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Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/cp/cp-objcp-common.c')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/cp/cp-objcp-common.c | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/cp/cp-objcp-common.c b/gcc-4.2.1-5666.3/gcc/cp/cp-objcp-common.c deleted file mode 100644 index 8e4d91cbc..000000000 --- a/gcc-4.2.1-5666.3/gcc/cp/cp-objcp-common.c +++ /dev/null @@ -1,310 +0,0 @@ -/* Some code common to C++ and ObjC++ front ends. - Copyright (C) 2004 Free Software Foundation, Inc. - Contributed by Ziemowit Laski <zlaski@apple.com> - -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 -version. - -GCC is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -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, 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301, USA. */ - -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "tm.h" -#include "tree.h" -#include "cp-tree.h" -#include "c-common.h" -#include "toplev.h" -#include "langhooks.h" -#include "langhooks-def.h" -#include "diagnostic.h" -#include "debug.h" -#include "cxx-pretty-print.h" -#include "cp-objcp-common.h" - -/* Special routine to get the alias set for C++. */ - -HOST_WIDE_INT -cxx_get_alias_set (tree t) -{ - if (IS_FAKE_BASE_TYPE (t)) - /* The base variant of a type must be in the same alias set as the - complete type. */ - return get_alias_set (TYPE_CONTEXT (t)); - - /* Punt on PMFs until we canonicalize functions properly. */ - if (TYPE_PTRMEMFUNC_P (t)) - return 0; - - return c_common_get_alias_set (t); -} - -/* Called from check_global_declarations. */ - -bool -cxx_warn_unused_global_decl (tree decl) -{ - if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl)) - return false; - if (DECL_IN_SYSTEM_HEADER (decl)) - return false; - - /* Const variables take the place of #defines in C++. */ - if (TREE_CODE (decl) == VAR_DECL && TREE_READONLY (decl)) - return false; - - return true; -} - -/* Langhook for expr_size: Tell the backend that the value of an expression - of non-POD class type does not include any tail padding; a derived class - might have allocated something there. */ - -tree -cp_expr_size (tree exp) -{ - tree type = TREE_TYPE (exp); - - if (CLASS_TYPE_P (type)) - { - /* The backend should not be interested in the size of an expression - of a type with both of these set; all copies of such types must go - through a constructor or assignment op. */ - gcc_assert (!TYPE_HAS_COMPLEX_INIT_REF (type) - || !TYPE_HAS_COMPLEX_ASSIGN_REF (type) - /* But storing a CONSTRUCTOR isn't a copy. */ - || TREE_CODE (exp) == CONSTRUCTOR - /* And, the gimplifier will sometimes make a copy of - an aggregate. In particular, for a case like: - - struct S { S(); }; - struct X { int a; S s; }; - X x = { 0 }; - - the gimplifier will create a temporary with - static storage duration, perform static - initialization of the temporary, and then copy - the result. Since the "s" subobject is never - constructed, this is a valid transformation. */ - || CP_AGGREGATE_TYPE_P (type)); - - /* This would be wrong for a type with virtual bases, but they are - caught by the assert above. */ - return (is_empty_class (type) - ? size_zero_node - : CLASSTYPE_SIZE_UNIT (type)); - } - else - /* Use the default code. */ - return lhd_expr_size (exp); -} - -/* Langhook for tree_size: determine size of our 'x' and 'c' nodes. */ -size_t -cp_tree_size (enum tree_code code) -{ - switch (code) - { - case TINST_LEVEL: return sizeof (struct tinst_level_s); - case PTRMEM_CST: return sizeof (struct ptrmem_cst); - case BASELINK: return sizeof (struct tree_baselink); - case TEMPLATE_PARM_INDEX: return sizeof (template_parm_index); - case DEFAULT_ARG: return sizeof (struct tree_default_arg); - case OVERLOAD: return sizeof (struct tree_overload); - default: - gcc_unreachable (); - } - /* NOTREACHED */ -} - -/* Returns true if T is a variably modified type, in the sense of C99. - FN is as passed to variably_modified_p. - This routine needs only check cases that cannot be handled by the - language-independent logic in tree.c. */ - -bool -cp_var_mod_type_p (tree type, tree fn) -{ - /* If TYPE is a pointer-to-member, it is variably modified if either - the class or the member are variably modified. */ - if (TYPE_PTR_TO_MEMBER_P (type)) - return (variably_modified_type_p (TYPE_PTRMEM_CLASS_TYPE (type), fn) - || variably_modified_type_p (TYPE_PTRMEM_POINTED_TO_TYPE (type), - fn)); - - /* All other types are not variably modified. */ - return false; -} - -/* Construct a C++-aware pretty-printer for CONTEXT. It is assumed - that CONTEXT->printer is an already constructed basic pretty_printer. */ -void -cxx_initialize_diagnostics (diagnostic_context *context) -{ - pretty_printer *base = context->printer; - cxx_pretty_printer *pp = XNEW (cxx_pretty_printer); - memcpy (pp_base (pp), base, sizeof (pretty_printer)); - pp_cxx_pretty_printer_init (pp); - context->printer = (pretty_printer *) pp; - - /* It is safe to free this object because it was previously malloc()'d. */ - free (base); -} - -/* This compares two types for equivalence ("compatible" in C-based languages). - This routine should only return 1 if it is sure. It should not be used - in contexts where erroneously returning 0 causes problems. */ - -int -cxx_types_compatible_p (tree x, tree y) -{ - if (same_type_ignoring_top_level_qualifiers_p (x, y)) - return 1; - - /* Once we get to the middle-end, references and pointers are - interchangeable. FIXME should we try to replace all references with - pointers? */ - if (POINTER_TYPE_P (x) && POINTER_TYPE_P (y) - && TYPE_MODE (x) == TYPE_MODE (y) - && TYPE_REF_CAN_ALIAS_ALL (x) == TYPE_REF_CAN_ALIAS_ALL (y) - && same_type_p (TREE_TYPE (x), TREE_TYPE (y))) - return 1; - - return 0; -} - -tree -cxx_staticp (tree arg) -{ - switch (TREE_CODE (arg)) - { - case BASELINK: - return staticp (BASELINK_FUNCTIONS (arg)); - - default: - break; - } - - return NULL_TREE; -} - -/* Stubs to keep c-opts.c happy. */ -void -push_file_scope (void) -{ -} - -void -pop_file_scope (void) -{ -} - -/* c-pragma.c needs to query whether a decl has extern "C" linkage. */ -bool -has_c_linkage (tree decl) -{ - return DECL_EXTERN_C_P (decl); -} - -/* APPLE LOCAL begin kext identify vtables */ -/* Return true if t is a vtable. In kexts (only) these may - be overridden by other modules, so we can't do the - normal optimizations we do on initialized const objects. */ -int -cp_vtable_p (tree t) -{ - if (TREE_CODE (t) == VAR_DECL - && TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE - && TREE_TYPE (TREE_TYPE (t)) == vtable_entry_type) - return 1; - return 0; -} -/* APPLE LOCAL end kext identify vtables */ - -static GTY ((if_marked ("tree_map_marked_p"), param_is (struct tree_map))) - htab_t shadowed_var_for_decl; - -/* Lookup a shadowed var for FROM, and return it if we find one. */ - -tree -decl_shadowed_for_var_lookup (tree from) -{ - struct tree_map *h, in; - in.from = from; - - h = (struct tree_map *) htab_find_with_hash (shadowed_var_for_decl, &in, - htab_hash_pointer (from)); - if (h) - return h->to; - return NULL_TREE; -} - -/* Insert a mapping FROM->TO in the shadowed var hashtable. */ - -void -decl_shadowed_for_var_insert (tree from, tree to) -{ - struct tree_map *h; - void **loc; - - h = GGC_NEW (struct tree_map); - h->hash = htab_hash_pointer (from); - h->from = from; - h->to = to; - loc = htab_find_slot_with_hash (shadowed_var_for_decl, h, h->hash, INSERT); - *(struct tree_map **) loc = h; -} - -void -init_shadowed_var_for_decl (void) -{ - shadowed_var_for_decl = htab_create_ggc (512, tree_map_hash, - tree_map_eq, 0); -} - -/* APPLE LOCAL begin radar 5741070 */ -/* Given an IDENTIFIER tree for a class interface, find (if possible) and - return the record type for the class interface. */ - -tree -c_return_interface_record_type (tree typename) -{ - enum tree_code_class class; - enum tree_code code; - tree retval = NULL; - - if (typename == NULL) - return retval; - - code = TREE_CODE (typename); - class = TREE_CODE_CLASS (code); - - if (code != IDENTIFIER_NODE - || class != tcc_exceptional) - return retval; - - if (TREE_TYPE (typename) - && TREE_CODE (TREE_TYPE (typename)) == RECORD_TYPE) - retval = TREE_TYPE (typename); - - if (retval - && TREE_CODE (retval) != RECORD_TYPE) - retval = NULL; - - return retval; -} -/* APPLE LOCAL end radar 5741070 */ - -#include "gt-cp-cp-objcp-common.h" |