/* Handle the hair of processing (but not expanding) inline functions.
Also manage function and variable name overloading.
Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
+ Free Software Foundation, Inc.
Contributed by Michael Tiemann (tiemann@cygnus.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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* Handle method declarations. */
#include "target.h"
#include "tree-pass.h"
#include "diagnostic.h"
+#include "cgraph.h"
/* Various flags to control the mangling process. */
static void do_build_assign_ref (tree);
static void do_build_copy_constructor (tree);
static tree synthesize_exception_spec (tree, tree (*) (tree, void *), void *);
-static tree locate_dtor (tree, void *);
-static tree locate_ctor (tree, void *);
-static tree locate_copy (tree, void *);
static tree make_alias_for_thunk (tree);
/* Called once to initialize method.c. */
TREE_READONLY (thunk) = TREE_READONLY (function);
TREE_THIS_VOLATILE (thunk) = TREE_THIS_VOLATILE (function);
TREE_PUBLIC (thunk) = TREE_PUBLIC (function);
- if (flag_weak)
- comdat_linkage (thunk);
SET_DECL_THUNK_P (thunk, this_adjusting);
THUNK_TARGET (thunk) = function;
THUNK_FIXED_OFFSET (thunk) = d;
DECL_DECLARED_INLINE_P (thunk) = 0;
/* Nor has it been deferred. */
DECL_DEFERRED_FN (thunk) = 0;
+ /* Nor is it a template instantiation. */
+ DECL_USE_TEMPLATE (thunk) = 0;
+ DECL_TEMPLATE_INFO (thunk) = NULL;
/* Add it to the list of thunks associated with FUNCTION. */
TREE_CHAIN (thunk) = DECL_THUNKS (function);
{
if (this_adjusting)
/* Adjust the pointer by the constant. */
- ptr = fold_build2 (PLUS_EXPR, TREE_TYPE (ptr), ptr,
- ssize_int (fixed_offset));
+ ptr = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (ptr), ptr,
+ size_int (fixed_offset));
/* If there's a virtual offset, look up that value in the vtable and
adjust the pointer again. */
/* Form the vtable address. */
vtable = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (vtable)), vtable);
/* Find the entry with the vcall offset. */
- vtable = build2 (PLUS_EXPR, TREE_TYPE (vtable), vtable, virtual_offset);
+ vtable = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (vtable), vtable,
+ fold_convert (sizetype, virtual_offset));
/* Get the offset itself. */
vtable = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (vtable)), vtable);
/* Adjust the `this' pointer. */
- ptr = fold_build2 (PLUS_EXPR, TREE_TYPE (ptr), ptr, vtable);
+ ptr = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (ptr), ptr,
+ fold_convert (sizetype, vtable));
}
if (!this_adjusting)
/* Adjust the pointer by the constant. */
- ptr = fold_build2 (PLUS_EXPR, TREE_TYPE (ptr), ptr,
- ssize_int (fixed_offset));
+ ptr = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (ptr), ptr,
+ size_int (fixed_offset));
return ptr;
}
DECL_VISIBILITY (thunk_fndecl) = DECL_VISIBILITY (function);
DECL_VISIBILITY_SPECIFIED (thunk_fndecl)
= DECL_VISIBILITY_SPECIFIED (function);
- if (flag_weak && TREE_PUBLIC (thunk_fndecl))
- comdat_linkage (thunk_fndecl);
+ if (DECL_ONE_ONLY (function))
+ make_decl_one_only (thunk_fndecl);
if (flag_syntax_only)
{
}
}
- /* The back-end expects DECL_INITIAL to contain a BLOCK, so we
- create one. */
- DECL_INITIAL (thunk_fndecl) = make_node (BLOCK);
-
/* Set up cloned argument trees for the thunk. */
t = NULL_TREE;
for (a = DECL_ARGUMENTS (function); a; a = TREE_CHAIN (a))
TREE_CHAIN (x) = t;
DECL_CONTEXT (x) = thunk_fndecl;
SET_DECL_RTL (x, NULL_RTX);
+ DECL_HAS_VALUE_EXPR_P (x) = 0;
t = x;
}
a = nreverse (t);
DECL_ARGUMENTS (thunk_fndecl) = a;
- BLOCK_VARS (DECL_INITIAL (thunk_fndecl)) = a;
if (this_adjusting
&& targetm.asm_out.can_output_mi_thunk (thunk_fndecl, fixed_offset,
virtual_value, alias))
{
const char *fnname;
+ tree fn_block;
+
current_function_decl = thunk_fndecl;
DECL_RESULT (thunk_fndecl)
= build_decl (RESULT_DECL, 0, integer_type_node);
- fnname = XSTR (XEXP (DECL_RTL (thunk_fndecl), 0), 0);
+ fnname = IDENTIFIER_POINTER (DECL_NAME (thunk_fndecl));
+ /* The back end expects DECL_INITIAL to contain a BLOCK, so we
+ create one. */
+ fn_block = make_node (BLOCK);
+ BLOCK_VARS (fn_block) = a;
+ DECL_INITIAL (thunk_fndecl) = fn_block;
init_function_start (thunk_fndecl);
- current_function_is_thunk = 1;
+ crtl->is_thunk = 1;
assemble_start_function (thunk_fndecl, fnname);
targetm.asm_out.output_mi_thunk (asm_out_file, thunk_fndecl,
assemble_end_function (thunk_fndecl, fnname);
init_insn_lengths ();
current_function_decl = 0;
- cfun = 0;
+ set_cfun (NULL);
TREE_ASM_WRITTEN (thunk_fndecl) = 1;
}
else
{
+ int i;
+ tree *argarray = (tree *) alloca (list_length (a) * sizeof (tree));
/* If this is a covariant thunk, or we don't have the necessary
code for efficient thunks, generate a thunk function that
just makes a call to the real function. Unfortunately, this
fixed_offset, virtual_offset);
/* Build up the call to the real function. */
- t = tree_cons (NULL_TREE, t, NULL_TREE);
- for (a = TREE_CHAIN (a); a; a = TREE_CHAIN (a))
- t = tree_cons (NULL_TREE, a, t);
- t = nreverse (t);
- t = build_call (alias, t);
+ argarray[0] = t;
+ for (i = 1, a = TREE_CHAIN (a); a; a = TREE_CHAIN (a), i++)
+ argarray[i] = a;
+ t = build_call_a (alias, i, argarray);
CALL_FROM_THUNK_P (t) = 1;
+ CALL_CANNOT_INLINE_P (t) = 1;
if (VOID_TYPE_P (TREE_TYPE (t)))
finish_expr_stmt (t);
t = build3 (COND_EXPR, TREE_TYPE (t), cond, t,
cp_convert (TREE_TYPE (t), integer_zero_node));
}
- if (IS_AGGR_TYPE (TREE_TYPE (t)))
+ if (MAYBE_CLASS_TYPE_P (TREE_TYPE (t)))
t = build_cplus_new (TREE_TYPE (t), t);
finish_return_stmt (t);
}
pop_deferring_access_checks ();
thunk_fndecl = finish_function (0);
- tree_lowering_passes (thunk_fndecl);
- expand_body (thunk_fndecl);
+ cgraph_add_new_function (thunk_fndecl, false);
}
pop_from_top_level ();
build_tree_list (NULL_TREE,
converted_parm),
base_binfo,
- LOOKUP_NORMAL | LOOKUP_NONVIRTUAL));
+ LOOKUP_NORMAL | LOOKUP_NONVIRTUAL,
+ tf_warning_or_error));
}
/* Assign to each of the non-static data members. */
init = build3 (COMPONENT_REF, expr_type, init, field, NULL_TREE);
if (DECL_NAME (field))
- init = build_modify_expr (comp, NOP_EXPR, init);
+ init = cp_build_modify_expr (comp, NOP_EXPR, init,
+ tf_warning_or_error);
else
init = build2 (MODIFY_EXPR, TREE_TYPE (comp), comp, init);
finish_expr_stmt (init);
if (! context)
push_to_top_level ();
else if (nested)
- push_function_context_to (context);
+ push_function_context ();
input_location = DECL_SOURCE_LOCATION (fndecl);
tree arg_chain = FUNCTION_FIRST_USER_PARMTYPE (fndecl);
if (arg_chain != void_list_node)
do_build_copy_constructor (fndecl);
- else if (TYPE_NEEDS_CONSTRUCTING (current_class_type))
+ else
finish_mem_initializers (NULL_TREE);
}
if (! context)
pop_from_top_level ();
else if (nested)
- pop_function_context_from (context);
+ pop_function_context ();
pop_deferring_access_checks ();
continue;
while (TREE_CODE (type) == ARRAY_TYPE)
type = TREE_TYPE (type);
- if (TREE_CODE (type) != RECORD_TYPE)
+ if (!CLASS_TYPE_P (type))
continue;
fn = (*extractor) (type, client);
/* Locate the dtor of TYPE. */
-static tree
+tree
locate_dtor (tree type, void *client ATTRIBUTE_UNUSED)
{
return CLASSTYPE_DESTRUCTORS (type);
/* Locate the default ctor of TYPE. */
-static tree
+tree
locate_ctor (tree type, void *client ATTRIBUTE_UNUSED)
{
tree fns;
tree fn = OVL_CURRENT (fns);
tree parms = TYPE_ARG_TYPES (TREE_TYPE (fn));
- if (sufficient_parms_p (TREE_CHAIN (parms)))
+ parms = skip_artificial_parms_for (fn, parms);
+
+ if (sufficient_parms_p (parms))
return fn;
}
- return NULL_TREE;
+ gcc_unreachable ();
}
struct copy_data
points to a COPY_DATA holding the name (NULL for the ctor)
and desired qualifiers of the source operand. */
-static tree
+tree
locate_copy (tree type, void *client_)
{
struct copy_data *client = (struct copy_data *)client_;
int excess;
int quals;
- parms = TREE_CHAIN (parms);
+ parms = skip_artificial_parms_for (fn, parms);
if (!parms)
continue;
src_type = non_reference (TREE_VALUE (parms));
+
+ if (src_type == error_mark_node)
+ return NULL_TREE;
+
if (!same_type_ignoring_top_level_qualifiers_p (src_type, type))
continue;
if (!sufficient_parms_p (TREE_CHAIN (parms)))
reference argument or a non-const reference. Returns the
FUNCTION_DECL for the implicitly declared function. */
-tree
+static tree
implicitly_declare_fn (special_function_kind kind, tree type, bool const_p)
{
tree fn;
tree fn_type;
tree raises = empty_except_spec;
tree rhs_parm_type = NULL_TREE;
+ tree this_parm;
tree name;
HOST_WIDE_INT saved_processing_template_decl;
DECL_ASSIGNMENT_OPERATOR_P (fn) = 1;
SET_OVERLOADED_OPERATOR_CODE (fn, NOP_EXPR);
}
- /* Create the argument list. The call to "grokclassfn" will add the
- "this" parameter and any other implicit parameters. */
+
+ /* If pointers to member functions use the least significant bit to
+ indicate whether a function is virtual, ensure a pointer
+ to this function will have that bit clear. */
+ if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn
+ && DECL_ALIGN (fn) < 2 * BITS_PER_UNIT)
+ DECL_ALIGN (fn) = 2 * BITS_PER_UNIT;
+
+ /* Create the explicit arguments. */
if (rhs_parm_type)
{
/* Note that this parameter is *not* marked DECL_ARTIFICIAL; we
DECL_ARGUMENTS (fn) = cp_build_parm_decl (NULL_TREE, rhs_parm_type);
TREE_READONLY (DECL_ARGUMENTS (fn)) = 1;
}
+ /* Add the "this" parameter. */
+ this_parm = build_this_parm (fn_type, TYPE_UNQUALIFIED);
+ TREE_CHAIN (this_parm) = DECL_ARGUMENTS (fn);
+ DECL_ARGUMENTS (fn) = this_parm;
- grokclassfn (type, fn, kind == sfk_destructor ? DTOR_FLAG : NO_SPECIAL,
- TYPE_UNQUALIFIED);
- grok_special_member_properties (fn);
+ grokclassfn (type, fn, kind == sfk_destructor ? DTOR_FLAG : NO_SPECIAL);
set_linkage_according_to_type (type, fn);
rest_of_decl_compilation (fn, toplevel_bindings_p (), at_eof);
DECL_IN_AGGR_P (fn) = 1;
TYPE_METHODS list, which cause the destructor to be emitted
in an incorrect location in the vtable. */
if (warn_abi && DECL_VIRTUAL_P (fn))
- warning (0, "vtable layout for class %qT may not be ABI-compliant"
+ warning (OPT_Wabi, "vtable layout for class %qT may not be ABI-compliant"
"and may change in a future version of GCC due to "
"implicit virtual destructor",
type);
as there are artificial parms in FN. */
tree
-skip_artificial_parms_for (tree fn, tree list)
+skip_artificial_parms_for (const_tree fn, tree list)
{
if (DECL_NONSTATIC_MEMBER_FUNCTION_P (fn))
list = TREE_CHAIN (list);
return list;
}
+/* Given a FUNCTION_DECL FN and a chain LIST, return the number of
+ artificial parms in FN. */
+
+int
+num_artificial_parms_for (const_tree fn)
+{
+ int count = 0;
+
+ if (DECL_NONSTATIC_MEMBER_FUNCTION_P (fn))
+ count++;
+ else
+ return 0;
+
+ if (DECL_HAS_IN_CHARGE_PARM_P (fn))
+ count++;
+ if (DECL_HAS_VTT_PARM_P (fn))
+ count++;
+ return count;
+}
+
+
#include "gt-cp-method.h"
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