/* Default language-specific hooks.
- Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
+ Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Contributed by Alexandre Oliva <aoliva@redhat.com>
This file is part of GCC.
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. */
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
+#include "intl.h"
#include "tm.h"
#include "toplev.h"
#include "tree.h"
#include "tree-inline.h"
+#include "tree-gimple.h"
#include "rtl.h"
#include "insn-config.h"
#include "integrate.h"
#include "flags.h"
#include "langhooks.h"
+#include "target.h"
#include "langhooks-def.h"
#include "ggc.h"
+#include "diagnostic.h"
/* Do nothing; in many cases the default hook. */
/* Do nothing (tree). */
void
-lhd_do_nothing_t (tree t ATTRIBUTE_UNUSED)
+lhd_do_nothing_t (tree ARG_UNUSED (t))
{
}
/* Do nothing (int). */
void
-lhd_do_nothing_i (int i ATTRIBUTE_UNUSED)
+lhd_do_nothing_i (int ARG_UNUSED (i))
{
}
+/* Do nothing (int, int, int). Return NULL_TREE. */
+
+tree
+lhd_do_nothing_iii_return_null_tree (int ARG_UNUSED (i),
+ int ARG_UNUSED (j),
+ int ARG_UNUSED (k))
+{
+ return NULL_TREE;
+}
+
/* Do nothing (function). */
void
-lhd_do_nothing_f (struct function *f ATTRIBUTE_UNUSED)
+lhd_do_nothing_f (struct function * ARG_UNUSED (f))
{
}
/* Do nothing (return NULL_TREE). */
tree
-lhd_return_null_tree (tree t ATTRIBUTE_UNUSED)
+lhd_return_null_tree_v (void)
+{
+ return NULL_TREE;
+}
+
+/* Do nothing (return NULL_TREE). */
+
+tree
+lhd_return_null_tree (tree ARG_UNUSED (t))
{
return NULL_TREE;
}
/* The default post options hook. */
bool
-lhd_post_options (const char **pfilename ATTRIBUTE_UNUSED)
+lhd_post_options (const char ** ARG_UNUSED (pfilename))
{
return false;
}
/* Called from by print-tree.c. */
void
-lhd_print_tree_nothing (FILE *file ATTRIBUTE_UNUSED,
- tree node ATTRIBUTE_UNUSED,
- int indent ATTRIBUTE_UNUSED)
-{
-}
-
-/* Called from safe_from_p. */
-
-int
-lhd_safe_from_p (rtx x ATTRIBUTE_UNUSED, tree exp ATTRIBUTE_UNUSED)
-{
- return 1;
-}
-
-/* Called from unsafe_for_reeval. */
-
-int
-lhd_unsafe_for_reeval (tree t ATTRIBUTE_UNUSED)
+lhd_print_tree_nothing (FILE * ARG_UNUSED (file),
+ tree ARG_UNUSED (node),
+ int ARG_UNUSED (indent))
{
- return -1;
}
/* Called from staticp. */
-int
-lhd_staticp (tree exp ATTRIBUTE_UNUSED)
+tree
+lhd_staticp (tree ARG_UNUSED (exp))
{
- return 0;
+ return NULL;
}
/* Called from check_global_declarations. */
return true;
}
-/* Number for making the label on the next
- static variable internal to a function. */
-
-static GTY(()) int var_labelno;
-
/* Set the DECL_ASSEMBLER_NAME for DECL. */
void
lhd_set_decl_assembler_name (tree decl)
{
+ tree id;
+
/* The language-independent code should never use the
DECL_ASSEMBLER_NAME for lots of DECLs. Only FUNCTION_DECLs and
VAR_DECLs for variables with static storage duration need a real
DECL_ASSEMBLER_NAME. */
- if (TREE_CODE (decl) == FUNCTION_DECL
- || (TREE_CODE (decl) == VAR_DECL
- && (TREE_STATIC (decl)
- || DECL_EXTERNAL (decl)
- || TREE_PUBLIC (decl))))
+ gcc_assert (TREE_CODE (decl) == FUNCTION_DECL
+ || (TREE_CODE (decl) == VAR_DECL
+ && (TREE_STATIC (decl)
+ || DECL_EXTERNAL (decl)
+ || TREE_PUBLIC (decl))));
+
+ /* By default, assume the name to use in assembly code is the same
+ as that used in the source language. (That's correct for C, and
+ GCC used to set DECL_ASSEMBLER_NAME to the same value as
+ DECL_NAME in build_decl, so this choice provides backwards
+ compatibility with existing front-ends. This assumption is wrapped
+ in a target hook, to allow for target-specific modification of the
+ identifier.
+
+ Can't use just the variable's own name for a variable whose scope
+ is less than the whole compilation. Concatenate a distinguishing
+ number - we use the DECL_UID. */
+
+ if (TREE_PUBLIC (decl) || DECL_CONTEXT (decl) == NULL_TREE)
+ id = targetm.mangle_decl_assembler_name (decl, DECL_NAME (decl));
+ else
{
- /* By default, assume the name to use in assembly code is the
- same as that used in the source language. (That's correct
- for C, and GCC used to set DECL_ASSEMBLER_NAME to the same
- value as DECL_NAME in build_decl, so this choice provides
- backwards compatibility with existing front-ends.
-
- Can't use just the variable's own name for a variable whose
- scope is less than the whole compilation. Concatenate a
- distinguishing number. */
- if (!TREE_PUBLIC (decl) && DECL_CONTEXT (decl))
- {
- const char *name = IDENTIFIER_POINTER (DECL_NAME (decl));
- char *label;
-
- ASM_FORMAT_PRIVATE_NAME (label, name, var_labelno);
- var_labelno++;
- SET_DECL_ASSEMBLER_NAME (decl, get_identifier (label));
- }
- else
- SET_DECL_ASSEMBLER_NAME (decl, DECL_NAME (decl));
+ const char *name = IDENTIFIER_POINTER (DECL_NAME (decl));
+ char *label;
+
+ ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl));
+ id = get_identifier (label);
}
- else
- /* Nobody should ever be asking for the DECL_ASSEMBLER_NAME of
- these DECLs -- unless they're in language-dependent code, in
- which case set_decl_assembler_name hook should handle things. */
- abort ();
-}
+ SET_DECL_ASSEMBLER_NAME (decl, id);
-/* By default we always allow bit-field based optimizations. */
-bool
-lhd_can_use_bit_fields_p (void)
-{
- return true;
}
-/* Provide a default routine to clear the binding stack. This is used
- by languages that don't need to do anything special. */
-void
-lhd_clear_binding_stack (void)
+/* Type promotion for variable arguments. */
+tree
+lhd_type_promotes_to (tree ARG_UNUSED (type))
{
- while (! (*lang_hooks.decls.global_bindings_p) ())
- poplevel (0, 0, 0);
+ gcc_unreachable ();
}
-/* Type promotion for variable arguments. */
-tree
-lhd_type_promotes_to (tree type ATTRIBUTE_UNUSED)
+/* Registration of machine- or os-specific builtin types. */
+void
+lhd_register_builtin_type (tree ARG_UNUSED (type),
+ const char * ARG_UNUSED (name))
{
- abort ();
}
/* Invalid use of an incomplete type. */
void
-lhd_incomplete_type_error (tree value ATTRIBUTE_UNUSED, tree type)
+lhd_incomplete_type_error (tree ARG_UNUSED (value), tree type)
{
- if (TREE_CODE (type) == ERROR_MARK)
- return;
-
- abort ();
+ gcc_assert (TREE_CODE (type) == ERROR_MARK);
+ return;
}
/* Provide a default routine for alias sets that always returns -1. This
is used by languages that don't need to do anything special. */
HOST_WIDE_INT
-lhd_get_alias_set (tree t ATTRIBUTE_UNUSED)
+lhd_get_alias_set (tree ARG_UNUSED (t))
{
return -1;
}
-/* Provide a hook routine for alias sets that always returns 0. This is
- used by languages that haven't deal with alias sets yet. */
+/* This is the default expand_expr function. */
-HOST_WIDE_INT
-hook_get_alias_set_0 (tree t ATTRIBUTE_UNUSED)
+rtx
+lhd_expand_expr (tree ARG_UNUSED (t), rtx ARG_UNUSED (r),
+ enum machine_mode ARG_UNUSED (mm),
+ int ARG_UNUSED (em),
+ rtx * ARG_UNUSED (a))
{
- return 0;
+ gcc_unreachable ();
}
-/* This is the default expand_expr function. */
+/* The default language-specific function for expanding a decl. After
+ the language-independent cases are handled, this function will be
+ called. If this function is not defined, it is assumed that
+ declarations other than those for variables and labels do not require
+ any RTL generation. */
-rtx
-lhd_expand_expr (tree t ATTRIBUTE_UNUSED, rtx r ATTRIBUTE_UNUSED,
- enum machine_mode mm ATTRIBUTE_UNUSED,
- int em ATTRIBUTE_UNUSED)
+int
+lhd_expand_decl (tree ARG_UNUSED (t))
{
- abort ();
+ return 0;
}
/* This is the default decl_printable_name function. */
const char *
-lhd_decl_printable_name (tree decl, int verbosity ATTRIBUTE_UNUSED)
+lhd_decl_printable_name (tree decl, int ARG_UNUSED (verbosity))
{
+ gcc_assert (decl && DECL_NAME (decl));
return IDENTIFIER_POINTER (DECL_NAME (decl));
}
+/* This is the default dwarf_name function. */
+
+const char *
+lhd_dwarf_name (tree t, int verbosity)
+{
+ gcc_assert (DECL_P (t));
+
+ return lang_hooks.decl_printable_name (t, verbosity);
+}
+
+/* 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
+lhd_types_compatible_p (tree x, tree y)
+{
+ return TYPE_MAIN_VARIANT (x) == TYPE_MAIN_VARIANT (y);
+}
+
/* lang_hooks.tree_inlining.walk_subtrees is called by walk_tree()
after handling common cases, but before walking code-specific
sub-trees. If this hook is overridden for a language, it should
handle language-specific tree codes, as well as language-specific
information associated to common tree codes. If a tree node is
completely handled within this function, it should set *SUBTREES to
- 0, so that generic handling isn't attempted. For language-specific
- tree codes, generic handling would abort(), so make sure it is set
- properly. Both SUBTREES and *SUBTREES is guaranteed to be nonzero
- when the function is called. */
+ 0, so that generic handling isn't attempted. The generic handling
+ cannot deal with language-specific tree codes, so make sure it is
+ set properly. Both SUBTREES and *SUBTREES is guaranteed to be
+ nonzero when the function is called. */
tree
lhd_tree_inlining_walk_subtrees (tree *tp ATTRIBUTE_UNUSED,
int *subtrees ATTRIBUTE_UNUSED,
walk_tree_fn func ATTRIBUTE_UNUSED,
void *data ATTRIBUTE_UNUSED,
- void *htab ATTRIBUTE_UNUSED)
+ struct pointer_set_t *pset ATTRIBUTE_UNUSED)
{
return NULL_TREE;
}
return 0;
}
-/* lang_hooks.tree_inlining.add_pending_fn_decls is called before
- starting to inline a function, to push any language-specific
- functions that should not be inlined into the current function,
- into VAFNP. PFN is the top of varray, and should be returned if no
- functions are pushed into VAFNP. The top of the varray should be
- returned. */
-
-tree
-lhd_tree_inlining_add_pending_fn_decls (void *vafnp ATTRIBUTE_UNUSED, tree pfn)
-{
- return pfn;
-}
-
-/* lang_hooks.tree_inlining.tree_chain_matters_p indicates whether the
- TREE_CHAIN of a language-specific tree node is relevant, i.e.,
- whether it should be walked, copied and preserved across copies. */
-
-int
-lhd_tree_inlining_tree_chain_matters_p (tree t ATTRIBUTE_UNUSED)
-{
- return 0;
-}
-
/* lang_hooks.tree_inlining.auto_var_in_fn_p is called to determine
whether VT is an automatic variable defined in function FT. */
|| TREE_CODE (var) == RESULT_DECL));
}
-/* lang_hooks.tree_inlining.copy_res_decl_for_inlining should return a
- declaration for the result RES of function FN to be inlined into
- CALLER. NDP points to an integer that should be set in case a new
- declaration wasn't created (presumably because RES was of aggregate
- type, such that a TARGET_EXPR is used for the result). TEXPS is a
- pointer to a varray with the stack of TARGET_EXPRs seen while
- inlining functions into caller; the top of TEXPS is supposed to
- match RES. */
-
-tree
-lhd_tree_inlining_copy_res_decl_for_inlining (tree res, tree fn, tree caller,
- void *dm ATTRIBUTE_UNUSED,
- int *ndp ATTRIBUTE_UNUSED,
- tree return_slot_addr ATTRIBUTE_UNUSED)
-{
- if (return_slot_addr)
- return build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (return_slot_addr)),
- return_slot_addr);
- else
- return copy_decl_for_inlining (res, fn, caller);
-}
-
-/* lang_hooks.tree_inlining.anon_aggr_type_p determines whether T is a
- type node representing an anonymous aggregate (union, struct, etc),
- i.e., one whose members are in the same scope as the union itself. */
-
-int
-lhd_tree_inlining_anon_aggr_type_p (tree t ATTRIBUTE_UNUSED)
-{
- return 0;
-}
-
-/* lang_hooks.tree_inlining.start_inlining and end_inlining perform any
- language-specific bookkeeping necessary for processing
- FN. start_inlining returns nonzero if inlining should proceed, zero if
- not.
-
- For instance, the C++ version keeps track of template instantiations to
- avoid infinite recursion. */
-
-int
-lhd_tree_inlining_start_inlining (tree fn ATTRIBUTE_UNUSED)
-{
- return 1;
-}
-
-void
-lhd_tree_inlining_end_inlining (tree fn ATTRIBUTE_UNUSED)
-{
-}
-
/* lang_hooks.tree_inlining.convert_parm_for_inlining performs any
language-specific conversion before assigning VALUE to PARM. */
tree
lhd_tree_inlining_convert_parm_for_inlining (tree parm ATTRIBUTE_UNUSED,
tree value,
- tree fndecl ATTRIBUTE_UNUSED)
+ tree fndecl ATTRIBUTE_UNUSED,
+ int argnum ATTRIBUTE_UNUSED)
{
return value;
}
tree
lhd_expr_size (tree exp)
{
- if (TREE_CODE_CLASS (TREE_CODE (exp)) == 'd'
+ if (DECL_P (exp)
&& DECL_SIZE_UNIT (exp) != 0)
return DECL_SIZE_UNIT (exp);
else
return size_in_bytes (TREE_TYPE (exp));
}
+/* lang_hooks.gimplify_expr re-writes *EXPR_P into GIMPLE form. */
+
+int
+lhd_gimplify_expr (tree *expr_p ATTRIBUTE_UNUSED, tree *pre_p ATTRIBUTE_UNUSED,
+ tree *post_p ATTRIBUTE_UNUSED)
+{
+ return GS_UNHANDLED;
+}
+
/* lang_hooks.tree_size: Determine the size of a tree with code C,
- which is a language-specific tree code in category 'x'. The
- default expects never to be called. */
+ which is a language-specific tree code in category tcc_constant or
+ tcc_exceptional. The default expects never to be called. */
size_t
lhd_tree_size (enum tree_code c ATTRIBUTE_UNUSED)
{
- abort ();
- return 0;
+ gcc_unreachable ();
}
/* Return true if decl, which is a function decl, may be called by a
return true;
}
+/* Return the COMDAT group into which DECL should be placed. */
+
+const char *
+lhd_comdat_group (tree decl)
+{
+ return IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
+}
+
/* lang_hooks.decls.final_write_globals: perform final processing on
global variables. */
void
Really output inline functions that must actually be callable
and have not been output so far. */
- tree globals = (*lang_hooks.decls.getdecls) ();
+ tree globals = lang_hooks.decls.getdecls ();
int len = list_length (globals);
- tree *vec = xmalloc (sizeof (tree) * len);
+ tree *vec = XNEWVEC (tree, len);
int i;
tree decl;
vec[len - i - 1] = decl;
wrapup_global_declarations (vec, len);
-
check_global_declarations (vec, len);
+ emit_debug_global_declarations (vec, len);
- /* Clean up. */
+ /* Clean up. */
free (vec);
}
{
}
-#include "gt-langhooks.h"
+/* The default function to print out name of current function that caused
+ an error. */
+void
+lhd_print_error_function (diagnostic_context *context, const char *file)
+{
+ if (diagnostic_last_function_changed (context))
+ {
+ const char *old_prefix = context->printer->prefix;
+ char *new_prefix = file ? file_name_as_prefix (file) : NULL;
+
+ pp_set_prefix (context->printer, new_prefix);
+
+ if (current_function_decl == NULL)
+ pp_printf (context->printer, _("At top level:"));
+ else
+ {
+ if (TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE)
+ pp_printf
+ (context->printer, _("In member function %qs:"),
+ lang_hooks.decl_printable_name (current_function_decl, 2));
+ else
+ pp_printf
+ (context->printer, _("In function %qs:"),
+ lang_hooks.decl_printable_name (current_function_decl, 2));
+ }
+
+ diagnostic_set_last_function (context);
+ pp_flush (context->printer);
+ context->printer->prefix = old_prefix;
+ free ((char*) new_prefix);
+ }
+}
+
+tree
+lhd_callgraph_analyze_expr (tree *tp ATTRIBUTE_UNUSED,
+ int *walk_subtrees ATTRIBUTE_UNUSED,
+ tree decl ATTRIBUTE_UNUSED)
+{
+ return NULL;
+}
+
+tree
+lhd_make_node (enum tree_code code)
+{
+ return make_node (code);
+}
+
+HOST_WIDE_INT
+lhd_to_target_charset (HOST_WIDE_INT c)
+{
+ return c;
+}
+
+tree
+lhd_expr_to_decl (tree expr, bool *tc ATTRIBUTE_UNUSED,
+ bool *ti ATTRIBUTE_UNUSED, bool *se ATTRIBUTE_UNUSED)
+{
+ return expr;
+}
+
+/* Return sharing kind if OpenMP sharing attribute of DECL is
+ predetermined, OMP_CLAUSE_DEFAULT_UNSPECIFIED otherwise. */
+
+enum omp_clause_default_kind
+lhd_omp_predetermined_sharing (tree decl ATTRIBUTE_UNUSED)
+{
+ if (DECL_ARTIFICIAL (decl))
+ return OMP_CLAUSE_DEFAULT_SHARED;
+ return OMP_CLAUSE_DEFAULT_UNSPECIFIED;
+}
+
+/* Generate code to copy SRC to DST. */
+
+tree
+lhd_omp_assignment (tree clause ATTRIBUTE_UNUSED, tree dst, tree src)
+{
+ return build_gimple_modify_stmt (dst, src);
+}
+
+/* Register language specific type size variables as potentially OpenMP
+ firstprivate variables. */
+
+void
+lhd_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *c ATTRIBUTE_UNUSED,
+ tree t ATTRIBUTE_UNUSED)
+{
+}
+
+tree
+add_builtin_function (const char *name,
+ tree type,
+ int function_code,
+ enum built_in_class cl,
+ const char *library_name,
+ tree attrs)
+{
+ tree id = get_identifier (name);
+ tree decl = build_decl (FUNCTION_DECL, id, type);
+
+ TREE_PUBLIC (decl) = 1;
+ DECL_EXTERNAL (decl) = 1;
+ DECL_BUILT_IN_CLASS (decl) = cl;
+ DECL_FUNCTION_CODE (decl) = function_code;
+
+ if (library_name)
+ {
+ tree libname = get_identifier (library_name);
+ SET_DECL_ASSEMBLER_NAME (decl, libname);
+ }
+
+ /* Possibly apply some default attributes to this built-in function. */
+ if (attrs)
+ decl_attributes (&decl, attrs, ATTR_FLAG_BUILT_IN);
+ else
+ decl_attributes (&decl, NULL_TREE, 0);
+
+ return lang_hooks.builtin_function (decl);
+
+}
+
+tree
+lhd_builtin_function (tree decl)
+{
+ lang_hooks.decls.pushdecl (decl);
+ return decl;
+}
+
+/* If TYPE is an integral type, return an equivalent type which is
+ unsigned iff UNSIGNEDP is true. If TYPE is not an integral type,
+ return TYPE itself. */
+
+tree
+get_signed_or_unsigned_type (int unsignedp, tree type)
+{
+ return lang_hooks.types.signed_or_unsigned_type(unsignedp, type);
+}
+
+/* Default implementation of the signed_or_unsigned_type language hook */
+
+tree
+lhd_signed_or_unsigned_type (int unsignedp, tree type)
+{
+ if (!INTEGRAL_TYPE_P (type) || TYPE_UNSIGNED (type) == unsignedp)
+ return type;
+
+ return lang_hooks.types.type_for_size (TYPE_PRECISION (type), unsignedp);
+}