https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98229
Bug ID: 98229
Summary: ICE at -O1 in 32-bit mode on x86_64-pc-linux-gnu in
decompose, at rtl.h:2282
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zhendong.su at inf dot ethz.ch
Target Milestone: ---
[555] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/11.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--prefix=/local/suz-local/software/local/gcc-trunk --enable-languages=c,c++
--disable-werror --enable-multilib --with-system-zlib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20201210 (experimental) [master revision
b46dd03fe94:30c63a5c82a:afc14c8d0a9e7af13698a7eec84226a3cc4b0e67] (GCC)
[556] %
[556] % gcctk -m32 -O0 -c small.c
[557] %
[557] % gcctk -m32 -O1 -c small.c
during RTL pass: expand
small.c: In function âfâ:
small.c:2:14: internal compiler error: in decompose, at rtl.h:2282
2 | void f() { a = a % ~0UL; }
| ~~^~~~~~~~~~
0x927acb wi::int_traits<std::pair<rtx_def*, machine_mode> >::decompose(long*,
unsigned int, std::pair<rtx_def*, machine_mode> const&)
../../gcc-trunk/gcc/rtl.h:2280
0x927acb wide_int_ref_storage<false,
false>::wide_int_ref_storage<std::pair<rtx_def*, machine_mode>
>(std::pair<rtx_def*, machine_mode> const&)
../../gcc-trunk/gcc/wide-int.h:1025
0x927acb generic_wide_int<wide_int_ref_storage<false, false>
>::generic_wide_int<std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*,
machine_mode> const&)
../../gcc-trunk/gcc/wide-int.h:782
0x927acb wide_int_storage::wide_int_storage<std::pair<rtx_def*, machine_mode>
>(std::pair<rtx_def*, machine_mode> const&)
../../gcc-trunk/gcc/wide-int.h:1115
0x927acb
generic_wide_int<wide_int_storage>::generic_wide_int<std::pair<rtx_def*,
machine_mode> >(std::pair<rtx_def*, machine_mode> const&)
../../gcc-trunk/gcc/wide-int.h:782
0x927acb expand_divmod(int, tree_code, machine_mode, rtx_def*, rtx_def*,
rtx_def*, int, optab_methods)
../../gcc-trunk/gcc/expmed.c:4214
0xbec854 expand_doubleword_mod
../../gcc-trunk/gcc/optabs.c:1085
0xbecca1 expand_doubleword_divmod(machine_mode, rtx_def*, rtx_def*, rtx_def**,
bool)
../../gcc-trunk/gcc/optabs.c:1159
0xbea858 expand_binop(machine_mode, optab_tag, rtx_def*, rtx_def*, rtx_def*,
int, optab_methods)
../../gcc-trunk/gcc/optabs.c:2119
0xbedf03 sign_expand_binop(machine_mode, optab_tag, optab_tag, rtx_def*,
rtx_def*, rtx_def*, int, optab_methods)
../../gcc-trunk/gcc/optabs.c:2282
0x928606 expand_divmod(int, tree_code, machine_mode, rtx_def*, rtx_def*,
rtx_def*, int, optab_methods)
../../gcc-trunk/gcc/expmed.c:5216
0x938553 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
../../gcc-trunk/gcc/expr.c:9243
0x93f5e0 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc-trunk/gcc/expr.c:10177
0x94b9d1 store_expr(tree_node*, rtx_def*, int, bool, bool)
../../gcc-trunk/gcc/expr.c:5859
0x94d84f expand_assignment(tree_node*, tree_node*, bool)
../../gcc-trunk/gcc/expr.c:5595
0x7f483a expand_gimple_stmt_1
../../gcc-trunk/gcc/cfgexpand.c:3901
0x7f483a expand_gimple_stmt
../../gcc-trunk/gcc/cfgexpand.c:3999
0x7fc087 expand_gimple_basic_block
../../gcc-trunk/gcc/cfgexpand.c:6036
0x7fe9d6 execute
../../gcc-trunk/gcc/cfgexpand.c:6720
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
[558] %
[558] % cat small.c
unsigned long long a;
void f() { a = a % ~0UL; }
