[Bug rtl-optimization/123267] [16 Regression] ICE building libstdc++-v3/src/c++20/tzdb.cc

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123267

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 63125
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63125&action=edit
testcase

/home/apinski/src/upstream-gcc-git/gcc/objdir/./gcc/xgcc 
-B/home/apinski/src/upstream-gcc-git/gcc/objdir/./gcc tzdb.ii -O2 -fPIC -S
during RTL pass: ce1
/home/apinski/src/upstream-gcc-git/gcc/libstdc++-v3/src/c++20/tzdb.cc: In
member function ‘std::chrono::sys_seconds
std::chrono::{anonymous}::Rule::start_time(std::chrono::year,
std::chrono::seconds) const’:
/home/apinski/src/upstream-gcc-git/gcc/libstdc++-v3/src/c++20/tzdb.cc:610:7:
internal compiler error: in maybe_legitimize_operand, at optabs.cc:8248
  610 |       }
      |       ^
0x3bc2f62 internal_error(char const*, ...)
       
/home/apinski/src/upstream-gcc-git/gcc/gcc/diagnostic-global-context.cc:787
0x3bd177d fancy_abort(char const*, int, char const*)
        /home/apinski/src/upstream-gcc-git/gcc/gcc/diagnostics/context.cc:1805
0x1c4bef6 maybe_legitimize_operand
        /home/apinski/src/upstream-gcc-git/gcc/gcc/optabs.cc:8248
0x1c4c7ee maybe_legitimize_operands(insn_code, unsigned int, unsigned int,
expand_operand*)
        /home/apinski/src/upstream-gcc-git/gcc/gcc/optabs.cc:8396
0x1c4c899 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
        /home/apinski/src/upstream-gcc-git/gcc/gcc/optabs.cc:8415
0x1c4ce8c maybe_expand_insn(insn_code, unsigned int, expand_operand*)
        /home/apinski/src/upstream-gcc-git/gcc/gcc/optabs.cc:8470
0x1c44427 emit_conditional_move_1
        /home/apinski/src/upstream-gcc-git/gcc/gcc/optabs.cc:5403
0x1c44157 emit_conditional_move(rtx_def*, rtx_comparison, rtx_def*, rtx_def*,
machine_mode, int)
        /home/apinski/src/upstream-gcc-git/gcc/gcc/optabs.cc:5316
0x395246a noce_emit_cmove
        /home/apinski/src/upstream-gcc-git/gcc/gcc/ifcvt.cc:1982
0x39557a6 noce_try_cond_zero_arith
        /home/apinski/src/upstream-gcc-git/gcc/gcc/ifcvt.cc:3194
0x395813c noce_process_if_block
        /home/apinski/src/upstream-gcc-git/gcc/gcc/ifcvt.cc:4401
0x395951e noce_find_if_block
        /home/apinski/src/upstream-gcc-git/gcc/gcc/ifcvt.cc:4875
0x3959bbf find_if_header
        /home/apinski/src/upstream-gcc-git/gcc/gcc/ifcvt.cc:5080
0x395c523 if_convert
        /home/apinski/src/upstream-gcc-git/gcc/gcc/ifcvt.cc:6227
0x395c71b rest_of_handle_if_conversion
        /home/apinski/src/upstream-gcc-git/gcc/gcc/ifcvt.cc:6292
0x395c7b8 execute
        /home/apinski/src/upstream-gcc-git/gcc/gcc/ifcvt.cc:6331
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