export/gnu/import/git/gcc-test-master-intel64-native/bld/./prev-gcc/xg++
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/./prev-gcc/
-B/usr/12.0.0/x86_64-pc-linux-gnu/bin/ -nostdinc++
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-B/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-I/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/include
-I/export/gnu/import/git/gcc-test-master-intel64-native/src-master/libstdc++-v3/libsupc++
-L/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-L/export/gnu/import/git/gcc-test-master-intel64-native/bld/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-fno-PIE -c -g -O2 -fno-checking -gtoggle -DIN_GCC -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I.
-I../../src-master/gcc -I../../src-master/gcc/.
-I../../src-master/gcc/../include -I../../src-master/gcc/../libcpp/include
-I../../src-master/gcc/../libcody -I../../src-master/gcc/../libdecnumber
-I../../src-master/gcc/../libdecnumber/bid -I../libdecnumber
-I../../src-master/gcc/../libbacktrace -o lower-subreg.o -MT lower-subreg.o
-MMD -MP -MF ./.deps/lower-subreg.TPo ../../src-master/gcc/lower-subreg.c
make[6]: *** [Makefile:1142: gimple-ssa-strength-reduction.o] Error 1
make[6]: *** Waiting for unfinished jobs....
In file included from ../../src-master/gcc/coretypes.h:474,
from ../../src-master/gcc/expmed.c:26:
In function ‘poly_uint16 mode_to_bytes(machine_mode)’,
inlined from ‘typename if_nonpoly<typename T::measurement_type>::type
GET_MODE_SIZE(const T&) [with T = scalar_int_mode]’ at
../../src-master/gcc/machmode.h:647:24,
inlined from ‘rtx_def* emit_store_flag_1(rtx, rtx_code, rtx, rtx,
machine_mode, int, int, machine_mode)’ at
../../src-master/gcc/expmed.c:5724:56:
../../src-master/gcc/machmode.h:550:49: warning: ‘*(unsigned
int*)((char*)&int_mode + offsetof(scalar_int_mode, scalar_int_mode::m_mode))’
may be used uninitialized in this function [-Wmaybe-uninitialized]
550 | ? mode_size_inline (mode) : mode_size[mode]);
| ^~~~
../../src-master/gcc/expmed.c: In function ‘rtx_def* emit_store_flag_1(rtx,
rtx_code, rtx, rtx, machine_mode, int, int, machine_mode)’:
../../src-master/gcc/expmed.c:5653:19: note: ‘*(unsigned int*)((char*)&int_mode
+ offsetof(scalar_int_mode, scalar_int_mode::m_mode))’ was declared here
5653 | scalar_int_mode int_mode;
| ^~~~~~~~
rm gfdl.pod gcc.pod gfortran.pod gcov-dump.pod gcov-tool.pod fsf-funding.pod
gpl.pod cpp.pod gcov.pod lto-dump.pod
make[6]: Leaving directory
'/export/gnu/import/git/gcc-test-master-intel64-native/bld/gcc'
make[5]: *** [Makefile:4955: all-stage2-gcc] Error 2
make[5]: Leaving directory
'/export/gnu/import/git/gcc-test-master-intel64-native/bld'
make[4]: *** [Makefile:26026: stage2-bubble] Error 2
make[4]: Leaving directory
'/export/gnu/import/git/gcc-test-master-intel64-native/bld'
make[3]: *** [Makefile:26238: bootstrap] Error 2
make[3]: Leaving directory
'/export/gnu/import/git/gcc-test-master-intel64-native/bld'
Command exited with non-zero status 2
7778.01user 433.46system 20:27.18elapsed 669%CPU (0avgtext+0avgdata
1087728maxresident)k
0inputs+9000224outputs (804major+79453737minor)pagefaults 0swaps
make[2]: *** [Makefile:309: bootstrap] Error 2
r12-5771 is OK. This is triggered by r12-5772:
commit 06f2e7d49fc6341ea0128ccd83fd13705dd2c523
Author: Tamar Christina <tamar.christ...@arm.com>
Date: Fri Dec 3 15:25:44 2021 +0000
sve: combine nested if predicates
The following example
