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| author | Richard Sandiford <richard.sandiford@arm.com> | 2019-08-20 08:54:03 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-08-20 08:54:03 +0000 |
| commit | 257caa552bf930e2770100de70a459a4ede837c0 (patch) | |
| tree | f451a876ef90a91912575133c1f26b0708b25830 /gcc/calls.c | |
| parent | cf0d189eb989906d17010ca7c0b07f1763d5fde5 (diff) | |
| download | gcc-257caa552bf930e2770100de70a459a4ede837c0.zip gcc-257caa552bf930e2770100de70a459a4ede837c0.tar.gz gcc-257caa552bf930e2770100de70a459a4ede837c0.tar.bz2 | |
Add a pass_by_reference flag to function_arg_info
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
Diffstat (limited to 'gcc/calls.c')
| -rw-r--r-- | gcc/calls.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/calls.c b/gcc/calls.c index 454e513..6eefeec 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -946,6 +946,7 @@ apply_pass_by_reference_rules (CUMULATIVE_ARGS *ca, function_arg_info &arg) { arg.type = build_pointer_type (arg.type); arg.mode = TYPE_MODE (arg.type); + arg.pass_by_reference = true; return true; } return false; @@ -2125,6 +2126,7 @@ initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED, "argument must be passed" " by copying"); } + arg.pass_by_reference = true; } unsignedp = TYPE_UNSIGNED (type); @@ -4957,6 +4959,7 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value, call_fusage); arg.mode = Pmode; + arg.pass_by_reference = true; val = force_operand (XEXP (slot, 0), NULL_RTX); } |