[Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404

--- Comment #6 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Backtrace from gdb:

Program received signal SIGSEGV, Segmentation fault.
0x0000000010cfcf74 in reg_save_code(int, machine_mode) [clone .lto_priv.8969]
    ()
(gdb) bt
#0  0x0000000010cfcf74 in reg_save_code(int, machine_mode) [clone
.lto_priv.8969] ()
#1  0x0000000010f4d62c in save_call_clobbered_regs() ()
#2  0x0000000010c20af8 in reload(rtx_insn*, int) ()
#3  0x0000000010c173f0 in (anonymous
namespace)::pass_reload::execute(function*) [clone .lto_priv.2787] ()
#4  0x0000000010635e5c in execute_one_pass(opt_pass*) ()
#5  0x0000000010780420 in execute_pass_list(function*, opt_pass*) [clone
.localalias.70] [clone .lto_priv.4009] ()
#6  0x0000000010683234 in cgraph_node::expand() ()
#7  0x0000000010630cf4 in symbol_table::compile() ()
#8  0x0000000010685bf4 in symbol_table::finalize_compilation_unit() ()
#9  0x00000000105f09dc in compile_file() [clone .lto_priv.2960] ()
#10 0x0000000010547f20 in toplev::main(int, char**) ()
#11 0x0000000010545bf0 in main ()