/* Default language-specific hooks.
- Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Contributed by Alexandre Oliva <aoliva@redhat.com>
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/>. */
#include "config.h"
#include "system.h"
#include "toplev.h"
#include "tree.h"
#include "tree-inline.h"
-#include "tree-gimple.h"
+#include "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"
+#include "cgraph.h"
+#include "output.h"
/* Do nothing; in many cases the default hook. */
{
}
+/* Pass through (tree). */
+tree
+lhd_pass_through_t (tree t)
+{
+ return t;
+}
+
/* Do nothing (int). */
void
{
}
-/* Do nothing (return the tree node passed). */
+/* Do nothing (return NULL_TREE). */
tree
-lhd_return_tree (tree t)
+lhd_return_null_tree_v (void)
{
- return t;
+ return NULL_TREE;
}
/* Do nothing (return NULL_TREE). */
tree
-lhd_return_null_tree_v (void)
+lhd_return_null_tree (tree ARG_UNUSED (t))
{
return NULL_TREE;
}
/* Do nothing (return NULL_TREE). */
tree
-lhd_return_null_tree (tree ARG_UNUSED (t))
+lhd_return_null_const_tree (const_tree ARG_UNUSED (t))
{
return NULL_TREE;
}
bool
lhd_post_options (const char ** ARG_UNUSED (pfilename))
{
+ /* Excess precision other than "fast" requires front-end
+ support. */
+ flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
return false;
}
{
}
-/* Called from staticp. */
-
-tree
-lhd_staticp (tree ARG_UNUSED (exp))
-{
- return NULL;
-}
-
/* Called from check_global_declarations. */
bool
-lhd_warn_unused_global_decl (tree decl)
+lhd_warn_unused_global_decl (const_tree decl)
{
/* This is what used to exist in check_global_declarations. Probably
not many of these actually apply to non-C languages. */
- if (TREE_CODE (decl) == FUNCTION_DECL && DECL_INLINE (decl))
+ if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl))
return false;
if (TREE_CODE (decl) == VAR_DECL && TREE_READONLY (decl))
return false;
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
&& (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.
-
+ 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)
- SET_DECL_ASSEMBLER_NAME (decl, DECL_NAME (decl));
+ id = targetm.mangle_decl_assembler_name (decl, DECL_NAME (decl));
else
{
const char *name = IDENTIFIER_POINTER (DECL_NAME (decl));
char *label;
-
+
ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl));
- SET_DECL_ASSEMBLER_NAME (decl, get_identifier (label));
+ id = get_identifier (label);
}
+ SET_DECL_ASSEMBLER_NAME (decl, id);
+
}
/* Type promotion for variable arguments. */
/* Invalid use of an incomplete type. */
void
-lhd_incomplete_type_error (tree ARG_UNUSED (value), tree type)
+lhd_incomplete_type_error (const_tree ARG_UNUSED (value), const_tree type)
{
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
+alias_set_type
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. */
-
-HOST_WIDE_INT
-hook_get_alias_set_0 (tree ARG_UNUSED (t))
-{
- return 0;
-}
-
-/* This is the default expand_expr function. */
-
-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))
-{
- gcc_unreachable ();
-}
-
-/* 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. */
-
-int
-lhd_expand_decl (tree ARG_UNUSED (t))
-{
- return 0;
-}
-
/* This is the default decl_printable_name function. */
const char *
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. 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,
- struct pointer_set_t *pset ATTRIBUTE_UNUSED)
-{
- return NULL_TREE;
-}
-
-/* lang_hooks.tree_inlining.cannot_inline_tree_fn is called to
- determine whether there are language-specific reasons for not
- inlining a given function. */
-
-int
-lhd_tree_inlining_cannot_inline_tree_fn (tree *fnp)
-{
- if (flag_really_no_inline
- && lookup_attribute ("always_inline", DECL_ATTRIBUTES (*fnp)) == NULL)
- return 1;
-
- return 0;
-}
-
-/* lang_hooks.tree_inlining.disregard_inline_limits is called to
- determine whether a function should be considered for inlining even
- if it would exceed inlining limits. */
-
-int
-lhd_tree_inlining_disregard_inline_limits (tree fn)
-{
- if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) != NULL)
- return 1;
-
- 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.auto_var_in_fn_p is called to determine
- whether VT is an automatic variable defined in function FT. */
-
-int
-lhd_tree_inlining_auto_var_in_fn_p (tree var, tree fn)
-{
- return (DECL_P (var) && DECL_CONTEXT (var) == fn
- && (((TREE_CODE (var) == VAR_DECL || TREE_CODE (var) == PARM_DECL)
- && ! TREE_STATIC (var))
- || TREE_CODE (var) == LABEL_DECL
- || TREE_CODE (var) == RESULT_DECL));
-}
-
-/* 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,
- int argnum ATTRIBUTE_UNUSED)
-{
- return value;
-}
-
/* lang_hooks.tree_dump.dump_tree: Dump language-specific parts of tree
nodes. Returns nonzero if it does not want the usual dumping of the
second argument. */
language-specific way. */
int
-lhd_tree_dump_type_quals (tree t)
+lhd_tree_dump_type_quals (const_tree t)
{
return TYPE_QUALS (t);
}
-/* lang_hooks.expr_size: Determine the size of the value of an expression T
- in a language-specific way. Returns a tree for the size in bytes. */
-
-tree
-lhd_expr_size (tree exp)
-{
- 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)
+lhd_gimplify_expr (tree *expr_p ATTRIBUTE_UNUSED,
+ gimple_seq *pre_p ATTRIBUTE_UNUSED,
+ gimple_seq *post_p ATTRIBUTE_UNUSED)
{
return GS_UNHANDLED;
}
sibcall. */
bool
-lhd_decl_ok_for_sibcall (tree decl ATTRIBUTE_UNUSED)
+lhd_decl_ok_for_sibcall (const_tree decl ATTRIBUTE_UNUSED)
{
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
write_global_declarations (void)
{
+ tree globals, decl, *vec;
+ int len, i;
+
+ /* This lang hook is dual-purposed, and also finalizes the
+ compilation unit. */
+ cgraph_finalize_compilation_unit ();
+
/* Really define vars that have had only a tentative definition.
Really output inline functions that must actually be callable
and have not been output so far. */
- tree globals = lang_hooks.decls.getdecls ();
- int len = list_length (globals);
- tree *vec = XNEWVEC (tree, len);
- int i;
- tree decl;
+ globals = lang_hooks.decls.getdecls ();
+ len = list_length (globals);
+ vec = XNEWVEC (tree, len);
/* Process the decls in reverse order--earliest first.
Put them into VEC from back to front, then take out from front. */
/* 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)
+lhd_print_error_function (diagnostic_context *context, const char *file,
+ diagnostic_info *diagnostic)
{
- if (diagnostic_last_function_changed (context))
+ if (diagnostic_last_function_changed (context, diagnostic))
{
const char *old_prefix = context->printer->prefix;
- char *new_prefix = file ? file_name_as_prefix (file) : NULL;
+ tree abstract_origin = diagnostic->abstract_origin;
+ char *new_prefix = (file && abstract_origin == NULL)
+ ? file_name_as_prefix (file) : NULL;
pp_set_prefix (context->printer, new_prefix);
pp_printf (context->printer, _("At top level:"));
else
{
- if (TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE)
+ tree fndecl, ao;
+
+ if (abstract_origin)
+ {
+ ao = BLOCK_ABSTRACT_ORIGIN (abstract_origin);
+ while (TREE_CODE (ao) == BLOCK
+ && BLOCK_ABSTRACT_ORIGIN (ao)
+ && BLOCK_ABSTRACT_ORIGIN (ao) != ao)
+ ao = BLOCK_ABSTRACT_ORIGIN (ao);
+ gcc_assert (TREE_CODE (ao) == FUNCTION_DECL);
+ fndecl = ao;
+ }
+ else
+ fndecl = current_function_decl;
+
+ if (TREE_CODE (TREE_TYPE (fndecl)) == METHOD_TYPE)
pp_printf
- (context->printer, _("In member function %qs:"),
- lang_hooks.decl_printable_name (current_function_decl, 2));
+ (context->printer, _("In member function %qs"),
+ identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)));
else
pp_printf
- (context->printer, _("In function %qs:"),
- lang_hooks.decl_printable_name (current_function_decl, 2));
+ (context->printer, _("In function %qs"),
+ identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)));
+
+ while (abstract_origin)
+ {
+ location_t *locus;
+ tree block = abstract_origin;
+
+ locus = &BLOCK_SOURCE_LOCATION (block);
+ fndecl = NULL;
+ block = BLOCK_SUPERCONTEXT (block);
+ while (block && TREE_CODE (block) == BLOCK
+ && BLOCK_ABSTRACT_ORIGIN (block))
+ {
+ ao = BLOCK_ABSTRACT_ORIGIN (block);
+
+ while (TREE_CODE (ao) == BLOCK
+ && BLOCK_ABSTRACT_ORIGIN (ao)
+ && BLOCK_ABSTRACT_ORIGIN (ao) != ao)
+ ao = BLOCK_ABSTRACT_ORIGIN (ao);
+
+ if (TREE_CODE (ao) == FUNCTION_DECL)
+ {
+ fndecl = ao;
+ break;
+ }
+ else if (TREE_CODE (ao) != BLOCK)
+ break;
+
+ block = BLOCK_SUPERCONTEXT (block);
+ }
+ if (fndecl)
+ abstract_origin = block;
+ else
+ {
+ while (block && TREE_CODE (block) == BLOCK)
+ block = BLOCK_SUPERCONTEXT (block);
+
+ if (block && TREE_CODE (block) == FUNCTION_DECL)
+ fndecl = block;
+ abstract_origin = NULL;
+ }
+ if (fndecl)
+ {
+ expanded_location s = expand_location (*locus);
+ pp_character (context->printer, ',');
+ pp_newline (context->printer);
+ if (s.file != NULL)
+ {
+ if (flag_show_column)
+ pp_printf (context->printer,
+ _(" inlined from %qs at %s:%d:%d"),
+ identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)),
+ s.file, s.line, s.column);
+ else
+ pp_printf (context->printer,
+ _(" inlined from %qs at %s:%d"),
+ identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)),
+ s.file, s.line);
+
+ }
+ else
+ pp_printf (context->printer, _(" inlined from %qs"),
+ identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)));
+ }
+ }
+ pp_character (context->printer, ':');
}
- diagnostic_set_last_function (context);
+ diagnostic_set_last_function (context, diagnostic);
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)
+ int *walk_subtrees ATTRIBUTE_UNUSED)
{
return NULL;
}
}
tree
-lhd_expr_to_decl (tree expr, bool *tc ATTRIBUTE_UNUSED,
- bool *ti ATTRIBUTE_UNUSED, bool *se ATTRIBUTE_UNUSED)
+lhd_expr_to_decl (tree expr, bool *tc ATTRIBUTE_UNUSED, bool *se ATTRIBUTE_UNUSED)
{
return expr;
}
tree
lhd_omp_assignment (tree clause ATTRIBUTE_UNUSED, tree dst, tree src)
{
- return build_gimple_modify_stmt (dst, src);
+ return build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src);
}
/* Register language specific type size variables as potentially OpenMP
{
}
-tree
-add_builtin_function (const char *name,
- tree type,
- int function_code,
- enum built_in_class cl,
- const char *library_name,
- tree attrs)
+/* Common function for add_builtin_function and
+ add_builtin_function_ext_scope. */
+static tree
+add_builtin_function_common (const char *name,
+ tree type,
+ int function_code,
+ enum built_in_class cl,
+ const char *library_name,
+ tree attrs,
+ tree (*hook) (tree))
{
tree id = get_identifier (name);
- tree decl = build_decl (FUNCTION_DECL, id, type);
+ tree decl = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, id, type);
TREE_PUBLIC (decl) = 1;
DECL_EXTERNAL (decl) = 1;
DECL_BUILT_IN_CLASS (decl) = cl;
- DECL_FUNCTION_CODE (decl) = function_code;
+
+ DECL_FUNCTION_CODE (decl) = (enum built_in_function) function_code;
+
+ /* DECL_FUNCTION_CODE is a bitfield; verify that the value fits. */
+ gcc_assert (DECL_FUNCTION_CODE (decl) == function_code);
if (library_name)
{
else
decl_attributes (&decl, NULL_TREE, 0);
- return lang_hooks.builtin_function (decl);
+ return hook (decl);
+
+}
+
+/* Create a builtin function. */
+
+tree
+add_builtin_function (const char *name,
+ tree type,
+ int function_code,
+ enum built_in_class cl,
+ const char *library_name,
+ tree attrs)
+{
+ return add_builtin_function_common (name, type, function_code, cl,
+ library_name, attrs,
+ lang_hooks.builtin_function);
+}
+
+/* Like add_builtin_function, but make sure the scope is the external scope.
+ This is used to delay putting in back end builtin functions until the ISA
+ that defines the builtin is declared via function specific target options,
+ which can save memory for machines like the x86_64 that have multiple ISAs.
+ If this points to the same function as builtin_function, the backend must
+ add all of the builtins at program initialization time. */
+tree
+add_builtin_function_ext_scope (const char *name,
+ tree type,
+ int function_code,
+ enum built_in_class cl,
+ const char *library_name,
+ tree attrs)
+{
+ return add_builtin_function_common (name, type, function_code, cl,
+ library_name, attrs,
+ lang_hooks.builtin_function_ext_scope);
}
tree
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. */
+/* LTO hooks. */
-tree
-get_signed_or_unsigned_type (int unsignedp, tree type)
+/* Used to save and restore any previously active section. */
+static section *saved_section;
+
+
+/* Begin a new LTO output section named NAME. This default implementation
+ saves the old section and emits assembly code to switch to the new
+ section. */
+
+void
+lhd_begin_section (const char *name)
{
- if (!INTEGRAL_TYPE_P (type) || TYPE_UNSIGNED (type) == unsignedp)
- return type;
+ section *section;
+
+ /* Save the old section so we can restore it in lto_end_asm_section. */
+ gcc_assert (!saved_section);
+ saved_section = in_section;
+ if (!saved_section)
+ saved_section = text_section;
- return lang_hooks.types.signed_or_unsigned_type(unsignedp, type);
+ /* Create a new section and switch to it. */
+ section = get_section (name, SECTION_DEBUG, NULL);
+ switch_to_section (section);
}
-/* Default implementation of the signed_or_unsigned_type language hook */
-tree
-lhd_signed_or_unsigned_type (int unsignedp, tree type)
+/* Write DATA of length LEN to the current LTO output section. This default
+ implementation just calls assemble_string and frees BLOCK. */
+
+void
+lhd_append_data (const void *data, size_t len, void *block)
{
- return lang_hooks.types.type_for_size (TYPE_PRECISION (type), unsignedp);
+ if (data)
+ assemble_string ((const char *)data, len);
+ free (block);
+}
+
+
+/* Finish the current LTO output section. This default implementation emits
+ assembly code to switch to any section previously saved by
+ lhd_begin_section. */
+
+void
+lhd_end_section (void)
+{
+ if (saved_section)
+ {
+ switch_to_section (saved_section);
+ saved_section = NULL;
+ }
}
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