https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64580
--- Comment #9 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(gdb) bt
#0 0x0000000010a64660 in compute_vrsave_mask () at
../../gcc/gcc/config/rs6000/rs6000.c:21149
#1 rs6000_stack_info () at ../../gcc/gcc/config/rs6000/rs6000.c:21686
#2 0x0000000010a65694 in rs6000_output_function_prologue (file=0x114a5800,
size=<optimized out>) at ../../gcc/gcc/config/rs6000/rs6000.c:24284
#3 0x0000000010320300 in final_start_function (first=<optimized out>,
file=0x114a5800, optimize_p=<optimized out>) at ../../gcc/gcc/final.c:1881
#4 0x0000000010a3cc88 in rs6000_output_mi_thunk (file=0x114a5800,
thunk_fndecl=<optimized out>, delta=<optimized out>, vcall_offset=<optimized
out>,
function=<optimized out>) at ../../gcc/gcc/config/rs6000/rs6000.c:25807
#5 0x000000001020f5b4 in cgraph_node::expand_thunk (this=this@entry=0xcbb3390,
output_asm_thunks=output_asm_thunks@entry=true,
force_gimple_thunk=force_gimple_thunk@entry=false) at
../../gcc/gcc/cgraphunit.c:1528
#6 0x0000000010210814 in cgraph_node::assemble_thunks_and_aliases
(this=this@entry=0xcbb3200) at ../../gcc/gcc/cgraphunit.c:1742
#7 0x000000001021079c in cgraph_node::assemble_thunks_and_aliases
(this=this@entry=0xcbb23f0) at ../../gcc/gcc/cgraphunit.c:1758
#8 0x0000000010210b04 in cgraph_node::expand (this=this@entry=0xcbb23f0) at
../../gcc/gcc/cgraphunit.c:1867
#9 0x00000000102128d8 in expand_all_functions () at
../../gcc/gcc/cgraphunit.c:1940
#10 symbol_table::compile (this=0xa8100a8) at ../../gcc/gcc/cgraphunit.c:2293
#11 0x000000001015b9a0 in lto_main () at ../../gcc/gcc/lto/lto.c:3457
#12 0x00000000106bc94c in compile_file () at ../../gcc/gcc/toplev.c:594
#13 0x00000000101262a8 in do_compile () at ../../gcc/gcc/toplev.c:2047
#14 toplev::main (this=<optimized out>, argc=15, argv=0xfff00ead8) at
../../gcc/gcc/toplev.c:2144
#15 0x0000000010126c7c in main (argc=<optimized out>, argv=0xfff00ead8) at
../../gcc/gcc/main.c:38
