Some targets emit thunks from the targetm.asm_out.code_end
function and set the DECL_IGNORED_P, but due to
e69ac020372 ("Add line debug info for virtual thunks")
the value in prologue_location is no longer ignored.
So reset that value before calling the backend.
2021-05-10 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR middle-end/100467
* toplev.c (compile_file): Call insn_locations_init before
targetm.asm_out.code_end.
/* This must be at the end before unwind and debug info.
Some target ports emit PIC setup thunks here. */
+ insn_locations_init ();
targetm.asm_out.code_end ();
/* Do dbx symbols. */