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always define ARGS_GROW_DOWNWARD

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gcc/ChangeLog:

2015-04-27  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* config/pa/pa.h (ARGS_GROW_DOWNWARD): Define to 1.
	* defaults.h (ARGS_GROW_DOWNWARD): Define it to 0 by default.
	* calls.c (save_fixed_argument_area): Don't chekc if
	ARGS_GROW_DOWNWARD is defined.
	(restore_fixed_argument_area): Likewise.
	(mem_overlaps_already_clobbered_arg_p): Likewise.
	(check_sibcall_argument_overlap): Likewise.
	(expand_call): Likewise.
	(emit_library_call_value_1): Likewise.
	(store_one_arg): Likewise.
	* function.c (assign_parms): Likewise.
	(locate_and_pad_parm): Likewise.
	(pad_to_arg_alignment): Likewise.
	* targhooks.c (std_gimplify_va_arg_expr): Likewise.

From-SVN: r222507
This commit is contained in:
Trevor Saunders 2015-04-28 04:46:20 +00:00 committed by Trevor Saunders
parent 5251b8b350
commit 376bddabe1
6 changed files with 37 additions and 16 deletions
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17
gcc/ChangeLog
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@ -1,3 +1,20 @@
2015-04-27 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* config/pa/pa.h (ARGS_GROW_DOWNWARD): Define to 1.
* defaults.h (ARGS_GROW_DOWNWARD): Define it to 0 by default.
* calls.c (save_fixed_argument_area): Don't chekc if
ARGS_GROW_DOWNWARD is defined.
(restore_fixed_argument_area): Likewise.
(mem_overlaps_already_clobbered_arg_p): Likewise.
(check_sibcall_argument_overlap): Likewise.
(expand_call): Likewise.
(emit_library_call_value_1): Likewise.
(store_one_arg): Likewise.
* function.c (assign_parms): Likewise.
(locate_and_pad_parm): Likewise.
(pad_to_arg_alignment): Likewise.
* targhooks.c (std_gimplify_va_arg_expr): Likewise.
2015-04-27 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* defaults.h (gen_epilogue): New function.

20
gcc/calls.c
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@ -948,7 +948,7 @@ save_fixed_argument_area (int reg_parm_stack_space, rtx argblock, int *low_to_sa
/* Compute the boundary of the area that needs to be saved, if any. */
high = reg_parm_stack_space;
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
high += 1;
#endif
if (high > highest_outgoing_arg_in_use)
@ -979,7 +979,7 @@ save_fixed_argument_area (int reg_parm_stack_space, rtx argblock, int *low_to_sa
BIGGEST_ALIGNMENT / UNITS_PER_WORD) - 1)))
save_mode = BLKmode;
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
delta = -high;
#else
delta = low;
@ -1013,7 +1013,7 @@ restore_fixed_argument_area (rtx save_area, rtx argblock, int high_to_save, int
int delta;
rtx addr, stack_area;
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
delta = -high_to_save;
#else
delta = low_to_save;
@ -1980,7 +1980,7 @@ mem_overlaps_already_clobbered_arg_p (rtx addr, unsigned HOST_WIDE_INT size)
i += crtl->args.pretend_args_size;
#endif
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
i = -i - size;
#endif
if (size > 0)
@ -2286,7 +2286,7 @@ check_sibcall_argument_overlap (rtx_insn *insn, struct arg_data *arg,
if (mark_stored_args_map)
{
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
low = -arg->locate.slot_offset.constant - arg->locate.size.constant;
#else
low = arg->locate.slot_offset.constant;
@ -2979,7 +2979,7 @@ expand_call (tree exp, rtx target, int ignore)
if (! OUTGOING_REG_PARM_STACK_SPACE ((!fndecl ? fntype : TREE_TYPE (fndecl))))
needed += reg_parm_stack_space;
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
highest_outgoing_arg_in_use = MAX (initial_highest_arg_in_use,
needed + 1);
#else
@ -3047,7 +3047,7 @@ expand_call (tree exp, rtx target, int ignore)
else
{
argblock = push_block (GEN_INT (needed), 0, 0);
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
argblock = plus_constant (Pmode, argblock, needed);
#endif
}
@ -4122,7 +4122,7 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value,
if (! OUTGOING_REG_PARM_STACK_SPACE ((!fndecl ? fntype : TREE_TYPE (fndecl))))
needed += reg_parm_stack_space;
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
highest_outgoing_arg_in_use = MAX (initial_highest_arg_in_use,
needed + 1);
#else
@ -4213,7 +4213,7 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value,
/* If this is being stored into a pre-allocated, fixed-size,
stack area, save any previous data at that location. */
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
/* stack_slot is negative, but we want to index stack_usage_map
with positive values. */
upper_bound = -argvec[argnum].locate.slot_offset.constant + 1;
@ -4702,7 +4702,7 @@ store_one_arg (struct arg_data *arg, rtx argblock, int flags,
save any previous data at that location. */
if (argblock && ! variable_size && arg->stack)
{
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
/* stack_slot is negative, but we want to index stack_usage_map
with positive values. */
if (GET_CODE (XEXP (arg->stack_slot, 0)) == PLUS)

2
gcc/config/pa/pa.h
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@ -490,7 +490,7 @@ extern rtx hppa_pic_save_rtx (void);
/* #define STACK_GROWS_DOWNWARD */
/* Believe it or not. */
#define ARGS_GROW_DOWNWARD
#define ARGS_GROW_DOWNWARD 1
/* Define this to nonzero if the nominal address of the stack frame
is at the high-address end of the local variables;

4
gcc/defaults.h
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@ -1225,6 +1225,10 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#define EPILOGUE_USES(REG) false
#endif
#ifndef ARGS_GROW_DOWNWARD
#define ARGS_GROW_DOWNWARD 0
#endif
#ifdef GCC_INSN_FLAGS_H
/* Dependent default target macro definitions

8
gcc/function.c
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@ -3771,7 +3771,7 @@ assign_parms (tree fndecl)
crtl->args.size = CEIL_ROUND (crtl->args.size,
PARM_BOUNDARY / BITS_PER_UNIT);
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
crtl->args.arg_offset_rtx
= (all.stack_args_size.var == 0 ? GEN_INT (-all.stack_args_size.constant)
: expand_expr (size_diffop (all.stack_args_size.var,
@ -4070,7 +4070,7 @@ locate_and_pad_parm (machine_mode passed_mode, tree type, int in_regs,
if (crtl->preferred_stack_boundary < boundary)
crtl->preferred_stack_boundary = boundary;
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
locate->slot_offset.constant = -initial_offset_ptr->constant;
if (initial_offset_ptr->var)
locate->slot_offset.var = size_binop (MINUS_EXPR, ssize_int (0),
@ -4175,7 +4175,7 @@ pad_to_arg_alignment (struct args_size *offset_ptr, int boundary,
tree offset = size_binop (PLUS_EXPR,
ARGS_SIZE_TREE (*offset_ptr),
sp_offset_tree);
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
tree rounded = round_down (offset, boundary / BITS_PER_UNIT);
#else
tree rounded = round_up (offset, boundary / BITS_PER_UNIT);
@ -4191,7 +4191,7 @@ pad_to_arg_alignment (struct args_size *offset_ptr, int boundary,
else
{
offset_ptr->constant = -sp_offset +
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
FLOOR_ROUND (offset_ptr->constant + sp_offset, boundary_in_bytes);
#else
CEIL_ROUND (offset_ptr->constant + sp_offset, boundary_in_bytes);

2
gcc/targhooks.c
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@ -1786,7 +1786,7 @@ std_gimplify_va_arg_expr (tree valist, tree type, gimple_seq *pre_p,
unsigned HOST_WIDE_INT align, boundary;
bool indirect;
#ifdef ARGS_GROW_DOWNWARD
#if ARGS_GROW_DOWNWARD
/* All of the alignment and movement below is for args-grow-up machines.
As of 2004, there are only 3 ARGS_GROW_DOWNWARD targets, and they all
implement their own specialized gimplify_va_arg_expr routines. */