X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fc-objc-common.c;h=d6729ac5d0fc254b1d8943720af045c9342968cc;hb=c441a67e6481a9ff7ee7597472a3f9e7c2c79a50;hp=be3b847facd8f9b5164b7b1bc3472a1a80fc77dc;hpb=78c551ad15a1d280f5f6ac71f60a78b87b856496;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/c-objc-common.c b/gcc/c-objc-common.c index be3b847facd..d6729ac5d0f 100644 --- a/gcc/c-objc-common.c +++ b/gcc/c-objc-common.c @@ -1,11 +1,12 @@ /* Some code common to C and ObjC front ends. - Copyright (C) 2001 Free Software Foundation, Inc. + Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, + 2009 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 @@ -14,226 +15,78 @@ 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 +. */ #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 "intl.h" +#include "c-pretty-print.h" #include "function.h" #include "flags.h" #include "toplev.h" #include "diagnostic.h" #include "tree-inline.h" - -static int c_tree_printer PARAMS ((output_buffer *)); -static tree inline_forbidden_p PARAMS ((tree *, int *, void *)); - -int -c_missing_noreturn_ok_p (decl) - tree decl; +#include "varray.h" +#include "ggc.h" +#include "langhooks.h" +#include "tree-mudflap.h" +#include "target.h" +#include "c-objc-common.h" + +static bool c_tree_printer (pretty_printer *, text_info *, const char *, + int, bool, bool, bool); + +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; -{ - return DECL_DECLARED_INLINE_P (fn) && DECL_EXTERNAL (fn); -} +/* Called from check_global_declarations. */ -static tree -inline_forbidden_p (nodep, walk_subtrees, fn) - tree *nodep; - int *walk_subtrees ATTRIBUTE_UNUSED; - void *fn; +bool +c_warn_unused_global_decl (const_tree decl) { - 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; - } + if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl)) + return false; + if (DECL_IN_SYSTEM_HEADER (decl)) + return false; - return NULL_TREE; -} - -int -c_cannot_inline_tree_fn (fnp) - tree *fnp; -{ - tree fn = *fnp; - tree t; - - 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; + return true; } /* 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); - - 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; + 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; - } - return filename; + return true; } /* 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. @@ -241,26 +94,107 @@ c_objc_common_init (filename) 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; +static bool +c_tree_printer (pretty_printer *pp, text_info *text, const char *spec, + int precision, bool wide, bool set_locus, bool hash) { - tree t = va_arg (output_buffer_format_args (buffer), tree); + tree t = va_arg (*text->args_ptr, tree); + tree name; + c_pretty_printer *cpp = (c_pretty_printer *) pp; + pp->padding = pp_none; - switch (*output_buffer_text_cursor (buffer)) + if (precision != 0 || wide || hash) + return false; + + if (set_locus && text->locus) + *text->locus = DECL_SOURCE_LOCATION (t); + + switch (*spec) { case 'D': + if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t)) + { + t = DECL_DEBUG_EXPR (t); + if (!DECL_P (t)) + { + pp_c_expression (cpp, t); + return true; + } + } + /* FALLTHRU */ + case 'F': + if (DECL_NAME (t)) + { + pp_identifier (cpp, lang_hooks.decl_printable_name (t, 2)); + return true; + } + break; + case 'T': - { - const char *n = DECL_NAME (t) - ? (*decl_printable_name) (t, 2) - : "({anonymous})"; - output_add_string (buffer, n); - } - return 1; + gcc_assert (TYPE_P (t)); + name = TYPE_NAME (t); + + if (name && TREE_CODE (name) == TYPE_DECL) + { + if (DECL_NAME (name)) + pp_identifier (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; + + case 'E': + if (TREE_CODE (t) == IDENTIFIER_NODE) + pp_identifier (cpp, IDENTIFIER_POINTER (t)); + else + pp_expression (cpp, t); + return true; default: - return 0; + return false; } + + pp_string (cpp, _("({anonymous})")); + return true; +} + +/* In C and ObjC, all decls have "C" linkage. */ +bool +has_c_linkage (const_tree decl ATTRIBUTE_UNUSED) +{ + return true; +} + +void +c_initialize_diagnostics (diagnostic_context *context) +{ + 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); +} + +int +c_types_compatible_p (tree x, tree y) +{ + return comptypes (TYPE_MAIN_VARIANT (x), TYPE_MAIN_VARIANT (y)); +} + +/* Determine if the type is a vla type for the backend. */ + +bool +c_vla_unspec_p (tree x, tree fn ATTRIBUTE_UNUSED) +{ + return c_vla_type_p (x); }