https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90530
--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> --- Breakpoint 1, emit_insn (x=0x800003fffd0474c0) at ../../gcc/gcc/emit-rtl.c:5074 5074 rtx_insn *last = get_last_insn (); (gdb) p debug_rtx(x) (insn 3285 0 0 (set (reg:SI 52 %fr24) (subreg:SI (symbol_ref:DI ("default_target_expmed") [flags 0x202] <var_decl 800003fffc55a240 default_target_expmed>) 4)) -1 (nil)) $39 = void (gdb) bt #0 emit_insn (x=0x800003fffd0474c0) at ../../gcc/gcc/emit-rtl.c:5074 #1 0x40000000017c6e48 in emit_input_reload_insns (chain=0x800003fffd0474c0, rl=0x800003fffd001de0, old=0x800003fffd001d80, j=-2147482625) at ../../gcc/gcc/reload1.c:7594 #2 0x40000000017c84f4 in do_input_reload (chain=0x800003fffd0474c0, rl=0x800003fffd001de0, j=-2147482625) at ../../gcc/gcc/reload1.c:7933 #3 0x40000000017c952c in emit_reload_insns (chain=0x800003fffd0474c0) at ../../gcc/gcc/reload1.c:8121 #4 0x40000000017ba170 in reload_as_needed (live_known=-2147482625) at ../../gcc/gcc/reload1.c:4658 #5 0x40000000017aa3d4 in reload (first=0x800003fffd0474c0, global=-2147482625) at ../../gcc/gcc/reload1.c:1050 #6 0x40000000014d11fc in do_reload () at ../../gcc/gcc/ira.c:5528 #7 0x40000000014d1c04 in (anonymous namespace)::pass_reload::execute ( this=0x9000000000cd5) at ../../gcc/gcc/ira.c:5700 #8 0x40000000016f3cac in execute_one_pass (pass=0x800003fffd0474c0) at ../../gcc/gcc/passes.c:2473 #9 0x40000000016f4348 in execute_pass_list_1 (pass=0x800003fffd0474c0) at ../../gcc/gcc/passes.c:2559 #10 0x40000000016f4398 in execute_pass_list_1 (pass=0x80000001007a7918) at ../../gcc/gcc/passes.c:2560 #11 0x40000000016f4460 in execute_pass_list (fn=0x800003fffb30b9a0, pass=0x80000001007a3798) at ../../gcc/gcc/passes.c:2570 ---Type <return> to continue, or q <return> to quit--- #12 0x4000000001012e14 in cgraph_node::expand (this=0x800003fffb368168) at ../../gcc/gcc/cgraphunit.c:2198 #13 0x400000000101392c in expand_all_functions () at ../../gcc/gcc/cgraphunit.c:2336 #14 0x4000000001014fe4 in symbol_table::compile (this=0x800003fffb368168) at ../../gcc/gcc/cgraphunit.c:2687 #15 0x4000000001015a40 in symbol_table::finalize_compilation_unit ( this=0x800003fffb368168) at ../../gcc/gcc/cgraphunit.c:2865 #16 0x40000000018d2174 in compile_file () at ../../gcc/gcc/toplev.c:481 #17 0x40000000018d8480 in do_compile () at ../../gcc/gcc/toplev.c:2205 #18 0x40000000018d8bec in toplev::main (this=0x800003fffb368168, argc=0, argv=0x400000000063c278) at ../../gcc/gcc/toplev.c:2340 #19 0x40000000027b2754 in main (argc=-2147482625, argv=0x8) at ../../gcc/gcc/main.c:39