[Bug rtl-optimization/82020] New: ICE in decompose at rtl.h:2126

["vries at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82020

            Bug ID: 82020
           Summary: ICE in decompose at rtl.h:2126
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

$ gcc -O1 -S pr28776-2.c 
gcc/testsuite/gcc.c-torture/compile/pr28776-2.c: In function 'encode_line':
gcc/testsuite/gcc.c-torture/compile/pr28776-2.c:26:1: internal compiler error:
in decompose, at rtl.h:2126
0x9fac75 wi::int_traits<std::pair<rtx_def*, machine_mode> >::decompose(long*,
unsigned int, std::pair<rtx_def*, machine_mode> const&)
        gcc/rtl.h:2124
0xa33264 wide_int_ref_storage<false>::wide_int_ref_storage<std::pair<rtx_def*,
machine_mode> >(std::pair<rtx_def*, machine_mode> const&, unsigned int)
        gcc/wide-int.h:976
0xa33212 generic_wide_int<wide_int_ref_storage<false>
>::generic_wide_int<std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*,
machine_mode> const&, unsigned int)
        gcc/wide-int.h:753
0xe36629 bool wi::eq_p<std::pair<rtx_def*, machine_mode>, std::pair<rtx_def*,
machine_mode> >(std::pair<rtx_def*, machine_mode> const&, std::pair<rtx_def*,
machine_mode> const&)
        gcc/wide-int.h:1747
0xe31241 simplify_const_relational_operation(rtx_code, machine_mode, rtx_def*,
rtx_def*)
        gcc/simplify-rtx.c:5131
0xe2fd0c simplify_relational_operation(rtx_code, machine_mode, machine_mode,
rtx_def*, rtx_def*)
        gcc/simplify-rtx.c:4614
0xe32d00 simplify_ternary_operation(rtx_code, machine_mode, machine_mode,
rtx_def*, rtx_def*, rtx_def*)
        gcc/simplify-rtx.c:5641
0x1467932 combine_simplify_rtx
        gcc/combine.c:5599
0x14676c3 subst
        gcc/combine.c:5517
0x1467472 subst
        gcc/combine.c:5462
0x1460c6e try_combine
        gcc/combine.c:3332
0x145b790 combine_instructions
        gcc/combine.c:1294
0x147ee78 rest_of_handle_combine
        gcc/combine.c:14663
0x147ef38 execute
        gcc/combine.c:14708