#include "config.h"
#include "system.h"
#include "tree.h"
#include "rtl.h"
#include "insn-config.h"
#include "integrate.h"
#include "expr.h"
#include "c-tree.h"
#include "function.h"
#include "flags.h"
#include "toplev.h"
#include "diagnostic.h"
#include "tree-inline.h"
#include "varray.h"
#include "ggc.h"
#ifdef PFE
#include "pfe/pfe.h"
#include "pfe/c-freeze-thaw.h"
#endif
static int c_tree_printer PARAMS ((output_buffer *));
static tree inline_forbidden_p PARAMS ((tree *, int *, void *));
static void expand_deferred_fns PARAMS ((void));
static tree start_cdtor PARAMS ((int));
static void finish_cdtor PARAMS ((tree));
static varray_type deferred_fns;
int
c_missing_noreturn_ok_p (decl)
tree decl;
{
return flag_hosted && MAIN_NAME_P (DECL_ASSEMBLER_NAME (decl));
}
int
c_disregard_inline_limits (fn)
tree fn;
{
if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) != NULL)
return 1;
return DECL_DECLARED_INLINE_P (fn) && (DECL_EXTERNAL (fn) || flag_obey_inline);
}
static tree
inline_forbidden_p (nodep, walk_subtrees, fn)
tree *nodep;
int *walk_subtrees ATTRIBUTE_UNUSED;
void *fn;
{
tree node = *nodep;
tree t;
switch (TREE_CODE (node))
{
case CALL_EXPR:
t = get_callee_fndecl (node);
if (! t)
break;
if (setjmp_call_p (t))
return node;
switch (DECL_FUNCTION_CODE (t))
{
case BUILT_IN_VARARGS_START:
case BUILT_IN_STDARG_START:
#if 0
case BUILT_IN_RETURN_ADDRESS:
#endif
return node;
default:
break;
}
break;
case DECL_STMT:
if (TREE_CODE (TREE_OPERAND (node, 0)) == FUNCTION_DECL
&& DECL_INITIAL (TREE_OPERAND (node, 0)))
return node;
break;
case GOTO_STMT:
case GOTO_EXPR:
t = TREE_OPERAND (node, 0);
if (TREE_CODE (t) != LABEL_DECL)
return node;
if (TREE_CODE (t) == LABEL_DECL
&& DECL_CONTEXT (t) && DECL_CONTEXT (t) != fn)
return node;
break;
default:
break;
}
return NULL_TREE;
}
int
c_cannot_inline_tree_fn (fnp)
tree *fnp;
{
tree fn = *fnp;
tree t;
if (flag_really_no_inline
&& lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) == NULL)
return 1;
if (! function_attribute_inlinable_p (fn))
{
DECL_UNINLINABLE (fn) = 1;
return 1;
}
if (fn == current_function_decl)
{
t = get_pending_sizes ();
put_pending_sizes (t);
if (t)
{
DECL_UNINLINABLE (fn) = 1;
return 1;
}
}
if (DECL_CONTEXT (fn))
{
if (DECL_LANG_SPECIFIC (fn)->pending_sizes)
{
DECL_UNINLINABLE (fn) = 1;
return 1;
}
}
else
{
t = current_function_decl;
while (t && t != fn)
t = DECL_CONTEXT (t);
if (! t)
return 0;
}
if (walk_tree (&DECL_SAVED_TREE (fn), inline_forbidden_p, fn, NULL))
{
DECL_UNINLINABLE (fn) = 1;
return 1;
}
return 0;
}
const char *
c_objc_common_init (filename)
const char *filename;
{
#ifdef PFE
if (pfe_operation == PFE_LOAD)
{
pfe_c_init_decl_processing ();
}
else
c_init_decl_processing ();
#else
c_init_decl_processing ();
#endif
filename = c_common_init (filename);
add_c_tree_codes ();
save_lang_status = &push_c_function_context;
restore_lang_status = &pop_c_function_context;
mark_lang_status = &mark_c_function_context;
lang_expand_expr = c_expand_expr;
lang_expand_decl_stmt = c_expand_decl_stmt;
diagnostic_format_decoder (global_dc) = &c_tree_printer;
lang_missing_noreturn_ok_p = &c_missing_noreturn_ok_p;
if (mesg_implicit_function_declaration < 0)
{
if (flag_isoc99)
mesg_implicit_function_declaration = flag_pedantic_errors ? 2 : 1;
else
mesg_implicit_function_declaration = 0;
}
VARRAY_TREE_INIT (deferred_fns, 32, PFE_VARRAY "deferred_fns");
ggc_add_tree_varray_root (&deferred_fns, 1);
#ifdef DBX_ONLY_USED_SYMBOLS
if (flag_debug_only_used_symbols == -1)
flag_debug_only_used_symbols = 1;
#endif
return filename;
}
int
defer_fn (fn)
tree fn;
{
VARRAY_PUSH_TREE (deferred_fns, fn);
return 1;
}
static void
expand_deferred_fns ()
{
unsigned int i;
#ifdef PFE
if (pfe_operation == PFE_DUMP)
return;
#endif
for (i = 0; i < VARRAY_ACTIVE_SIZE (deferred_fns); i++)
{
tree decl = VARRAY_TREE (deferred_fns, i);
if (! TREE_ASM_WRITTEN (decl))
{
if (! TREE_PUBLIC (decl))
DECL_DEFER_OUTPUT (decl) = 1;
c_expand_deferred_function (decl);
}
}
VARRAY_FREE (deferred_fns);
}
static tree
start_cdtor (method_type)
int method_type;
{
tree fnname = get_file_function_name (method_type);
tree void_list_node_1 = build_tree_list (NULL_TREE, void_type_node);
tree body;
start_function (void_list_node_1,
build_nt (CALL_EXPR, fnname,
tree_cons (NULL_TREE, NULL_TREE, void_list_node_1),
NULL_TREE),
NULL_TREE);
store_parm_decls ();
current_function_cannot_inline
= "static constructors and destructors cannot be inlined";
body = c_begin_compound_stmt ();
pushlevel (0);
clear_last_expr ();
add_scope_stmt (1, 0);
return body;
}
static void
finish_cdtor (body)
tree body;
{
tree scope;
tree block;
scope = add_scope_stmt (0, 0);
block = poplevel (0, 0, 0);
SCOPE_STMT_BLOCK (TREE_PURPOSE (scope)) = block;
SCOPE_STMT_BLOCK (TREE_VALUE (scope)) = block;
RECHAIN_STMTS (body, COMPOUND_BODY (body));
finish_function (0, 0);
}
void
c_objc_common_finish_file ()
{
expand_deferred_fns ();
if (static_ctors)
{
tree body = start_cdtor ('I');
for (; static_ctors; static_ctors = TREE_CHAIN (static_ctors))
c_expand_expr_stmt (build_function_call (TREE_VALUE (static_ctors),
NULL_TREE));
finish_cdtor (body);
}
if (static_dtors)
{
tree body = start_cdtor ('D');
for (; static_dtors; static_dtors = TREE_CHAIN (static_dtors))
c_expand_expr_stmt (build_function_call (TREE_VALUE (static_dtors),
NULL_TREE));
finish_cdtor (body);
}
{
int flags;
FILE *stream = dump_begin (TDI_all, &flags);
if (stream)
{
dump_node (getdecls (), flags & ~TDF_SLIM, stream);
dump_end (TDI_all, stream);
}
}
}
static int
c_tree_printer (buffer)
output_buffer *buffer;
{
tree t = va_arg (output_buffer_format_args (buffer), tree);
switch (*output_buffer_text_cursor (buffer))
{
case 'D':
case 'F':
case 'T':
{
const char *n = DECL_NAME (t)
? (*decl_printable_name) (t, 2)
: "({anonymous})";
output_add_string (buffer, n);
}
return 1;
default:
return 0;
}
}
#ifdef PFE
void
pfe_freeze_thaw_c_lang_globals (hdr)
struct pfe_lang_compiler_state *hdr;
{
PFE_GLOBAL_TO_HDR_IF_FREEZING (deferred_fns);
pfe_freeze_thaw_varray_tree (&hdr->deferred_fns);
PFE_HDR_TO_GLOBAL_IF_THAWING (deferred_fns);
}
#endif