This patch adds a flag that tells targets whether an argument
has been converted to pass-by-reference form. This replaces
assign_parm_data_one::passed_pointer in function.c.
The flag is set automatically for places that call
apply_pass_by_reference_rules. Places that apply
pass-by-reference manually need to set it themselves.
(After previous changes, no targets apply pass-by-reference
manually. They all go through apply_pass_by_reference_rules.)
2019-08-20 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* calls.h (function_arg_info): Add a pass_by_reference field,
defaulting to false.
* calls.c (apply_pass_by_reference_rules): Set pass_by_reference
when applying pass-by-reference semantics.
(initialize_argument_information): Likewise.
(emit_library_call_value_1): Likewise.
* function.c (assign_parm_data_one): Remove passed_pointer field.
(assign_parm_find_data_types): Don't set it.
(assign_parm_find_stack_rtl, assign_parm_adjust_stack_rtl)
(assign_parm_setup_reg, assign_parms, gimplify_parameters): Use
arg.pass_by_reference instead of passed_pointer.
From-SVN: r274707
