https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114912
Bug ID: 114912
Summary: [15 regression] SIGBUS in wi::copy<> on SPARC
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
CC: aldyh at gcc dot gnu.org
Target Milestone: ---
Target: sparc-sun-solaris2.11
Between 20240430 (0b2735e0797fee9b4ec5cd74f22afe0483f888dd) and 20240501
(c3bc2787b8beb7aae67fdf2a7f7271a9a4edca7c),
Solaris/SPARC bootstrap began to fail with a SIGBUS in cc1 compiling stage 1
libgcc.
E.g.
/var/gcc/reghunt/sigbus-range/288807/./gcc/xgcc
-B/var/gcc/reghunt/sigbus-range/288807/./gcc/
-B/usr/local/sparc-sun-solaris2.11/bin/ -B/usr/local/sparc-sun-solaris2.11/lib/
-isystem /usr/local/sparc-sun-solaris2.11/include -isystem
/usr/local/sparc-sun-solaris2.11/sys-include -g -O2 -O2 -g -O2 -DIN_GCC
-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC -g
-DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -fPIC -I. -I.
-I../.././gcc -I/var/gcc/reghunt/master/libgcc
-I/var/gcc/reghunt/master/libgcc/. -I/var/gcc/reghunt/master/libgcc/../gcc
-I/var/gcc/reghunt/master/libgcc/../include -o _muldi3.o -MT _muldi3.o -MD
-MP -MF _muldi3.dep -DL_muldi3 -c /var/gcc/reghunt/master/libgcc/libgcc2.c
-fvisibility=hidden -DHIDE_EXPORTS
during GIMPLE pass: evrp
/var/gcc/reghunt/master/libgcc/libgcc2.c: In function ‘__muldi3’:
/var/gcc/reghunt/master/libgcc/libgcc2.c:538:1: internal compiler error: Bus
Error
538 | }
| ^
0xf26783 crash_signal
/var/gcc/reghunt/master/gcc/toplev.cc:319
0x723e58 void wi::copy<wide_int_storage,
generic_wide_int<wide_int_ref_storage<true, false> > >(wide_int_storage&,
generic_wide_int<wide_int_ref_storage<true, false> > const&)
/var/gcc/reghunt/master/gcc/wide-int.h:2191
0x723e58 wide_int_storage&
wide_int_storage::operator=<wi::hwi_with_prec>(wi::hwi_with_prec const&)
/var/gcc/reghunt/master/gcc/wide-int.h:1247
0x723e58 generic_wide_int<wide_int_storage>&
generic_wide_int<wide_int_storage>::operator=<wi::hwi_with_prec>(wi::hwi_with_prec
const&)
/var/gcc/reghunt/master/gcc/wide-int.h:1002
0x723e58 irange_bitmask::set_unknown(unsigned int)
/var/gcc/reghunt/master/gcc/value-range.h:163
0x723e58 irange::set_varying(tree_node*)
/var/gcc/reghunt/master/gcc/value-range.h:1067
0x13680db gimple_range_global(vrange&, tree_node*, function*)
/var/gcc/reghunt/master/gcc/value-query.cc:419
0x136954f global_range_query::range_of_expr(vrange&, tree_node*, gimple*)
/var/gcc/reghunt/master/gcc/value-query.cc:436
0x1ad000b fur_stmt::get_operand(vrange&, tree_node*)
/var/gcc/reghunt/master/gcc/gimple-range-fold.cc:162
0x1ad5edb fold_using_range::range_of_range_op(vrange&,
gimple_range_op_handler&, fur_source&)
/var/gcc/reghunt/master/gcc/gimple-range-fold.cc:673
0x1ad831f fold_using_range::fold_stmt(vrange&, gimple*, fur_source&,
tree_node*)
/var/gcc/reghunt/master/gcc/gimple-range-fold.cc:604
0x1ad8927 fold_range(vrange&, gimple*, range_query*)
/var/gcc/reghunt/master/gcc/gimple-range-fold.cc:324
0x1ac8727 ranger_cache::get_global_range(vrange&, tree_node*, bool&)
/var/gcc/reghunt/master/gcc/gimple-range-cache.cc:1054
0x1abefaf gimple_ranger::range_of_stmt(vrange&, gimple*, tree_node*)
/var/gcc/reghunt/master/gcc/gimple-range.cc:323
0x1367d2f range_query::value_of_stmt(gimple*, tree_node*)
/var/gcc/reghunt/master/gcc/value-query.cc:133
0x1315c3f rvrp_folder::value_of_stmt(gimple*, tree_node*)
/var/gcc/reghunt/master/gcc/tree-vrp.cc:1001
0x11ab12f substitute_and_fold_dom_walker::before_dom_children(basic_block_def*)
/var/gcc/reghunt/master/gcc/tree-ssa-propagate.cc:820
0x1a4df83 dom_walker::walk(basic_block_def*)
/var/gcc/reghunt/master/gcc/domwalk.cc:311
0x11a9d07 substitute_and_fold_engine::substitute_and_fold(basic_block_def*)
/var/gcc/reghunt/master/gcc/tree-ssa-propagate.cc:999
0x13132f7 execute_ranger_vrp(function*, bool, bool)
/var/gcc/reghunt/master/gcc/tree-vrp.cc:1066
A reghunt identified
commit c60b3e211c555706cdc2dc8bfcdd540152cff350
Author: Aldy Hernandez <al...@redhat.com>
Date: Tue Apr 30 19:39:00 2024 +0200
Reduce startup costs for Value_Range.
as the culprit.
