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c-common.c (default_valid_lang_attribute): New fn.

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* c-common.c (default_valid_lang_attribute): New fn.
	(valid_lang_attribute): New callback ptr.
	(decl_attributes): Call it.  Move init_priority support into
	C++ frontend.

From-SVN: r26419
This commit is contained in:
Jason Merrill 1999-04-13 21:04:06 +00:00 committed by Jason Merrill
parent b35a537483
commit adfaf194f3
2 changed files with 30 additions and 63 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
Tue Apr 13 21:01:36 1999 Jason Merrill <jason@yorick.cygnus.com>
* c-common.c (default_valid_lang_attribute): New fn.
(valid_lang_attribute): New callback ptr.
(decl_attributes): Call it. Move init_priority support into
C++ frontend.
Tue Apr 13 17:47:14 1999 John Wehle (john@feith.com)
* i386.md (movdi): Add splitter.

86
gcc/c-common.c
View File

@ -54,8 +54,7 @@ int skip_evaluation;
enum attrs {A_PACKED, A_NOCOMMON, A_COMMON, A_NORETURN, A_CONST, A_T_UNION,
A_NO_CHECK_MEMORY_USAGE, A_NO_INSTRUMENT_FUNCTION,
A_CONSTRUCTOR, A_DESTRUCTOR, A_MODE, A_SECTION, A_ALIGNED,
A_UNUSED, A_FORMAT, A_FORMAT_ARG, A_WEAK, A_ALIAS,
A_INIT_PRIORITY};
A_UNUSED, A_FORMAT, A_FORMAT_ARG, A_WEAK, A_ALIAS};
enum format_type { printf_format_type, scanf_format_type,
strftime_format_type };
@ -68,6 +67,7 @@ static void record_function_format PROTO((tree, tree, enum format_type,
int, int));
static void record_international_format PROTO((tree, tree, int));
static tree c_find_base_decl PROTO((tree));
static int default_valid_lang_attribute PROTO ((tree, tree, tree, tree));
/* Keep a stack of if statements. We record the number of compound
statements seen up to the if keyword, as well as the line number
@ -94,12 +94,6 @@ static int if_stack_pointer = 0;
/* Generate RTL for the start of an if-then, and record the start of it
for ambiguous else detection. */
/* A list of objects which have constructors or destructors which
reside in the global scope, and have an init_priority attribute
associated with them. The decl is stored in the TREE_VALUE slot
and the priority number is stored in the TREE_PURPOSE slot. */
tree static_aggregates_initp;
void
c_expand_start_cond (cond, exitflag, compstmt_count)
tree cond;
@ -398,11 +392,29 @@ init_attributes ()
add_attribute (A_FORMAT_ARG, "format_arg", 1, 1, 1);
add_attribute (A_WEAK, "weak", 0, 0, 1);
add_attribute (A_ALIAS, "alias", 1, 1, 1);
add_attribute (A_INIT_PRIORITY, "init_priority", 0, 1, 0);
add_attribute (A_NO_INSTRUMENT_FUNCTION, "no_instrument_function", 0, 0, 1);
add_attribute (A_NO_CHECK_MEMORY_USAGE, "no_check_memory_usage", 0, 0, 1);
}
/* Default implementation of valid_lang_attribute, below. By default, there
are no language-specific attributes. */
static int
default_valid_lang_attribute (attr_name, attr_args, decl, type)
tree attr_name ATTRIBUTE_UNUSED;
tree attr_args ATTRIBUTE_UNUSED;
tree decl ATTRIBUTE_UNUSED;
tree type ATTRIBUTE_UNUSED;
{
return 0;
}
/* Return a 1 if ATTR_NAME and ATTR_ARGS denote a valid language-specific
attribute for either declaration DECL or type TYPE and 0 otherwise. */
int (*valid_lang_attribute) PROTO ((tree, tree, tree, tree))
= default_valid_lang_attribute;
/* Process the attributes listed in ATTRIBUTES and PREFIX_ATTRIBUTES
and install them in NODE, which is either a DECL (including a TYPE_DECL)
or a TYPE. PREFIX_ATTRIBUTES can appear after the declaration specifiers
@ -455,7 +467,8 @@ decl_attributes (node, attributes, prefix_attributes)
if (i == attrtab_idx)
{
if (! valid_machine_attribute (name, args, decl, type))
if (! valid_machine_attribute (name, args, decl, type)
&& ! (* valid_lang_attribute) (name, args, decl, type))
warning ("`%s' attribute directive ignored",
IDENTIFIER_POINTER (name));
else if (decl != 0)
@ -914,59 +927,6 @@ decl_attributes (node, attributes, prefix_attributes)
DECL_NO_CHECK_MEMORY_USAGE (decl) = 1;
break;
case A_INIT_PRIORITY:
{
tree initp_expr = (args ? TREE_VALUE (args): NULL_TREE);
int pri;
if (initp_expr)
STRIP_NOPS (initp_expr);
if (!initp_expr || TREE_CODE (initp_expr) != INTEGER_CST)
{
error ("requested init_priority is not an integer constant");
continue;
}
pri = TREE_INT_CST_LOW (initp_expr);
while (TREE_CODE (type) == ARRAY_TYPE)
type = TREE_TYPE (type);
if (is_type || TREE_CODE (decl) != VAR_DECL
|| ! TREE_STATIC (decl)
|| DECL_EXTERNAL (decl)
|| (TREE_CODE (type) != RECORD_TYPE
&& TREE_CODE (type) != UNION_TYPE)
/* Static objects in functions are initialized the
first time control passes through that
function. This is not precise enough to pin down an
init_priority value, so don't allow it. */
|| current_function_decl)
{
error ("can only use init_priority attribute on file-scope definitions of objects of class type");
continue;
}
if (pri > MAX_INIT_PRIORITY || pri <= 0)
{
error ("requested init_priority is out of range");
continue;
}
/* Check for init_priorities that are reserved for
language and runtime support implementations.*/
if (pri <= MAX_RESERVED_INIT_PRIORITY)
{
warning
("requested init_priority is reserved for internal use");
}
static_aggregates_initp
= perm_tree_cons (initp_expr, decl, static_aggregates_initp);
break;
}
case A_NO_INSTRUMENT_FUNCTION:
if (TREE_CODE (decl) != FUNCTION_DECL)
{