X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fc-objc-common.c;h=274f2701c960d44a26be163fd2b1356221071164;hb=afb8cabf7ff84281c94922e3d2a7e6eb73e6b157;hp=36b5db4340b9620f14611caaa8cb1c063c6e59a4;hpb=8d58a5a7900f5543f186d868d265d75be0f09cdc;p=pf3gnuchains%2Fgcc-fork.git

diff --git a/gcc/c-objc-common.c b/gcc/c-objc-common.c
index 36b5db4340b..274f2701c96 100644
--- a/gcc/c-objc-common.c
+++ b/gcc/c-objc-common.c
@@ -1,11 +1,11 @@
 /* Some code common to C and ObjC front ends.
-   Copyright (C) 2001 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
 GCC is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
 version.
 
 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
@@ -14,18 +14,19 @@ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 for more details.
 
 You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING.  If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.  */
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
 
 #include "config.h"
 #include "system.h"
+#include "coretypes.h"
+#include "tm.h"
 #include "tree.h"
 #include "rtl.h"
 #include "insn-config.h"
 #include "integrate.h"
-#include "expr.h"
 #include "c-tree.h"
+#include "c-pretty-print.h"
 #include "function.h"
 #include "flags.h"
 #include "toplev.h"
@@ -34,186 +35,25 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include "varray.h"
 #include "ggc.h"
 #include "langhooks.h"
+#include "tree-mudflap.h"
+#include "target.h"
+#include "c-objc-common.h"
 
-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 bool c_tree_printer (pretty_printer *, text_info *, const char *,
+			    int, bool, bool, bool);
 
-static varray_type deferred_fns;
-
-int
-c_missing_noreturn_ok_p (decl)
-     tree decl;
+bool
+c_missing_noreturn_ok_p (tree decl)
 {
   /* A missing noreturn is not ok for freestanding implementations and
      ok for the `main' function in hosted implementations.  */
   return flag_hosted && MAIN_NAME_P (DECL_ASSEMBLER_NAME (decl));
 }
 
-/* We want to inline `extern inline' functions even if this would
-   violate inlining limits.  Some glibc and linux constructs depend on
-   such functions always being inlined when optimizing.  */
-
-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);
-}
-
-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;
-
-      /* 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_VARARGS_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 behaviour.  */
-      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
-	  && 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 a function has pending sizes, we must not defer its
-     compilation, and we can't inline it as a tree.  */
-  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 a nested function has pending sizes, we may have already
-         saved them.  */
-      if (DECL_LANG_SPECIFIC (fn)->pending_sizes)
-	{
-	  DECL_UNINLINABLE (fn) = 1;
-	  return 1;
-	}
-    }
-  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 (walk_tree (&DECL_SAVED_TREE (fn), inline_forbidden_p, fn, NULL))
-    {
-      DECL_UNINLINABLE (fn) = 1;
-      return 1;
-    }
-
-  return 0;
-}
-
 /* Called from check_global_declarations.  */
 
 bool
-c_warn_unused_global_decl (decl)
-     tree decl;
+c_warn_unused_global_decl (const_tree decl)
 {
   if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl))
     return false;
@@ -224,195 +64,136 @@ c_warn_unused_global_decl (decl)
 }
 
 /* Initialization common to C and Objective-C front ends.  */
-const char *
-c_objc_common_init (filename)
-     const char *filename;
+bool
+c_objc_common_init (void)
 {
   c_init_decl_processing ();
 
-  filename = c_common_init (filename);
-  if (filename == NULL)
-    return NULL;
-
-  save_lang_status = &push_c_function_context;
-  restore_lang_status = &pop_c_function_context;
-  mark_lang_status = &mark_c_function_context;
-  lang_expand_decl_stmt = c_expand_decl_stmt;
+  if (c_common_init () == false)
+    return false;
 
   /* These were not defined in the Objective-C front end, but I'm
      putting them here anyway.  The diagnostic format decoder might
      want an enhanced ObjC implementation.  */
   diagnostic_format_decoder (global_dc) = &c_tree_printer;
-  lang_missing_noreturn_ok_p = &c_missing_noreturn_ok_p;
-
-  /* If still unspecified, make it match -std=c99
-     (allowing for -pedantic-errors).  */
-  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, "deferred_fns");
-  ggc_add_tree_varray_root (&deferred_fns, 1);
-
-  return filename;
+  return true;
 }
 
-/* Register a function tree, so that its optimization and conversion
-   to RTL is only done at the end of the compilation.  */
+/* Called during diagnostic message formatting process to print a
+   source-level entity onto BUFFER.  The meaning of the format specifiers
+   is as follows:
+   %D: a general decl,
+   %E: an identifier or expression,
+   %F: a function declaration,
+   %T: a type.
 
-int
-defer_fn (fn)
-     tree fn;
+   These format specifiers form a subset of the format specifiers set used
+   by the C++ front-end.
+   Please notice when called, the `%' part was already skipped by the
+   diagnostic machinery.  */
+static bool
+c_tree_printer (pretty_printer *pp, text_info *text, const char *spec,
+		int precision, bool wide, bool set_locus, bool hash)
 {
-  VARRAY_PUSH_TREE (deferred_fns, fn);
-
-  return 1;
-}
+  tree t = va_arg (*text->args_ptr, tree);
+  tree name;
+  const char *n = "({anonymous})";
+  c_pretty_printer *cpp = (c_pretty_printer *) pp;
+  pp->padding = pp_none;
 
-/* Expand deferred functions for C and ObjC.  */
+  if (precision != 0 || wide || hash)
+    return false;
 
-static void
-expand_deferred_fns ()
-{
-  unsigned int i;
+  if (set_locus && text->locus)
+    *text->locus = DECL_SOURCE_LOCATION (t);
 
-  for (i = 0; i < VARRAY_ACTIVE_SIZE (deferred_fns); i++)
+  switch (*spec)
     {
-      tree decl = VARRAY_TREE (deferred_fns, i);
-
-      if (! TREE_ASM_WRITTEN (decl))
+    case 'D':
+      if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t))
 	{
-	  /* 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);
+	  t = DECL_DEBUG_EXPR (t);
+	  if (!DECL_P (t))
+	    {
+	      pp_c_expression (cpp, t);
+	      return true;
+	    }
 	}
-    }
+      /* FALLTHRU */
 
-  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;
+    case 'F':
+      if (DECL_NAME (t))
+	n = lang_hooks.decl_printable_name (t, 2);
+      break;
 
-  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 ();
+    case 'T':
+      gcc_assert (TYPE_P (t));
+      name = TYPE_NAME (t);
 
-  current_function_cannot_inline
-    = "static constructors and destructors cannot be inlined";
+      if (name && TREE_CODE (name) == TYPE_DECL)
+	{
+	  if (DECL_NAME (name))
+	    pp_string (cpp, lang_hooks.decl_printable_name (name, 2));
+	  else
+	    pp_type_id (cpp, t);
+	  return true;
+	}
+      else
+	{
+	  pp_type_id (cpp, t);
+	  return true;
+	}
+      break;
 
-  body = c_begin_compound_stmt ();
+    case 'E':
+      if (TREE_CODE (t) == IDENTIFIER_NODE)
+	n = IDENTIFIER_POINTER (t);
+      else
+	{
+	  pp_expression (cpp, t);
+	  return true;
+	}
+      break;
 
-  pushlevel (0);
-  clear_last_expr ();
-  add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
+    default:
+      return false;
+    }
 
-  return body;
+  pp_string (cpp, n);
+  return true;
 }
 
-static void
-finish_cdtor (body)
-     tree body;
+/* In C and ObjC, all decls have "C" linkage.  */
+bool
+has_c_linkage (const_tree decl ATTRIBUTE_UNUSED)
 {
-  tree scope;
-  tree block;
-
-  scope = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/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);
+  return true;
 }
 
-/* Called at end of parsing, but before end-of-file processing.  */
-
 void
-c_objc_common_finish_file ()
+c_initialize_diagnostics (diagnostic_context *context)
 {
-  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);
-      }
-  }
+  pretty_printer *base = context->printer;
+  c_pretty_printer *pp = XNEW (c_pretty_printer);
+  memcpy (pp_base (pp), base, sizeof (pretty_printer));
+  pp_c_pretty_printer_init (pp);
+  context->printer = (pretty_printer *) pp;
+
+  /* It is safe to free this object because it was previously XNEW()'d.  */
+  XDELETE (base);
 }
 
-/* Called during diagnostic message formatting process to print a
-   source-level entity onto BUFFER.  The meaning of the format specifiers
-   is as follows:
-   %D: a general decl,
-   %F: a function declaration,
-   %T: a type.
-
-   These format specifiers form a subset of the format specifiers set used
-   by the C++ front-end.
-   Please notice when called, the `%' part was already skipped by the
-   diagnostic machinery.  */
-static int
-c_tree_printer (buffer)
-     output_buffer *buffer;
+int
+c_types_compatible_p (tree x, tree y)
 {
-  tree t = va_arg (output_buffer_format_args (buffer), tree);
+  return comptypes (TYPE_MAIN_VARIANT (x), TYPE_MAIN_VARIANT (y));
+}
 
-  switch (*output_buffer_text_cursor (buffer))
-    {
-    case 'D':
-    case 'F':
-    case 'T':
-      {
-        const char *n = DECL_NAME (t)
-          ? (*lang_hooks.decl_printable_name) (t, 2)
-          : "({anonymous})";
-        output_add_string (buffer, n);
-      }
-      return 1;
+/* Determine if the type is a vla type for the backend.  */
 
-    default:
-      return 0;
-    }
+bool
+c_vla_unspec_p (tree x, tree fn ATTRIBUTE_UNUSED)
+{
+  return c_vla_type_p (x);
 }