/* Some code common to C and ObjC front ends.
- Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
#include "cgraph.h"
static bool c_tree_printer (pretty_printer *, text_info *);
-static tree inline_forbidden_p (tree *, int *, void *);
-static void expand_deferred_fns (void);
static tree start_cdtor (int);
static void finish_cdtor (tree);
-static GTY(()) varray_type deferred_fns;
-
int
c_missing_noreturn_ok_p (tree decl)
{
if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) != NULL)
return 1;
- return DECL_DECLARED_INLINE_P (fn) && DECL_EXTERNAL (fn);
-}
-
-static tree
-inline_forbidden_p (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;
-
- /* We cannot inline functions that call setjmp. */
- if (setjmp_call_p (t))
- return node;
-
- switch (DECL_FUNCTION_CODE (t))
- {
- /* We cannot inline functions that take a variable number of
- arguments. */
- case BUILT_IN_VA_START:
- case BUILT_IN_STDARG_START:
-#if 0
- /* Functions that need information about the address of the
- caller can't (shouldn't?) be inlined. */
- case BUILT_IN_RETURN_ADDRESS:
-#endif
- return node;
-
- default:
- break;
- }
-
- break;
-
- case DECL_STMT:
- /* We cannot inline functions that contain other functions. */
- 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);
-
- /* We will not inline a function which uses computed goto. The
- addresses of its local labels, which may be tucked into
- global storage, are of course not constant across
- instantiations, which causes unexpected behavior. */
- if (TREE_CODE (t) != LABEL_DECL)
- return node;
-
- /* We cannot inline a nested function that jumps to a nonlocal
- label. */
- if (TREE_CODE (t) == LABEL_DECL
- && !C_DECL_FILE_SCOPE (t) && DECL_CONTEXT (t) != fn)
- return node;
-
- break;
-
- case RECORD_TYPE:
- case UNION_TYPE:
- /* We cannot inline a function of the form
-
- void F (int i) { struct S { int ar[i]; } s; }
-
- Attempting to do so produces a catch-22 in tree-inline.c.
- If walk_tree examines the TYPE_FIELDS chain of RECORD_TYPE/
- UNION_TYPE nodes, then it goes into infinite recursion on a
- structure containing a pointer to its own type. If it doesn't,
- then the type node for S doesn't get adjusted properly when
- F is inlined, and we abort in find_function_data. */
- for (t = TYPE_FIELDS (node); t; t = TREE_CHAIN (t))
- if (variably_modified_type_p (TREE_TYPE (t)))
- return node;
-
- default:
- break;
- }
-
- return NULL_TREE;
+ return (!flag_really_no_inline && DECL_DECLARED_INLINE_P (fn)
+ && DECL_EXTERNAL (fn));
}
int
{
tree fn = *fnp;
tree t;
+ bool do_warning = (warn_inline
+ && DECL_INLINE (fn)
+ && DECL_DECLARED_INLINE_P (fn)
+ && !DECL_IN_SYSTEM_HEADER (fn));
if (flag_really_no_inline
&& lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) == NULL)
- return 1;
+ {
+ if (do_warning)
+ warning ("%Jfunction '%F' can never be inlined because it "
+ "is suppressed using -fno-inline", fn, fn);
+ goto cannot_inline;
+ }
/* Don't auto-inline anything that might not be bound within
this unit of translation. */
if (!DECL_DECLARED_INLINE_P (fn) && !(*targetm.binds_local_p) (fn))
- goto cannot_inline;
+ {
+ if (do_warning)
+ warning ("%Jfunction '%F' can never be inlined because it might not "
+ "be bound within this unit of translation", fn, fn);
+ goto cannot_inline;
+ }
if (! function_attribute_inlinable_p (fn))
- goto cannot_inline;
+ {
+ if (do_warning)
+ warning ("%Jfunction '%F' can never be inlined because it uses "
+ "attributes conflicting with inlining", fn, fn);
+ goto cannot_inline;
+ }
/* If a function has pending sizes, we must not defer its
compilation, and we can't inline it as a tree. */
put_pending_sizes (t);
if (t)
- goto cannot_inline;
+ {
+ if (do_warning)
+ warning ("%Jfunction '%F' can never be inlined because it has "
+ "pending sizes", fn, fn);
+ goto cannot_inline;
+ }
}
- if (! C_DECL_FILE_SCOPE (fn))
+ if (! DECL_FILE_SCOPE_P (fn))
{
/* If a nested function has pending sizes, we may have already
saved them. */
if (DECL_LANG_SPECIFIC (fn)->pending_sizes)
- goto cannot_inline;
- }
- else
- {
- /* We rely on the fact that this function is called upfront,
- just before we start expanding a function. If FN is active
- (i.e., it's the current_function_decl or a parent thereof),
- we have to walk FN's saved tree. Otherwise, we can safely
- assume we have done it before and, if we didn't mark it as
- uninlinable (in which case we wouldn't have been called), it
- is inlinable. Unfortunately, this strategy doesn't work for
- nested functions, because they're only expanded as part of
- their enclosing functions, so the inlinability test comes in
- late. */
- t = current_function_decl;
-
- while (t && t != fn)
- t = DECL_CONTEXT (t);
- if (! t)
- return 0;
+ {
+ if (do_warning)
+ warning ("%Jnested function '%F' can never be inlined because it "
+ "has possibly saved pending sizes", fn, fn);
+ goto cannot_inline;
+ }
}
- if (walk_tree (&DECL_SAVED_TREE (fn), inline_forbidden_p, fn, NULL))
- goto cannot_inline;
-
return 0;
cannot_inline:
mesg_implicit_function_declaration = 0;
}
- VARRAY_TREE_INIT (deferred_fns, 32, "deferred_fns");
-
return true;
}
-/* Register a function tree, so that its optimization and conversion
- to RTL is only done at the end of the compilation. */
-
-int
-defer_fn (tree fn)
-{
- VARRAY_PUSH_TREE (deferred_fns, fn);
-
- return 1;
-}
-
-/* Expand deferred functions for C and ObjC. */
-
-static void
-expand_deferred_fns (void)
-{
- unsigned int i;
-
- for (i = 0; i < VARRAY_ACTIVE_SIZE (deferred_fns); i++)
- {
- tree decl = VARRAY_TREE (deferred_fns, i);
-
- if (! TREE_ASM_WRITTEN (decl))
- {
- /* For static inline functions, delay the decision whether to
- emit them or not until wrapup_global_declarations. */
- if (! TREE_PUBLIC (decl))
- DECL_DEFER_OUTPUT (decl) = 1;
- c_expand_deferred_function (decl);
- }
- }
-
- deferred_fns = 0;
-}
-
static tree
start_cdtor (int method_type)
{
RECHAIN_STMTS (body, COMPOUND_BODY (body));
- finish_function (0, 0);
+ finish_function ();
}
/* Called at end of parsing, but before end-of-file processing. */
them based on linkage rules. */
merge_translation_unit_decls ();
- if (flag_unit_at_a_time)
- {
- cgraph_finalize_compilation_unit ();
- cgraph_optimize ();
- }
- else
- expand_deferred_fns ();
+ cgraph_finalize_compilation_unit ();
+ cgraph_optimize ();
if (static_ctors)
{
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);
- }
- }
}
/* Called during diagnostic message formatting process to print a
c_tree_printer (pretty_printer *pp, text_info *text)
{
tree t = va_arg (*text->args_ptr, tree);
+ const char *n = "({anonymous})";
switch (*text->format_spec)
{
case 'D':
case 'F':
+ if (DECL_NAME (t))
+ n = (*lang_hooks.decl_printable_name) (t, 2);
+ break;
+
case 'T':
- {
- const char *n = DECL_NAME (t)
- ? (*lang_hooks.decl_printable_name) (t, 2)
- : "({anonymous})";
- pp_string (pp, n);
- }
- return true;
+ if (TREE_CODE (t) == TYPE_DECL)
+ {
+ if (DECL_NAME (t))
+ n = (*lang_hooks.decl_printable_name) (t, 2);
+ }
+ else
+ {
+ t = TYPE_NAME (t);
+ if (t)
+ n = IDENTIFIER_POINTER (t);
+ }
+ break;
case 'E':
- if (TREE_CODE (t) == IDENTIFIER_NODE)
- {
- pp_string (pp, IDENTIFIER_POINTER (t));
- return true;
- }
- return false;
+ if (TREE_CODE (t) == IDENTIFIER_NODE)
+ n = IDENTIFIER_POINTER (t);
+ else
+ return false;
+ break;
default:
return false;
}
+
+ pp_string (pp, n);
+ return true;
+}
+
+tree
+c_objc_common_truthvalue_conversion (tree expr)
+{
+ retry:
+ switch (TREE_CODE (TREE_TYPE (expr)))
+ {
+ case ARRAY_TYPE:
+ expr = default_conversion (expr);
+ if (TREE_CODE (TREE_TYPE (expr)) != ARRAY_TYPE)
+ goto retry;
+
+ error ("used array that cannot be converted to pointer where scalar is required");
+ return error_mark_node;
+
+ case RECORD_TYPE:
+ error ("used struct type value where scalar is required");
+ return error_mark_node;
+
+ case UNION_TYPE:
+ error ("used union type value where scalar is required");
+ return error_mark_node;
+ default:
+ break;
+ }
+
+ return c_common_truthvalue_conversion (expr);
}
-#include "gt-c-objc-common.h"
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