bool
i386_pe_type_dllexport_p (tree decl)
{
gcc_assert (TREE_CODE (decl) == VAR_DECL
|| TREE_CODE (decl) == FUNCTION_DECL);
/* Avoid exporting compiler-generated default dtors and copy ctors.
The only artificial methods that need to be exported are virtual
and non-virtual thunks. */
if (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE
&& DECL_ARTIFICIAL (decl) && !DECL_THUNK_P (decl))
return false;
return true;
}
static tree
cp_genericize_r (tree *stmt_p, int *walk_subtrees, void *data)
{
tree stmt = *stmt_p;
struct pointer_set_t *p_set = (struct pointer_set_t*) data;
if (is_invisiref_parm (stmt)
/* Don't dereference parms in a thunk, pass the references through. */
&& !(DECL_THUNK_P (current_function_decl)
&& TREE_CODE (stmt) == PARM_DECL))
{
*stmt_p = convert_from_reference (stmt);
*walk_subtrees = 0;
return NULL;
}
/* Other than invisiref parms, don't walk the same tree twice. */
if (pointer_set_contains (p_set, stmt))
{
*walk_subtrees = 0;
return NULL_TREE;
}
if (TREE_CODE (stmt) == ADDR_EXPR
&& is_invisiref_parm (TREE_OPERAND (stmt, 0)))
{
*stmt_p = convert (TREE_TYPE (stmt), TREE_OPERAND (stmt, 0));
*walk_subtrees = 0;
}
else if (TREE_CODE (stmt) == RETURN_EXPR
&& TREE_OPERAND (stmt, 0)
&& is_invisiref_parm (TREE_OPERAND (stmt, 0)))
/* Don't dereference an invisiref RESULT_DECL inside a RETURN_EXPR. */
*walk_subtrees = 0;
else if (IS_TYPE_OR_DECL_P (stmt))
*walk_subtrees = 0;
/* Due to the way voidify_wrapper_expr is written, we don't get a chance
to lower this construct before scanning it, so we need to lower these
before doing anything else. */
else if (TREE_CODE (stmt) == CLEANUP_STMT)
*stmt_p = build2 (CLEANUP_EH_ONLY (stmt) ? TRY_CATCH_EXPR
: TRY_FINALLY_EXPR,
void_type_node,
CLEANUP_BODY (stmt),
CLEANUP_EXPR (stmt));
pointer_set_insert (p_set, *stmt_p);
return NULL;
}
void
finish_thunk (tree thunk)
{
tree function, name;
tree fixed_offset = ssize_int (THUNK_FIXED_OFFSET (thunk));
tree virtual_offset = THUNK_VIRTUAL_OFFSET (thunk);
gcc_assert (!DECL_NAME (thunk) && DECL_THUNK_P (thunk));
if (virtual_offset && DECL_RESULT_THUNK_P (thunk))
virtual_offset = BINFO_VPTR_FIELD (virtual_offset);
function = THUNK_TARGET (thunk);
name = mangle_thunk (function, DECL_THIS_THUNK_P (thunk),
fixed_offset, virtual_offset);
/* We can end up with declarations of (logically) different
covariant thunks, that do identical adjustments. The two thunks
will be adjusting between within different hierarchies, which
happen to have the same layout. We must nullify one of them to
refer to the other. */
if (DECL_RESULT_THUNK_P (thunk))
{
tree cov_probe;
for (cov_probe = DECL_THUNKS (function);
cov_probe; cov_probe = TREE_CHAIN (cov_probe))
if (DECL_NAME (cov_probe) == name)
{
gcc_assert (!DECL_THUNKS (thunk));
THUNK_ALIAS (thunk) = (THUNK_ALIAS (cov_probe)
? THUNK_ALIAS (cov_probe) : cov_probe);
break;
}
}
DECL_NAME (thunk) = name;
SET_DECL_ASSEMBLER_NAME (thunk, name);
}
bool
cp_dump_tree (void* dump_info, tree t)
{
enum tree_code code;
dump_info_p di = (dump_info_p) dump_info;
/* Figure out what kind of node this is. */
code = TREE_CODE (t);
if (DECL_P (t))
{
if (DECL_LANG_SPECIFIC (t) && DECL_LANGUAGE (t) != lang_cplusplus)
dump_string (di, language_to_string (DECL_LANGUAGE (t)));
}
switch (code)
{
case IDENTIFIER_NODE:
if (IDENTIFIER_OPNAME_P (t))
{
dump_string (di, "operator");
return true;
}
else if (IDENTIFIER_TYPENAME_P (t))
{
dump_child ("tynm", TREE_TYPE (t));
return true;
}
break;
case OFFSET_TYPE:
dump_string (di, "ptrmem");
dump_child ("ptd", TYPE_PTRMEM_POINTED_TO_TYPE (t));
dump_child ("cls", TYPE_PTRMEM_CLASS_TYPE (t));
return true;
case RECORD_TYPE:
if (TYPE_PTRMEMFUNC_P (t))
{
dump_string (di, "ptrmem");
dump_child ("ptd", TYPE_PTRMEM_POINTED_TO_TYPE (t));
dump_child ("cls", TYPE_PTRMEM_CLASS_TYPE (t));
return true;
}
/* Fall through. */
case UNION_TYPE:
/* Is it a type used as a base? */
if (TYPE_CONTEXT (t) && TREE_CODE (TYPE_CONTEXT (t)) == TREE_CODE (t)
&& CLASSTYPE_AS_BASE (TYPE_CONTEXT (t)) == t)
{
dump_child ("bfld", TYPE_CONTEXT (t));
return true;
}
if (! IS_AGGR_TYPE (t))
break;
dump_child ("vfld", TYPE_VFIELD (t));
if (CLASSTYPE_TEMPLATE_SPECIALIZATION(t))
dump_string(di, "spec");
if (!dump_flag (di, TDF_SLIM, t) && TYPE_BINFO (t))
{
int i;
tree binfo;
tree base_binfo;
for (binfo = TYPE_BINFO (t), i = 0;
BINFO_BASE_ITERATE (binfo, i, base_binfo); ++i)
{
dump_child ("base", BINFO_TYPE (base_binfo));
if (BINFO_VIRTUAL_P (base_binfo))
dump_string (di, "virtual");
dump_access (di, base_binfo);
}
}
break;
case FIELD_DECL:
dump_access (di, t);
if (DECL_MUTABLE_P (t))
dump_string(di, "mutable");
break;
case VAR_DECL:
if (TREE_CODE (CP_DECL_CONTEXT (t)) == RECORD_TYPE)
dump_access (di, t);
if (TREE_STATIC (t) && !TREE_PUBLIC (t))
dump_string (di, "static");
break;
case FUNCTION_DECL:
if (!DECL_THUNK_P (t))
{
if (DECL_OVERLOADED_OPERATOR_P (t)) {
dump_string (di, "operator");
dump_op (di, t);
}
if (DECL_FUNCTION_MEMBER_P (t))
{
dump_string (di, "member");
dump_access (di, t);
}
if (DECL_PURE_VIRTUAL_P (t))
dump_string (di, "pure");
if (DECL_VIRTUAL_P (t))
dump_string (di, "virtual");
if (DECL_CONSTRUCTOR_P (t))
dump_string (di, "constructor");
if (DECL_DESTRUCTOR_P (t))
dump_string (di, "destructor");
if (DECL_CONV_FN_P (t))
dump_string (di, "conversion");
if (DECL_GLOBAL_CTOR_P (t))
dump_string (di, "global init");
if (DECL_GLOBAL_DTOR_P (t))
dump_string (di, "global fini");
if (DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (t))
dump_string (di, "pseudo tmpl");
}
else
{
tree virt = THUNK_VIRTUAL_OFFSET (t);
dump_string (di, "thunk");
if (DECL_THIS_THUNK_P (t))
dump_string (di, "this adjusting");
else
{
dump_string (di, "result adjusting");
if (virt)
virt = BINFO_VPTR_FIELD (virt);
}
dump_int (di, "fixd", THUNK_FIXED_OFFSET (t));
if (virt)
dump_int (di, "virt", tree_low_cst (virt, 0));
dump_child ("fn", DECL_INITIAL (t));
}
break;
case NAMESPACE_DECL:
if (DECL_NAMESPACE_ALIAS (t))
dump_child ("alis", DECL_NAMESPACE_ALIAS (t));
else if (!dump_flag (di, TDF_SLIM, t))
dump_child ("dcls", cp_namespace_decls (t));
break;
case TEMPLATE_DECL:
dump_child ("rslt", DECL_TEMPLATE_RESULT (t));
dump_child ("inst", DECL_TEMPLATE_INSTANTIATIONS (t));
dump_child ("spcs", DECL_TEMPLATE_SPECIALIZATIONS (t));
dump_child ("prms", DECL_TEMPLATE_PARMS (t));
break;
case OVERLOAD:
dump_child ("crnt", OVL_CURRENT (t));
dump_child ("chan", OVL_CHAIN (t));
break;
case TRY_BLOCK:
dump_stmt (di, t);
if (CLEANUP_P (t))
dump_string (di, "cleanup");
dump_child ("body", TRY_STMTS (t));
dump_child ("hdlr", TRY_HANDLERS (t));
break;
case EH_SPEC_BLOCK:
dump_stmt (di, t);
dump_child ("body", EH_SPEC_STMTS (t));
dump_child ("raises", EH_SPEC_RAISES (t));
break;
case PTRMEM_CST:
dump_child ("clas", PTRMEM_CST_CLASS (t));
dump_child ("mbr", PTRMEM_CST_MEMBER (t));
break;
case THROW_EXPR:
/* These nodes are unary, but do not have code class `1'. */
dump_child ("op 0", TREE_OPERAND (t, 0));
break;
case AGGR_INIT_EXPR:
dump_int (di, "ctor", AGGR_INIT_VIA_CTOR_P (t));
dump_child ("fn", TREE_OPERAND (t, 0));
dump_child ("args", TREE_OPERAND (t, 1));
dump_child ("decl", TREE_OPERAND (t, 2));
break;
case HANDLER:
dump_stmt (di, t);
dump_child ("parm", HANDLER_PARMS (t));
dump_child ("body", HANDLER_BODY (t));
break;
case MUST_NOT_THROW_EXPR:
dump_stmt (di, t);
dump_child ("body", TREE_OPERAND (t, 0));
break;
case USING_STMT:
dump_stmt (di, t);
dump_child ("nmsp", USING_STMT_NAMESPACE (t));
break;
case CLEANUP_STMT:
dump_stmt (di, t);
dump_child ("decl", CLEANUP_DECL (t));
dump_child ("expr", CLEANUP_EXPR (t));
dump_child ("body", CLEANUP_BODY (t));
break;
case IF_STMT:
dump_stmt (di, t);
dump_child ("cond", IF_COND (t));
dump_child ("then", THEN_CLAUSE (t));
dump_child ("else", ELSE_CLAUSE (t));
break;
default:
break;
}
return c_dump_tree (di, t);
}
void
use_thunk (tree thunk_fndecl, bool emit_p)
{
tree a, t, function, alias;
tree virtual_offset;
HOST_WIDE_INT fixed_offset, virtual_value;
bool this_adjusting = DECL_THIS_THUNK_P (thunk_fndecl);
/* We should have called finish_thunk to give it a name. */
gcc_assert (DECL_NAME (thunk_fndecl));
/* We should never be using an alias, always refer to the
aliased thunk. */
gcc_assert (!THUNK_ALIAS (thunk_fndecl));
if (TREE_ASM_WRITTEN (thunk_fndecl))
return;
function = THUNK_TARGET (thunk_fndecl);
if (DECL_RESULT (thunk_fndecl))
/* We already turned this thunk into an ordinary function.
There's no need to process this thunk again. */
return;
if (DECL_THUNK_P (function))
/* The target is itself a thunk, process it now. */
use_thunk (function, emit_p);
/* Thunks are always addressable; they only appear in vtables. */
TREE_ADDRESSABLE (thunk_fndecl) = 1;
/* Figure out what function is being thunked to. It's referenced in
this translation unit. */
TREE_ADDRESSABLE (function) = 1;
mark_used (function);
if (!emit_p)
return;
if (TARGET_USE_LOCAL_THUNK_ALIAS_P (function))
alias = make_alias_for_thunk (function);
else
alias = function;
fixed_offset = THUNK_FIXED_OFFSET (thunk_fndecl);
virtual_offset = THUNK_VIRTUAL_OFFSET (thunk_fndecl);
if (virtual_offset)
{
if (!this_adjusting)
virtual_offset = BINFO_VPTR_FIELD (virtual_offset);
virtual_value = tree_low_cst (virtual_offset, /*pos=*/0);
gcc_assert (virtual_value);
}
else
virtual_value = 0;
/* And, if we need to emit the thunk, it's used. */
mark_used (thunk_fndecl);
/* This thunk is actually defined. */
DECL_EXTERNAL (thunk_fndecl) = 0;
/* The linkage of the function may have changed. FIXME in linkage
rewrite. */
TREE_PUBLIC (thunk_fndecl) = TREE_PUBLIC (function);
DECL_VISIBILITY (thunk_fndecl) = DECL_VISIBILITY (function);
DECL_VISIBILITY_SPECIFIED (thunk_fndecl)
= DECL_VISIBILITY_SPECIFIED (function);
if (DECL_ONE_ONLY (function))
make_decl_one_only (thunk_fndecl);
if (flag_syntax_only)
{
TREE_ASM_WRITTEN (thunk_fndecl) = 1;
return;
}
push_to_top_level ();
if (TARGET_USE_LOCAL_THUNK_ALIAS_P (function)
&& targetm.have_named_sections)
{
resolve_unique_section (function, 0, flag_function_sections);
if (DECL_SECTION_NAME (function) != NULL && DECL_ONE_ONLY (function))
{
resolve_unique_section (thunk_fndecl, 0, flag_function_sections);
/* Output the thunk into the same section as function. */
DECL_SECTION_NAME (thunk_fndecl) = DECL_SECTION_NAME (function);
}
}
/* 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 x = copy_node (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;
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);
init_function_start (thunk_fndecl);
current_function_is_thunk = 1;
assemble_start_function (thunk_fndecl, fnname);
targetm.asm_out.output_mi_thunk (asm_out_file, thunk_fndecl,
fixed_offset, virtual_value, alias);
assemble_end_function (thunk_fndecl, fnname);
init_insn_lengths ();
current_function_decl = 0;
cfun = 0;
TREE_ASM_WRITTEN (thunk_fndecl) = 1;
}
else
{
/* 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
doesn't work for varargs. */
if (varargs_function_p (function))
error ("generic thunk code fails for method %q#D which uses %<...%>",
function);
DECL_RESULT (thunk_fndecl) = NULL_TREE;
start_preparsed_function (thunk_fndecl, NULL_TREE, SF_PRE_PARSED);
/* We don't bother with a body block for thunks. */
/* There's no need to check accessibility inside the thunk body. */
push_deferring_access_checks (dk_no_check);
t = a;
if (this_adjusting)
t = thunk_adjust (t, /*this_adjusting=*/1,
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);
CALL_FROM_THUNK_P (t) = 1;
if (VOID_TYPE_P (TREE_TYPE (t)))
finish_expr_stmt (t);
else
{
if (!this_adjusting)
{
tree cond = NULL_TREE;
if (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE)
{
/* If the return type is a pointer, we need to
protect against NULL. We know there will be an
adjustment, because that's why we're emitting a
thunk. */
t = save_expr (t);
cond = cp_convert (boolean_type_node, t);
}
t = thunk_adjust (t, /*this_adjusting=*/0,
fixed_offset, virtual_offset);
if (cond)
t = build3 (COND_EXPR, TREE_TYPE (t), cond, t,
cp_convert (TREE_TYPE (t), integer_zero_node));
}
if (IS_AGGR_TYPE (TREE_TYPE (t)))
t = build_cplus_new (TREE_TYPE (t), t);
finish_return_stmt (t);
}
/* Since we want to emit the thunk, we explicitly mark its name as
referenced. */
mark_decl_referenced (thunk_fndecl);
/* But we don't want debugging information about it. */
DECL_IGNORED_P (thunk_fndecl) = 1;
/* Re-enable access control. */
pop_deferring_access_checks ();
thunk_fndecl = finish_function (0);
tree_lowering_passes (thunk_fndecl);
expand_body (thunk_fndecl);
}
pop_from_top_level ();
}
static tree
cp_genericize_r (tree *stmt_p, int *walk_subtrees, void *data)
{
tree stmt = *stmt_p;
struct pointer_set_t *p_set = (struct pointer_set_t*) data;
if (is_invisiref_parm (stmt)
/* Don't dereference parms in a thunk, pass the references through. */
&& !(DECL_THUNK_P (current_function_decl)
&& TREE_CODE (stmt) == PARM_DECL))
{
*stmt_p = convert_from_reference (stmt);
*walk_subtrees = 0;
return NULL;
}
/* Map block scope extern declarations to visible declarations with the
same name and type in outer scopes if any. */
if (cp_function_chain->extern_decl_map
&& (TREE_CODE (stmt) == FUNCTION_DECL || TREE_CODE (stmt) == VAR_DECL)
&& DECL_EXTERNAL (stmt))
{
struct cxx_int_tree_map *h, in;
in.uid = DECL_UID (stmt);
h = (struct cxx_int_tree_map *)
htab_find_with_hash (cp_function_chain->extern_decl_map,
&in, in.uid);
if (h)
{
*stmt_p = h->to;
*walk_subtrees = 0;
return NULL;
}
}
/* Other than invisiref parms, don't walk the same tree twice. */
if (pointer_set_contains (p_set, stmt))
{
*walk_subtrees = 0;
return NULL_TREE;
}
if (TREE_CODE (stmt) == ADDR_EXPR
&& is_invisiref_parm (TREE_OPERAND (stmt, 0)))
{
*stmt_p = convert (TREE_TYPE (stmt), TREE_OPERAND (stmt, 0));
*walk_subtrees = 0;
}
else if (TREE_CODE (stmt) == RETURN_EXPR
&& TREE_OPERAND (stmt, 0)
&& is_invisiref_parm (TREE_OPERAND (stmt, 0)))
/* Don't dereference an invisiref RESULT_DECL inside a RETURN_EXPR. */
*walk_subtrees = 0;
else if (TREE_CODE (stmt) == OMP_CLAUSE)
switch (OMP_CLAUSE_CODE (stmt))
{
case OMP_CLAUSE_LASTPRIVATE:
/* Don't dereference an invisiref in OpenMP clauses. */
if (is_invisiref_parm (OMP_CLAUSE_DECL (stmt)))
{
*walk_subtrees = 0;
if (OMP_CLAUSE_LASTPRIVATE_STMT (stmt))
cp_walk_tree (&OMP_CLAUSE_LASTPRIVATE_STMT (stmt),
cp_genericize_r, p_set, NULL);
}
break;
case OMP_CLAUSE_PRIVATE:
case OMP_CLAUSE_SHARED:
case OMP_CLAUSE_FIRSTPRIVATE:
case OMP_CLAUSE_COPYIN:
case OMP_CLAUSE_COPYPRIVATE:
/* Don't dereference an invisiref in OpenMP clauses. */
if (is_invisiref_parm (OMP_CLAUSE_DECL (stmt)))
*walk_subtrees = 0;
break;
case OMP_CLAUSE_REDUCTION:
gcc_assert (!is_invisiref_parm (OMP_CLAUSE_DECL (stmt)));
break;
default:
break;
}
else if (IS_TYPE_OR_DECL_P (stmt))
*walk_subtrees = 0;
/* Due to the way voidify_wrapper_expr is written, we don't get a chance
to lower this construct before scanning it, so we need to lower these
before doing anything else. */
else if (TREE_CODE (stmt) == CLEANUP_STMT)
*stmt_p = build2 (CLEANUP_EH_ONLY (stmt) ? TRY_CATCH_EXPR
: TRY_FINALLY_EXPR,
void_type_node,
CLEANUP_BODY (stmt),
CLEANUP_EXPR (stmt));
else if (TREE_CODE (stmt) == IF_STMT)
{
genericize_if_stmt (stmt_p);
/* *stmt_p has changed, tail recurse to handle it again. */
return cp_genericize_r (stmt_p, walk_subtrees, data);
}
/* COND_EXPR might have incompatible types in branches if one or both
arms are bitfields. Fix it up now. */
else if (TREE_CODE (stmt) == COND_EXPR)
{
tree type_left
= (TREE_OPERAND (stmt, 1)
? is_bitfield_expr_with_lowered_type (TREE_OPERAND (stmt, 1))
: NULL_TREE);
tree type_right
= (TREE_OPERAND (stmt, 2)
? is_bitfield_expr_with_lowered_type (TREE_OPERAND (stmt, 2))
: NULL_TREE);
if (type_left
&& !useless_type_conversion_p (TREE_TYPE (stmt),
TREE_TYPE (TREE_OPERAND (stmt, 1))))
{
TREE_OPERAND (stmt, 1)
= fold_convert (type_left, TREE_OPERAND (stmt, 1));
gcc_assert (useless_type_conversion_p (TREE_TYPE (stmt),
type_left));
}
if (type_right
&& !useless_type_conversion_p (TREE_TYPE (stmt),
TREE_TYPE (TREE_OPERAND (stmt, 2))))
{
TREE_OPERAND (stmt, 2)
= fold_convert (type_right, TREE_OPERAND (stmt, 2));
gcc_assert (useless_type_conversion_p (TREE_TYPE (stmt),
type_right));
}
}
pointer_set_insert (p_set, *stmt_p);
return NULL;
}
static tree
cp_genericize_r (tree *stmt_p, int *walk_subtrees, void *data)
{
tree stmt = *stmt_p;
struct cp_genericize_data *wtd = (struct cp_genericize_data *) data;
struct pointer_set_t *p_set = wtd->p_set;
if (is_invisiref_parm (stmt)
/* Don't dereference parms in a thunk, pass the references through. */
&& !(DECL_THUNK_P (current_function_decl)
&& TREE_CODE (stmt) == PARM_DECL))
{
*stmt_p = convert_from_reference (stmt);
*walk_subtrees = 0;
return NULL;
}
/* Map block scope extern declarations to visible declarations with the
same name and type in outer scopes if any. */
if (cp_function_chain->extern_decl_map
&& (TREE_CODE (stmt) == FUNCTION_DECL || TREE_CODE (stmt) == VAR_DECL)
&& DECL_EXTERNAL (stmt))
{
struct cxx_int_tree_map *h, in;
in.uid = DECL_UID (stmt);
h = (struct cxx_int_tree_map *)
htab_find_with_hash (cp_function_chain->extern_decl_map,
&in, in.uid);
if (h)
{
*stmt_p = h->to;
*walk_subtrees = 0;
return NULL;
}
}
/* Other than invisiref parms, don't walk the same tree twice. */
if (pointer_set_contains (p_set, stmt))
{
*walk_subtrees = 0;
return NULL_TREE;
}
if (TREE_CODE (stmt) == ADDR_EXPR
&& is_invisiref_parm (TREE_OPERAND (stmt, 0)))
{
*stmt_p = convert (TREE_TYPE (stmt), TREE_OPERAND (stmt, 0));
*walk_subtrees = 0;
}
else if (TREE_CODE (stmt) == RETURN_EXPR
&& TREE_OPERAND (stmt, 0)
&& is_invisiref_parm (TREE_OPERAND (stmt, 0)))
/* Don't dereference an invisiref RESULT_DECL inside a RETURN_EXPR. */
*walk_subtrees = 0;
else if (TREE_CODE (stmt) == OMP_CLAUSE)
switch (OMP_CLAUSE_CODE (stmt))
{
case OMP_CLAUSE_LASTPRIVATE:
/* Don't dereference an invisiref in OpenMP clauses. */
if (is_invisiref_parm (OMP_CLAUSE_DECL (stmt)))
{
*walk_subtrees = 0;
if (OMP_CLAUSE_LASTPRIVATE_STMT (stmt))
cp_walk_tree (&OMP_CLAUSE_LASTPRIVATE_STMT (stmt),
cp_genericize_r, data, NULL);
}
break;
case OMP_CLAUSE_PRIVATE:
case OMP_CLAUSE_SHARED:
case OMP_CLAUSE_FIRSTPRIVATE:
case OMP_CLAUSE_COPYIN:
case OMP_CLAUSE_COPYPRIVATE:
/* Don't dereference an invisiref in OpenMP clauses. */
if (is_invisiref_parm (OMP_CLAUSE_DECL (stmt)))
*walk_subtrees = 0;
break;
case OMP_CLAUSE_REDUCTION:
gcc_assert (!is_invisiref_parm (OMP_CLAUSE_DECL (stmt)));
break;
default:
break;
}
else if (IS_TYPE_OR_DECL_P (stmt))
*walk_subtrees = 0;
/* Due to the way voidify_wrapper_expr is written, we don't get a chance
to lower this construct before scanning it, so we need to lower these
before doing anything else. */
else if (TREE_CODE (stmt) == CLEANUP_STMT)
*stmt_p = build2 (CLEANUP_EH_ONLY (stmt) ? TRY_CATCH_EXPR
: TRY_FINALLY_EXPR,
void_type_node,
CLEANUP_BODY (stmt),
CLEANUP_EXPR (stmt));
else if (TREE_CODE (stmt) == IF_STMT)
{
genericize_if_stmt (stmt_p);
/* *stmt_p has changed, tail recurse to handle it again. */
return cp_genericize_r (stmt_p, walk_subtrees, data);
}
/* COND_EXPR might have incompatible types in branches if one or both
arms are bitfields.FILE *
my_dump_begin (int phase, int *flag_ptr) Fix it up now. */
else if (TREE_CODE (stmt) == COND_EXPR)
{
tree type_left
= (TREE_OPERAND (stmt, 1)
? is_bitfield_expr_with_lowered_type (TREE_OPERAND (stmt, 1))
: NULL_TREE);
tree type_right
= (TREE_OPERAND (stmt, 2)
? is_bitfield_expr_with_lowered_type (TREE_OPERAND (stmt, 2))
: NULL_TREE);
if (type_left
&& !useless_type_conversion_p (TREE_TYPE (stmt),
TREE_TYPE (TREE_OPERAND (stmt, 1))))
{
TREE_OPERAND (stmt, 1)
= fold_convert (type_left, TREE_OPERAND (stmt, 1));
gcc_assert (useless_type_conversion_p (TREE_TYPE (stmt),
type_left));
}
if (type_right
&& !useless_type_conversion_p (TREE_TYPE (stmt),
TREE_TYPE (TREE_OPERAND (stmt, 2))))
{
TREE_OPERAND (stmt, 2)
= fold_convert (type_right, TREE_OPERAND (stmt, 2));
gcc_assert (useless_type_conversion_p (TREE_TYPE (stmt),
type_right));
}
}
else if (TREE_CODE (stmt) == BIND_EXPR)
{
VEC_safe_push (tree, heap, wtd->bind_expr_stack, stmt);
cp_walk_tree (&BIND_EXPR_BODY (stmt),
cp_genericize_r, data, NULL);
VEC_pop (tree, wtd->bind_expr_stack);
}
else if (TREE_CODE (stmt) == USING_STMT)
{
tree block = NULL_TREE;
/* Get the innermost inclosing GIMPLE_BIND that has a non NULL
BLOCK, and append an IMPORTED_DECL to its
BLOCK_VARS chained list. */
if (wtd->bind_expr_stack)
{
int i;
for (i = VEC_length (tree, wtd->bind_expr_stack) - 1; i >= 0; i--)
if ((block = BIND_EXPR_BLOCK (VEC_index (tree,
wtd->bind_expr_stack, i))))
break;
}
if (block)
{
tree using_directive;
gcc_assert (TREE_OPERAND (stmt, 0));
using_directive = make_node (IMPORTED_DECL);
TREE_TYPE (using_directive) = void_type_node;
IMPORTED_DECL_ASSOCIATED_DECL (using_directive)
= TREE_OPERAND (stmt, 0);
DECL_CHAIN (using_directive) = BLOCK_VARS (block);
BLOCK_VARS (block) = using_directive;
}
/* The USING_STMT won't appear in GENERIC. */
*stmt_p = build1 (NOP_EXPR, void_type_node, integer_zero_node);
*walk_subtrees = 0;
}
else if (TREE_CODE (stmt) == DECL_EXPR
&& TREE_CODE (DECL_EXPR_DECL (stmt)) == USING_DECL)
{
/* Using decls inside DECL_EXPRs are just dropped on the floor. */
*stmt_p = build1 (NOP_EXPR, void_type_node, integer_zero_node);
*walk_subtrees = 0;
}
pointer_set_insert (p_set, *stmt_p);
return NULL;
}
static tree
cp_genericize_r (tree *stmt_p, int *walk_subtrees, void *data)
{
tree stmt = *stmt_p;
struct cp_genericize_data *wtd = (struct cp_genericize_data *) data;
struct pointer_set_t *p_set = wtd->p_set;
/* If in an OpenMP context, note var uses. */
if (__builtin_expect (wtd->omp_ctx != NULL, 0)
&& (VAR_P (stmt)
|| TREE_CODE (stmt) == PARM_DECL
|| TREE_CODE (stmt) == RESULT_DECL)
&& omp_var_to_track (stmt))
omp_cxx_notice_variable (wtd->omp_ctx, stmt);
if (is_invisiref_parm (stmt)
/* Don't dereference parms in a thunk, pass the references through. */
&& !(DECL_THUNK_P (current_function_decl)
&& TREE_CODE (stmt) == PARM_DECL))
{
*stmt_p = convert_from_reference (stmt);
*walk_subtrees = 0;
return NULL;
}
/* Map block scope extern declarations to visible declarations with the
same name and type in outer scopes if any. */
if (cp_function_chain->extern_decl_map
&& VAR_OR_FUNCTION_DECL_P (stmt)
&& DECL_EXTERNAL (stmt))
{
struct cxx_int_tree_map *h, in;
in.uid = DECL_UID (stmt);
h = (struct cxx_int_tree_map *)
htab_find_with_hash (cp_function_chain->extern_decl_map,
&in, in.uid);
if (h)
{
*stmt_p = h->to;
*walk_subtrees = 0;
return NULL;
}
}
/* Other than invisiref parms, don't walk the same tree twice. */
if (pointer_set_contains (p_set, stmt))
{
*walk_subtrees = 0;
return NULL_TREE;
}
if (TREE_CODE (stmt) == ADDR_EXPR
&& is_invisiref_parm (TREE_OPERAND (stmt, 0)))
{
/* If in an OpenMP context, note var uses. */
if (__builtin_expect (wtd->omp_ctx != NULL, 0)
&& omp_var_to_track (TREE_OPERAND (stmt, 0)))
omp_cxx_notice_variable (wtd->omp_ctx, TREE_OPERAND (stmt, 0));
*stmt_p = convert (TREE_TYPE (stmt), TREE_OPERAND (stmt, 0));
*walk_subtrees = 0;
}
else if (TREE_CODE (stmt) == RETURN_EXPR
&& TREE_OPERAND (stmt, 0)
&& is_invisiref_parm (TREE_OPERAND (stmt, 0)))
/* Don't dereference an invisiref RESULT_DECL inside a RETURN_EXPR. */
*walk_subtrees = 0;
else if (TREE_CODE (stmt) == OMP_CLAUSE)
switch (OMP_CLAUSE_CODE (stmt))
{
case OMP_CLAUSE_LASTPRIVATE:
/* Don't dereference an invisiref in OpenMP clauses. */
if (is_invisiref_parm (OMP_CLAUSE_DECL (stmt)))
{
*walk_subtrees = 0;
if (OMP_CLAUSE_LASTPRIVATE_STMT (stmt))
cp_walk_tree (&OMP_CLAUSE_LASTPRIVATE_STMT (stmt),
cp_genericize_r, data, NULL);
}
break;
case OMP_CLAUSE_PRIVATE:
/* Don't dereference an invisiref in OpenMP clauses. */
if (is_invisiref_parm (OMP_CLAUSE_DECL (stmt)))
*walk_subtrees = 0;
else if (wtd->omp_ctx != NULL)
{
/* Private clause doesn't cause any references to the
var in outer contexts, avoid calling
omp_cxx_notice_variable for it. */
struct cp_genericize_omp_taskreg *old = wtd->omp_ctx;
wtd->omp_ctx = NULL;
cp_walk_tree (&OMP_CLAUSE_DECL (stmt), cp_genericize_r,
data, NULL);
wtd->omp_ctx = old;
*walk_subtrees = 0;
}
break;
case OMP_CLAUSE_SHARED:
case OMP_CLAUSE_FIRSTPRIVATE:
case OMP_CLAUSE_COPYIN:
case OMP_CLAUSE_COPYPRIVATE:
/* Don't dereference an invisiref in OpenMP clauses. */
if (is_invisiref_parm (OMP_CLAUSE_DECL (stmt)))
*walk_subtrees = 0;
break;
case OMP_CLAUSE_REDUCTION:
/* Don't dereference an invisiref in reduction clause's
OMP_CLAUSE_DECL either. OMP_CLAUSE_REDUCTION_{INIT,MERGE}
still needs to be genericized. */
if (is_invisiref_parm (OMP_CLAUSE_DECL (stmt)))
{
*walk_subtrees = 0;
if (OMP_CLAUSE_REDUCTION_INIT (stmt))
cp_walk_tree (&OMP_CLAUSE_REDUCTION_INIT (stmt),
cp_genericize_r, data, NULL);
if (OMP_CLAUSE_REDUCTION_MERGE (stmt))
cp_walk_tree (&OMP_CLAUSE_REDUCTION_MERGE (stmt),
cp_genericize_r, data, NULL);
}
break;
default:
break;
}
else if (IS_TYPE_OR_DECL_P (stmt))
*walk_subtrees = 0;
/* Due to the way voidify_wrapper_expr is written, we don't get a chance
to lower this construct before scanning it, so we need to lower these
before doing anything else. */
else if (TREE_CODE (stmt) == CLEANUP_STMT)
*stmt_p = build2_loc (EXPR_LOCATION (stmt),
CLEANUP_EH_ONLY (stmt) ? TRY_CATCH_EXPR
: TRY_FINALLY_EXPR,
void_type_node,
CLEANUP_BODY (stmt),
CLEANUP_EXPR (stmt));
else if (TREE_CODE (stmt) == IF_STMT)
{
genericize_if_stmt (stmt_p);
/* *stmt_p has changed, tail recurse to handle it again. */
return cp_genericize_r (stmt_p, walk_subtrees, data);
}
/* COND_EXPR might have incompatible types in branches if one or both
arms are bitfields. Fix it up now. */
else if (TREE_CODE (stmt) == COND_EXPR)
{
tree type_left
= (TREE_OPERAND (stmt, 1)
? is_bitfield_expr_with_lowered_type (TREE_OPERAND (stmt, 1))
: NULL_TREE);
tree type_right
= (TREE_OPERAND (stmt, 2)
? is_bitfield_expr_with_lowered_type (TREE_OPERAND (stmt, 2))
: NULL_TREE);
if (type_left
&& !useless_type_conversion_p (TREE_TYPE (stmt),
TREE_TYPE (TREE_OPERAND (stmt, 1))))
{
TREE_OPERAND (stmt, 1)
= fold_convert (type_left, TREE_OPERAND (stmt, 1));
gcc_assert (useless_type_conversion_p (TREE_TYPE (stmt),
type_left));
}
if (type_right
&& !useless_type_conversion_p (TREE_TYPE (stmt),
TREE_TYPE (TREE_OPERAND (stmt, 2))))
{
TREE_OPERAND (stmt, 2)
= fold_convert (type_right, TREE_OPERAND (stmt, 2));
gcc_assert (useless_type_conversion_p (TREE_TYPE (stmt),
type_right));
}
}
else if (TREE_CODE (stmt) == BIND_EXPR)
{
if (__builtin_expect (wtd->omp_ctx != NULL, 0))
{
tree decl;
for (decl = BIND_EXPR_VARS (stmt); decl; decl = DECL_CHAIN (decl))
if (VAR_P (decl)
&& !DECL_EXTERNAL (decl)
&& omp_var_to_track (decl))
{
splay_tree_node n
= splay_tree_lookup (wtd->omp_ctx->variables,
(splay_tree_key) decl);
if (n == NULL)
splay_tree_insert (wtd->omp_ctx->variables,
(splay_tree_key) decl,
TREE_STATIC (decl)
? OMP_CLAUSE_DEFAULT_SHARED
: OMP_CLAUSE_DEFAULT_PRIVATE);
}
}
wtd->bind_expr_stack.safe_push (stmt);
cp_walk_tree (&BIND_EXPR_BODY (stmt),
cp_genericize_r, data, NULL);
wtd->bind_expr_stack.pop ();
}
else if (TREE_CODE (stmt) == USING_STMT)
{
tree block = NULL_TREE;
/* Get the innermost inclosing GIMPLE_BIND that has a non NULL
BLOCK, and append an IMPORTED_DECL to its
BLOCK_VARS chained list. */
if (wtd->bind_expr_stack.exists ())
{
int i;
for (i = wtd->bind_expr_stack.length () - 1; i >= 0; i--)
if ((block = BIND_EXPR_BLOCK (wtd->bind_expr_stack[i])))
break;
}
if (block)
{
tree using_directive;
gcc_assert (TREE_OPERAND (stmt, 0));
using_directive = make_node (IMPORTED_DECL);
TREE_TYPE (using_directive) = void_type_node;
IMPORTED_DECL_ASSOCIATED_DECL (using_directive)
= TREE_OPERAND (stmt, 0);
DECL_CHAIN (using_directive) = BLOCK_VARS (block);
BLOCK_VARS (block) = using_directive;
}
/* The USING_STMT won't appear in GENERIC. */
*stmt_p = build1 (NOP_EXPR, void_type_node, integer_zero_node);
*walk_subtrees = 0;
}
else if (TREE_CODE (stmt) == DECL_EXPR
&& TREE_CODE (DECL_EXPR_DECL (stmt)) == USING_DECL)
{
/* Using decls inside DECL_EXPRs are just dropped on the floor. */
*stmt_p = build1 (NOP_EXPR, void_type_node, integer_zero_node);
*walk_subtrees = 0;
}
else if (TREE_CODE (stmt) == OMP_PARALLEL || TREE_CODE (stmt) == OMP_TASK)
{
struct cp_genericize_omp_taskreg omp_ctx;
tree c, decl;
splay_tree_node n;
*walk_subtrees = 0;
cp_walk_tree (&OMP_CLAUSES (stmt), cp_genericize_r, data, NULL);
omp_ctx.is_parallel = TREE_CODE (stmt) == OMP_PARALLEL;
omp_ctx.default_shared = omp_ctx.is_parallel;
omp_ctx.outer = wtd->omp_ctx;
omp_ctx.variables = splay_tree_new (splay_tree_compare_decl_uid, 0, 0);
wtd->omp_ctx = &omp_ctx;
for (c = OMP_CLAUSES (stmt); c; c = OMP_CLAUSE_CHAIN (c))
switch (OMP_CLAUSE_CODE (c))
{
case OMP_CLAUSE_SHARED:
case OMP_CLAUSE_PRIVATE:
case OMP_CLAUSE_FIRSTPRIVATE:
case OMP_CLAUSE_LASTPRIVATE:
decl = OMP_CLAUSE_DECL (c);
if (decl == error_mark_node || !omp_var_to_track (decl))
break;
n = splay_tree_lookup (omp_ctx.variables, (splay_tree_key) decl);
if (n != NULL)
break;
splay_tree_insert (omp_ctx.variables, (splay_tree_key) decl,
OMP_CLAUSE_CODE (c) == OMP_CLAUSE_SHARED
? OMP_CLAUSE_DEFAULT_SHARED
: OMP_CLAUSE_DEFAULT_PRIVATE);
if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_PRIVATE
&& omp_ctx.outer)
omp_cxx_notice_variable (omp_ctx.outer, decl);
break;
case OMP_CLAUSE_DEFAULT:
if (OMP_CLAUSE_DEFAULT_KIND (c) == OMP_CLAUSE_DEFAULT_SHARED)
omp_ctx.default_shared = true;
default:
break;
}
cp_walk_tree (&OMP_BODY (stmt), cp_genericize_r, data, NULL);
wtd->omp_ctx = omp_ctx.outer;
splay_tree_delete (omp_ctx.variables);
}
else if (TREE_CODE (stmt) == CONVERT_EXPR)
gcc_assert (!CONVERT_EXPR_VBASE_PATH (stmt));
else if (TREE_CODE (stmt) == FOR_STMT)
genericize_for_stmt (stmt_p, walk_subtrees, data);
else if (TREE_CODE (stmt) == WHILE_STMT)
genericize_while_stmt (stmt_p, walk_subtrees, data);
else if (TREE_CODE (stmt) == DO_STMT)
genericize_do_stmt (stmt_p, walk_subtrees, data);
else if (TREE_CODE (stmt) == SWITCH_STMT)
genericize_switch_stmt (stmt_p, walk_subtrees, data);
else if (TREE_CODE (stmt) == CONTINUE_STMT)
genericize_continue_stmt (stmt_p);
else if (TREE_CODE (stmt) == BREAK_STMT)
genericize_break_stmt (stmt_p);
else if (TREE_CODE (stmt) == OMP_FOR
|| TREE_CODE (stmt) == OMP_SIMD
|| TREE_CODE (stmt) == OMP_DISTRIBUTE)
genericize_omp_for_stmt (stmt_p, walk_subtrees, data);
else if (TREE_CODE (stmt) == SIZEOF_EXPR)
{
if (SIZEOF_EXPR_TYPE_P (stmt))
*stmt_p
= cxx_sizeof_or_alignof_type (TREE_TYPE (TREE_OPERAND (stmt, 0)),
SIZEOF_EXPR, false);
else if (TYPE_P (TREE_OPERAND (stmt, 0)))
*stmt_p = cxx_sizeof_or_alignof_type (TREE_OPERAND (stmt, 0),
SIZEOF_EXPR, false);
else
*stmt_p = cxx_sizeof_or_alignof_expr (TREE_OPERAND (stmt, 0),
SIZEOF_EXPR, false);
if (*stmt_p == error_mark_node)
*stmt_p = size_one_node;
return NULL;
}
pointer_set_insert (p_set, *stmt_p);
return NULL;
}
void
use_thunk (tree thunk_fndecl, bool emit_p)
{
tree a, t, function, alias;
tree virtual_offset;
HOST_WIDE_INT fixed_offset, virtual_value;
bool this_adjusting = DECL_THIS_THUNK_P (thunk_fndecl);
/* We should have called finish_thunk to give it a name. */
gcc_assert (DECL_NAME (thunk_fndecl));
/* We should never be using an alias, always refer to the
aliased thunk. */
gcc_assert (!THUNK_ALIAS (thunk_fndecl));
if (TREE_ASM_WRITTEN (thunk_fndecl))
return;
function = THUNK_TARGET (thunk_fndecl);
if (DECL_RESULT (thunk_fndecl))
/* We already turned this thunk into an ordinary function.
There's no need to process this thunk again. */
return;
if (DECL_THUNK_P (function))
/* The target is itself a thunk, process it now. */
use_thunk (function, emit_p);
/* Thunks are always addressable; they only appear in vtables. */
TREE_ADDRESSABLE (thunk_fndecl) = 1;
/* Figure out what function is being thunked to. It's referenced in
this translation unit. */
TREE_ADDRESSABLE (function) = 1;
mark_used (function);
if (!emit_p)
return;
if (0 && TARGET_USE_LOCAL_THUNK_ALIAS_P (function))
alias = make_alias_for_thunk (function);
else
alias = function;
fixed_offset = THUNK_FIXED_OFFSET (thunk_fndecl);
virtual_offset = THUNK_VIRTUAL_OFFSET (thunk_fndecl);
if (virtual_offset)
{
if (!this_adjusting)
virtual_offset = BINFO_VPTR_FIELD (virtual_offset);
virtual_value = tree_low_cst (virtual_offset, /*pos=*/0);
gcc_assert (virtual_value);
}
else
virtual_value = 0;
/* And, if we need to emit the thunk, it's used. */
mark_used (thunk_fndecl);
/* This thunk is actually defined. */
DECL_EXTERNAL (thunk_fndecl) = 0;
/* The linkage of the function may have changed. FIXME in linkage
rewrite. */
TREE_PUBLIC (thunk_fndecl) = TREE_PUBLIC (function);
DECL_VISIBILITY (thunk_fndecl) = DECL_VISIBILITY (function);
DECL_VISIBILITY_SPECIFIED (thunk_fndecl)
= DECL_VISIBILITY_SPECIFIED (function);
if (DECL_ONE_ONLY (function) || DECL_WEAK (function))
make_decl_one_only (thunk_fndecl, cxx_comdat_group (thunk_fndecl));
if (flag_syntax_only)
{
TREE_ASM_WRITTEN (thunk_fndecl) = 1;
return;
}
push_to_top_level ();
if (TARGET_USE_LOCAL_THUNK_ALIAS_P (function)
&& targetm.have_named_sections)
{
resolve_unique_section (function, 0, flag_function_sections);
if (DECL_SECTION_NAME (function) != NULL && DECL_ONE_ONLY (function))
{
resolve_unique_section (thunk_fndecl, 0, flag_function_sections);
/* Output the thunk into the same section as function. */
DECL_SECTION_NAME (thunk_fndecl) = DECL_SECTION_NAME (function);
}
}
/* Set up cloned argument trees for the thunk. */
t = NULL_TREE;
for (a = DECL_ARGUMENTS (function); a; a = TREE_CHAIN (a))
{
tree x = copy_node (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;
TREE_ASM_WRITTEN (thunk_fndecl) = 1;
cgraph_add_thunk (thunk_fndecl, function,
this_adjusting, fixed_offset, virtual_value,
virtual_offset, alias);
if (!this_adjusting
|| !targetm.asm_out.can_output_mi_thunk (thunk_fndecl, fixed_offset,
virtual_value, alias))
{
/* 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
doesn't work for varargs. */
if (varargs_function_p (function))
error ("generic thunk code fails for method %q#D which uses %<...%>",
function);
}
pop_from_top_level ();
}
static tree
cp_genericize_r (tree *stmt_p, int *walk_subtrees, void *data)
{
tree stmt = *stmt_p;
struct pointer_set_t *p_set = (struct pointer_set_t*) data;
if (is_invisiref_parm (stmt)
/* Don't dereference parms in a thunk, pass the references through. */
&& !(DECL_THUNK_P (current_function_decl)
&& TREE_CODE (stmt) == PARM_DECL))
{
*stmt_p = convert_from_reference (stmt);
*walk_subtrees = 0;
return NULL;
}
/* Map block scope extern declarations to visible declarations with the
same name and type in outer scopes if any. */
if (cp_function_chain->extern_decl_map
&& (TREE_CODE (stmt) == FUNCTION_DECL || TREE_CODE (stmt) == VAR_DECL)
&& DECL_EXTERNAL (stmt))
{
struct cxx_int_tree_map *h, in;
in.uid = DECL_UID (stmt);
h = (struct cxx_int_tree_map *)
htab_find_with_hash (cp_function_chain->extern_decl_map,
&in, in.uid);
if (h)
{
*stmt_p = h->to;
*walk_subtrees = 0;
return NULL;
}
}
/* Other than invisiref parms, don't walk the same tree twice. */
if (pointer_set_contains (p_set, stmt))
{
*walk_subtrees = 0;
return NULL_TREE;
}
if (TREE_CODE (stmt) == ADDR_EXPR
&& is_invisiref_parm (TREE_OPERAND (stmt, 0)))
{
*stmt_p = convert (TREE_TYPE (stmt), TREE_OPERAND (stmt, 0));
*walk_subtrees = 0;
}
else if (TREE_CODE (stmt) == RETURN_EXPR
&& TREE_OPERAND (stmt, 0)
&& is_invisiref_parm (TREE_OPERAND (stmt, 0)))
/* Don't dereference an invisiref RESULT_DECL inside a RETURN_EXPR. */
*walk_subtrees = 0;
else if (TREE_CODE (stmt) == OMP_CLAUSE)
switch (OMP_CLAUSE_CODE (stmt))
{
case OMP_CLAUSE_PRIVATE:
case OMP_CLAUSE_SHARED:
case OMP_CLAUSE_FIRSTPRIVATE:
case OMP_CLAUSE_LASTPRIVATE:
case OMP_CLAUSE_COPYIN:
case OMP_CLAUSE_COPYPRIVATE:
/* Don't dereference an invisiref in OpenMP clauses. */
if (is_invisiref_parm (OMP_CLAUSE_DECL (stmt)))
*walk_subtrees = 0;
break;
case OMP_CLAUSE_REDUCTION:
gcc_assert (!is_invisiref_parm (OMP_CLAUSE_DECL (stmt)));
break;
default:
break;
}
else if (IS_TYPE_OR_DECL_P (stmt))
*walk_subtrees = 0;
/* Due to the way voidify_wrapper_expr is written, we don't get a chance
to lower this construct before scanning it, so we need to lower these
before doing anything else. */
else if (TREE_CODE (stmt) == CLEANUP_STMT)
*stmt_p = build2 (CLEANUP_EH_ONLY (stmt) ? TRY_CATCH_EXPR
: TRY_FINALLY_EXPR,
void_type_node,
CLEANUP_BODY (stmt),
CLEANUP_EXPR (stmt));
pointer_set_insert (p_set, *stmt_p);
return NULL;
}
