Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC 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 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.
-GNU CC 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.
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+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. */
#include "config.h"
#include "system.h"
#include "ggc.h"
#include "expr.h"
#include "c-common.h"
-#include "defaults.h"
+#include "tree-inline.h"
+#include "diagnostic.h"
#include "tm_p.h"
#include "obstack.h"
+#include "c-lex.h"
#include "cpplib.h"
+#include "target.h"
cpp_reader *parse_in; /* Declared in c-lex.h. */
#undef WCHAR_TYPE_SIZE
: "long long unsigned int"))
#endif
+/* The variant of the C language being processed. */
+
+enum c_language_kind c_language;
+
/* The following symbols are subsumed in the c_global_trees array, and
listed here individually for documentation purposes.
tree default_function_type;
- Function types `int (int)', etc.
-
- tree int_ftype_int;
- tree void_ftype;
- tree void_ftype_ptr;
- tree int_ftype_int;
- tree ptr_ftype_sizetype;
-
A VOID_TYPE node, packaged in a TREE_LIST.
tree void_list_node;
- The identifiers __FUNCTION__, __PRETTY_FUNCTION__, and __func__.
+ The lazily created VAR_DECLs for __FUNCTION__, __PRETTY_FUNCTION__,
+ and __func__. (C doesn't generate __FUNCTION__ and__PRETTY_FUNCTION__
+ VAR_DECLS, but C++ does.)
- tree function_id_node;
- tree pretty_function_id_node;
- tree func_id_node;
+ tree function_name_decl_node;
+ tree pretty_function_name_decl_node;
+ tree c99_function_name_decl_node;
+
+ Stack of nested function name VAR_DECLs.
+
+ tree saved_function_name_decls;
*/
int flag_short_wchar;
-/* If non-NULL, dump the tree structure for the entire translation
- unit to this file. */
-
-const char *flag_dump_translation_unit;
-
/* Nonzero means warn about possible violations of sequence point rules. */
int warn_sequence_point;
+/* Nonzero means to warn about compile-time division by zero. */
+int warn_div_by_zero = 1;
+
/* The elements of `ridpointers' are identifier nodes for the reserved
type names and storage classes. It is indexed by a RID_... value. */
tree *ridpointers;
-tree (*make_fname_decl) PARAMS ((tree, const char *, int));
+tree (*make_fname_decl) PARAMS ((tree, int));
/* If non-NULL, the address of a language-specific function that
returns 1 for language-specific statement codes. */
any action required right before expand_function_end is called. */
void (*lang_expand_function_end) PARAMS ((void));
-/* If this variable is defined to a non-NULL value, it will be called
- after the file has been completely parsed. */
-void (*back_end_hook) PARAMS ((tree));
-
/* Nonzero means the expression being parsed will never be evaluated.
This is a count, since unevaluated expressions can nest. */
int skip_evaluation;
-enum attrs {A_PACKED, A_NOCOMMON, A_COMMON, A_NORETURN, A_CONST, A_T_UNION,
- A_NO_CHECK_MEMORY_USAGE, A_NO_INSTRUMENT_FUNCTION,
- A_CONSTRUCTOR, A_DESTRUCTOR, A_MODE, A_SECTION, A_ALIGNED,
- A_UNUSED, A_FORMAT, A_FORMAT_ARG, A_WEAK, A_ALIAS, A_MALLOC,
- A_NO_LIMIT_STACK, A_PURE};
+/* Information about how a function name is generated. */
+struct fname_var_t
+{
+ tree *const decl; /* pointer to the VAR_DECL. */
+ const unsigned rid; /* RID number for the identifier. */
+ const int pretty; /* How pretty is it? */
+};
+
+/* The three ways of getting then name of the current function. */
+
+const struct fname_var_t fname_vars[] =
+{
+ /* C99 compliant __func__, must be first. */
+ {&c99_function_name_decl_node, RID_C99_FUNCTION_NAME, 0},
+ /* GCC __FUNCTION__ compliant. */
+ {&function_name_decl_node, RID_FUNCTION_NAME, 0},
+ /* GCC __PRETTY_FUNCTION__ compliant. */
+ {&pretty_function_name_decl_node, RID_PRETTY_FUNCTION_NAME, 1},
+ {NULL, 0, 0},
+};
-static void add_attribute PARAMS ((enum attrs, const char *,
- int, int, int));
-static void init_attributes PARAMS ((void));
-static int default_valid_lang_attribute PARAMS ((tree, tree, tree, tree));
+static int constant_fits_type_p PARAMS ((tree, tree));
/* Keep a stack of if statements. We record the number of compound
statements seen up to the if keyword, as well as the line number
RECHAIN_STMTS (if_stmt, ELSE_CLAUSE (if_stmt));
}
-/* Make bindings for __FUNCTION__, __PRETTY_FUNCTION__, and __func__. */
+/* Push current bindings for the function name VAR_DECLS. */
void
-declare_function_name ()
+start_fname_decls ()
{
- const char *name, *printable_name;
+ unsigned ix;
+ tree saved = NULL_TREE;
+
+ for (ix = 0; fname_vars[ix].decl; ix++)
+ {
+ tree decl = *fname_vars[ix].decl;
+
+ if (decl)
+ {
+ saved = tree_cons (decl, build_int_2 (ix, 0), saved);
+ *fname_vars[ix].decl = NULL_TREE;
+ }
+ }
+ if (saved || saved_function_name_decls)
+ /* Normally they'll have been NULL, so only push if we've got a
+ stack, or they are non-NULL. */
+ saved_function_name_decls = tree_cons (saved, NULL_TREE,
+ saved_function_name_decls);
+}
+
+/* Finish up the current bindings, adding them into the
+ current function's statement tree. This is done by wrapping the
+ function's body in a COMPOUND_STMT containing these decls too. This
+ must be done _before_ finish_stmt_tree is called. If there is no
+ current function, we must be at file scope and no statements are
+ involved. Pop the previous bindings. */
- if (current_function_decl == NULL)
+void
+finish_fname_decls ()
+{
+ unsigned ix;
+ tree body = NULL_TREE;
+ tree stack = saved_function_name_decls;
+
+ for (; stack && TREE_VALUE (stack); stack = TREE_CHAIN (stack))
+ body = chainon (TREE_VALUE (stack), body);
+
+ if (body)
{
- name = "";
- printable_name = "top level";
+ /* They were called into existence, so add to statement tree. */
+ body = chainon (body,
+ TREE_CHAIN (DECL_SAVED_TREE (current_function_decl)));
+ body = build_stmt (COMPOUND_STMT, body);
+
+ COMPOUND_STMT_NO_SCOPE (body) = 1;
+ TREE_CHAIN (DECL_SAVED_TREE (current_function_decl)) = body;
}
- else
+
+ for (ix = 0; fname_vars[ix].decl; ix++)
+ *fname_vars[ix].decl = NULL_TREE;
+
+ if (stack)
{
- /* Allow functions to be nameless (such as artificial ones). */
- if (DECL_NAME (current_function_decl))
- name = IDENTIFIER_POINTER (DECL_NAME (current_function_decl));
- else
- name = "";
- printable_name = (*decl_printable_name) (current_function_decl, 2);
+ /* We had saved values, restore them. */
+ tree saved;
- /* ISO C99 defines __func__, which is a variable, not a string
- constant, and which is not a defined symbol at file scope. */
- (*make_fname_decl) (func_id_node, name, 0);
+ for (saved = TREE_PURPOSE (stack); saved; saved = TREE_CHAIN (saved))
+ {
+ tree decl = TREE_PURPOSE (saved);
+ unsigned ix = TREE_INT_CST_LOW (TREE_VALUE (saved));
+
+ *fname_vars[ix].decl = decl;
+ }
+ stack = TREE_CHAIN (stack);
}
+ saved_function_name_decls = stack;
+}
+
+/* Return the text name of the current function, suitable prettified
+ by PRETTY_P. */
+
+const char *
+fname_as_string (pretty_p)
+ int pretty_p;
+{
+ const char *name = NULL;
+
+ if (pretty_p)
+ name = (current_function_decl
+ ? (*decl_printable_name) (current_function_decl, 2)
+ : "top level");
+ else if (current_function_decl && DECL_NAME (current_function_decl))
+ name = IDENTIFIER_POINTER (DECL_NAME (current_function_decl));
+ else
+ name = "";
+ return name;
+}
+
+/* Return the text name of the current function, formatted as
+ required by the supplied RID value. */
+
+const char *
+fname_string (rid)
+ unsigned rid;
+{
+ unsigned ix;
- (*make_fname_decl) (function_id_node, name, 0);
- (*make_fname_decl) (pretty_function_id_node, printable_name, 1);
+ for (ix = 0; fname_vars[ix].decl; ix++)
+ if (fname_vars[ix].rid == rid)
+ break;
+ return fname_as_string (fname_vars[ix].pretty);
+}
+
+/* Return the VAR_DECL for a const char array naming the current
+ function. If the VAR_DECL has not yet been created, create it
+ now. RID indicates how it should be formatted and IDENTIFIER_NODE
+ ID is its name (unfortunately C and C++ hold the RID values of
+ keywords in different places, so we can't derive RID from ID in
+ this language independent code. */
+
+tree
+fname_decl (rid, id)
+ unsigned rid;
+ tree id;
+{
+ unsigned ix;
+ tree decl = NULL_TREE;
+
+ for (ix = 0; fname_vars[ix].decl; ix++)
+ if (fname_vars[ix].rid == rid)
+ break;
+
+ decl = *fname_vars[ix].decl;
+ if (!decl)
+ {
+ tree saved_last_tree = last_tree;
+
+ decl = (*make_fname_decl) (id, fname_vars[ix].pretty);
+ if (last_tree != saved_last_tree)
+ {
+ /* We created some statement tree for the decl. This belongs
+ at the start of the function, so remove it now and reinsert
+ it after the function is complete. */
+ tree stmts = TREE_CHAIN (saved_last_tree);
+
+ TREE_CHAIN (saved_last_tree) = NULL_TREE;
+ last_tree = saved_last_tree;
+ saved_function_name_decls = tree_cons (decl, stmts,
+ saved_function_name_decls);
+ }
+ *fname_vars[ix].decl = decl;
+ }
+ if (!ix && !current_function_decl)
+ pedwarn_with_decl (decl, "`%s' is not defined outside of function scope");
+
+ return decl;
}
/* Given a chain of STRING_CST nodes,
combine_strings (strings)
tree strings;
{
- register tree value, t;
- register int length = 1;
+ tree value, t;
+ int length = 1;
int wide_length = 0;
int wide_flag = 0;
int wchar_bytes = TYPE_PRECISION (wchar_type_node) / BITS_PER_UNIT;
if (TREE_CHAIN (strings))
{
/* More than one in the chain, so concatenate. */
- register char *p, *q;
+ char *p, *q;
/* Don't include the \0 at the end of each substring,
except for the last one.
wide_flag = 1;
}
else
- length += (TREE_STRING_LENGTH (t) - 1);
+ {
+ length += (TREE_STRING_LENGTH (t) - 1);
+ if (C_ARTIFICIAL_STRING_P (t) && !in_system_header)
+ warning ("concatenation of string literals with __FUNCTION__ is deprecated. This feature will be removed in future");
+ }
}
/* If anything is wide, the non-wides will be converted,
}
else
{
- int i;
+ int i, j;
for (i = 0; i < len; i++)
{
- if (WCHAR_TYPE_SIZE == HOST_BITS_PER_SHORT)
- ((short *) q)[i] = TREE_STRING_POINTER (t)[i];
+ if (BYTES_BIG_ENDIAN)
+ {
+ for (j=0; j<(WCHAR_TYPE_SIZE / BITS_PER_UNIT)-1; j++)
+ *q++ = 0;
+ *q++ = TREE_STRING_POINTER (t)[i];
+ }
else
- ((int *) q)[i] = TREE_STRING_POINTER (t)[i];
+ {
+ *q++ = TREE_STRING_POINTER (t)[i];
+ for (j=0; j<(WCHAR_TYPE_SIZE / BITS_PER_UNIT)-1; j++)
+ *q++ = 0;
+ }
}
- q += len * wchar_bytes;
}
}
if (wide_flag)
nchars = wide_flag ? length / wchar_bytes : length;
if (pedantic && nchars - 1 > nchars_max && c_language == clk_c)
- pedwarn ("string length `%d' is greater than the minimum length `%d' ISO C%d is required to support",
+ pedwarn ("string length `%d' is greater than the length `%d' ISO C%d compilers are required to support",
nchars - 1, nchars_max, flag_isoc99 ? 99 : 89);
/* Create the array type for the string constant.
return value;
}
\f
-/* To speed up processing of attributes, we maintain an array of
- IDENTIFIER_NODES and the corresponding attribute types. */
-
-/* Array to hold attribute information. */
-
-static struct {enum attrs id; tree name; int min, max, decl_req;} attrtab[50];
-
-static int attrtab_idx = 0;
-
-/* Add an entry to the attribute table above. */
-
-static void
-add_attribute (id, string, min_len, max_len, decl_req)
- enum attrs id;
- const char *string;
- int min_len, max_len;
- int decl_req;
-{
- char buf[100];
-
- attrtab[attrtab_idx].id = id;
- attrtab[attrtab_idx].name = get_identifier (string);
- attrtab[attrtab_idx].min = min_len;
- attrtab[attrtab_idx].max = max_len;
- attrtab[attrtab_idx++].decl_req = decl_req;
-
- sprintf (buf, "__%s__", string);
-
- attrtab[attrtab_idx].id = id;
- attrtab[attrtab_idx].name = get_identifier (buf);
- attrtab[attrtab_idx].min = min_len;
- attrtab[attrtab_idx].max = max_len;
- attrtab[attrtab_idx++].decl_req = decl_req;
-}
-
-/* Initialize attribute table. */
-
-static void
-init_attributes ()
-{
- add_attribute (A_PACKED, "packed", 0, 0, 0);
- add_attribute (A_NOCOMMON, "nocommon", 0, 0, 1);
- add_attribute (A_COMMON, "common", 0, 0, 1);
- add_attribute (A_NORETURN, "noreturn", 0, 0, 1);
- add_attribute (A_NORETURN, "volatile", 0, 0, 1);
- add_attribute (A_UNUSED, "unused", 0, 0, 0);
- add_attribute (A_CONST, "const", 0, 0, 1);
- add_attribute (A_T_UNION, "transparent_union", 0, 0, 0);
- add_attribute (A_CONSTRUCTOR, "constructor", 0, 0, 1);
- add_attribute (A_DESTRUCTOR, "destructor", 0, 0, 1);
- add_attribute (A_MODE, "mode", 1, 1, 1);
- add_attribute (A_SECTION, "section", 1, 1, 1);
- add_attribute (A_ALIGNED, "aligned", 0, 1, 0);
- add_attribute (A_FORMAT, "format", 3, 3, 1);
- add_attribute (A_FORMAT_ARG, "format_arg", 1, 1, 1);
- add_attribute (A_WEAK, "weak", 0, 0, 1);
- add_attribute (A_ALIAS, "alias", 1, 1, 1);
- add_attribute (A_NO_INSTRUMENT_FUNCTION, "no_instrument_function", 0, 0, 1);
- add_attribute (A_NO_CHECK_MEMORY_USAGE, "no_check_memory_usage", 0, 0, 1);
- add_attribute (A_MALLOC, "malloc", 0, 0, 1);
- add_attribute (A_NO_LIMIT_STACK, "no_stack_limit", 0, 0, 1);
- add_attribute (A_PURE, "pure", 0, 0, 1);
-}
-\f
-/* Default implementation of valid_lang_attribute, below. By default, there
- are no language-specific attributes. */
-
-static int
-default_valid_lang_attribute (attr_name, attr_args, decl, type)
- tree attr_name ATTRIBUTE_UNUSED;
- tree attr_args ATTRIBUTE_UNUSED;
- tree decl ATTRIBUTE_UNUSED;
- tree type ATTRIBUTE_UNUSED;
-{
- return 0;
-}
-
-/* Return a 1 if ATTR_NAME and ATTR_ARGS denote a valid language-specific
- attribute for either declaration DECL or type TYPE and 0 otherwise. */
-
-int (*valid_lang_attribute) PARAMS ((tree, tree, tree, tree))
- = default_valid_lang_attribute;
-
-/* Process the attributes listed in ATTRIBUTES and PREFIX_ATTRIBUTES
- and install them in NODE, which is either a DECL (including a TYPE_DECL)
- or a TYPE. PREFIX_ATTRIBUTES can appear after the declaration specifiers
- and declaration modifiers but before the declaration proper. */
-
-void
-decl_attributes (node, attributes, prefix_attributes)
- tree node, attributes, prefix_attributes;
-{
- tree decl = 0, type = 0;
- int is_type = 0;
- tree a;
-
- if (attrtab_idx == 0)
- init_attributes ();
-
- if (DECL_P (node))
- {
- decl = node;
- type = TREE_TYPE (decl);
- is_type = TREE_CODE (node) == TYPE_DECL;
- }
- else if (TYPE_P (node))
- type = node, is_type = 1;
-
-#ifdef PRAGMA_INSERT_ATTRIBUTES
- /* If the code in c-pragma.c wants to insert some attributes then
- allow it to do so. Do this before allowing machine back ends to
- insert attributes, so that they have the opportunity to override
- anything done here. */
- PRAGMA_INSERT_ATTRIBUTES (node, & attributes, & prefix_attributes);
-#endif
-
-#ifdef INSERT_ATTRIBUTES
- INSERT_ATTRIBUTES (node, & attributes, & prefix_attributes);
-#endif
-
- attributes = chainon (prefix_attributes, attributes);
-
- for (a = attributes; a; a = TREE_CHAIN (a))
- {
- tree name = TREE_PURPOSE (a);
- tree args = TREE_VALUE (a);
- int i;
- enum attrs id;
-
- for (i = 0; i < attrtab_idx; i++)
- if (attrtab[i].name == name)
- break;
-
- if (i == attrtab_idx)
- {
- if (! valid_machine_attribute (name, args, decl, type)
- && ! (* valid_lang_attribute) (name, args, decl, type))
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER (name));
- else if (decl != 0)
- type = TREE_TYPE (decl);
- continue;
- }
- else if (attrtab[i].decl_req && decl == 0)
- {
- warning ("`%s' attribute does not apply to types",
- IDENTIFIER_POINTER (name));
- continue;
- }
- else if (list_length (args) < attrtab[i].min
- || list_length (args) > attrtab[i].max)
- {
- error ("wrong number of arguments specified for `%s' attribute",
- IDENTIFIER_POINTER (name));
- continue;
- }
-
- id = attrtab[i].id;
- switch (id)
- {
- case A_PACKED:
- if (is_type)
- TYPE_PACKED (type) = 1;
- else if (TREE_CODE (decl) == FIELD_DECL)
- DECL_PACKED (decl) = 1;
- /* We can't set DECL_PACKED for a VAR_DECL, because the bit is
- used for DECL_REGISTER. It wouldn't mean anything anyway. */
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_NOCOMMON:
- if (TREE_CODE (decl) == VAR_DECL)
- DECL_COMMON (decl) = 0;
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_COMMON:
- if (TREE_CODE (decl) == VAR_DECL)
- DECL_COMMON (decl) = 1;
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_NORETURN:
- if (TREE_CODE (decl) == FUNCTION_DECL)
- TREE_THIS_VOLATILE (decl) = 1;
- else if (TREE_CODE (type) == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
- TREE_TYPE (decl) = type
- = build_pointer_type
- (build_type_variant (TREE_TYPE (type),
- TREE_READONLY (TREE_TYPE (type)), 1));
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_MALLOC:
- if (TREE_CODE (decl) == FUNCTION_DECL)
- DECL_IS_MALLOC (decl) = 1;
- /* ??? TODO: Support types. */
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_UNUSED:
- if (is_type)
- if (decl)
- TREE_USED (decl) = 1;
- else
- TREE_USED (type) = 1;
- else if (TREE_CODE (decl) == PARM_DECL
- || TREE_CODE (decl) == VAR_DECL
- || TREE_CODE (decl) == FUNCTION_DECL
- || TREE_CODE (decl) == LABEL_DECL)
- TREE_USED (decl) = 1;
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_CONST:
- if (TREE_CODE (decl) == FUNCTION_DECL)
- TREE_READONLY (decl) = 1;
- else if (TREE_CODE (type) == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
- TREE_TYPE (decl) = type
- = build_pointer_type
- (build_type_variant (TREE_TYPE (type), 1,
- TREE_THIS_VOLATILE (TREE_TYPE (type))));
- else
- warning ( "`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_PURE:
- if (TREE_CODE (decl) == FUNCTION_DECL)
- DECL_IS_PURE (decl) = 1;
- /* ??? TODO: Support types. */
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
-
- case A_T_UNION:
- if (is_type
- && TREE_CODE (type) == UNION_TYPE
- && (decl == 0
- || (TYPE_FIELDS (type) != 0
- && TYPE_MODE (type) == DECL_MODE (TYPE_FIELDS (type)))))
- TYPE_TRANSPARENT_UNION (type) = 1;
- else if (decl != 0 && TREE_CODE (decl) == PARM_DECL
- && TREE_CODE (type) == UNION_TYPE
- && TYPE_MODE (type) == DECL_MODE (TYPE_FIELDS (type)))
- DECL_TRANSPARENT_UNION (decl) = 1;
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_CONSTRUCTOR:
- if (TREE_CODE (decl) == FUNCTION_DECL
- && TREE_CODE (type) == FUNCTION_TYPE
- && decl_function_context (decl) == 0)
- {
- DECL_STATIC_CONSTRUCTOR (decl) = 1;
- TREE_USED (decl) = 1;
- }
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_DESTRUCTOR:
- if (TREE_CODE (decl) == FUNCTION_DECL
- && TREE_CODE (type) == FUNCTION_TYPE
- && decl_function_context (decl) == 0)
- {
- DECL_STATIC_DESTRUCTOR (decl) = 1;
- TREE_USED (decl) = 1;
- }
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_MODE:
- if (TREE_CODE (TREE_VALUE (args)) != IDENTIFIER_NODE)
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- else
- {
- int j;
- const char *p = IDENTIFIER_POINTER (TREE_VALUE (args));
- int len = strlen (p);
- enum machine_mode mode = VOIDmode;
- tree typefm;
-
- if (len > 4 && p[0] == '_' && p[1] == '_'
- && p[len - 1] == '_' && p[len - 2] == '_')
- {
- char *newp = (char *) alloca (len - 1);
-
- strcpy (newp, &p[2]);
- newp[len - 4] = '\0';
- p = newp;
- }
-
- /* Give this decl a type with the specified mode.
- First check for the special modes. */
- if (! strcmp (p, "byte"))
- mode = byte_mode;
- else if (!strcmp (p, "word"))
- mode = word_mode;
- else if (! strcmp (p, "pointer"))
- mode = ptr_mode;
- else
- for (j = 0; j < NUM_MACHINE_MODES; j++)
- if (!strcmp (p, GET_MODE_NAME (j)))
- mode = (enum machine_mode) j;
-
- if (mode == VOIDmode)
- error ("unknown machine mode `%s'", p);
- else if (0 == (typefm = type_for_mode (mode,
- TREE_UNSIGNED (type))))
- error ("no data type for mode `%s'", p);
- else
- {
- if (TYPE_PRECISION (typefm) > (TREE_UNSIGNED (type)
- ? TYPE_PRECISION(uintmax_type_node)
- : TYPE_PRECISION(intmax_type_node))
- && pedantic)
- pedwarn ("type with more precision than %s",
- TREE_UNSIGNED (type) ? "uintmax_t" : "intmax_t");
- TREE_TYPE (decl) = type = typefm;
- DECL_SIZE (decl) = DECL_SIZE_UNIT (decl) = 0;
- layout_decl (decl, 0);
- }
- }
- break;
-
- case A_SECTION:
-#ifdef ASM_OUTPUT_SECTION_NAME
- if ((TREE_CODE (decl) == FUNCTION_DECL
- || TREE_CODE (decl) == VAR_DECL)
- && TREE_CODE (TREE_VALUE (args)) == STRING_CST)
- {
- if (TREE_CODE (decl) == VAR_DECL
- && current_function_decl != NULL_TREE
- && ! TREE_STATIC (decl))
- error_with_decl (decl,
- "section attribute cannot be specified for local variables");
- /* The decl may have already been given a section attribute from
- a previous declaration. Ensure they match. */
- else if (DECL_SECTION_NAME (decl) != NULL_TREE
- && strcmp (TREE_STRING_POINTER (DECL_SECTION_NAME (decl)),
- TREE_STRING_POINTER (TREE_VALUE (args))) != 0)
- error_with_decl (node,
- "section of `%s' conflicts with previous declaration");
- else
- DECL_SECTION_NAME (decl) = TREE_VALUE (args);
- }
- else
- error_with_decl (node,
- "section attribute not allowed for `%s'");
-#else
- error_with_decl (node,
- "section attributes are not supported for this target");
-#endif
- break;
-
- case A_ALIGNED:
- {
- tree align_expr
- = (args ? TREE_VALUE (args)
- : size_int (BIGGEST_ALIGNMENT / BITS_PER_UNIT));
- int i;
-
- /* Strip any NOPs of any kind. */
- while (TREE_CODE (align_expr) == NOP_EXPR
- || TREE_CODE (align_expr) == CONVERT_EXPR
- || TREE_CODE (align_expr) == NON_LVALUE_EXPR)
- align_expr = TREE_OPERAND (align_expr, 0);
-
- if (TREE_CODE (align_expr) != INTEGER_CST)
- {
- error ("requested alignment is not a constant");
- continue;
- }
-
- if ((i = tree_log2 (align_expr)) == -1)
- error ("requested alignment is not a power of 2");
- else if (i > HOST_BITS_PER_INT - 2)
- error ("requested alignment is too large");
- else if (is_type)
- {
- /* If we have a TYPE_DECL, then copy the type, so that we
- don't accidentally modify a builtin type. See pushdecl. */
- if (decl && TREE_TYPE (decl) != error_mark_node
- && DECL_ORIGINAL_TYPE (decl) == NULL_TREE)
- {
- tree tt = TREE_TYPE (decl);
- DECL_ORIGINAL_TYPE (decl) = tt;
- tt = build_type_copy (tt);
- TYPE_NAME (tt) = decl;
- TREE_USED (tt) = TREE_USED (decl);
- TREE_TYPE (decl) = tt;
- type = tt;
- }
-
- TYPE_ALIGN (type) = (1 << i) * BITS_PER_UNIT;
- TYPE_USER_ALIGN (type) = 1;
- }
- else if (TREE_CODE (decl) != VAR_DECL
- && TREE_CODE (decl) != FIELD_DECL)
- error_with_decl (decl,
- "alignment may not be specified for `%s'");
- else
- {
- DECL_ALIGN (decl) = (1 << i) * BITS_PER_UNIT;
- DECL_USER_ALIGN (decl) = 1;
- }
- }
- break;
-
- case A_FORMAT:
- decl_handle_format_attribute (decl, args);
- break;
-
- case A_FORMAT_ARG:
- decl_handle_format_arg_attribute (decl, args);
- break;
-
- case A_WEAK:
- declare_weak (decl);
- break;
-
- case A_ALIAS:
- if ((TREE_CODE (decl) == FUNCTION_DECL && DECL_INITIAL (decl))
- || (TREE_CODE (decl) != FUNCTION_DECL && ! DECL_EXTERNAL (decl)))
- error_with_decl (decl,
- "`%s' defined both normally and as an alias");
- else if (decl_function_context (decl) == 0)
- {
- tree id;
-
- id = TREE_VALUE (args);
- if (TREE_CODE (id) != STRING_CST)
- {
- error ("alias arg not a string");
- break;
- }
- id = get_identifier (TREE_STRING_POINTER (id));
- /* This counts as a use of the object pointed to. */
- TREE_USED (id) = 1;
-
- if (TREE_CODE (decl) == FUNCTION_DECL)
- DECL_INITIAL (decl) = error_mark_node;
- else
- DECL_EXTERNAL (decl) = 0;
- assemble_alias (decl, id);
- }
- else
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- break;
-
- case A_NO_CHECK_MEMORY_USAGE:
- if (TREE_CODE (decl) != FUNCTION_DECL)
- {
- error_with_decl (decl,
- "`%s' attribute applies only to functions",
- IDENTIFIER_POINTER (name));
- }
- else if (DECL_INITIAL (decl))
- {
- error_with_decl (decl,
- "can't set `%s' attribute after definition",
- IDENTIFIER_POINTER (name));
- }
- else
- DECL_NO_CHECK_MEMORY_USAGE (decl) = 1;
- break;
-
- case A_NO_INSTRUMENT_FUNCTION:
- if (TREE_CODE (decl) != FUNCTION_DECL)
- {
- error_with_decl (decl,
- "`%s' attribute applies only to functions",
- IDENTIFIER_POINTER (name));
- }
- else if (DECL_INITIAL (decl))
- {
- error_with_decl (decl,
- "can't set `%s' attribute after definition",
- IDENTIFIER_POINTER (name));
- }
- else
- DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (decl) = 1;
- break;
-
- case A_NO_LIMIT_STACK:
- if (TREE_CODE (decl) != FUNCTION_DECL)
- {
- error_with_decl (decl,
- "`%s' attribute applies only to functions",
- IDENTIFIER_POINTER (name));
- }
- else if (DECL_INITIAL (decl))
- {
- error_with_decl (decl,
- "can't set `%s' attribute after definition",
- IDENTIFIER_POINTER (name));
- }
- else
- DECL_NO_LIMIT_STACK (decl) = 1;
- break;
- }
- }
-}
-
-/* Split SPECS_ATTRS, a list of declspecs and prefix attributes, into two
- lists. SPECS_ATTRS may also be just a typespec (eg: RECORD_TYPE).
-
- The head of the declspec list is stored in DECLSPECS.
- The head of the attribute list is stored in PREFIX_ATTRIBUTES.
-
- Note that attributes in SPECS_ATTRS are stored in the TREE_PURPOSE of
- the list elements. We drop the containing TREE_LIST nodes and link the
- resulting attributes together the way decl_attributes expects them. */
-
-void
-split_specs_attrs (specs_attrs, declspecs, prefix_attributes)
- tree specs_attrs;
- tree *declspecs, *prefix_attributes;
-{
- tree t, s, a, next, specs, attrs;
-
- /* This can happen after an __extension__ in pedantic mode. */
- if (specs_attrs != NULL_TREE
- && TREE_CODE (specs_attrs) == INTEGER_CST)
- {
- *declspecs = NULL_TREE;
- *prefix_attributes = NULL_TREE;
- return;
- }
-
- /* This can happen in c++ (eg: decl: typespec initdecls ';'). */
- if (specs_attrs != NULL_TREE
- && TREE_CODE (specs_attrs) != TREE_LIST)
- {
- *declspecs = specs_attrs;
- *prefix_attributes = NULL_TREE;
- return;
- }
-
- /* Remember to keep the lists in the same order, element-wise. */
-
- specs = s = NULL_TREE;
- attrs = a = NULL_TREE;
- for (t = specs_attrs; t; t = next)
- {
- next = TREE_CHAIN (t);
- /* Declspecs have a non-NULL TREE_VALUE. */
- if (TREE_VALUE (t) != NULL_TREE)
- {
- if (specs == NULL_TREE)
- specs = s = t;
- else
- {
- TREE_CHAIN (s) = t;
- s = t;
- }
- }
- else
- {
- if (attrs == NULL_TREE)
- attrs = a = TREE_PURPOSE (t);
- else
- {
- TREE_CHAIN (a) = TREE_PURPOSE (t);
- a = TREE_PURPOSE (t);
- }
- /* More attrs can be linked here, move A to the end. */
- while (TREE_CHAIN (a) != NULL_TREE)
- a = TREE_CHAIN (a);
- }
- }
-
- /* Terminate the lists. */
- if (s != NULL_TREE)
- TREE_CHAIN (s) = NULL_TREE;
- if (a != NULL_TREE)
- TREE_CHAIN (a) = NULL_TREE;
-
- /* All done. */
- *declspecs = specs;
- *prefix_attributes = attrs;
-}
-
-/* Strip attributes from SPECS_ATTRS, a list of declspecs and attributes.
- This function is used by the parser when a rule will accept attributes
- in a particular position, but we don't want to support that just yet.
-
- A warning is issued for every ignored attribute. */
-
-tree
-strip_attrs (specs_attrs)
- tree specs_attrs;
-{
- tree specs, attrs;
-
- split_specs_attrs (specs_attrs, &specs, &attrs);
-
- while (attrs)
- {
- warning ("`%s' attribute ignored",
- IDENTIFIER_POINTER (TREE_PURPOSE (attrs)));
- attrs = TREE_CHAIN (attrs);
- }
-
- return specs;
-}
-\f
static int is_valid_printf_arglist PARAMS ((tree));
static rtx c_expand_builtin PARAMS ((tree, rtx, enum machine_mode, enum expand_modifier));
static rtx c_expand_builtin_printf PARAMS ((tree, rtx, enum machine_mode,
- enum expand_modifier, int));
+ enum expand_modifier, int, int));
static rtx c_expand_builtin_fprintf PARAMS ((tree, rtx, enum machine_mode,
- enum expand_modifier, int));
+ enum expand_modifier, int, int));
\f
/* Print a warning if a constant expression had overflow in folding.
Invoke this function on every expression that the language
}
}
+/* Nonzero if constant C has a value that is permissible
+ for type TYPE (an INTEGER_TYPE). */
+
+static int
+constant_fits_type_p (c, type)
+ tree c, type;
+{
+ if (TREE_CODE (c) == INTEGER_CST)
+ return int_fits_type_p (c, type);
+
+ c = convert (type, c);
+ return !TREE_OVERFLOW (c);
+}
+
/* Convert EXPR to TYPE, warning about conversion problems with constants.
Invoke this function on every expression that is converted implicitly,
i.e. because of language rules and not because of an explicit cast. */
don't warn unless pedantic. */
if ((pedantic
|| TREE_UNSIGNED (type)
- || ! int_fits_type_p (expr, unsigned_type (type)))
+ || ! constant_fits_type_p (expr, unsigned_type (type)))
&& skip_evaluation == 0)
warning ("overflow in implicit constant conversion");
}
}
}
-/* Return nonzero if X is a tree that can be verified by the sequence poitn
+/* Return nonzero if X is a tree that can be verified by the sequence point
warnings. */
static int
warning_candidate_p (x)
enum tree_code code;
char class;
+ /* X may be NULL if it is the operand of an empty statement expression
+ ({ }). */
+ if (x == NULL)
+ return;
+
restart:
code = TREE_CODE (x);
class = TREE_CODE_CLASS (code);
{
/* Do default conversion if safe and possibly important,
in case within ({...}). */
- if ((TREE_CODE (TREE_TYPE (expr)) == ARRAY_TYPE && lvalue_p (expr))
+ if ((TREE_CODE (TREE_TYPE (expr)) == ARRAY_TYPE
+ && (flag_isoc99 || lvalue_p (expr)))
|| TREE_CODE (TREE_TYPE (expr)) == FUNCTION_TYPE)
expr = default_conversion (expr);
return unsignedp ? widest_unsigned_literal_type_node
: widest_integer_literal_type_node;
- if (mode == TYPE_MODE (intQI_type_node))
+ if (mode == QImode)
return unsignedp ? unsigned_intQI_type_node : intQI_type_node;
- if (mode == TYPE_MODE (intHI_type_node))
+ if (mode == HImode)
return unsignedp ? unsigned_intHI_type_node : intHI_type_node;
- if (mode == TYPE_MODE (intSI_type_node))
+ if (mode == SImode)
return unsignedp ? unsigned_intSI_type_node : intSI_type_node;
- if (mode == TYPE_MODE (intDI_type_node))
+ if (mode == DImode)
return unsignedp ? unsigned_intDI_type_node : intDI_type_node;
#if HOST_BITS_PER_WIDE_INT >= 64
return build_pointer_type (integer_type_node);
#ifdef VECTOR_MODE_SUPPORTED_P
- if (mode == TYPE_MODE (V4SF_type_node) && VECTOR_MODE_SUPPORTED_P (mode))
- return V4SF_type_node;
- if (mode == TYPE_MODE (V4SI_type_node) && VECTOR_MODE_SUPPORTED_P (mode))
- return V4SI_type_node;
- if (mode == TYPE_MODE (V2SI_type_node) && VECTOR_MODE_SUPPORTED_P (mode))
- return V2SI_type_node;
- if (mode == TYPE_MODE (V4HI_type_node) && VECTOR_MODE_SUPPORTED_P (mode))
- return V4HI_type_node;
- if (mode == TYPE_MODE (V8QI_type_node) && VECTOR_MODE_SUPPORTED_P (mode))
- return V8QI_type_node;
+ if (VECTOR_MODE_SUPPORTED_P (mode))
+ {
+ switch (mode)
+ {
+ case V16QImode:
+ return unsignedp ? unsigned_V16QI_type_node : V16QI_type_node;
+ case V8HImode:
+ return unsignedp ? unsigned_V8HI_type_node : V8HI_type_node;
+ case V4SImode:
+ return unsignedp ? unsigned_V4SI_type_node : V4SI_type_node;
+ case V2SImode:
+ return unsignedp ? unsigned_V2SI_type_node : V2SI_type_node;
+ case V4HImode:
+ return unsignedp ? unsigned_V4HI_type_node : V4HI_type_node;
+ case V8QImode:
+ return unsignedp ? unsigned_V8QI_type_node : V8QI_type_node;
+ case V4SFmode:
+ return V4SF_type_node;
+ case V2SFmode:
+ return V2SF_type_node;
+ default:
+ break;
+ }
+ }
#endif
return 0;
}
-/* Return an unsigned type the same as TYPE in other respects. */
+/* Return an unsigned type the same as TYPE in other respects. */
tree
unsigned_type (type)
tree type;
if (TYPE_PRECISION (type) == TYPE_PRECISION (widest_integer_literal_type_node))
return (unsignedp ? widest_unsigned_literal_type_node
: widest_integer_literal_type_node);
+
+#if HOST_BITS_PER_WIDE_INT >= 64
+ if (TYPE_PRECISION (type) == TYPE_PRECISION (intTI_type_node))
+ return unsignedp ? unsigned_intTI_type_node : intTI_type_node;
+#endif
+ if (TYPE_PRECISION (type) == TYPE_PRECISION (intDI_type_node))
+ return unsignedp ? unsigned_intDI_type_node : intDI_type_node;
+ if (TYPE_PRECISION (type) == TYPE_PRECISION (intSI_type_node))
+ return unsignedp ? unsigned_intSI_type_node : intSI_type_node;
+ if (TYPE_PRECISION (type) == TYPE_PRECISION (intHI_type_node))
+ return unsignedp ? unsigned_intHI_type_node : intHI_type_node;
+ if (TYPE_PRECISION (type) == TYPE_PRECISION (intQI_type_node))
+ return unsignedp ? unsigned_intQI_type_node : intQI_type_node;
+
return type;
}
\f
binary_op_error (code)
enum tree_code code;
{
- register const char *opname;
+ const char *opname;
switch (code)
{
tree *restype_ptr;
enum tree_code *rescode_ptr;
{
- register tree type;
+ tree type;
tree op0 = *op0_ptr;
tree op1 = *op1_ptr;
int unsignedp0, unsignedp1;
if (TREE_CONSTANT (primop0)
&& ! integer_zerop (primop1) && ! real_zerop (primop1))
{
- register tree tem = primop0;
- register int temi = unsignedp0;
+ tree tem = primop0;
+ int temi = unsignedp0;
primop0 = primop1;
primop1 = tem;
tem = op0;
return real_zerop (expr) ? boolean_false_node : boolean_true_node;
case ADDR_EXPR:
- /* If we are taking the address of a external decl, it might be zero
+ /* If we are taking the address of an external decl, it might be zero
if it is weak, so we cannot optimize. */
if (DECL_P (TREE_OPERAND (expr, 0))
&& DECL_EXTERNAL (TREE_OPERAND (expr, 0)))
|| !C_TYPE_OBJECT_OR_INCOMPLETE_P (TREE_TYPE (TREE_TYPE (decl))))
error ("invalid use of `restrict'");
else if (flag_strict_aliasing)
- {
- /* No two restricted pointers can point at the same thing.
- However, a restricted pointer can point at the same thing
- as an unrestricted pointer, if that unrestricted pointer
- is based on the restricted pointer. So, we make the
- alias set for the restricted pointer a subset of the
- alias set for the type pointed to by the type of the
- decl. */
-
- HOST_WIDE_INT pointed_to_alias_set
- = get_alias_set (TREE_TYPE (TREE_TYPE (decl)));
-
- if (pointed_to_alias_set == 0)
- /* It's not legal to make a subset of alias set zero. */
- ;
- else
- {
- DECL_POINTER_ALIAS_SET (decl) = new_alias_set ();
- record_alias_subset (pointed_to_alias_set,
- DECL_POINTER_ALIAS_SET (decl));
- }
- }
+ /* Indicate we need to make a unique alias set for this pointer.
+ We can't do it here because it might be pointing to an
+ incomplete type. */
+ DECL_POINTER_ALIAS_SET (decl) = -2;
}
}
or a type. Return -1 if we don't do anything special. */
HOST_WIDE_INT
-lang_get_alias_set (t)
+c_common_get_alias_set (t)
tree t;
{
tree u;
Technically, this approach is actually more conservative that
it needs to be. In particular, `const int *' and `int *'
- chould be in different alias sets, according to the C and C++
+ should be in different alias sets, according to the C and C++
standard, since their types are not the same, and so,
technically, an `int **' and `const int **' cannot point at
the same thing.
int *ip;
int **ipp = &ip;
- const int* const* cipp = &ip;
+ const int* const* cipp = &ipp;
And, it doesn't make sense for that to be legal unless you
can dereference IPP and CIPP. So, we ignore cv-qualifiers on
if (t1 != t)
return get_alias_set (t1);
}
- /* It's not yet safe to use alias sets for classes in C++ because
- the TYPE_FIELDs list for a class doesn't mention base classes. */
- else if (c_language == clk_cplusplus && AGGREGATE_TYPE_P (t))
- return 0;
return -1;
}
+\f
+/* Implement the __alignof keyword: Return the minimum required
+ alignment of TYPE, measured in bytes. */
+
+tree
+c_alignof (type)
+ tree type;
+{
+ enum tree_code code = TREE_CODE (type);
+ tree t;
+
+ /* In C++, sizeof applies to the referent. Handle alignof the same way. */
+ if (code == REFERENCE_TYPE)
+ {
+ type = TREE_TYPE (type);
+ code = TREE_CODE (type);
+ }
+
+ if (code == FUNCTION_TYPE)
+ t = size_int (FUNCTION_BOUNDARY / BITS_PER_UNIT);
+ else if (code == VOID_TYPE || code == ERROR_MARK)
+ t = size_one_node;
+ else if (!COMPLETE_TYPE_P (type))
+ {
+ error ("__alignof__ applied to an incomplete type");
+ t = size_zero_node;
+ }
+ else
+ t = size_int (TYPE_ALIGN (type) / BITS_PER_UNIT);
+
+ return fold (build1 (NOP_EXPR, c_size_type_node, t));
+}
+
+/* Implement the __alignof keyword: Return the minimum required
+ alignment of EXPR, measured in bytes. For VAR_DECL's and
+ FIELD_DECL's return DECL_ALIGN (which can be set from an
+ "aligned" __attribute__ specification). */
+
+tree
+c_alignof_expr (expr)
+ tree expr;
+{
+ tree t;
+
+ if (TREE_CODE (expr) == VAR_DECL)
+ t = size_int (DECL_ALIGN (expr) / BITS_PER_UNIT);
+
+ else if (TREE_CODE (expr) == COMPONENT_REF
+ && DECL_C_BIT_FIELD (TREE_OPERAND (expr, 1)))
+ {
+ error ("`__alignof' applied to a bit-field");
+ t = size_one_node;
+ }
+ else if (TREE_CODE (expr) == COMPONENT_REF
+ && TREE_CODE (TREE_OPERAND (expr, 1)) == FIELD_DECL)
+ t = size_int (DECL_ALIGN (TREE_OPERAND (expr, 1)) / BITS_PER_UNIT);
+
+ else if (TREE_CODE (expr) == INDIRECT_REF)
+ {
+ tree t = TREE_OPERAND (expr, 0);
+ tree best = t;
+ int bestalign = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (t)));
+
+ while (TREE_CODE (t) == NOP_EXPR
+ && TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) == POINTER_TYPE)
+ {
+ int thisalign;
+
+ t = TREE_OPERAND (t, 0);
+ thisalign = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (t)));
+ if (thisalign > bestalign)
+ best = t, bestalign = thisalign;
+ }
+ return c_alignof (TREE_TYPE (TREE_TYPE (best)));
+ }
+ else
+ return c_alignof (TREE_TYPE (expr));
+
+ return fold (build1 (NOP_EXPR, c_size_type_node, t));
+}
+\f
+/* Give the specifications for the format attributes, used by C and all
+ descendents. */
+
+static const struct attribute_spec c_format_attribute_table[] =
+{
+ /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
+ { "format", 3, 3, false, true, true,
+ handle_format_attribute },
+ { "format_arg", 1, 1, false, true, true,
+ handle_format_arg_attribute },
+ { NULL, 0, 0, false, false, false, NULL }
+};
/* Build tree nodes and builtin functions common to both C and C++ language
frontends. */
void
c_common_nodes_and_builtins ()
{
+ enum builtin_type
+ {
+#define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME,
+#define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME,
+#define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME,
+#define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME,
+#define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
+#define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
+#define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
+#define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME,
+#define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME,
+#define DEF_POINTER_TYPE(NAME, TYPE) NAME,
+#include "builtin-types.def"
+#undef DEF_PRIMITIVE_TYPE
+#undef DEF_FUNCTION_TYPE_0
+#undef DEF_FUNCTION_TYPE_1
+#undef DEF_FUNCTION_TYPE_2
+#undef DEF_FUNCTION_TYPE_3
+#undef DEF_FUNCTION_TYPE_4
+#undef DEF_FUNCTION_TYPE_VAR_0
+#undef DEF_FUNCTION_TYPE_VAR_1
+#undef DEF_FUNCTION_TYPE_VAR_2
+#undef DEF_POINTER_TYPE
+ BT_LAST
+ };
+
+ typedef enum builtin_type builtin_type;
+
+ tree builtin_types[(int)BT_LAST];
int wchar_type_size;
tree array_domain_type;
- tree temp;
- tree memcpy_ftype, memset_ftype, strlen_ftype;
- tree bzero_ftype, bcmp_ftype, puts_ftype, printf_ftype;
- tree fputs_ftype, fputc_ftype, fwrite_ftype, fprintf_ftype;
- tree endlink, int_endlink, double_endlink, unsigned_endlink;
- tree cstring_endlink, sizetype_endlink;
- tree ptr_ftype, ptr_ftype_unsigned;
- tree void_ftype_any, void_ftype_int, int_ftype_any;
- tree double_ftype_double, double_ftype_double_double;
- tree float_ftype_float, ldouble_ftype_ldouble;
- tree cfloat_ftype_cfloat, cdouble_ftype_cdouble, cldouble_ftype_cldouble;
- tree float_ftype_cfloat, double_ftype_cdouble, ldouble_ftype_cldouble;
- tree int_ftype_cptr_cptr_sizet, sizet_ftype_cstring_cstring;
- tree int_ftype_cstring_cstring, string_ftype_string_cstring;
- tree string_ftype_cstring_int, string_ftype_cstring_cstring;
- tree string_ftype_string_cstring_sizet, int_ftype_cstring_cstring_sizet;
- tree long_ftype_long;
- tree longlong_ftype_longlong;
- tree intmax_ftype_intmax;
/* Either char* or void*. */
tree traditional_ptr_type_node;
/* Either const char* or const void*. */
tree traditional_cptr_type_node;
tree traditional_len_type_node;
- tree traditional_len_endlink;
tree va_list_ref_type_node;
tree va_list_arg_type_node;
+ /* We must initialize this before any builtin functions (which might have
+ attributes) are declared. (c_common_init is too late.) */
+ format_attribute_table = c_format_attribute_table;
+
/* Define `int' and `char' first so that dbx will output them first. */
- record_builtin_type (RID_INT, NULL_PTR, integer_type_node);
+ record_builtin_type (RID_INT, NULL, integer_type_node);
record_builtin_type (RID_CHAR, "char", char_type_node);
/* `signed' is the same as `int'. FIXME: the declarations of "signed",
"unsigned long", "long long unsigned" and "unsigned short" were in C++
but not C. Are the conditionals here needed? */
if (c_language == clk_cplusplus)
- record_builtin_type (RID_SIGNED, NULL_PTR, integer_type_node);
+ record_builtin_type (RID_SIGNED, NULL, integer_type_node);
record_builtin_type (RID_LONG, "long int", long_integer_type_node);
record_builtin_type (RID_UNSIGNED, "unsigned int", unsigned_type_node);
record_builtin_type (RID_MAX, "long unsigned int",
build_common_tree_nodes_2 (flag_short_double);
- record_builtin_type (RID_FLOAT, NULL_PTR, float_type_node);
- record_builtin_type (RID_DOUBLE, NULL_PTR, double_type_node);
+ record_builtin_type (RID_FLOAT, NULL, float_type_node);
+ record_builtin_type (RID_DOUBLE, NULL, double_type_node);
record_builtin_type (RID_MAX, "long double", long_double_type_node);
pushdecl (build_decl (TYPE_DECL, get_identifier ("complex int"),
pushdecl (build_decl (TYPE_DECL, get_identifier ("complex long double"),
complex_long_double_type_node));
- record_builtin_type (RID_VOID, NULL_PTR, void_type_node);
+ record_builtin_type (RID_VOID, NULL, void_type_node);
+
+ void_zero_node = build_int_2 (0, 0);
+ TREE_TYPE (void_zero_node) = void_type_node;
void_list_node = build_void_list_node ();
int_array_type_node
= build_array_type (integer_type_node, array_domain_type);
-#ifdef MD_INIT_BUILTINS
- MD_INIT_BUILTINS;
-#endif
+ string_type_node = build_pointer_type (char_type_node);
+ const_string_type_node
+ = build_pointer_type (build_qualified_type
+ (char_type_node, TYPE_QUAL_CONST));
+
+ traditional_ptr_type_node = ((flag_traditional &&
+ c_language != clk_cplusplus)
+ ? string_type_node : ptr_type_node);
+ traditional_cptr_type_node = ((flag_traditional &&
+ c_language != clk_cplusplus)
+ ? const_string_type_node : const_ptr_type_node);
+
+ (*targetm.init_builtins) ();
/* This is special for C++ so functions can be overloaded. */
wchar_type_node = get_identifier (flag_short_wchar
wchar_array_type_node
= build_array_type (wchar_type_node, array_domain_type);
- string_type_node = build_pointer_type (char_type_node);
- const_string_type_node
- = build_pointer_type (build_type_variant (char_type_node, 1, 0));
-
wint_type_node =
TREE_TYPE (identifier_global_value (get_identifier (WINT_TYPE)));
va_list_ref_type_node = build_reference_type (va_list_type_node);
}
- endlink = void_list_node;
- int_endlink = tree_cons (NULL_TREE, integer_type_node, endlink);
- double_endlink = tree_cons (NULL_TREE, double_type_node, endlink);
- unsigned_endlink = tree_cons (NULL_TREE, unsigned_type_node, endlink);
- cstring_endlink = tree_cons (NULL_TREE, const_string_type_node, endlink);
-
- ptr_ftype = build_function_type (ptr_type_node, NULL_TREE);
- ptr_ftype_unsigned = build_function_type (ptr_type_node, unsigned_endlink);
- sizetype_endlink = tree_cons (NULL_TREE, TYPE_DOMAIN (sizetype), endlink);
- /* We realloc here because sizetype could be int or unsigned. S'ok. */
- ptr_ftype_sizetype = build_function_type (ptr_type_node, sizetype_endlink);
-
- int_ftype_any = build_function_type (integer_type_node, NULL_TREE);
- void_ftype_any = build_function_type (void_type_node, NULL_TREE);
- void_ftype = build_function_type (void_type_node, endlink);
- void_ftype_int = build_function_type (void_type_node, int_endlink);
- void_ftype_ptr
- = build_function_type (void_type_node,
- tree_cons (NULL_TREE, ptr_type_node, endlink));
-
- float_ftype_float
- = build_function_type (float_type_node,
- tree_cons (NULL_TREE, float_type_node, endlink));
-
- double_ftype_double
- = build_function_type (double_type_node, double_endlink);
-
- ldouble_ftype_ldouble
- = build_function_type (long_double_type_node,
- tree_cons (NULL_TREE, long_double_type_node,
- endlink));
-
- double_ftype_double_double
- = build_function_type (double_type_node,
- tree_cons (NULL_TREE, double_type_node,
- double_endlink));
-
- cfloat_ftype_cfloat
- = build_function_type (complex_float_type_node,
- tree_cons (NULL_TREE, complex_float_type_node,
- endlink));
- cdouble_ftype_cdouble
- = build_function_type (complex_double_type_node,
- tree_cons (NULL_TREE, complex_double_type_node,
- endlink));
- cldouble_ftype_cldouble
- = build_function_type (complex_long_double_type_node,
- tree_cons (NULL_TREE, complex_long_double_type_node,
- endlink));
-
- float_ftype_cfloat
- = build_function_type (float_type_node,
- tree_cons (NULL_TREE, complex_float_type_node,
- endlink));
- double_ftype_cdouble
- = build_function_type (double_type_node,
- tree_cons (NULL_TREE, complex_double_type_node,
- endlink));
- ldouble_ftype_cldouble
- = build_function_type (long_double_type_node,
- tree_cons (NULL_TREE, complex_long_double_type_node,
- endlink));
-
- int_ftype_int
- = build_function_type (integer_type_node, int_endlink);
-
- long_ftype_long
- = build_function_type (long_integer_type_node,
- tree_cons (NULL_TREE, long_integer_type_node,
- endlink));
-
- longlong_ftype_longlong
- = build_function_type (long_long_integer_type_node,
- tree_cons (NULL_TREE, long_long_integer_type_node,
- endlink));
-
- intmax_ftype_intmax
- = build_function_type (intmax_type_node,
- tree_cons (NULL_TREE, intmax_type_node,
- endlink));
-
- int_ftype_cptr_cptr_sizet
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, const_ptr_type_node,
- tree_cons (NULL_TREE,
- const_ptr_type_node,
- sizetype_endlink)));
-
- void_zero_node = build_int_2 (0, 0);
- TREE_TYPE (void_zero_node) = void_type_node;
-
- /* Prototype for strcpy/strcat. */
- string_ftype_string_cstring
- = build_function_type (string_type_node,
- tree_cons (NULL_TREE, string_type_node,
- cstring_endlink));
-
- /* Prototype for strncpy/strncat. */
- string_ftype_string_cstring_sizet
- = build_function_type (string_type_node,
- tree_cons (NULL_TREE, string_type_node,
- tree_cons (NULL_TREE,
- const_string_type_node,
- sizetype_endlink)));
-
traditional_len_type_node = ((flag_traditional &&
c_language != clk_cplusplus)
? integer_type_node : sizetype);
- traditional_len_endlink = tree_cons (NULL_TREE, traditional_len_type_node,
- endlink);
-
- /* Prototype for strcmp. */
- int_ftype_cstring_cstring
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, const_string_type_node,
- cstring_endlink));
-
- /* Prototype for strspn/strcspn. */
- sizet_ftype_cstring_cstring
- = build_function_type (c_size_type_node,
- tree_cons (NULL_TREE, const_string_type_node,
- cstring_endlink));
-
- /* Prototype for strncmp. */
- int_ftype_cstring_cstring_sizet
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, const_string_type_node,
- tree_cons (NULL_TREE,
- const_string_type_node,
- sizetype_endlink)));
-
- /* Prototype for strstr, strpbrk, etc. */
- string_ftype_cstring_cstring
- = build_function_type (string_type_node,
- tree_cons (NULL_TREE, const_string_type_node,
- cstring_endlink));
-
- /* Prototype for strchr. */
- string_ftype_cstring_int
- = build_function_type (string_type_node,
- tree_cons (NULL_TREE, const_string_type_node,
- int_endlink));
-
- /* Prototype for strlen. */
- strlen_ftype
- = build_function_type (traditional_len_type_node, cstring_endlink);
- traditional_ptr_type_node = ((flag_traditional &&
- c_language != clk_cplusplus)
- ? string_type_node : ptr_type_node);
- traditional_cptr_type_node = ((flag_traditional &&
- c_language != clk_cplusplus)
- ? const_string_type_node : const_ptr_type_node);
-
- /* Prototype for memcpy. */
- memcpy_ftype
- = build_function_type (traditional_ptr_type_node,
- tree_cons (NULL_TREE, ptr_type_node,
- tree_cons (NULL_TREE, const_ptr_type_node,
- sizetype_endlink)));
-
- /* Prototype for memset. */
- memset_ftype
- = build_function_type (traditional_ptr_type_node,
- tree_cons (NULL_TREE, ptr_type_node,
- tree_cons (NULL_TREE, integer_type_node,
- sizetype_endlink)));
-
- /* Prototype for bzero. */
- bzero_ftype
- = build_function_type (void_type_node,
- tree_cons (NULL_TREE, traditional_ptr_type_node,
- traditional_len_endlink));
-
- /* Prototype for bcmp. */
- bcmp_ftype
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, traditional_cptr_type_node,
- tree_cons (NULL_TREE,
- traditional_cptr_type_node,
- traditional_len_endlink)));
-
- /* Prototype for puts. */
- puts_ftype
- = build_function_type (integer_type_node, cstring_endlink);
-
- /* Prototype for printf. */
- printf_ftype
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, const_string_type_node,
+#define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
+ builtin_types[(int) ENUM] = VALUE;
+#define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
+ builtin_types[(int) ENUM] \
+ = build_function_type (builtin_types[(int) RETURN], \
+ void_list_node);
+#define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
+ builtin_types[(int) ENUM] \
+ = build_function_type (builtin_types[(int) RETURN], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG1], \
+ void_list_node));
+#define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
+ builtin_types[(int) ENUM] \
+ = build_function_type \
+ (builtin_types[(int) RETURN], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG1], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG2], \
+ void_list_node)));
+#define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
+ builtin_types[(int) ENUM] \
+ = build_function_type \
+ (builtin_types[(int) RETURN], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG1], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG2], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG3], \
+ void_list_node))));
+#define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
+ builtin_types[(int) ENUM] \
+ = build_function_type \
+ (builtin_types[(int) RETURN], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG1], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG2], \
+ tree_cons \
+ (NULL_TREE, \
+ builtin_types[(int) ARG3], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG4], \
+ void_list_node)))));
+#define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
+ builtin_types[(int) ENUM] \
+ = build_function_type (builtin_types[(int) RETURN], NULL_TREE);
+#define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
+ builtin_types[(int) ENUM] \
+ = build_function_type (builtin_types[(int) RETURN], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG1], \
NULL_TREE));
- /* These stdio prototypes are declared using void* in place of
- FILE*. They are only used for __builtin_ style calls, regular
- style builtin prototypes omit the arguments and merge those
- provided by stdio.h. */
- /* Prototype for fwrite. */
- fwrite_ftype
- = build_function_type (c_size_type_node,
- tree_cons (NULL_TREE, const_ptr_type_node,
- tree_cons (NULL_TREE, c_size_type_node,
- tree_cons (NULL_TREE, c_size_type_node,
- tree_cons (NULL_TREE, ptr_type_node, endlink)))));
-
- /* Prototype for fputc. */
- fputc_ftype
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, integer_type_node,
- tree_cons (NULL_TREE, ptr_type_node, endlink)));
-
- /* Prototype for fputs. */
- fputs_ftype
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, const_string_type_node,
- tree_cons (NULL_TREE, ptr_type_node, endlink)));
-
- /* Prototype for fprintf. */
- fprintf_ftype
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, ptr_type_node,
- tree_cons (NULL_TREE,
- const_string_type_node,
- NULL_TREE)));
-
- builtin_function ("__builtin_constant_p", default_function_type,
- BUILT_IN_CONSTANT_P, BUILT_IN_NORMAL, NULL_PTR);
-
- builtin_function ("__builtin_return_address", ptr_ftype_unsigned,
- BUILT_IN_RETURN_ADDRESS, BUILT_IN_NORMAL, NULL_PTR);
-
- builtin_function ("__builtin_frame_address", ptr_ftype_unsigned,
- BUILT_IN_FRAME_ADDRESS, BUILT_IN_NORMAL, NULL_PTR);
-
- builtin_function ("__builtin_alloca", ptr_ftype_sizetype,
- BUILT_IN_ALLOCA, BUILT_IN_NORMAL, "alloca");
- builtin_function_2 ("__builtin_ffs", "ffs",
- int_ftype_int, int_ftype_int,
- BUILT_IN_FFS, BUILT_IN_NORMAL, 0, 1, 0);
- /* Define alloca as builtin, unless SMALL_STACK. */
-#ifndef SMALL_STACK
- builtin_function_2 (NULL_PTR, "alloca", NULL_TREE, ptr_ftype_sizetype,
- BUILT_IN_ALLOCA, BUILT_IN_NORMAL, 0, 1, 0);
-#endif
+#define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
+ builtin_types[(int) ENUM] \
+ = build_function_type \
+ (builtin_types[(int) RETURN], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG1], \
+ tree_cons (NULL_TREE, \
+ builtin_types[(int) ARG2], \
+ NULL_TREE)));
+#define DEF_POINTER_TYPE(ENUM, TYPE) \
+ builtin_types[(int) ENUM] \
+ = build_pointer_type (builtin_types[(int) TYPE]);
+#include "builtin-types.def"
+#undef DEF_PRIMITIVE_TYPE
+#undef DEF_FUNCTION_TYPE_1
+#undef DEF_FUNCTION_TYPE_2
+#undef DEF_FUNCTION_TYPE_3
+#undef DEF_FUNCTION_TYPE_4
+#undef DEF_FUNCTION_TYPE_VAR_0
+#undef DEF_FUNCTION_TYPE_VAR_1
+#undef DEF_POINTER_TYPE
+
+#define DEF_BUILTIN(ENUM, NAME, CLASS, \
+ TYPE, LIBTYPE, BOTH_P, FALLBACK_P, NONANSI_P) \
+ if (NAME) \
+ { \
+ tree decl; \
+ \
+ if (strncmp (NAME, "__builtin_", strlen ("__builtin_")) != 0) \
+ abort (); \
+ \
+ if (!BOTH_P) \
+ decl = builtin_function (NAME, builtin_types[TYPE], ENUM, \
+ CLASS, \
+ (FALLBACK_P \
+ ? (NAME + strlen ("__builtin_")) \
+ : NULL)); \
+ else \
+ decl = builtin_function_2 (NAME, \
+ NAME + strlen ("__builtin_"), \
+ builtin_types[TYPE], \
+ builtin_types[LIBTYPE], \
+ ENUM, \
+ CLASS, \
+ FALLBACK_P, \
+ NONANSI_P, \
+ /*noreturn_p=*/0); \
+ \
+ built_in_decls[(int) ENUM] = decl; \
+ }
+#include "builtins.def"
+#undef DEF_BUILTIN
+
/* Declare _exit and _Exit just to mark them as non-returning. */
- builtin_function_2 (NULL_PTR, "_exit", NULL_TREE, void_ftype_int,
+ builtin_function_2 (NULL, "_exit", NULL_TREE,
+ builtin_types[BT_FN_VOID_INT],
0, NOT_BUILT_IN, 0, 1, 1);
- builtin_function_2 (NULL_PTR, "_Exit", NULL_TREE, void_ftype_int,
+ builtin_function_2 (NULL, "_Exit", NULL_TREE,
+ builtin_types[BT_FN_VOID_INT],
0, NOT_BUILT_IN, 0, !flag_isoc99, 1);
- builtin_function_2 ("__builtin_index", "index",
- string_ftype_cstring_int, string_ftype_cstring_int,
- BUILT_IN_INDEX, BUILT_IN_NORMAL, 1, 1, 0);
- builtin_function_2 ("__builtin_rindex", "rindex",
- string_ftype_cstring_int, string_ftype_cstring_int,
- BUILT_IN_RINDEX, BUILT_IN_NORMAL, 1, 1, 0);
-
- /* The system prototypes for these functions have many
- variations, so don't specify parameters to avoid conflicts.
- The expand_* functions check the argument types anyway. */
- builtin_function_2 ("__builtin_bzero", "bzero",
- bzero_ftype, void_ftype_any,
- BUILT_IN_BZERO, BUILT_IN_NORMAL, 1, 1, 0);
- builtin_function_2 ("__builtin_bcmp", "bcmp",
- bcmp_ftype, int_ftype_any,
- BUILT_IN_BCMP, BUILT_IN_NORMAL, 1, 1, 0);
-
- builtin_function_2 ("__builtin_abs", "abs",
- int_ftype_int, int_ftype_int,
- BUILT_IN_ABS, BUILT_IN_NORMAL, 0, 0, 0);
- builtin_function_2 ("__builtin_fabsf", "fabsf",
- float_ftype_float, float_ftype_float,
- BUILT_IN_FABS, BUILT_IN_NORMAL, 0, 0, 0);
- builtin_function_2 ("__builtin_fabs", "fabs",
- double_ftype_double, double_ftype_double,
- BUILT_IN_FABS, BUILT_IN_NORMAL, 0, 0, 0);
- builtin_function_2 ("__builtin_fabsl", "fabsl",
- ldouble_ftype_ldouble, ldouble_ftype_ldouble,
- BUILT_IN_FABS, BUILT_IN_NORMAL, 0, 0, 0);
- builtin_function_2 ("__builtin_labs", "labs",
- long_ftype_long, long_ftype_long,
- BUILT_IN_ABS, BUILT_IN_NORMAL, 0, 0, 0);
- builtin_function_2 ("__builtin_llabs", "llabs",
- longlong_ftype_longlong, longlong_ftype_longlong,
- BUILT_IN_ABS, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
- builtin_function_2 ("__builtin_imaxabs", "imaxabs",
- intmax_ftype_intmax, intmax_ftype_intmax,
- BUILT_IN_ABS, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
-
- builtin_function ("__builtin_saveregs", ptr_ftype, BUILT_IN_SAVEREGS,
- BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_classify_type", default_function_type,
- BUILT_IN_CLASSIFY_TYPE, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_next_arg", ptr_ftype, BUILT_IN_NEXT_ARG,
- BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_args_info", int_ftype_int, BUILT_IN_ARGS_INFO,
- BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_setjmp",
- build_function_type (integer_type_node,
- tree_cons (NULL_TREE, ptr_type_node,
- endlink)),
- BUILT_IN_SETJMP, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_longjmp",
- build_function_type (void_type_node,
- tree_cons (NULL_TREE, ptr_type_node,
- int_endlink)),
- BUILT_IN_LONGJMP, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_trap", void_ftype, BUILT_IN_TRAP,
- BUILT_IN_NORMAL, NULL_PTR);
-
- /* ISO C99 IEEE Unordered compares. */
- builtin_function ("__builtin_isgreater", default_function_type,
- BUILT_IN_ISGREATER, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_isgreaterequal", default_function_type,
- BUILT_IN_ISGREATEREQUAL, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_isless", default_function_type,
- BUILT_IN_ISLESS, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_islessequal", default_function_type,
- BUILT_IN_ISLESSEQUAL, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_islessgreater", default_function_type,
- BUILT_IN_ISLESSGREATER, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_isunordered", default_function_type,
- BUILT_IN_ISUNORDERED, BUILT_IN_NORMAL, NULL_PTR);
-
- /* Untyped call and return. */
- builtin_function ("__builtin_apply_args", ptr_ftype,
- BUILT_IN_APPLY_ARGS, BUILT_IN_NORMAL, NULL_PTR);
-
- temp = tree_cons (NULL_TREE,
- build_pointer_type (build_function_type (void_type_node,
- NULL_TREE)),
- tree_cons (NULL_TREE, ptr_type_node, sizetype_endlink));
- builtin_function ("__builtin_apply",
- build_function_type (ptr_type_node, temp),
- BUILT_IN_APPLY, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_return", void_ftype_ptr,
- BUILT_IN_RETURN, BUILT_IN_NORMAL, NULL_PTR);
-
- /* Support for varargs.h and stdarg.h. */
- builtin_function ("__builtin_varargs_start",
- build_function_type (void_type_node,
- tree_cons (NULL_TREE,
- va_list_ref_type_node,
- endlink)),
- BUILT_IN_VARARGS_START, BUILT_IN_NORMAL, NULL_PTR);
-
- builtin_function ("__builtin_stdarg_start",
- build_function_type (void_type_node,
- tree_cons (NULL_TREE,
- va_list_ref_type_node,
- NULL_TREE)),
- BUILT_IN_STDARG_START, BUILT_IN_NORMAL, NULL_PTR);
-
- builtin_function ("__builtin_va_end",
- build_function_type (void_type_node,
- tree_cons (NULL_TREE,
- va_list_ref_type_node,
- endlink)),
- BUILT_IN_VA_END, BUILT_IN_NORMAL, NULL_PTR);
-
- builtin_function ("__builtin_va_copy",
- build_function_type (void_type_node,
- tree_cons (NULL_TREE,
- va_list_ref_type_node,
- tree_cons (NULL_TREE,
- va_list_arg_type_node,
- endlink))),
- BUILT_IN_VA_COPY, BUILT_IN_NORMAL, NULL_PTR);
-
- /* ??? Ought to be `T __builtin_expect(T, T)' for any type T. */
- builtin_function ("__builtin_expect",
- build_function_type (long_integer_type_node,
- tree_cons (NULL_TREE,
- long_integer_type_node,
- tree_cons (NULL_TREE,
- long_integer_type_node,
- endlink))),
- BUILT_IN_EXPECT, BUILT_IN_NORMAL, NULL_PTR);
-
- /* Currently under experimentation. */
- builtin_function_2 ("__builtin_memcpy", "memcpy",
- memcpy_ftype, memcpy_ftype,
- BUILT_IN_MEMCPY, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_memcmp", "memcmp",
- int_ftype_cptr_cptr_sizet, int_ftype_cptr_cptr_sizet,
- BUILT_IN_MEMCMP, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_memset", "memset",
- memset_ftype, memset_ftype,
- BUILT_IN_MEMSET, BUILT_IN_NORMAL, 1, 0, 0);
- built_in_decls[BUILT_IN_STRCMP] =
- builtin_function_2 ("__builtin_strcmp", "strcmp",
- int_ftype_cstring_cstring, int_ftype_cstring_cstring,
- BUILT_IN_STRCMP, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_strncmp", "strncmp",
- int_ftype_cstring_cstring_sizet,
- int_ftype_cstring_cstring_sizet,
- BUILT_IN_STRNCMP, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_strstr", "strstr",
- string_ftype_cstring_cstring, string_ftype_cstring_cstring,
- BUILT_IN_STRSTR, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_strpbrk", "strpbrk",
- string_ftype_cstring_cstring, string_ftype_cstring_cstring,
- BUILT_IN_STRPBRK, BUILT_IN_NORMAL, 1, 0, 0);
- built_in_decls[BUILT_IN_STRCHR] =
- builtin_function_2 ("__builtin_strchr", "strchr",
- string_ftype_cstring_int, string_ftype_cstring_int,
- BUILT_IN_STRCHR, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_strrchr", "strrchr",
- string_ftype_cstring_int, string_ftype_cstring_int,
- BUILT_IN_STRRCHR, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_strcpy", "strcpy",
- string_ftype_string_cstring, string_ftype_string_cstring,
- BUILT_IN_STRCPY, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_strncpy", "strncpy",
- string_ftype_string_cstring_sizet,
- string_ftype_string_cstring_sizet,
- BUILT_IN_STRNCPY, BUILT_IN_NORMAL, 1, 0, 0);
- built_in_decls[BUILT_IN_STRCAT] =
- builtin_function_2 ("__builtin_strcat", "strcat",
- string_ftype_string_cstring,
- string_ftype_string_cstring,
- BUILT_IN_STRCAT, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_strncat", "strncat",
- string_ftype_string_cstring_sizet,
- string_ftype_string_cstring_sizet,
- BUILT_IN_STRNCAT, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_strspn", "strspn",
- sizet_ftype_cstring_cstring, sizet_ftype_cstring_cstring,
- BUILT_IN_STRSPN, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_strcspn", "strcspn",
- sizet_ftype_cstring_cstring, sizet_ftype_cstring_cstring,
- BUILT_IN_STRCSPN, BUILT_IN_NORMAL, 1, 0, 0);
- built_in_decls[BUILT_IN_STRLEN] =
- builtin_function_2 ("__builtin_strlen", "strlen",
- strlen_ftype, strlen_ftype,
- BUILT_IN_STRLEN, BUILT_IN_NORMAL, 1, 0, 0);
-
- builtin_function_2 ("__builtin_sqrtf", "sqrtf",
- float_ftype_float, float_ftype_float,
- BUILT_IN_FSQRT, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_fsqrt", "sqrt",
- double_ftype_double, double_ftype_double,
- BUILT_IN_FSQRT, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_sqrtl", "sqrtl",
- ldouble_ftype_ldouble, ldouble_ftype_ldouble,
- BUILT_IN_FSQRT, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_sinf", "sinf",
- float_ftype_float, float_ftype_float,
- BUILT_IN_SIN, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_sin", "sin",
- double_ftype_double, double_ftype_double,
- BUILT_IN_SIN, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_sinl", "sinl",
- ldouble_ftype_ldouble, ldouble_ftype_ldouble,
- BUILT_IN_SIN, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_cosf", "cosf",
- float_ftype_float, float_ftype_float,
- BUILT_IN_COS, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_cos", "cos",
- double_ftype_double, double_ftype_double,
- BUILT_IN_COS, BUILT_IN_NORMAL, 1, 0, 0);
- builtin_function_2 ("__builtin_cosl", "cosl",
- ldouble_ftype_ldouble, ldouble_ftype_ldouble,
- BUILT_IN_COS, BUILT_IN_NORMAL, 1, 0, 0);
-
- /* ISO C99 complex arithmetic functions. */
- builtin_function_2 ("__builtin_conjf", "conjf",
- cfloat_ftype_cfloat, cfloat_ftype_cfloat,
- BUILT_IN_CONJ, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
- builtin_function_2 ("__builtin_conj", "conj",
- cdouble_ftype_cdouble, cdouble_ftype_cdouble,
- BUILT_IN_CONJ, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
- builtin_function_2 ("__builtin_conjl", "conjl",
- cldouble_ftype_cldouble, cldouble_ftype_cldouble,
- BUILT_IN_CONJ, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
- builtin_function_2 ("__builtin_crealf", "crealf",
- float_ftype_cfloat, float_ftype_cfloat,
- BUILT_IN_CREAL, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
- builtin_function_2 ("__builtin_creal", "creal",
- double_ftype_cdouble, double_ftype_cdouble,
- BUILT_IN_CREAL, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
- builtin_function_2 ("__builtin_creall", "creall",
- ldouble_ftype_cldouble, ldouble_ftype_cldouble,
- BUILT_IN_CREAL, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
- builtin_function_2 ("__builtin_cimagf", "cimagf",
- float_ftype_cfloat, float_ftype_cfloat,
- BUILT_IN_CIMAG, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
- builtin_function_2 ("__builtin_cimag", "cimag",
- double_ftype_cdouble, double_ftype_cdouble,
- BUILT_IN_CIMAG, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
- builtin_function_2 ("__builtin_cimagl", "cimagl",
- ldouble_ftype_cldouble, ldouble_ftype_cldouble,
- BUILT_IN_CIMAG, BUILT_IN_NORMAL, 0, !flag_isoc99, 0);
-
- built_in_decls[BUILT_IN_PUTCHAR] =
- builtin_function ("__builtin_putchar", int_ftype_int,
- BUILT_IN_PUTCHAR, BUILT_IN_NORMAL, "putchar");
- built_in_decls[BUILT_IN_PUTS] =
- builtin_function ("__builtin_puts", puts_ftype,
- BUILT_IN_PUTS, BUILT_IN_NORMAL, "puts");
- builtin_function_2 ("__builtin_printf", "printf",
- printf_ftype, printf_ftype,
- BUILT_IN_PRINTF, BUILT_IN_FRONTEND, 1, 0, 0);
- builtin_function_2 ("__builtin_fprintf", "fprintf",
- fprintf_ftype, fprintf_ftype,
- BUILT_IN_FPRINTF, BUILT_IN_FRONTEND, 1, 0, 0);
- built_in_decls[BUILT_IN_FWRITE] =
- builtin_function ("__builtin_fwrite", fwrite_ftype,
- BUILT_IN_FWRITE, BUILT_IN_NORMAL, "fwrite");
- built_in_decls[BUILT_IN_FPUTC] =
- builtin_function ("__builtin_fputc", fputc_ftype,
- BUILT_IN_FPUTC, BUILT_IN_NORMAL, "fputc");
- /* Declare the __builtin_ style with arguments and the regular style
- without them. We rely on stdio.h to supply the arguments for the
- regular style declaration since we had to use void* instead of
- FILE* in the __builtin_ prototype supplied here. */
- built_in_decls[BUILT_IN_FPUTS] =
- builtin_function_2 ("__builtin_fputs", "fputs",
- fputs_ftype, int_ftype_any,
- BUILT_IN_FPUTS, BUILT_IN_NORMAL, 1, 0, 0);
-
/* Declare these functions non-returning
to avoid spurious "control drops through" warnings. */
- builtin_function_2 (NULL_PTR, "abort",
+ builtin_function_2 (NULL, "abort",
NULL_TREE, ((c_language == clk_cplusplus)
- ? void_ftype : void_ftype_any),
+ ? builtin_types[BT_FN_VOID]
+ : builtin_types[BT_FN_VOID_VAR]),
0, NOT_BUILT_IN, 0, 0, 1);
- builtin_function_2 (NULL_PTR, "exit",
+ builtin_function_2 (NULL, "exit",
NULL_TREE, ((c_language == clk_cplusplus)
- ? void_ftype_int : void_ftype_any),
+ ? builtin_types[BT_FN_VOID_INT]
+ : builtin_types[BT_FN_VOID_VAR]),
0, NOT_BUILT_IN, 0, 0, 1);
-#if 0
- /* Support for these has not been written in either expand_builtin
- or build_function_call. */
- builtin_function ("__builtin_div", default_ftype, BUILT_IN_DIV,
- BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_ldiv", default_ftype, BUILT_IN_LDIV,
- BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_ffloor", double_ftype_double, BUILT_IN_FFLOOR,
- BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_fceil", double_ftype_double, BUILT_IN_FCEIL,
- BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_fmod", double_ftype_double_double,
- BUILT_IN_FMOD, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_frem", double_ftype_double_double,
- BUILT_IN_FREM, BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_getexp", double_ftype_double, BUILT_IN_GETEXP,
- BUILT_IN_NORMAL, NULL_PTR);
- builtin_function ("__builtin_getman", double_ftype_double, BUILT_IN_GETMAN,
- BUILT_IN_NORMAL, NULL_PTR);
-#endif
-
main_identifier_node = get_identifier ("main");
/* ??? Perhaps there's a better place to do this. But it is related
}
+/* Linked list of disabled built-in functions. */
+
+typedef struct disabled_builtin
+{
+ const char *name;
+ struct disabled_builtin *next;
+} disabled_builtin;
+static disabled_builtin *disabled_builtins = NULL;
+
+static bool builtin_function_disabled_p PARAMS ((const char *));
+
+/* Disable a built-in function specified by -fno-builtin-NAME. If NAME
+ begins with "__builtin_", give an error. */
+
+void
+disable_builtin_function (name)
+ const char *name;
+{
+ if (strncmp (name, "__builtin_", strlen ("__builtin_")) == 0)
+ error ("cannot disable built-in function `%s'", name);
+ else
+ {
+ disabled_builtin *new = xmalloc (sizeof (disabled_builtin));
+ new->name = name;
+ new->next = disabled_builtins;
+ disabled_builtins = new;
+ }
+}
+
+
+/* Return true if the built-in function NAME has been disabled, false
+ otherwise. */
+
+static bool
+builtin_function_disabled_p (name)
+ const char *name;
+{
+ disabled_builtin *p;
+ for (p = disabled_builtins; p != NULL; p = p->next)
+ {
+ if (strcmp (name, p->name) == 0)
+ return true;
+ }
+ return false;
+}
+
+
/* Possibly define a builtin function with one or two names. BUILTIN_NAME
is an __builtin_-prefixed name; NAME is the ordinary name; one or both
of these may be NULL (though both being NULL is useless).
if (builtin_name != 0)
{
bdecl = builtin_function (builtin_name, builtin_type, function_code,
- class, library_name_p ? name : NULL_PTR);
+ class, library_name_p ? name : NULL);
if (noreturn_p)
{
TREE_THIS_VOLATILE (bdecl) = 1;
TREE_SIDE_EFFECTS (bdecl) = 1;
}
}
- if (name != 0 && !flag_no_builtin && !(nonansi_p && flag_no_nonansi_builtin))
+ if (name != 0 && !flag_no_builtin && !builtin_function_disabled_p (name)
+ && !(nonansi_p && flag_no_nonansi_builtin))
{
- decl = builtin_function (name, type, function_code, class, NULL_PTR);
+ decl = builtin_function (name, type, function_code, class, NULL);
if (nonansi_p)
DECL_BUILT_IN_NONANSI (decl) = 1;
if (noreturn_p)
return (bdecl != 0 ? bdecl : decl);
}
\f
+/* Nonzero if the type T promotes to int. This is (nearly) the
+ integral promotions defined in ISO C99 6.3.1.1/2. */
+
+bool
+c_promoting_integer_type_p (t)
+ tree t;
+{
+ switch (TREE_CODE (t))
+ {
+ case INTEGER_TYPE:
+ return (TYPE_MAIN_VARIANT (t) == char_type_node
+ || TYPE_MAIN_VARIANT (t) == signed_char_type_node
+ || TYPE_MAIN_VARIANT (t) == unsigned_char_type_node
+ || TYPE_MAIN_VARIANT (t) == short_integer_type_node
+ || TYPE_MAIN_VARIANT (t) == short_unsigned_type_node
+ || TYPE_PRECISION (t) < TYPE_PRECISION (integer_type_node));
+
+ case ENUMERAL_TYPE:
+ /* ??? Technically all enumerations not larger than an int
+ promote to an int. But this is used along code paths
+ that only want to notice a size change. */
+ return TYPE_PRECISION (t) < TYPE_PRECISION (integer_type_node);
+
+ case BOOLEAN_TYPE:
+ return 1;
+
+ default:
+ return 0;
+ }
+}
+
/* Given a type, apply default promotions wrt unnamed function arguments
and return the new type. Return NULL_TREE if no change. */
/* ??? There is a function of the same name in the C++ front end that
if (TYPE_MAIN_VARIANT (type) == float_type_node)
return double_type_node;
- if (C_PROMOTING_INTEGER_TYPE_P (type))
+ if (c_promoting_integer_type_p (type))
{
/* Traditionally, unsignedness is preserved in default promotions.
Also preserve unsignedness if not really getting any wider. */
self_promoting_args_p (parms)
tree parms;
{
- register tree t;
+ tree t;
for (t = parms; t; t = TREE_CHAIN (t))
{
- register tree type = TREE_VALUE (t);
+ tree type = TREE_VALUE (t);
if (TREE_CHAIN (t) == 0 && type != void_type_node)
return 0;
if (TYPE_MAIN_VARIANT (type) == float_type_node)
return 0;
- if (C_PROMOTING_INTEGER_TYPE_P (type))
+ if (c_promoting_integer_type_p (type))
return 0;
}
return 1;
switch (DECL_FUNCTION_CODE (function))
{
case BUILT_IN_ABS:
+ case BUILT_IN_LABS:
+ case BUILT_IN_LLABS:
+ case BUILT_IN_IMAXABS:
case BUILT_IN_FABS:
+ case BUILT_IN_FABSL:
+ case BUILT_IN_FABSF:
if (coerced_params == 0)
return integer_zero_node;
return build_unary_op (ABS_EXPR, TREE_VALUE (coerced_params), 0);
case BUILT_IN_CONJ:
+ case BUILT_IN_CONJF:
+ case BUILT_IN_CONJL:
if (coerced_params == 0)
return integer_zero_node;
return build_unary_op (CONJ_EXPR, TREE_VALUE (coerced_params), 0);
case BUILT_IN_CREAL:
+ case BUILT_IN_CREALF:
+ case BUILT_IN_CREALL:
if (coerced_params == 0)
return integer_zero_node;
return build_unary_op (REALPART_EXPR, TREE_VALUE (coerced_params), 0);
case BUILT_IN_CIMAG:
+ case BUILT_IN_CIMAGF:
+ case BUILT_IN_CIMAGL:
if (coerced_params == 0)
return integer_zero_node;
return build_unary_op (IMAGPART_EXPR, TREE_VALUE (coerced_params), 0);
}
}
-/* Walk the statemen tree, rooted at *tp. Apply FUNC to all the
+/* Walk the statement tree, rooted at *tp. Apply FUNC to all the
sub-trees of *TP in a pre-order traversal. FUNC is called with the
DATA and the address of each sub-tree. If FUNC returns a non-NULL
value, the traversal is aborted, and the value returned by FUNC is
if (result)
return result;
- /* Even if we didn't, FUNC may have decided that there was nothing
- interesting below this point in the tree. */
- if (!walk_subtrees)
- return NULL_TREE;
-
/* FUNC may have modified the tree, recheck that we're looking at a
statement node. */
code = TREE_CODE (*tp);
if (!statement_code_p (code))
return NULL_TREE;
- /* Walk over all the sub-trees of this operand. Statement nodes never
- contain RTL, and we needn't worry about TARGET_EXPRs. */
- len = TREE_CODE_LENGTH (code);
+ /* Visit the subtrees unless FUNC decided that there was nothing
+ interesting below this point in the tree. */
+ if (walk_subtrees)
+ {
+ /* Walk over all the sub-trees of this operand. Statement nodes
+ never contain RTL, and we needn't worry about TARGET_EXPRs. */
+ len = TREE_CODE_LENGTH (code);
- /* Go through the subtrees. We need to do this in forward order so
- that the scope of a FOR_EXPR is handled properly. */
- for (i = 0; i < len; ++i)
- WALK_SUBTREE (TREE_OPERAND (*tp, i));
+ /* Go through the subtrees. We need to do this in forward order so
+ that the scope of a FOR_EXPR is handled properly. */
+ for (i = 0; i < len; ++i)
+ WALK_SUBTREE (TREE_OPERAND (*tp, i));
+ }
/* Finally visit the chain. This can be tail-recursion optimized if
we write it this way. */
return case_label;
}
+/* Finish an expression taking the address of LABEL. Returns an
+ expression for the address. */
+
+tree
+finish_label_address_expr (label)
+ tree label;
+{
+ tree result;
+
+ if (pedantic)
+ {
+ if (c_language == clk_cplusplus)
+ pedwarn ("ISO C++ forbids taking the address of a label");
+ else
+ pedwarn ("ISO C forbids taking the address of a label");
+ }
+
+ label = lookup_label (label);
+ if (label == NULL_TREE)
+ result = null_pointer_node;
+ else
+ {
+ TREE_USED (label) = 1;
+ result = build1 (ADDR_EXPR, ptr_type_node, label);
+ TREE_CONSTANT (result) = 1;
+ /* The current function in not necessarily uninlinable.
+ Computed gotos are incompatible with inlining, but the value
+ here could be used only in a diagnostic, for example. */
+ }
+
+ return result;
+}
+
/* Mark P (a stmt_tree) for GC. The use of a `void *' for the
parameter allows this function to be used as a GC-marking
function. */
void
c_mark_lang_decl (c)
- struct c_lang_decl *c;
+ struct c_lang_decl *c ATTRIBUTE_UNUSED;
{
- ggc_mark_tree (c->saved_tree);
}
/* Mark F for GC. */
}
break;
+ case COMPOUND_LITERAL_EXPR:
+ {
+ /* Initialize the anonymous variable declared in the compound
+ literal, then return the variable. */
+ tree decl = COMPOUND_LITERAL_EXPR_DECL (exp);
+ emit_local_var (decl);
+ return expand_expr (decl, target, tmode, modifier);
+ }
+
default:
abort ();
}
return -1;
}
-/* Tree code classes. */
+/* Hook used by staticp to handle language-specific tree codes. */
+
+int
+c_staticp (exp)
+ tree exp;
+{
+ if (TREE_CODE (exp) == COMPOUND_LITERAL_EXPR
+ && TREE_STATIC (COMPOUND_LITERAL_EXPR_DECL (exp)))
+ return 1;
+ return 0;
+}
+
+/* Tree code classes. */
#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
-static char c_tree_code_type[] = {
+static const char c_tree_code_type[] = {
'x',
#include "c-common.def"
};
#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
-static int c_tree_code_length[] = {
+static const int c_tree_code_length[] = {
0,
#include "c-common.def"
};
Used for printing out the tree and error messages. */
#define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
-static const char *c_tree_code_name[] = {
+static const char *const c_tree_code_name[] = {
"@@dummy",
#include "c-common.def"
};
#undef DEFTREECODE
/* Adds the tree codes specific to the C front end to the list of all
- tree codes. */
+ tree codes. */
void
add_c_tree_codes ()
{
case BUILT_IN_PRINTF:
target = c_expand_builtin_printf (arglist, target, tmode,
- modifier, ignore);
+ modifier, ignore,/*unlocked=*/ 0);
+ if (target)
+ return target;
+ break;
+
+ case BUILT_IN_PRINTF_UNLOCKED:
+ target = c_expand_builtin_printf (arglist, target, tmode,
+ modifier, ignore,/*unlocked=*/ 1);
if (target)
return target;
break;
case BUILT_IN_FPRINTF:
target = c_expand_builtin_fprintf (arglist, target, tmode,
- modifier, ignore);
+ modifier, ignore,/*unlocked=*/ 0);
+ if (target)
+ return target;
+ break;
+
+ case BUILT_IN_FPRINTF_UNLOCKED:
+ target = c_expand_builtin_fprintf (arglist, target, tmode,
+ modifier, ignore,/*unlocked=*/ 1);
if (target)
return target;
break;
/* Check an arglist to *printf for problems. The arglist should start
at the format specifier, with the remaining arguments immediately
- following it. */
+ following it. */
static int
is_valid_printf_arglist (arglist)
tree arglist;
{
- /* Save this value so we can restore it later. */
+ /* Save this value so we can restore it later. */
const int SAVE_pedantic = pedantic;
int diagnostic_occurred = 0;
+ tree attrs;
/* Set this to a known value so the user setting won't affect code
generation. */
pedantic = 1;
- /* Check to make sure there are no format specifier errors. */
- check_function_format (&diagnostic_occurred,
- maybe_get_identifier("printf"),
- NULL_TREE, arglist);
-
- /* Restore the value of `pedantic'. */
+ /* Check to make sure there are no format specifier errors. */
+ attrs = tree_cons (get_identifier ("format"),
+ tree_cons (NULL_TREE,
+ get_identifier ("printf"),
+ tree_cons (NULL_TREE,
+ integer_one_node,
+ tree_cons (NULL_TREE,
+ build_int_2 (2, 0),
+ NULL_TREE))),
+ NULL_TREE);
+ check_function_format (&diagnostic_occurred, attrs, arglist);
+
+ /* Restore the value of `pedantic'. */
pedantic = SAVE_pedantic;
/* If calling `check_function_format_ptr' produces a warning, we
- return false, otherwise we return true. */
+ return false, otherwise we return true. */
return ! diagnostic_occurred;
}
/* If the arguments passed to printf are suitable for optimizations,
- we attempt to transform the call. */
+ we attempt to transform the call. */
static rtx
-c_expand_builtin_printf (arglist, target, tmode, modifier, ignore)
+c_expand_builtin_printf (arglist, target, tmode, modifier, ignore, unlocked)
tree arglist;
rtx target;
enum machine_mode tmode;
enum expand_modifier modifier;
int ignore;
+ int unlocked;
{
- tree fn_putchar = built_in_decls[BUILT_IN_PUTCHAR],
- fn_puts = built_in_decls[BUILT_IN_PUTS];
+ tree fn_putchar = unlocked ?
+ built_in_decls[BUILT_IN_PUTCHAR_UNLOCKED] : built_in_decls[BUILT_IN_PUTCHAR];
+ tree fn_puts = unlocked ?
+ built_in_decls[BUILT_IN_PUTS_UNLOCKED] : built_in_decls[BUILT_IN_PUTS];
tree fn, format_arg, stripped_string;
/* If the return value is used, or the replacement _DECL isn't
- initialized, don't do the transformation. */
+ initialized, don't do the transformation. */
if (!ignore || !fn_putchar || !fn_puts)
return 0;
- /* Verify the required arguments in the original call. */
+ /* Verify the required arguments in the original call. */
if (arglist == 0
|| (TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != POINTER_TYPE))
return 0;
- /* Check the specifier vs. the parameters. */
+ /* Check the specifier vs. the parameters. */
if (!is_valid_printf_arglist (arglist))
return 0;
/* OK! We can attempt optimization. */
- /* If the format specifier was "%s\n", call __builtin_puts(arg2). */
+ /* If the format specifier was "%s\n", call __builtin_puts(arg2). */
if (strcmp (TREE_STRING_POINTER (stripped_string), "%s\n") == 0)
{
arglist = TREE_CHAIN (arglist);
fn = fn_puts;
}
- /* If the format specifier was "%c", call __builtin_putchar (arg2). */
+ /* If the format specifier was "%c", call __builtin_putchar (arg2). */
else if (strcmp (TREE_STRING_POINTER (stripped_string), "%c") == 0)
{
arglist = TREE_CHAIN (arglist);
}
else
{
- /* We can't handle anything else with % args or %% ... yet. */
+ /* We can't handle anything else with % args or %% ... yet. */
if (strchr (TREE_STRING_POINTER (stripped_string), '%'))
return 0;
{
/* Given printf("c"), (where c is any one character,)
convert "c"[0] to an int and pass that to the replacement
- function. */
+ function. */
arglist = build_int_2 (TREE_STRING_POINTER (stripped_string)[0], 0);
arglist = build_tree_list (NULL_TREE, arglist);
}
/* If the arguments passed to fprintf are suitable for optimizations,
- we attempt to transform the call. */
+ we attempt to transform the call. */
static rtx
-c_expand_builtin_fprintf (arglist, target, tmode, modifier, ignore)
+c_expand_builtin_fprintf (arglist, target, tmode, modifier, ignore, unlocked)
tree arglist;
rtx target;
enum machine_mode tmode;
enum expand_modifier modifier;
int ignore;
+ int unlocked;
{
- tree fn_fputc = built_in_decls[BUILT_IN_FPUTC],
- fn_fputs = built_in_decls[BUILT_IN_FPUTS];
+ tree fn_fputc = unlocked ?
+ built_in_decls[BUILT_IN_FPUTC_UNLOCKED] : built_in_decls[BUILT_IN_FPUTC];
+ tree fn_fputs = unlocked ?
+ built_in_decls[BUILT_IN_FPUTS_UNLOCKED] : built_in_decls[BUILT_IN_FPUTS];
tree fn, format_arg, stripped_string;
/* If the return value is used, or the replacement _DECL isn't
- initialized, don't do the transformation. */
+ initialized, don't do the transformation. */
if (!ignore || !fn_fputc || !fn_fputs)
return 0;
- /* Verify the required arguments in the original call. */
+ /* Verify the required arguments in the original call. */
if (arglist == 0
|| (TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != POINTER_TYPE)
|| (TREE_CHAIN (arglist) == 0)
POINTER_TYPE))
return 0;
- /* Check the specifier vs. the parameters. */
+ /* Check the specifier vs. the parameters. */
if (!is_valid_printf_arglist (TREE_CHAIN (arglist)))
return 0;
/* OK! We can attempt optimization. */
- /* If the format specifier was "%s", call __builtin_fputs(arg3, arg1). */
+ /* If the format specifier was "%s", call __builtin_fputs(arg3, arg1). */
if (strcmp (TREE_STRING_POINTER (stripped_string), "%s") == 0)
{
tree newarglist = build_tree_list (NULL_TREE, TREE_VALUE (arglist));
newarglist);
fn = fn_fputs;
}
- /* If the format specifier was "%c", call __builtin_fputc (arg3, arg1). */
+ /* If the format specifier was "%c", call __builtin_fputc (arg3, arg1). */
else if (strcmp (TREE_STRING_POINTER (stripped_string), "%c") == 0)
{
tree newarglist = build_tree_list (NULL_TREE, TREE_VALUE (arglist));
}
else
{
- /* We can't handle anything else with % args or %% ... yet. */
+ /* We can't handle anything else with % args or %% ... yet. */
if (strchr (TREE_STRING_POINTER (stripped_string), '%'))
return 0;
return val;
}
\f
+/* Handle C and C++ default attributes. */
+
+enum built_in_attribute
+{
+#define DEF_ATTR_NULL_TREE(ENUM) ENUM,
+#define DEF_ATTR_INT(ENUM, VALUE) ENUM,
+#define DEF_ATTR_IDENT(ENUM, STRING) ENUM,
+#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM,
+#define DEF_FN_ATTR(NAME, ATTRS, PREDICATE) /* No entry needed in enum. */
+#include "builtin-attrs.def"
+#undef DEF_ATTR_NULL_TREE
+#undef DEF_ATTR_INT
+#undef DEF_ATTR_IDENT
+#undef DEF_ATTR_TREE_LIST
+#undef DEF_FN_ATTR
+ ATTR_LAST
+};
+
+static tree built_in_attributes[(int) ATTR_LAST];
+
+static bool c_attrs_initialized = false;
+
+static void c_init_attributes PARAMS ((void));
-/* Do the parts of lang_init common to C and C++. */
+/* Common initialization before parsing options. */
void
-c_common_lang_init ()
+c_common_init_options (lang)
+ enum c_language_kind lang;
{
+ c_language = lang;
+ parse_in = cpp_create_reader (lang == clk_c ? CLK_GNUC89:
+ lang == clk_cplusplus ? CLK_GNUCXX: CLK_OBJC);
+
+ /* Mark as "unspecified" (see c_common_post_options). */
+ flag_bounds_check = -1;
+}
+
+/* Post-switch processing. */
+void
+c_common_post_options ()
+{
+ cpp_post_options (parse_in);
+
+ /* Use tree inlining if possible. Function instrumentation is only
+ done in the RTL level, so we disable tree inlining. */
+ if (! flag_instrument_function_entry_exit)
+ {
+ if (!flag_no_inline)
+ {
+ flag_inline_trees = 1;
+ flag_no_inline = 1;
+ }
+ if (flag_inline_functions)
+ {
+ flag_inline_trees = 2;
+ flag_inline_functions = 0;
+ }
+ }
+
/* If still "unspecified", make it match -fbounded-pointers. */
- if (flag_bounds_check < 0)
+ if (flag_bounds_check == -1)
flag_bounds_check = flag_bounded_pointers;
/* Special format checking options don't work without -Wformat; warn if
if (warn_missing_format_attribute && !warn_format)
warning ("-Wmissing-format-attribute ignored without -Wformat");
}
+
+/* Front end initialization common to C, ObjC and C++. */
+const char *
+c_common_init (filename)
+ const char *filename;
+{
+ /* Do this before initializing pragmas, as then cpplib's hash table
+ has been set up. */
+ filename = init_c_lex (filename);
+
+ init_pragma ();
+
+ if (!c_attrs_initialized)
+ c_init_attributes ();
+
+ return filename;
+}
+
+/* Common finish hook for the C, ObjC and C++ front ends. */
+void
+c_common_finish ()
+{
+ cpp_finish (parse_in);
+
+ /* For performance, avoid tearing down cpplib's internal structures.
+ Call cpp_errors () instead of cpp_destroy (). */
+ errorcount += cpp_errors (parse_in);
+}
+
+static void
+c_init_attributes ()
+{
+ /* Fill in the built_in_attributes array. */
+#define DEF_ATTR_NULL_TREE(ENUM) \
+ built_in_attributes[(int) ENUM] = NULL_TREE;
+#define DEF_ATTR_INT(ENUM, VALUE) \
+ built_in_attributes[(int) ENUM] = build_int_2 (VALUE, VALUE < 0 ? -1 : 0);
+#define DEF_ATTR_IDENT(ENUM, STRING) \
+ built_in_attributes[(int) ENUM] = get_identifier (STRING);
+#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) \
+ built_in_attributes[(int) ENUM] \
+ = tree_cons (built_in_attributes[(int) PURPOSE], \
+ built_in_attributes[(int) VALUE], \
+ built_in_attributes[(int) CHAIN]);
+#define DEF_FN_ATTR(NAME, ATTRS, PREDICATE) /* No initialization needed. */
+#include "builtin-attrs.def"
+#undef DEF_ATTR_NULL_TREE
+#undef DEF_ATTR_INT
+#undef DEF_ATTR_IDENT
+#undef DEF_ATTR_TREE_LIST
+#undef DEF_FN_ATTR
+ ggc_add_tree_root (built_in_attributes, (int) ATTR_LAST);
+ c_attrs_initialized = true;
+}
+
+/* Depending on the name of DECL, apply default attributes to it. */
+
+void
+c_common_insert_default_attributes (decl)
+ tree decl;
+{
+ tree name = DECL_NAME (decl);
+
+ if (!c_attrs_initialized)
+ c_init_attributes ();
+
+#define DEF_ATTR_NULL_TREE(ENUM) /* Nothing needed after initialization. */
+#define DEF_ATTR_INT(ENUM, VALUE)
+#define DEF_ATTR_IDENT(ENUM, STRING)
+#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN)
+#define DEF_FN_ATTR(NAME, ATTRS, PREDICATE) \
+ if ((PREDICATE) && name == built_in_attributes[(int) NAME]) \
+ decl_attributes (&decl, built_in_attributes[(int) ATTRS], \
+ ATTR_FLAG_BUILT_IN);
+#include "builtin-attrs.def"
+#undef DEF_ATTR_NULL_TREE
+#undef DEF_ATTR_INT
+#undef DEF_ATTR_IDENT
+#undef DEF_ATTR_TREE_LIST
+#undef DEF_FN_ATTR
+}
+
+/* Output a -Wshadow warning MSGID about NAME, an IDENTIFIER_NODE, and
+ additionally give the location of the previous declaration DECL. */
+void
+shadow_warning (msgid, name, decl)
+ const char *msgid;
+ tree name, decl;
+{
+ warning ("declaration of `%s' shadows %s", IDENTIFIER_POINTER (name), msgid);
+ warning_with_file_and_line (DECL_SOURCE_FILE (decl),
+ DECL_SOURCE_LINE (decl),
+ "shadowed declaration is here");
+}
+
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