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untyped calls: use wrapper class type for implicit plus_one

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Instead of get and set macros to apply a delta, use a single macro
that resorts to a temporary wrapper class to apply it.


for  gcc/ChangeLog

	* builtins.cc (delta_type): New template class.
	(set_apply_args_size, get_apply_args_size): Replace with...
	(saved_apply_args_size): ... this.
	(set_apply_result_size, get_apply_result_size): Replace with...
	(saved_apply_result_size): ... this.
	(apply_args_size, apply_result_size): Adjust.
This commit is contained in:
Alexandre Oliva 2023-12-20 04:59:00 -03:00 • committed by Alexandre Oliva
parent 6c22779dfb
commit 438bf6ade4
1 changed files with 20 additions and 12 deletions
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32
gcc/builtins.cc
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@ -1403,16 +1403,24 @@ get_memory_rtx (tree exp, tree len)
/* Built-in functions to perform an untyped call and return. */
#define set_apply_args_size(x) \
(this_target_builtins->x_apply_args_size_plus_one = 1 + (x))
#define get_apply_args_size() \
(this_target_builtins->x_apply_args_size_plus_one - 1)
/* Wrapper that implicitly applies a delta when getting or setting the
enclosed value. */
template <typename T>
class delta_type
{
T &value; T const delta;
public:
delta_type (T &val, T dlt) : value (val), delta (dlt) {}
operator T () const { return value + delta; }
T operator = (T val) const { value = val - delta; return val; }
};
#define saved_apply_args_size \
(delta_type<int> (this_target_builtins->x_apply_args_size_plus_one, -1))
#define apply_args_mode \
(this_target_builtins->x_apply_args_mode)
#define set_apply_result_size(x) \
(this_target_builtins->x_apply_result_size_plus_one = 1 + (x))
#define get_apply_result_size() \
(this_target_builtins->x_apply_result_size_plus_one - 1)
#define saved_apply_result_size \
(delta_type<int> (this_target_builtins->x_apply_result_size_plus_one, -1))
#define apply_result_mode \
(this_target_builtins->x_apply_result_mode)
@ -1422,7 +1430,7 @@ get_memory_rtx (tree exp, tree len)
static int
apply_args_size (void)
{
int size = get_apply_args_size ();
int size = saved_apply_args_size;
int align;
unsigned int regno;
@ -1456,7 +1464,7 @@ apply_args_size (void)
else
apply_args_mode[regno] = as_a <fixed_size_mode> (VOIDmode);
set_apply_args_size (size);
saved_apply_args_size = size;
}
return size;
}
@ -1467,7 +1475,7 @@ apply_args_size (void)
static int
apply_result_size (void)
{
int size = get_apply_result_size ();
int size = saved_apply_result_size;
int align, regno;
/* The values computed by this function never change. */
@ -1500,7 +1508,7 @@ apply_result_size (void)
size = APPLY_RESULT_SIZE;
#endif
set_apply_result_size (size);
saved_apply_result_size = size;
}
return size;
}