https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939
Bug ID: 110939
Summary: 14.0 ICE at rtl.h:2297 while bootstrapping on
loongarch64
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: panchenghui at loongson dot cn
Target Milestone: ---
since commit 7cdd0860949c6c3232e6cff1d7ca37bb5234074c, I get ICE at rtl.h:2297
when I try to bootstrap on loongarch64.
I have seen the similar case in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110869 and try to build with the
latest commits in master branch but the problem still exists.
Configure:
../gcc/configure --prefix=/home/panchenghui/upstream-unmodded/build/install
--disable-libsanitizer --disable-gcov --disable-multilib
ICE output:
during RTL pass: combine
/home/panchenghui/upstream-unmodded/gcc/gcc/tree-cfgcleanup.cc: In function
'bool want_merge_blocks_p(basic_block, basic_block)':
/home/panchenghui/upstream-unmodded/gcc/gcc/tree-cfgcleanup.cc:761:1: internal
compiler error: in decompose, at rtl.h:2297
761 | }
| ^
0x1210c7997 wi::int_traits<std::pair<rtx_def*, machine_mode>
>::decompose(long*, unsigned int, std::pair<rtx_def*, machine_mode> const&)
/home/panchenghui/upstream-unmodded/gcc/gcc/rtl.h:2297
0x1211478cb wide_int_ref_storage<false,
true>::wide_int_ref_storage<std::pair<rtx_def*, machine_mode>
>(std::pair<rtx_def*, machine_mode> const&)
/home/panchenghui/upstream-unmodded/gcc/gcc/wide-int.h:1030
0x121146bab generic_wide_int<wide_int_ref_storage<false, true>
>::generic_wide_int<std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*,
machine_mode> const&)
/home/panchenghui/upstream-unmodded/gcc/gcc/wide-int.h:788
0x12177d13b simplify_const_unary_operation(rtx_code, machine_mode, rtx_def*,
machine_mode)
/home/panchenghui/upstream-unmodded/gcc/gcc/simplify-rtx.cc:2131
0x1217774e7 simplify_context::simplify_unary_operation(rtx_code, machine_mode,
rtx_def*, machine_mode)
/home/panchenghui/upstream-unmodded/gcc/gcc/simplify-rtx.cc:889
0x12177568f simplify_context::simplify_gen_unary(rtx_code, machine_mode,
rtx_def*, machine_mode)
/home/panchenghui/upstream-unmodded/gcc/gcc/simplify-rtx.cc:360
0x120f6e79f simplify_gen_unary(rtx_code, machine_mode, rtx_def*, machine_mode)
/home/panchenghui/upstream-unmodded/gcc/gcc/rtl.h:3520
0x12227818b simplify_comparison
/home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:13129
0x1222607c7 combine_simplify_rtx
/home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:6176
0x12225e30f subst
/home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:5609
0x12225df23 subst
/home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:5536
0x12225df23 subst
/home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:5536
0x122256ac7 try_combine
/home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:3369
0x1222506fb combine_instructions
/home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:1357
0x12227da6b rest_of_handle_combine
/home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:15063
0x12227db83 execute
/home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:15107
