#include "config.h"
#include "system.h"
#include "tree.h"
#include "flags.h"
#include "toplev.h"
#include "output.h"
#include "c-pragma.h"
#include "rtl.h"
#include "ggc.h"
#include "expr.h"
#include "c-common.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;
#include "genindex.h"
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE TYPE_PRECISION (wchar_type_node)
#ifndef SIZE_TYPE
#define SIZE_TYPE "long unsigned int"
#endif
#ifndef WCHAR_TYPE
#define WCHAR_TYPE "int"
#endif
#ifndef PTRDIFF_TYPE
#define PTRDIFF_TYPE "long int"
#endif
#ifndef WINT_TYPE
#define WINT_TYPE "unsigned int"
#endif
#ifndef INTMAX_TYPE
#define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
? "int" \
: ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
? "long int" \
: "long long int"))
#endif
#ifndef UINTMAX_TYPE
#define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
? "unsigned int" \
: ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
? "long unsigned int" \
: "long long unsigned int"))
#endif
enum c_language_kind c_language;
tree c_global_trees[CTI_MAX];
int flag_no_builtin;
int flag_no_nonansi_builtin;
int flag_short_double;
int flag_short_wchar;
int warn_sequence_point;
int warn_div_by_zero = 1;
tree *ridpointers;
tree (*make_fname_decl) PARAMS ((tree, int));
int (*lang_statement_code_p) PARAMS ((enum tree_code));
void (*lang_expand_function_end) PARAMS ((void));
int skip_evaluation;
int warn_long_double = 1;
static void create_cfstring_template PARAMS ((void));
struct fname_var_t
{
tree *const decl;
const unsigned rid;
const int pretty;
};
const struct fname_var_t fname_vars[] =
{
{&c99_function_name_decl_node, RID_C99_FUNCTION_NAME, 0},
{&function_name_decl_node, RID_FUNCTION_NAME, 0},
{&pretty_function_name_decl_node, RID_PRETTY_FUNCTION_NAME, 1},
{NULL, 0, 0},
};
static int constant_fits_type_p PARAMS ((tree, tree));
typedef struct
{
int compstmt_count;
int line;
const char *file;
int needs_warning;
tree if_stmt;
} if_elt;
static if_elt *if_stack;
static int if_stack_space = 0;
static int if_stack_pointer = 0;
void
c_expand_start_cond (cond, compstmt_count, if_stmt)
tree cond;
int compstmt_count;
tree if_stmt;
{
if (if_stack_space == 0)
{
if_stack_space = 10;
if_stack = (if_elt *) xmalloc (10 * sizeof (if_elt));
}
else if (if_stack_space == if_stack_pointer)
{
if_stack_space += 10;
if_stack = (if_elt *) xrealloc (if_stack, if_stack_space * sizeof (if_elt));
}
IF_COND (if_stmt) = cond;
add_stmt (if_stmt);
if_stack[if_stack_pointer].compstmt_count = compstmt_count;
if_stack[if_stack_pointer].file = input_filename;
if_stack[if_stack_pointer].line = lineno;
if_stack[if_stack_pointer].needs_warning = 0;
if_stack[if_stack_pointer].if_stmt = if_stmt;
if_stack_pointer++;
}
void
c_finish_then ()
{
tree if_stmt = if_stack[if_stack_pointer - 1].if_stmt;
RECHAIN_STMTS (if_stmt, THEN_CLAUSE (if_stmt));
}
void
c_expand_end_cond ()
{
if_stack_pointer--;
if (if_stack[if_stack_pointer].needs_warning)
warning_with_file_and_line (if_stack[if_stack_pointer].file,
if_stack[if_stack_pointer].line,
"suggest explicit braces to avoid ambiguous `else'");
last_expr_type = NULL_TREE;
}
void
c_expand_start_else ()
{
if (warn_parentheses
&& if_stack_pointer > 1
&& (if_stack[if_stack_pointer - 1].compstmt_count
== if_stack[if_stack_pointer - 2].compstmt_count))
if_stack[if_stack_pointer - 2].needs_warning = 1;
if_stack[if_stack_pointer - 1].needs_warning = 0;
if_stack[if_stack_pointer - 1].compstmt_count--;
}
void
c_finish_else ()
{
tree if_stmt = if_stack[if_stack_pointer - 1].if_stmt;
RECHAIN_STMTS (if_stmt, ELSE_CLAUSE (if_stmt));
}
tree
c_begin_if_stmt ()
{
tree r;
r = build_stmt (IF_STMT, NULL_TREE, NULL_TREE, NULL_TREE);
return r;
}
tree
c_begin_while_stmt ()
{
tree r;
r = build_stmt (WHILE_STMT, NULL_TREE, NULL_TREE);
return r;
}
void
c_finish_while_stmt_cond (cond, while_stmt)
tree while_stmt;
tree cond;
{
WHILE_COND (while_stmt) = cond;
}
void
start_fname_decls ()
{
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)
saved_function_name_decls = tree_cons (saved, NULL_TREE,
saved_function_name_decls);
}
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)
{
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;
}
for (ix = 0; fname_vars[ix].decl; ix++)
*fname_vars[ix].decl = NULL_TREE;
if (stack)
{
tree saved;
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;
}
tree
altivec_vec_step (type)
tree type;
{
enum tree_code code = TREE_CODE (type);
if (code != VECTOR_TYPE)
{
error ("operand of `vec_step' must be a vector type");
return ssize_int (0);
}
return size_binop (CEIL_DIV_EXPR, ssize_int (16),
convert (ssizetype, c_sizeof (TREE_TYPE (type))));
}
tree
altivec_vec_step_expr (expr)
tree expr;
{
return altivec_vec_step (TREE_TYPE (expr));
}
tree
altivec_vector_constant (type, values)
tree type;
tree values;
{
tree vtype, t1, t2, t3, t4;
tree valarray[16], valtail;
int valnum, elements;
vtype = TREE_TYPE (type);
elements = (TREE_INT_CST_LOW (TYPE_SIZE (type))
/ TREE_INT_CST_LOW (TYPE_SIZE (vtype)));
for (valtail = values, valnum = 0;
valtail;
valtail = TREE_CHAIN (valtail), valnum++)
{
register tree val = TREE_VALUE (valtail);
STRIP_NOPS (val);
if (TREE_CODE (val) != INTEGER_CST && TREE_CODE (val) != REAL_CST)
{
error("expected a constant expression");
return error_mark_node;
}
valarray[valnum] = convert_and_check (vtype, val);
}
if (valnum != 1 && valnum != elements)
{
error (valnum < elements
? "too few initializers" : "too many initializers");
return error_mark_node;
}
while (valnum < elements)
valarray[valnum++] = valarray[0];
while (elements > 4)
{
int i, j;
for (i = 2, j = 0; i <= elements; i += 2, j++)
{
unsigned HOST_WIDE_INT a = TREE_INT_CST_LOW (valarray[i-2]);
unsigned HOST_WIDE_INT b = TREE_INT_CST_LOW (valarray[i-1]);
int bits = 128 / elements;
valarray[j] = build_int_2 ((a << bits) | (b & ((1 << bits) - 1)),
0);
}
elements /= 2;
}
t4 = tree_cons (0, valarray[3], 0);
t3 = tree_cons (0, valarray[2], t4);
t2 = tree_cons (0, valarray[1], t3);
t1 = tree_cons (0, valarray[0], t2);
return build_vector (type, t1);
}
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;
}
const char *
fname_string (rid)
unsigned rid;
{
unsigned ix;
for (ix = 0; fname_vars[ix].decl; ix++)
if (fname_vars[ix].rid == rid)
break;
return fname_as_string (fname_vars[ix].pretty);
}
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;
int saved_lineno = lineno;
lineno = 0;
decl = (*make_fname_decl) (id, fname_vars[ix].pretty);
if (last_tree != saved_last_tree)
{
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;
lineno = saved_lineno;
}
if (!ix && !current_function_decl)
pedwarn_with_decl (decl, "`%s' is not defined outside of function scope");
return decl;
}
static tree
choose_string_type (wide_flag, ps_flag)
int wide_flag, ps_flag;
{
if (wide_flag)
return wchar_type_node;
else if (ps_flag)
return unsigned_char_type_node;
else
return char_type_node;
}
tree
combine_strings (strings)
tree strings;
{
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;
int nchars;
const int nchars_max = flag_isoc99 ? 4095 : 509;
int is_pascal_string = 0;
if (TREE_TYPE (strings) == pascal_string_type_node)
{
is_pascal_string = 1;
length = 2;
}
if (TREE_CHAIN (strings))
{
char *p, *q;
for (t = strings; t; t = TREE_CHAIN (t))
{
if (TREE_TYPE (t) == wchar_array_type_node)
{
wide_length += (TREE_STRING_LENGTH (t) - wchar_bytes);
wide_flag = 1;
}
else if (TREE_TYPE (t) == pascal_string_type_node)
{
length += (TREE_STRING_LENGTH (t) - 2);
if (t != strings && !is_pascal_string)
error ("Pascal string-length escape (\\p) not allowed in concatenation");
}
else
{
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 (wide_flag)
length = length * wchar_bytes + wide_length;
p = alloca (length);
q = p;
if (is_pascal_string)
++q;
for (t = strings; t; t = TREE_CHAIN (t))
{
int len = (TREE_STRING_LENGTH (t)
- ((TREE_TYPE (t) == wchar_array_type_node)
? wchar_bytes : 1));
char *string_ptr = TREE_STRING_POINTER (t);
if (TREE_TYPE (t) == pascal_string_type_node)
++string_ptr, --len;
if ((TREE_TYPE (t) == wchar_array_type_node) == wide_flag)
{
memcpy (q, string_ptr, len);
q += len;
}
else
{
int i, j;
for (i = 0; i < len; i++)
{
if (BYTES_BIG_ENDIAN)
{
for (j = 0; j < (WCHAR_TYPE_SIZE / BITS_PER_UNIT) - 1; j++)
*q++ = 0;
*q++ = string_ptr[i];
}
else
{
*q++ = string_ptr[i];
for (j = 0; j < (WCHAR_TYPE_SIZE / BITS_PER_UNIT) - 1; j++)
*q++ = 0;
}
}
}
}
if (wide_flag)
{
int i;
for (i = 0; i < wchar_bytes; i++)
*q++ = 0;
}
else
*q = 0;
if (is_pascal_string)
{
if (length > 255 + 2)
{
error ("Pascal string too long");
length = 255 + 2;
}
*p = length - 2;
}
value = build_string (length, p);
}
else
{
value = strings;
length = TREE_STRING_LENGTH (value);
if (TREE_TYPE (value) == wchar_array_type_node)
wide_flag = 1;
}
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 length `%d' ISO C%d compilers are required to support",
nchars - 1, nchars_max, flag_isoc99 ? 99 : 89);
if (flag_const_strings
&& (! flag_traditional && ! flag_writable_strings))
{
tree elements
= build_type_variant (choose_string_type (wide_flag, is_pascal_string),
1, 0);
TREE_TYPE (value)
= build_array_type (elements,
build_index_type (build_int_2 (nchars - 1, 0)));
}
else
TREE_TYPE (value)
= build_array_type (choose_string_type (wide_flag, is_pascal_string),
build_index_type (build_int_2 (nchars - 1, 0)));
TREE_CONSTANT (value) = 1;
TREE_READONLY (value) = ! flag_writable_strings;
TREE_STATIC (value) = 1;
return value;
}
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, int));
static rtx c_expand_builtin_fprintf PARAMS ((tree, rtx, enum machine_mode,
enum expand_modifier, int, int));
void
constant_expression_warning (value)
tree value;
{
if ((TREE_CODE (value) == INTEGER_CST || TREE_CODE (value) == REAL_CST
|| TREE_CODE (value) == VECTOR_CST
|| TREE_CODE (value) == COMPLEX_CST)
&& TREE_CONSTANT_OVERFLOW (value) && pedantic)
pedwarn ("overflow in constant expression");
}
void
overflow_warning (value)
tree value;
{
if ((TREE_CODE (value) == INTEGER_CST
|| (TREE_CODE (value) == COMPLEX_CST
&& TREE_CODE (TREE_REALPART (value)) == INTEGER_CST))
&& TREE_OVERFLOW (value))
{
TREE_OVERFLOW (value) = 0;
if (skip_evaluation == 0)
warning ("integer overflow in expression");
}
else if ((TREE_CODE (value) == REAL_CST
|| (TREE_CODE (value) == COMPLEX_CST
&& TREE_CODE (TREE_REALPART (value)) == REAL_CST))
&& TREE_OVERFLOW (value))
{
TREE_OVERFLOW (value) = 0;
if (skip_evaluation == 0)
warning ("floating point overflow in expression");
}
else if (TREE_CODE (value) == VECTOR_CST && TREE_OVERFLOW (value))
{
TREE_OVERFLOW (value) = 0;
if (skip_evaluation == 0)
warning ("vector overflow in expression");
}
}
void
unsigned_conversion_warning (result, operand)
tree result, operand;
{
if (TREE_CODE (operand) == INTEGER_CST
&& TREE_CODE (TREE_TYPE (result)) == INTEGER_TYPE
&& TREE_UNSIGNED (TREE_TYPE (result))
&& skip_evaluation == 0
&& !int_fits_type_p (operand, TREE_TYPE (result)))
{
if (!int_fits_type_p (operand, signed_type (TREE_TYPE (result))))
warning ("large integer implicitly truncated to unsigned type");
else if (warn_conversion)
warning ("negative integer implicitly converted to unsigned 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);
}
tree
convert_and_check (type, expr)
tree type, expr;
{
tree t = convert (type, expr);
if (TREE_CODE (t) == INTEGER_CST)
{
if (TREE_OVERFLOW (t))
{
TREE_OVERFLOW (t) = 0;
TREE_CONSTANT_OVERFLOW (t) = TREE_CONSTANT_OVERFLOW (expr);
if (!(TREE_UNSIGNED (type) < TREE_UNSIGNED (TREE_TYPE (expr))
&& TREE_CODE (TREE_TYPE (expr)) == INTEGER_TYPE
&& TYPE_PRECISION (type) == TYPE_PRECISION (TREE_TYPE (expr))))
if ((pedantic
|| TREE_UNSIGNED (type)
|| ! constant_fits_type_p (expr, unsigned_type (type)))
&& skip_evaluation == 0)
warning ("overflow in implicit constant conversion");
}
else
unsigned_conversion_warning (t, expr);
}
return t;
}
struct tlist
{
struct tlist *next;
tree expr, writer;
};
struct tlist_cache
{
struct tlist_cache *next;
struct tlist *cache_before_sp;
struct tlist *cache_after_sp;
tree expr;
};
static struct obstack tlist_obstack;
static char *tlist_firstobj = 0;
static struct tlist *warned_ids;
static struct tlist_cache *save_expr_cache;
static void add_tlist PARAMS ((struct tlist **, struct tlist *, tree, int));
static void merge_tlist PARAMS ((struct tlist **, struct tlist *, int));
static void verify_tree PARAMS ((tree, struct tlist **, struct tlist **, tree));
static int warning_candidate_p PARAMS ((tree));
static void warn_for_collisions PARAMS ((struct tlist *));
static void warn_for_collisions_1 PARAMS ((tree, tree, struct tlist *, int));
static struct tlist *new_tlist PARAMS ((struct tlist *, tree, tree));
static void verify_sequence_points PARAMS ((tree));
static struct tlist *
new_tlist (next, t, writer)
struct tlist *next;
tree t;
tree writer;
{
struct tlist *l;
l = (struct tlist *) obstack_alloc (&tlist_obstack, sizeof *l);
l->next = next;
l->expr = t;
l->writer = writer;
return l;
}
static void
add_tlist (to, add, exclude_writer, copy)
struct tlist **to;
struct tlist *add;
tree exclude_writer;
int copy;
{
while (add)
{
struct tlist *next = add->next;
if (! copy)
add->next = *to;
if (! exclude_writer || add->writer != exclude_writer)
*to = copy ? new_tlist (*to, add->expr, add->writer) : add;
add = next;
}
}
static void
merge_tlist (to, add, copy)
struct tlist **to;
struct tlist *add;
int copy;
{
struct tlist **end = to;
while (*end)
end = &(*end)->next;
while (add)
{
int found = 0;
struct tlist *tmp2;
struct tlist *next = add->next;
for (tmp2 = *to; tmp2; tmp2 = tmp2->next)
if (tmp2->expr == add->expr)
{
found = 1;
if (! tmp2->writer)
tmp2->writer = add->writer;
}
if (! found)
{
*end = copy ? add : new_tlist (NULL, add->expr, add->writer);
end = &(*end)->next;
*end = 0;
}
add = next;
}
}
static void
warn_for_collisions_1 (written, writer, list, only_writes)
tree written, writer;
struct tlist *list;
int only_writes;
{
struct tlist *tmp;
for (tmp = warned_ids; tmp; tmp = tmp->next)
if (tmp->expr == written)
return;
while (list)
{
if (list->expr == written
&& list->writer != writer
&& (! only_writes || list->writer))
{
warned_ids = new_tlist (warned_ids, written, NULL_TREE);
warning ("operation on `%s' may be undefined",
IDENTIFIER_POINTER (DECL_NAME (list->expr)));
}
list = list->next;
}
}
static void
warn_for_collisions (list)
struct tlist *list;
{
struct tlist *tmp;
for (tmp = list; tmp; tmp = tmp->next)
{
if (tmp->writer)
warn_for_collisions_1 (tmp->expr, tmp->writer, list, 0);
}
}
static int
warning_candidate_p (x)
tree x;
{
return TREE_CODE (x) == VAR_DECL || TREE_CODE (x) == PARM_DECL;
}
static void
verify_tree (x, pbefore_sp, pno_sp, writer)
tree x;
struct tlist **pbefore_sp, **pno_sp;
tree writer;
{
struct tlist *tmp_before, *tmp_nosp, *tmp_list2, *tmp_list3;
enum tree_code code;
char class;
if (x == NULL)
return;
restart:
code = TREE_CODE (x);
class = TREE_CODE_CLASS (code);
if (warning_candidate_p (x))
{
*pno_sp = new_tlist (*pno_sp, x, writer);
return;
}
switch (code)
{
case CONSTRUCTOR:
return;
case COMPOUND_EXPR:
case TRUTH_ANDIF_EXPR:
case TRUTH_ORIF_EXPR:
tmp_before = tmp_nosp = tmp_list3 = 0;
verify_tree (TREE_OPERAND (x, 0), &tmp_before, &tmp_nosp, NULL_TREE);
warn_for_collisions (tmp_nosp);
merge_tlist (pbefore_sp, tmp_before, 0);
merge_tlist (pbefore_sp, tmp_nosp, 0);
verify_tree (TREE_OPERAND (x, 1), &tmp_list3, pno_sp, NULL_TREE);
merge_tlist (pbefore_sp, tmp_list3, 0);
return;
case COND_EXPR:
tmp_before = tmp_list2 = 0;
verify_tree (TREE_OPERAND (x, 0), &tmp_before, &tmp_list2, NULL_TREE);
warn_for_collisions (tmp_list2);
merge_tlist (pbefore_sp, tmp_before, 0);
merge_tlist (pbefore_sp, tmp_list2, 1);
tmp_list3 = tmp_nosp = 0;
verify_tree (TREE_OPERAND (x, 1), &tmp_list3, &tmp_nosp, NULL_TREE);
warn_for_collisions (tmp_nosp);
merge_tlist (pbefore_sp, tmp_list3, 0);
tmp_list3 = tmp_list2 = 0;
verify_tree (TREE_OPERAND (x, 2), &tmp_list3, &tmp_list2, NULL_TREE);
warn_for_collisions (tmp_list2);
merge_tlist (pbefore_sp, tmp_list3, 0);
merge_tlist (&tmp_nosp, tmp_list2, 0);
add_tlist (pno_sp, tmp_nosp, NULL_TREE, 0);
return;
case PREDECREMENT_EXPR:
case PREINCREMENT_EXPR:
case POSTDECREMENT_EXPR:
case POSTINCREMENT_EXPR:
verify_tree (TREE_OPERAND (x, 0), pno_sp, pno_sp, x);
return;
case MODIFY_EXPR:
tmp_before = tmp_nosp = tmp_list3 = 0;
verify_tree (TREE_OPERAND (x, 1), &tmp_before, &tmp_nosp, NULL_TREE);
verify_tree (TREE_OPERAND (x, 0), &tmp_list3, &tmp_list3, x);
add_tlist (&tmp_before, tmp_list3, x, 1);
warn_for_collisions (tmp_before);
add_tlist (pno_sp, tmp_list3, x, 0);
warn_for_collisions_1 (TREE_OPERAND (x, 0), x, tmp_nosp, 1);
merge_tlist (pbefore_sp, tmp_before, 0);
if (warning_candidate_p (TREE_OPERAND (x, 0)))
merge_tlist (&tmp_nosp, new_tlist (NULL, TREE_OPERAND (x, 0), x), 0);
add_tlist (pno_sp, tmp_nosp, NULL_TREE, 1);
return;
case CALL_EXPR:
tmp_before = tmp_nosp = tmp_list2 = tmp_list3 = 0;
verify_tree (TREE_OPERAND (x, 0), &tmp_before, &tmp_nosp, NULL_TREE);
if (TREE_OPERAND (x, 1))
verify_tree (TREE_OPERAND (x, 1), &tmp_list2, &tmp_list3, NULL_TREE);
merge_tlist (&tmp_list3, tmp_list2, 0);
add_tlist (&tmp_before, tmp_list3, NULL_TREE, 0);
add_tlist (&tmp_before, tmp_nosp, NULL_TREE, 0);
warn_for_collisions (tmp_before);
add_tlist (pbefore_sp, tmp_before, NULL_TREE, 0);
return;
case TREE_LIST:
while (x)
{
tmp_before = tmp_nosp = 0;
verify_tree (TREE_VALUE (x), &tmp_before, &tmp_nosp, NULL_TREE);
merge_tlist (&tmp_nosp, tmp_before, 0);
add_tlist (pno_sp, tmp_nosp, NULL_TREE, 0);
x = TREE_CHAIN (x);
}
return;
case SAVE_EXPR:
{
struct tlist_cache *t;
for (t = save_expr_cache; t; t = t->next)
if (t->expr == x)
break;
if (! t)
{
t = (struct tlist_cache *) obstack_alloc (&tlist_obstack,
sizeof *t);
t->next = save_expr_cache;
t->expr = x;
save_expr_cache = t;
tmp_before = tmp_nosp = 0;
verify_tree (TREE_OPERAND (x, 0), &tmp_before, &tmp_nosp, NULL_TREE);
warn_for_collisions (tmp_nosp);
tmp_list3 = 0;
while (tmp_nosp)
{
struct tlist *t = tmp_nosp;
tmp_nosp = t->next;
merge_tlist (&tmp_list3, t, 0);
}
t->cache_before_sp = tmp_before;
t->cache_after_sp = tmp_list3;
}
merge_tlist (pbefore_sp, t->cache_before_sp, 1);
add_tlist (pno_sp, t->cache_after_sp, NULL_TREE, 1);
return;
}
default:
break;
}
if (class == '1')
{
if (first_rtl_op (code) == 0)
return;
x = TREE_OPERAND (x, 0);
writer = 0;
goto restart;
}
switch (class)
{
case 'r':
case '<':
case '2':
case 'b':
case 'e':
case 's':
case 'x':
{
int lp;
int max = first_rtl_op (TREE_CODE (x));
for (lp = 0; lp < max; lp++)
{
tmp_before = tmp_nosp = 0;
verify_tree (TREE_OPERAND (x, lp), &tmp_before, &tmp_nosp, NULL_TREE);
merge_tlist (&tmp_nosp, tmp_before, 0);
add_tlist (pno_sp, tmp_nosp, NULL_TREE, 0);
}
break;
}
}
}
static void
verify_sequence_points (expr)
tree expr;
{
struct tlist *before_sp = 0, *after_sp = 0;
warned_ids = 0;
save_expr_cache = 0;
if (tlist_firstobj == 0)
{
gcc_obstack_init (&tlist_obstack);
tlist_firstobj = obstack_alloc (&tlist_obstack, 0);
}
verify_tree (expr, &before_sp, &after_sp, 0);
warn_for_collisions (after_sp);
obstack_free (&tlist_obstack, tlist_firstobj);
}
tree
c_expand_expr_stmt (expr)
tree 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);
if (warn_sequence_point)
verify_sequence_points (expr);
if (TREE_TYPE (expr) != error_mark_node
&& !COMPLETE_OR_VOID_TYPE_P (TREE_TYPE (expr))
&& TREE_CODE (TREE_TYPE (expr)) != ARRAY_TYPE)
error ("expression statement has incomplete type");
last_expr_type = TREE_TYPE (expr);
return add_stmt (build_stmt (EXPR_STMT, expr));
}
tree
check_case_value (value)
tree value;
{
if (value == NULL_TREE)
return value;
STRIP_TYPE_NOPS (value);
if (c_language == clk_cplusplus)
{
value = decl_constant_value (value);
STRIP_TYPE_NOPS (value);
value = fold (value);
}
if (TREE_CODE (value) != INTEGER_CST
&& value != error_mark_node)
{
error ("case label does not reduce to an integer constant");
value = error_mark_node;
}
else
value = default_conversion (value);
constant_expression_warning (value);
return value;
}
tree
type_for_size (bits, unsignedp)
unsigned bits;
int unsignedp;
{
if (bits == TYPE_PRECISION (integer_type_node))
return unsignedp ? unsigned_type_node : integer_type_node;
if (bits == TYPE_PRECISION (signed_char_type_node))
return unsignedp ? unsigned_char_type_node : signed_char_type_node;
if (bits == TYPE_PRECISION (short_integer_type_node))
return unsignedp ? short_unsigned_type_node : short_integer_type_node;
if (bits == TYPE_PRECISION (long_integer_type_node))
return unsignedp ? long_unsigned_type_node : long_integer_type_node;
if (bits == TYPE_PRECISION (long_long_integer_type_node))
return (unsignedp ? long_long_unsigned_type_node
: long_long_integer_type_node);
if (bits == TYPE_PRECISION (widest_integer_literal_type_node))
return (unsignedp ? widest_unsigned_literal_type_node
: widest_integer_literal_type_node);
if (bits <= TYPE_PRECISION (intQI_type_node))
return unsignedp ? unsigned_intQI_type_node : intQI_type_node;
if (bits <= TYPE_PRECISION (intHI_type_node))
return unsignedp ? unsigned_intHI_type_node : intHI_type_node;
if (bits <= TYPE_PRECISION (intSI_type_node))
return unsignedp ? unsigned_intSI_type_node : intSI_type_node;
if (bits <= TYPE_PRECISION (intDI_type_node))
return unsignedp ? unsigned_intDI_type_node : intDI_type_node;
return 0;
}
tree
type_for_mode (mode, unsignedp)
enum machine_mode mode;
int unsignedp;
{
if (mode == TYPE_MODE (integer_type_node))
return unsignedp ? unsigned_type_node : integer_type_node;
if (mode == TYPE_MODE (signed_char_type_node))
return unsignedp ? unsigned_char_type_node : signed_char_type_node;
if (mode == TYPE_MODE (short_integer_type_node))
return unsignedp ? short_unsigned_type_node : short_integer_type_node;
if (mode == TYPE_MODE (long_integer_type_node))
return unsignedp ? long_unsigned_type_node : long_integer_type_node;
if (mode == TYPE_MODE (long_long_integer_type_node))
return unsignedp ? long_long_unsigned_type_node : long_long_integer_type_node;
if (mode == TYPE_MODE (widest_integer_literal_type_node))
return unsignedp ? widest_unsigned_literal_type_node
: widest_integer_literal_type_node;
if (mode == QImode)
return unsignedp ? unsigned_intQI_type_node : intQI_type_node;
if (mode == HImode)
return unsignedp ? unsigned_intHI_type_node : intHI_type_node;
if (mode == SImode)
return unsignedp ? unsigned_intSI_type_node : intSI_type_node;
if (mode == DImode)
return unsignedp ? unsigned_intDI_type_node : intDI_type_node;
#if HOST_BITS_PER_WIDE_INT >= 64
if (mode == TYPE_MODE (intTI_type_node))
return unsignedp ? unsigned_intTI_type_node : intTI_type_node;
#endif
if (mode == TYPE_MODE (float_type_node))
return float_type_node;
if (mode == TYPE_MODE (double_type_node))
return double_type_node;
if (mode == TYPE_MODE (long_double_type_node))
return long_double_type_node;
if (mode == TYPE_MODE (build_pointer_type (char_type_node)))
return build_pointer_type (char_type_node);
if (mode == TYPE_MODE (build_pointer_type (integer_type_node)))
return build_pointer_type (integer_type_node);
#ifdef VECTOR_MODE_SUPPORTED_P
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 V16SFmode:
return V16SF_type_node;
case V4SFmode:
return V4SF_type_node;
case V2SFmode:
return V2SF_type_node;
default:
break;
}
}
#endif
return 0;
}
tree
unsigned_type (type)
tree type;
{
tree type1 = TYPE_MAIN_VARIANT (type);
if (type1 == signed_char_type_node || type1 == char_type_node)
return unsigned_char_type_node;
if (type1 == integer_type_node)
return unsigned_type_node;
if (type1 == short_integer_type_node)
return short_unsigned_type_node;
if (type1 == long_integer_type_node)
return long_unsigned_type_node;
if (type1 == long_long_integer_type_node)
return long_long_unsigned_type_node;
if (type1 == widest_integer_literal_type_node)
return widest_unsigned_literal_type_node;
#if HOST_BITS_PER_WIDE_INT >= 64
if (type1 == intTI_type_node)
return unsigned_intTI_type_node;
#endif
if (type1 == intDI_type_node)
return unsigned_intDI_type_node;
if (type1 == intSI_type_node)
return unsigned_intSI_type_node;
if (type1 == intHI_type_node)
return unsigned_intHI_type_node;
if (type1 == intQI_type_node)
return unsigned_intQI_type_node;
return signed_or_unsigned_type (1, type);
}
tree
signed_type (type)
tree type;
{
tree type1 = TYPE_MAIN_VARIANT (type);
if (type1 == unsigned_char_type_node || type1 == char_type_node)
return signed_char_type_node;
if (type1 == unsigned_type_node)
return integer_type_node;
if (type1 == short_unsigned_type_node)
return short_integer_type_node;
if (type1 == long_unsigned_type_node)
return long_integer_type_node;
if (type1 == long_long_unsigned_type_node)
return long_long_integer_type_node;
if (type1 == widest_unsigned_literal_type_node)
return widest_integer_literal_type_node;
#if HOST_BITS_PER_WIDE_INT >= 64
if (type1 == unsigned_intTI_type_node)
return intTI_type_node;
#endif
if (type1 == unsigned_intDI_type_node)
return intDI_type_node;
if (type1 == unsigned_intSI_type_node)
return intSI_type_node;
if (type1 == unsigned_intHI_type_node)
return intHI_type_node;
if (type1 == unsigned_intQI_type_node)
return intQI_type_node;
return signed_or_unsigned_type (0, type);
}
tree
signed_or_unsigned_type (unsignedp, type)
int unsignedp;
tree type;
{
if (! INTEGRAL_TYPE_P (type)
|| TREE_UNSIGNED (type) == unsignedp)
return type;
if (TYPE_PRECISION (type) == TYPE_PRECISION (signed_char_type_node))
return unsignedp ? unsigned_char_type_node : signed_char_type_node;
if (TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node))
return unsignedp ? unsigned_type_node : integer_type_node;
if (TYPE_PRECISION (type) == TYPE_PRECISION (short_integer_type_node))
return unsignedp ? short_unsigned_type_node : short_integer_type_node;
if (TYPE_PRECISION (type) == TYPE_PRECISION (long_integer_type_node))
return unsignedp ? long_unsigned_type_node : long_integer_type_node;
if (TYPE_PRECISION (type) == TYPE_PRECISION (long_long_integer_type_node))
return (unsignedp ? long_long_unsigned_type_node
: long_long_integer_type_node);
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;
}
unsigned int
min_precision (value, unsignedp)
tree value;
int unsignedp;
{
int log;
if (tree_int_cst_sgn (value) < 0)
value = fold (build1 (BIT_NOT_EXPR, TREE_TYPE (value), value));
if (integer_zerop (value))
log = 0;
else
log = tree_floor_log2 (value);
return log + 1 + ! unsignedp;
}
void
binary_op_error (code)
enum tree_code code;
{
const char *opname;
switch (code)
{
case NOP_EXPR:
error ("invalid truth-value expression");
return;
case PLUS_EXPR:
opname = "+"; break;
case MINUS_EXPR:
opname = "-"; break;
case MULT_EXPR:
opname = "*"; break;
case MAX_EXPR:
opname = "max"; break;
case MIN_EXPR:
opname = "min"; break;
case EQ_EXPR:
opname = "=="; break;
case NE_EXPR:
opname = "!="; break;
case LE_EXPR:
opname = "<="; break;
case GE_EXPR:
opname = ">="; break;
case LT_EXPR:
opname = "<"; break;
case GT_EXPR:
opname = ">"; break;
case LSHIFT_EXPR:
opname = "<<"; break;
case RSHIFT_EXPR:
opname = ">>"; break;
case TRUNC_MOD_EXPR:
case FLOOR_MOD_EXPR:
opname = "%"; break;
case TRUNC_DIV_EXPR:
case FLOOR_DIV_EXPR:
opname = "/"; break;
case BIT_AND_EXPR:
opname = "&"; break;
case BIT_IOR_EXPR:
opname = "|"; break;
case TRUTH_ANDIF_EXPR:
opname = "&&"; break;
case TRUTH_ORIF_EXPR:
opname = "||"; break;
case BIT_XOR_EXPR:
opname = "^"; break;
case LROTATE_EXPR:
case RROTATE_EXPR:
opname = "rotate"; break;
default:
opname = "unknown"; break;
}
error ("invalid operands to binary %s", opname);
}
tree
shorten_compare (op0_ptr, op1_ptr, restype_ptr, rescode_ptr)
tree *op0_ptr, *op1_ptr;
tree *restype_ptr;
enum tree_code *rescode_ptr;
{
tree type;
tree op0 = *op0_ptr;
tree op1 = *op1_ptr;
int unsignedp0, unsignedp1;
int real1, real2;
tree primop0, primop1;
enum tree_code code = *rescode_ptr;
primop0 = get_narrower (op0, &unsignedp0);
primop1 = get_narrower (op1, &unsignedp1);
if (op0 == primop0 && TREE_TYPE (op0) != *restype_ptr)
unsignedp0 = TREE_UNSIGNED (TREE_TYPE (op0));
if (op1 == primop1 && TREE_TYPE (op1) != *restype_ptr)
unsignedp1 = TREE_UNSIGNED (TREE_TYPE (op1));
real1 = TREE_CODE (TREE_TYPE (primop0)) == REAL_TYPE;
real2 = TREE_CODE (TREE_TYPE (primop1)) == REAL_TYPE;
if (TREE_CONSTANT (primop0)
&& ! integer_zerop (primop1) && ! real_zerop (primop1))
{
tree tem = primop0;
int temi = unsignedp0;
primop0 = primop1;
primop1 = tem;
tem = op0;
op0 = op1;
op1 = tem;
*op0_ptr = op0;
*op1_ptr = op1;
unsignedp0 = unsignedp1;
unsignedp1 = temi;
temi = real1;
real1 = real2;
real2 = temi;
switch (code)
{
case LT_EXPR:
code = GT_EXPR;
break;
case GT_EXPR:
code = LT_EXPR;
break;
case LE_EXPR:
code = GE_EXPR;
break;
case GE_EXPR:
code = LE_EXPR;
break;
default:
break;
}
*rescode_ptr = code;
}
if (!real1 && !real2
&& TREE_CODE (primop1) == INTEGER_CST
&& TYPE_PRECISION (TREE_TYPE (primop0)) < TYPE_PRECISION (*restype_ptr))
{
int min_gt, max_gt, min_lt, max_lt;
tree maxval, minval;
int unsignedp = TREE_UNSIGNED (*restype_ptr);
tree val;
type = signed_or_unsigned_type (unsignedp0, TREE_TYPE (primop0));
if (TREE_CODE (type) == ENUMERAL_TYPE)
type = type_for_size (TYPE_PRECISION (type), unsignedp0);
maxval = TYPE_MAX_VALUE (type);
minval = TYPE_MIN_VALUE (type);
if (unsignedp && !unsignedp0)
*restype_ptr = signed_type (*restype_ptr);
if (TREE_TYPE (primop1) != *restype_ptr)
primop1 = convert (*restype_ptr, primop1);
if (type != *restype_ptr)
{
minval = convert (*restype_ptr, minval);
maxval = convert (*restype_ptr, maxval);
}
if (unsignedp && unsignedp0)
{
min_gt = INT_CST_LT_UNSIGNED (primop1, minval);
max_gt = INT_CST_LT_UNSIGNED (primop1, maxval);
min_lt = INT_CST_LT_UNSIGNED (minval, primop1);
max_lt = INT_CST_LT_UNSIGNED (maxval, primop1);
}
else
{
min_gt = INT_CST_LT (primop1, minval);
max_gt = INT_CST_LT (primop1, maxval);
min_lt = INT_CST_LT (minval, primop1);
max_lt = INT_CST_LT (maxval, primop1);
}
val = 0;
if (code == NE_EXPR)
{
if (max_lt || min_gt)
val = boolean_true_node;
}
else if (code == EQ_EXPR)
{
if (max_lt || min_gt)
val = boolean_false_node;
}
else if (code == LT_EXPR)
{
if (max_lt)
val = boolean_true_node;
if (!min_lt)
val = boolean_false_node;
}
else if (code == GT_EXPR)
{
if (min_gt)
val = boolean_true_node;
if (!max_gt)
val = boolean_false_node;
}
else if (code == LE_EXPR)
{
if (!max_gt)
val = boolean_true_node;
if (min_gt)
val = boolean_false_node;
}
else if (code == GE_EXPR)
{
if (!min_lt)
val = boolean_true_node;
if (max_lt)
val = boolean_false_node;
}
if (unsignedp && !unsignedp0)
{
if (val != 0)
switch (code)
{
case LT_EXPR:
case GE_EXPR:
primop1 = TYPE_MIN_VALUE (type);
val = 0;
break;
case LE_EXPR:
case GT_EXPR:
primop1 = TYPE_MAX_VALUE (type);
val = 0;
break;
default:
break;
}
type = unsigned_type (type);
}
if (!max_gt && !unsignedp0 && TREE_CODE (primop0) != INTEGER_CST)
{
if (val == boolean_false_node)
warning ("comparison is always false due to limited range of data type");
if (val == boolean_true_node)
warning ("comparison is always true due to limited range of data type");
}
if (!min_lt && unsignedp0 && TREE_CODE (primop0) != INTEGER_CST)
{
if (val == boolean_false_node)
warning ("comparison is always false due to limited range of data type");
if (val == boolean_true_node)
warning ("comparison is always true due to limited range of data type");
}
if (val != 0)
{
if (TREE_SIDE_EFFECTS (primop0))
return build (COMPOUND_EXPR, TREE_TYPE (val), primop0, val);
return val;
}
}
else if (real1 && real2
&& (TYPE_PRECISION (TREE_TYPE (primop0))
== TYPE_PRECISION (TREE_TYPE (primop1))))
type = TREE_TYPE (primop0);
else if (unsignedp0 == unsignedp1 && real1 == real2
&& TYPE_PRECISION (TREE_TYPE (primop0)) < TYPE_PRECISION (*restype_ptr)
&& TYPE_PRECISION (TREE_TYPE (primop1)) < TYPE_PRECISION (*restype_ptr))
{
type = common_type (TREE_TYPE (primop0), TREE_TYPE (primop1));
type = signed_or_unsigned_type (unsignedp0
|| TREE_UNSIGNED (*restype_ptr),
type);
primop0 = convert (signed_or_unsigned_type (unsignedp0, TREE_TYPE (primop0)),
primop0);
primop1 = convert (signed_or_unsigned_type (unsignedp1, TREE_TYPE (primop1)),
primop1);
}
else
{
type = *restype_ptr;
primop0 = op0;
primop1 = op1;
if (!real1 && !real2 && integer_zerop (primop1)
&& TREE_UNSIGNED (*restype_ptr))
{
tree value = 0;
switch (code)
{
case GE_EXPR:
if (extra_warnings && !in_system_header
&& ! (TREE_CODE (primop0) == INTEGER_CST
&& ! TREE_OVERFLOW (convert (signed_type (type),
primop0))))
warning ("comparison of unsigned expression >= 0 is always true");
value = boolean_true_node;
break;
case LT_EXPR:
if (extra_warnings && !in_system_header
&& ! (TREE_CODE (primop0) == INTEGER_CST
&& ! TREE_OVERFLOW (convert (signed_type (type),
primop0))))
warning ("comparison of unsigned expression < 0 is always false");
value = boolean_false_node;
break;
default:
break;
}
if (value != 0)
{
if (TREE_SIDE_EFFECTS (primop0))
return build (COMPOUND_EXPR, TREE_TYPE (value),
primop0, value);
return value;
}
}
}
*op0_ptr = convert (type, primop0);
*op1_ptr = convert (type, primop1);
*restype_ptr = boolean_type_node;
return 0;
}
tree
pointer_int_sum (resultcode, ptrop, intop)
enum tree_code resultcode;
tree ptrop, intop;
{
tree size_exp;
tree result;
tree folded;
tree result_type = TREE_TYPE (ptrop);
if (TREE_CODE (TREE_TYPE (result_type)) == VOID_TYPE)
{
if (pedantic || warn_pointer_arith)
pedwarn ("pointer of type `void *' used in arithmetic");
size_exp = integer_one_node;
}
else if (TREE_CODE (TREE_TYPE (result_type)) == FUNCTION_TYPE)
{
if (pedantic || warn_pointer_arith)
pedwarn ("pointer to a function used in arithmetic");
size_exp = integer_one_node;
}
else if (TREE_CODE (TREE_TYPE (result_type)) == METHOD_TYPE)
{
if (pedantic || warn_pointer_arith)
pedwarn ("pointer to member function used in arithmetic");
size_exp = integer_one_node;
}
else if (TREE_CODE (TREE_TYPE (result_type)) == OFFSET_TYPE)
{
if (pedantic || warn_pointer_arith)
pedwarn ("pointer to a member used in arithmetic");
size_exp = integer_one_node;
}
else
size_exp = size_in_bytes (TREE_TYPE (result_type));
if ((TREE_CODE (intop) == PLUS_EXPR || TREE_CODE (intop) == MINUS_EXPR)
&& ! TREE_CONSTANT (intop)
&& TREE_CONSTANT (TREE_OPERAND (intop, 1))
&& TREE_CONSTANT (size_exp)
&& TREE_CODE (TREE_TYPE (TREE_OPERAND (intop, 0))) == INTEGER_TYPE
&& (! TREE_UNSIGNED (TREE_TYPE (intop))
|| (TYPE_PRECISION (TREE_TYPE (intop))
== TYPE_PRECISION (TREE_TYPE (ptrop)))))
{
enum tree_code subcode = resultcode;
tree int_type = TREE_TYPE (intop);
if (TREE_CODE (intop) == MINUS_EXPR)
subcode = (subcode == PLUS_EXPR ? MINUS_EXPR : PLUS_EXPR);
ptrop = build_binary_op (subcode, ptrop,
convert (int_type, TREE_OPERAND (intop, 1)), 1);
intop = convert (int_type, TREE_OPERAND (intop, 0));
}
if (TYPE_PRECISION (TREE_TYPE (intop)) != TYPE_PRECISION (sizetype)
|| TREE_UNSIGNED (TREE_TYPE (intop)) != TREE_UNSIGNED (sizetype))
intop = convert (type_for_size (TYPE_PRECISION (sizetype),
TREE_UNSIGNED (sizetype)), intop);
intop = convert (result_type,
build_binary_op (MULT_EXPR, intop,
convert (TREE_TYPE (intop), size_exp), 1));
result = build (resultcode, result_type, ptrop, intop);
folded = fold (result);
if (folded == result)
TREE_CONSTANT (folded) = TREE_CONSTANT (ptrop) & TREE_CONSTANT (intop);
return folded;
}
tree
truthvalue_conversion (expr)
tree expr;
{
if (TREE_CODE (expr) == ERROR_MARK)
return expr;
#if 0
switch (TREE_CODE (TREE_TYPE (expr)))
{
case RECORD_TYPE:
error ("struct type value used where scalar is required");
return boolean_false_node;
case UNION_TYPE:
error ("union type value used where scalar is required");
return boolean_false_node;
case ARRAY_TYPE:
error ("array type value used where scalar is required");
return boolean_false_node;
default:
break;
}
#endif
switch (TREE_CODE (expr))
{
case EQ_EXPR:
case NE_EXPR: case LE_EXPR: case GE_EXPR: case LT_EXPR: case GT_EXPR:
case TRUTH_ANDIF_EXPR:
case TRUTH_ORIF_EXPR:
case TRUTH_AND_EXPR:
case TRUTH_OR_EXPR:
case TRUTH_XOR_EXPR:
case TRUTH_NOT_EXPR:
TREE_TYPE (expr) = boolean_type_node;
return expr;
case ERROR_MARK:
return expr;
case INTEGER_CST:
return integer_zerop (expr) ? boolean_false_node : boolean_true_node;
case REAL_CST:
return real_zerop (expr) ? boolean_false_node : boolean_true_node;
case ADDR_EXPR:
if (DECL_P (TREE_OPERAND (expr, 0))
&& DECL_EXTERNAL (TREE_OPERAND (expr, 0)))
break;
if (TREE_SIDE_EFFECTS (TREE_OPERAND (expr, 0)))
return build (COMPOUND_EXPR, boolean_type_node,
TREE_OPERAND (expr, 0), boolean_true_node);
else
return boolean_true_node;
case COMPLEX_EXPR:
return build_binary_op ((TREE_SIDE_EFFECTS (TREE_OPERAND (expr, 1))
? TRUTH_OR_EXPR : TRUTH_ORIF_EXPR),
truthvalue_conversion (TREE_OPERAND (expr, 0)),
truthvalue_conversion (TREE_OPERAND (expr, 1)),
0);
case NEGATE_EXPR:
case ABS_EXPR:
case FLOAT_EXPR:
case FFS_EXPR:
return truthvalue_conversion (TREE_OPERAND (expr, 0));
case LROTATE_EXPR:
case RROTATE_EXPR:
if (TREE_SIDE_EFFECTS (TREE_OPERAND (expr, 1)))
return build (COMPOUND_EXPR, boolean_type_node, TREE_OPERAND (expr, 1),
truthvalue_conversion (TREE_OPERAND (expr, 0)));
else
return truthvalue_conversion (TREE_OPERAND (expr, 0));
case COND_EXPR:
return fold (build (COND_EXPR, boolean_type_node, TREE_OPERAND (expr, 0),
truthvalue_conversion (TREE_OPERAND (expr, 1)),
truthvalue_conversion (TREE_OPERAND (expr, 2))));
case CONVERT_EXPR:
if (TREE_CODE (TREE_TYPE (expr)) == REFERENCE_TYPE
|| TREE_CODE (TREE_TYPE (TREE_OPERAND (expr, 0))) == REFERENCE_TYPE)
break;
case NOP_EXPR:
if (TYPE_PRECISION (TREE_TYPE (expr))
>= TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (expr, 0))))
return truthvalue_conversion (TREE_OPERAND (expr, 0));
break;
case MINUS_EXPR:
if (TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
&& TREE_CODE (TREE_TYPE (expr)) == REAL_TYPE)
break;
case BIT_XOR_EXPR:
if (TREE_TYPE (TREE_OPERAND (expr, 0))
== TREE_TYPE (TREE_OPERAND (expr, 1)))
return build_binary_op (NE_EXPR, TREE_OPERAND (expr, 0),
TREE_OPERAND (expr, 1), 1);
return build_binary_op (NE_EXPR, TREE_OPERAND (expr, 0),
fold (build1 (NOP_EXPR,
TREE_TYPE (TREE_OPERAND (expr, 0)),
TREE_OPERAND (expr, 1))), 1);
case BIT_AND_EXPR:
if (integer_onep (TREE_OPERAND (expr, 1))
&& TREE_TYPE (expr) != boolean_type_node)
return build1 (NOP_EXPR, boolean_type_node, expr);
break;
case MODIFY_EXPR:
if (warn_parentheses && C_EXP_ORIGINAL_CODE (expr) == MODIFY_EXPR)
warning ("suggest parentheses around assignment used as truth value");
break;
default:
break;
}
if (TREE_CODE (TREE_TYPE (expr)) == COMPLEX_TYPE)
{
tree tem = save_expr (expr);
return (build_binary_op
((TREE_SIDE_EFFECTS (expr)
? TRUTH_OR_EXPR : TRUTH_ORIF_EXPR),
truthvalue_conversion (build_unary_op (REALPART_EXPR, tem, 0)),
truthvalue_conversion (build_unary_op (IMAGPART_EXPR, tem, 0)),
0));
}
return build_binary_op (NE_EXPR, expr, integer_zero_node, 1);
}
static tree builtin_function_2 PARAMS ((const char *, const char *, tree, tree,
int, enum built_in_class, int, int,
int));
tree
c_build_qualified_type (type, type_quals)
tree type;
int type_quals;
{
if ((type_quals & TYPE_QUAL_RESTRICT)
&& (!POINTER_TYPE_P (type)
|| !C_TYPE_OBJECT_OR_INCOMPLETE_P (TREE_TYPE (type))))
{
error ("invalid use of `restrict'");
type_quals &= ~TYPE_QUAL_RESTRICT;
}
if (TREE_CODE (type) == ARRAY_TYPE)
return build_array_type (c_build_qualified_type (TREE_TYPE (type),
type_quals),
TYPE_DOMAIN (type));
return build_qualified_type (type, type_quals);
}
void
c_apply_type_quals_to_decl (type_quals, decl)
int type_quals;
tree decl;
{
if ((type_quals & TYPE_QUAL_CONST)
|| (TREE_TYPE (decl)
&& TREE_CODE (TREE_TYPE (decl)) == REFERENCE_TYPE))
TREE_READONLY (decl) = 1;
if (type_quals & TYPE_QUAL_VOLATILE)
{
TREE_SIDE_EFFECTS (decl) = 1;
TREE_THIS_VOLATILE (decl) = 1;
}
if (type_quals & TYPE_QUAL_RESTRICT)
{
if (!TREE_TYPE (decl)
|| !POINTER_TYPE_P (TREE_TYPE (decl))
|| !C_TYPE_OBJECT_OR_INCOMPLETE_P (TREE_TYPE (TREE_TYPE (decl))))
error ("invalid use of `restrict'");
else if (flag_strict_aliasing)
DECL_POINTER_ALIAS_SET (decl) = -2;
}
}
HOST_WIDE_INT
c_common_get_alias_set (t)
tree t;
{
tree u;
if (TREE_CODE (t) == VECTOR_TYPE)
return 0;
for (u = t;
TREE_CODE (u) == COMPONENT_REF || TREE_CODE (u) == ARRAY_REF;
u = TREE_OPERAND (u, 0))
if (TREE_CODE (u) == COMPONENT_REF
&& TREE_CODE (TREE_TYPE (TREE_OPERAND (u, 0))) == UNION_TYPE)
return 0;
if (TREE_CODE_CLASS (TREE_CODE (t)) == 'r'
&& TREE_CODE (TREE_TYPE (t)) == INTEGER_TYPE
&& TYPE_PRECISION (TREE_TYPE (t)) == TYPE_PRECISION (char_type_node))
return 0;
if (! TYPE_P (t))
return -1;
if (TREE_CODE (t) == INTEGER_TYPE && TREE_UNSIGNED (t))
{
tree t1 = signed_type (t);
if (t1 != t)
return get_alias_set (t1);
}
else if (POINTER_TYPE_P (t))
{
tree t1;
t1 = build_type_no_quals (t);
if (t1 != t)
return get_alias_set (t1);
}
return -1;
}
tree
c_alignof (type)
tree type;
{
enum tree_code code = TREE_CODE (type);
tree t;
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));
}
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));
}
static const struct attribute_spec c_format_attribute_table[] =
{
{ "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 }
};
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 traditional_ptr_type_node;
tree traditional_cptr_type_node;
tree traditional_len_type_node;
tree va_list_ref_type_node;
tree va_list_arg_type_node;
format_attribute_table = c_format_attribute_table;
record_builtin_type (RID_INT, NULL, integer_type_node);
record_builtin_type (RID_CHAR, "char", char_type_node);
if (c_language == clk_cplusplus)
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",
long_unsigned_type_node);
if (c_language == clk_cplusplus)
record_builtin_type (RID_MAX, "unsigned long", long_unsigned_type_node);
record_builtin_type (RID_MAX, "long long int",
long_long_integer_type_node);
record_builtin_type (RID_MAX, "long long unsigned int",
long_long_unsigned_type_node);
if (c_language == clk_cplusplus)
record_builtin_type (RID_MAX, "long long unsigned",
long_long_unsigned_type_node);
record_builtin_type (RID_SHORT, "short int", short_integer_type_node);
record_builtin_type (RID_MAX, "short unsigned int",
short_unsigned_type_node);
if (c_language == clk_cplusplus)
record_builtin_type (RID_MAX, "unsigned short",
short_unsigned_type_node);
record_builtin_type (RID_MAX, "signed char", signed_char_type_node);
record_builtin_type (RID_MAX, "unsigned char", unsigned_char_type_node);
pushdecl (build_decl (TYPE_DECL, NULL_TREE, intQI_type_node));
pushdecl (build_decl (TYPE_DECL, NULL_TREE, intHI_type_node));
pushdecl (build_decl (TYPE_DECL, NULL_TREE, intSI_type_node));
pushdecl (build_decl (TYPE_DECL, NULL_TREE, intDI_type_node));
#if HOST_BITS_PER_WIDE_INT >= 64
pushdecl (build_decl (TYPE_DECL, get_identifier ("__int128_t"), intTI_type_node));
#endif
pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intQI_type_node));
pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intHI_type_node));
pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intSI_type_node));
pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intDI_type_node));
#if HOST_BITS_PER_WIDE_INT >= 64
pushdecl (build_decl (TYPE_DECL, get_identifier ("__uint128_t"), unsigned_intTI_type_node));
#endif
widest_integer_literal_type_node
= make_signed_type (HOST_BITS_PER_WIDE_INT * 2);
pushdecl (build_decl (TYPE_DECL, NULL_TREE,
widest_integer_literal_type_node));
widest_unsigned_literal_type_node
= make_unsigned_type (HOST_BITS_PER_WIDE_INT * 2);
pushdecl (build_decl (TYPE_DECL, NULL_TREE,
widest_unsigned_literal_type_node));
c_size_type_node =
TREE_TYPE (identifier_global_value (get_identifier (SIZE_TYPE)));
signed_size_type_node = signed_type (c_size_type_node);
if (flag_traditional)
c_size_type_node = signed_size_type_node;
set_sizetype (c_size_type_node);
build_common_tree_nodes_2 (flag_short_double);
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"),
complex_integer_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("complex float"),
complex_float_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("complex double"),
complex_double_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("complex long double"),
complex_long_double_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector unsigned char"),
vector_unsigned_char_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector signed char"),
vector_signed_char_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector bool char"),
vector_boolean_char_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector unsigned short"),
vector_unsigned_short_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector signed short"),
vector_signed_short_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector bool short"),
vector_boolean_short_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector unsigned long"),
vector_unsigned_long_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector signed long"),
vector_signed_long_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector bool long"),
vector_boolean_long_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector float"),
vector_float_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__vector pixel"),
vector_pixel_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 ();
array_domain_type = build_index_type (size_int (200));
char_array_type_node
= build_array_type (char_type_node, array_domain_type);
pascal_string_type_node
= build_array_type (unsigned_char_type_node, array_domain_type);
int_array_type_node
= build_array_type (integer_type_node, array_domain_type);
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) ();
wchar_type_node = get_identifier (flag_short_wchar
? "short unsigned int"
: WCHAR_TYPE);
wchar_type_node = TREE_TYPE (identifier_global_value (wchar_type_node));
wchar_type_size = TYPE_PRECISION (wchar_type_node);
if (c_language == clk_cplusplus)
{
if (TREE_UNSIGNED (wchar_type_node))
wchar_type_node = make_unsigned_type (wchar_type_size);
else
wchar_type_node = make_signed_type (wchar_type_size);
record_builtin_type (RID_WCHAR, "wchar_t", wchar_type_node);
}
else
{
signed_wchar_type_node = signed_type (wchar_type_node);
unsigned_wchar_type_node = unsigned_type (wchar_type_node);
}
wchar_array_type_node
= build_array_type (wchar_type_node, array_domain_type);
wint_type_node =
TREE_TYPE (identifier_global_value (get_identifier (WINT_TYPE)));
intmax_type_node =
TREE_TYPE (identifier_global_value (get_identifier (INTMAX_TYPE)));
uintmax_type_node =
TREE_TYPE (identifier_global_value (get_identifier (UINTMAX_TYPE)));
default_function_type = build_function_type (integer_type_node, NULL_TREE);
ptrdiff_type_node
= TREE_TYPE (identifier_global_value (get_identifier (PTRDIFF_TYPE)));
unsigned_ptrdiff_type_node = unsigned_type (ptrdiff_type_node);
pushdecl (build_decl (TYPE_DECL, get_identifier ("__builtin_va_list"),
va_list_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__builtin_ptrdiff_t"),
ptrdiff_type_node));
pushdecl (build_decl (TYPE_DECL, get_identifier ("__builtin_size_t"),
sizetype));
if (TREE_CODE (va_list_type_node) == ARRAY_TYPE)
{
va_list_arg_type_node = va_list_ref_type_node =
build_pointer_type (TREE_TYPE (va_list_type_node));
}
else
{
va_list_arg_type_node = va_list_type_node;
va_list_ref_type_node = build_reference_type (va_list_type_node);
}
traditional_len_type_node = ((flag_traditional &&
c_language != clk_cplusplus)
? integer_type_node : sizetype);
#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));
#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, \
0); \
\
built_in_decls[(int) ENUM] = decl; \
}
#include "builtins.def"
#undef DEF_BUILTIN
builtin_function_2 (NULL, "_exit", NULL_TREE,
builtin_types[BT_FN_VOID_INT],
0, NOT_BUILT_IN, 0, 1, 1);
builtin_function_2 (NULL, "_Exit", NULL_TREE,
builtin_types[BT_FN_VOID_INT],
0, NOT_BUILT_IN, 0, !flag_isoc99, 1);
builtin_function_2 (NULL, "abort",
NULL_TREE, ((c_language == clk_cplusplus)
? builtin_types[BT_FN_VOID]
: builtin_types[BT_FN_VOID_VAR]),
0, NOT_BUILT_IN, 0, 0, 1);
builtin_function_2 (NULL, "exit",
NULL_TREE, ((c_language == clk_cplusplus)
? builtin_types[BT_FN_VOID_INT]
: builtin_types[BT_FN_VOID_VAR]),
0, NOT_BUILT_IN, 0, 0, 1);
main_identifier_node = get_identifier ("main");
lang_type_promotes_to = simple_type_promotes_to;
if (flag_constant_cfstrings)
create_cfstring_template ();
}
tree
build_va_arg (expr, type)
tree expr, type;
{
return build1 (VA_ARG_EXPR, type, expr);
}
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 *));
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;
}
}
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;
}
static tree
builtin_function_2 (builtin_name, name, builtin_type, type, function_code,
class, library_name_p, nonansi_p, noreturn_p)
const char *builtin_name;
const char *name;
tree builtin_type;
tree type;
int function_code;
enum built_in_class class;
int library_name_p;
int nonansi_p;
int noreturn_p;
{
tree bdecl = NULL_TREE;
tree decl = NULL_TREE;
if (builtin_name != 0)
{
bdecl = builtin_function (builtin_name, builtin_type, function_code,
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 && !builtin_function_disabled_p (name)
&& !(nonansi_p && flag_no_nonansi_builtin))
{
decl = builtin_function (name, type, function_code, class, NULL);
if (nonansi_p)
DECL_BUILT_IN_NONANSI (decl) = 1;
if (noreturn_p)
{
TREE_THIS_VOLATILE (decl) = 1;
TREE_SIDE_EFFECTS (decl) = 1;
}
}
else if (name != 0 && !strcmp(name, "alloca")
&& !builtin_function_disabled_p (name)
&& !(nonansi_p && flag_no_nonansi_builtin))
{
decl = builtin_function (name, type, function_code, class, NULL);
if (nonansi_p)
DECL_BUILT_IN_NONANSI (decl) = 1;
if (noreturn_p)
{
TREE_THIS_VOLATILE (decl) = 1;
TREE_SIDE_EFFECTS (decl) = 1;
}
}
return (bdecl != 0 ? bdecl : decl);
}
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:
return TYPE_PRECISION (t) < TYPE_PRECISION (integer_type_node);
case BOOLEAN_TYPE:
return 1;
default:
return 0;
}
}
tree
simple_type_promotes_to (type)
tree type;
{
if (TYPE_MAIN_VARIANT (type) == float_type_node)
return double_type_node;
if (c_promoting_integer_type_p (type))
{
if (TREE_UNSIGNED (type)
&& (flag_traditional
|| TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node)))
return unsigned_type_node;
return integer_type_node;
}
return NULL_TREE;
}
int
self_promoting_args_p (parms)
tree parms;
{
tree t;
for (t = parms; t; t = TREE_CHAIN (t))
{
tree type = TREE_VALUE (t);
if (TREE_CHAIN (t) == 0 && type != void_type_node)
return 0;
if (type == 0)
return 0;
if (TYPE_MAIN_VARIANT (type) == float_type_node)
return 0;
if (c_promoting_integer_type_p (type))
return 0;
}
return 1;
}
tree
strip_array_types (type)
tree type;
{
while (TREE_CODE (type) == ARRAY_TYPE)
type = TREE_TYPE (type);
return type;
}
tree
expand_tree_builtin (function, params, coerced_params)
tree function, params, coerced_params;
{
enum tree_code code;
if (DECL_BUILT_IN_CLASS (function) != BUILT_IN_NORMAL)
return NULL_TREE;
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);
case BUILT_IN_ISGREATER:
if (TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT)
code = UNLE_EXPR;
else
code = LE_EXPR;
goto unordered_cmp;
case BUILT_IN_ISGREATEREQUAL:
if (TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT)
code = UNLT_EXPR;
else
code = LT_EXPR;
goto unordered_cmp;
case BUILT_IN_ISLESS:
if (TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT)
code = UNGE_EXPR;
else
code = GE_EXPR;
goto unordered_cmp;
case BUILT_IN_ISLESSEQUAL:
if (TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT)
code = UNGT_EXPR;
else
code = GT_EXPR;
goto unordered_cmp;
case BUILT_IN_ISLESSGREATER:
if (TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT)
code = UNEQ_EXPR;
else
code = EQ_EXPR;
goto unordered_cmp;
case BUILT_IN_ISUNORDERED:
if (TARGET_FLOAT_FORMAT != IEEE_FLOAT_FORMAT)
return integer_zero_node;
code = UNORDERED_EXPR;
goto unordered_cmp;
unordered_cmp:
{
tree arg0, arg1;
if (params == 0
|| TREE_CHAIN (params) == 0)
{
error ("too few arguments to function `%s'",
IDENTIFIER_POINTER (DECL_NAME (function)));
return error_mark_node;
}
else if (TREE_CHAIN (TREE_CHAIN (params)) != 0)
{
error ("too many arguments to function `%s'",
IDENTIFIER_POINTER (DECL_NAME (function)));
return error_mark_node;
}
arg0 = TREE_VALUE (params);
arg1 = TREE_VALUE (TREE_CHAIN (params));
arg0 = build_binary_op (code, arg0, arg1, 0);
if (code != UNORDERED_EXPR)
arg0 = build_unary_op (TRUTH_NOT_EXPR, arg0, 0);
return arg0;
}
break;
default:
break;
}
return NULL_TREE;
}
int
statement_code_p (code)
enum tree_code code;
{
switch (code)
{
case CLEANUP_STMT:
case EXPR_STMT:
case COMPOUND_STMT:
case DECL_STMT:
case IF_STMT:
case FOR_STMT:
case WHILE_STMT:
case DO_STMT:
case RETURN_STMT:
case BREAK_STMT:
case CONTINUE_STMT:
case SCOPE_STMT:
case SWITCH_STMT:
case GOTO_STMT:
case LABEL_STMT:
case ASM_STMT:
case FILE_STMT:
case CASE_LABEL:
return 1;
default:
if (lang_statement_code_p)
return (*lang_statement_code_p) (code);
return 0;
}
}
tree
walk_stmt_tree (tp, func, data)
tree *tp;
walk_tree_fn func;
void *data;
{
enum tree_code code;
int walk_subtrees;
tree result;
int i, len;
#define WALK_SUBTREE(NODE) \
do \
{ \
result = walk_stmt_tree (&(NODE), func, data); \
if (result) \
return result; \
} \
while (0)
if (!*tp)
return NULL_TREE;
if (!statement_code_p (TREE_CODE (*tp)))
return NULL_TREE;
walk_subtrees = 1;
result = (*func) (tp, &walk_subtrees, data);
if (result)
return result;
code = TREE_CODE (*tp);
if (!statement_code_p (code))
return NULL_TREE;
if (walk_subtrees)
{
len = TREE_CODE_LENGTH (code);
for (i = 0; i < len; ++i)
WALK_SUBTREE (TREE_OPERAND (*tp, i));
}
return walk_stmt_tree (&TREE_CHAIN (*tp), func, data);
#undef WALK_SUBTREE
}
int
case_compare (k1, k2)
splay_tree_key k1;
splay_tree_key k2;
{
if (!k1)
return k2 ? -1 : 0;
else if (!k2)
return k1 ? 1 : 0;
return tree_int_cst_compare ((tree) k1, (tree) k2);
}
tree
c_add_case_label (cases, cond, low_value, high_value)
splay_tree cases;
tree cond;
tree low_value;
tree high_value;
{
tree type;
tree label;
tree case_label;
splay_tree_node node;
label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
DECL_CONTEXT (label) = current_function_decl;
if (!cond || cond == error_mark_node)
{
if (!cases->root)
add_stmt (build_case_label (NULL_TREE, NULL_TREE, label));
return error_mark_node;
}
if ((low_value && TREE_TYPE (low_value)
&& POINTER_TYPE_P (TREE_TYPE (low_value)))
|| (high_value && TREE_TYPE (high_value)
&& POINTER_TYPE_P (TREE_TYPE (high_value))))
error ("pointers are not permitted as case values");
if (high_value && pedantic)
{
if (c_language == clk_cplusplus)
pedwarn ("ISO C++ forbids range expressions in switch statements");
else
pedwarn ("ISO C forbids range expressions in switch statements");
}
type = TREE_TYPE (cond);
if (low_value)
{
low_value = check_case_value (low_value);
low_value = convert_and_check (type, low_value);
}
if (high_value)
{
high_value = check_case_value (high_value);
high_value = convert_and_check (type, high_value);
}
if (low_value == error_mark_node || high_value == error_mark_node)
{
if (!cases->root)
add_stmt (build_case_label (NULL_TREE, NULL_TREE, label));
return error_mark_node;
}
if (tree_int_cst_equal (low_value, high_value))
high_value = NULL_TREE;
if (low_value && high_value
&& !tree_int_cst_lt (low_value, high_value))
warning ("empty range specified");
node = splay_tree_lookup (cases, (splay_tree_key) low_value);
if (!node && (low_value || high_value))
{
splay_tree_node low_bound;
splay_tree_node high_bound;
low_bound = splay_tree_predecessor (cases,
(splay_tree_key) low_value);
high_bound = splay_tree_successor (cases,
(splay_tree_key) low_value);
if (low_bound
&& CASE_HIGH ((tree) low_bound->value)
&& tree_int_cst_compare (CASE_HIGH ((tree) low_bound->value),
low_value) >= 0)
node = low_bound;
else if (high_bound
&& high_value
&& (tree_int_cst_compare ((tree) high_bound->key,
high_value)
<= 0))
node = high_bound;
}
if (node)
{
tree duplicate = CASE_LABEL_DECL ((tree) node->value);
if (high_value)
{
error ("duplicate (or overlapping) case value");
error_with_decl (duplicate,
"this is the first entry overlapping that value");
}
else if (low_value)
{
error ("duplicate case value") ;
error_with_decl (duplicate, "previously used here");
}
else
{
error ("multiple default labels in one switch");
error_with_decl (duplicate, "this is the first default label");
}
if (!cases->root)
add_stmt (build_case_label (NULL_TREE, NULL_TREE, label));
}
case_label = add_stmt (build_case_label (low_value, high_value, label));
splay_tree_insert (cases,
(splay_tree_key) low_value,
(splay_tree_value) case_label);
return case_label;
}
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;
}
return result;
}
void
mark_stmt_tree (p)
void *p;
{
stmt_tree st = (stmt_tree) p;
ggc_mark_tree (st->x_last_stmt);
ggc_mark_tree (st->x_last_expr_type);
}
void
c_mark_lang_decl (c)
struct c_lang_decl *c ATTRIBUTE_UNUSED;
{
}
void
mark_c_language_function (f)
struct language_function *f;
{
if (!f)
return;
mark_stmt_tree (&f->x_stmt_tree);
ggc_mark_tree (f->x_scope_stmt_stack);
}
rtx
c_expand_expr (exp, target, tmode, modifier)
tree exp;
rtx target;
enum machine_mode tmode;
enum expand_modifier modifier;
{
switch (TREE_CODE (exp))
{
case STMT_EXPR:
{
tree rtl_expr;
rtx result;
bool preserve_result = false;
push_temp_slots ();
rtl_expr = expand_start_stmt_expr (!STMT_EXPR_NO_SCOPE (exp));
if (target != const0_rtx
&& TREE_CODE (STMT_EXPR_STMT (exp)) == COMPOUND_STMT
&& TREE_CODE (COMPOUND_BODY (STMT_EXPR_STMT (exp))) == SCOPE_STMT)
{
tree expr = COMPOUND_BODY (STMT_EXPR_STMT (exp));
tree last = TREE_CHAIN (expr);
while (TREE_CHAIN (last))
{
expr = last;
last = TREE_CHAIN (last);
}
if (TREE_CODE (last) == SCOPE_STMT
&& TREE_CODE (expr) == EXPR_STMT)
{
TREE_ADDRESSABLE (expr) = 1;
preserve_result = true;
}
}
expand_stmt (STMT_EXPR_STMT (exp));
expand_end_stmt_expr (rtl_expr);
result = expand_expr (rtl_expr, target, tmode, modifier);
if (preserve_result && GET_CODE (result) == MEM)
{
if (GET_MODE (result) != BLKmode)
result = copy_to_reg (result);
else
preserve_temp_slots (result);
}
if (STMT_EXPR_NO_SCOPE (exp))
preserve_temp_slots (NULL_RTX);
pop_temp_slots ();
return result;
}
break;
case CALL_EXPR:
{
if (TREE_CODE (TREE_OPERAND (exp, 0)) == ADDR_EXPR
&& (TREE_CODE (TREE_OPERAND (TREE_OPERAND (exp, 0), 0))
== FUNCTION_DECL)
&& DECL_BUILT_IN (TREE_OPERAND (TREE_OPERAND (exp, 0), 0))
&& (DECL_BUILT_IN_CLASS (TREE_OPERAND (TREE_OPERAND (exp, 0), 0))
== BUILT_IN_FRONTEND))
return c_expand_builtin (exp, target, tmode, modifier);
else
abort ();
}
break;
case COMPOUND_LITERAL_EXPR:
{
tree decl = COMPOUND_LITERAL_EXPR_DECL (exp);
emit_local_var (decl);
return expand_expr (decl, target, tmode, modifier);
}
default:
abort ();
}
abort ();
return NULL;
}
int
c_safe_from_p (target, exp)
rtx target;
tree exp;
{
if (TREE_CODE (exp) == DECL_STMT)
{
tree decl = DECL_STMT_DECL (exp);
if (TREE_CODE (decl) == VAR_DECL
&& DECL_INITIAL (decl)
&& !safe_from_p (target, DECL_INITIAL (decl), 0))
return 0;
}
if (statement_code_p (TREE_CODE (exp)) && TREE_CHAIN (exp))
return safe_from_p (target, TREE_CHAIN (exp), 0);
return 1;
}
int
c_unsafe_for_reeval (exp)
tree exp;
{
if (TREE_CODE (exp) == STMT_EXPR
|| TREE_CODE (exp) == COMPOUND_LITERAL_EXPR)
return 2;
return -1;
}
int
c_staticp (exp)
tree exp;
{
if (TREE_CODE (exp) == COMPOUND_LITERAL_EXPR
&& TREE_STATIC (COMPOUND_LITERAL_EXPR_DECL (exp)))
return 1;
return 0;
}
#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
static const char c_tree_code_type[] = {
'x',
#include "c-common.def"
};
#undef DEFTREECODE
#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
static const int c_tree_code_length[] = {
0,
#include "c-common.def"
};
#undef DEFTREECODE
#define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
static const char *const c_tree_code_name[] = {
"@@dummy",
#include "c-common.def"
};
#undef DEFTREECODE
void
add_c_tree_codes ()
{
memcpy (tree_code_type + (int) LAST_AND_UNUSED_TREE_CODE,
c_tree_code_type,
(int) LAST_C_TREE_CODE - (int) LAST_AND_UNUSED_TREE_CODE);
memcpy (tree_code_length + (int) LAST_AND_UNUSED_TREE_CODE,
c_tree_code_length,
(LAST_C_TREE_CODE - (int) LAST_AND_UNUSED_TREE_CODE) * sizeof (int));
memcpy (tree_code_name + (int) LAST_AND_UNUSED_TREE_CODE,
c_tree_code_name,
(LAST_C_TREE_CODE - (int) LAST_AND_UNUSED_TREE_CODE) * sizeof (char *));
lang_unsafe_for_reeval = c_unsafe_for_reeval;
}
#define CALLED_AS_BUILT_IN(NODE) \
(!strncmp (IDENTIFIER_POINTER (DECL_NAME (NODE)), "__builtin_", 10))
static rtx
c_expand_builtin (exp, target, tmode, modifier)
tree exp;
rtx target;
enum machine_mode tmode;
enum expand_modifier modifier;
{
tree type = TREE_TYPE (exp);
tree fndecl = TREE_OPERAND (TREE_OPERAND (exp, 0), 0);
tree arglist = TREE_OPERAND (exp, 1);
enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
enum tree_code code = TREE_CODE (exp);
const int ignore = (target == const0_rtx
|| ((code == NON_LVALUE_EXPR || code == NOP_EXPR
|| code == CONVERT_EXPR || code == REFERENCE_EXPR
|| code == COND_EXPR)
&& TREE_CODE (type) == VOID_TYPE));
if (! optimize && ! CALLED_AS_BUILT_IN (fndecl))
return expand_call (exp, target, ignore);
switch (fcode)
{
case BUILT_IN_PRINTF:
target = c_expand_builtin_printf (arglist, target, tmode,
modifier, ignore, 0);
if (target)
return target;
break;
case BUILT_IN_PRINTF_UNLOCKED:
target = c_expand_builtin_printf (arglist, target, tmode,
modifier, ignore, 1);
if (target)
return target;
break;
case BUILT_IN_FPRINTF:
target = c_expand_builtin_fprintf (arglist, target, tmode,
modifier, ignore, 0);
if (target)
return target;
break;
case BUILT_IN_FPRINTF_UNLOCKED:
target = c_expand_builtin_fprintf (arglist, target, tmode,
modifier, ignore, 1);
if (target)
return target;
break;
default:
error ("built-in function `%s' not currently supported",
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
}
return expand_call (exp, target, ignore);
}
static int
is_valid_printf_arglist (arglist)
tree arglist;
{
const int SAVE_pedantic = pedantic;
int diagnostic_occurred = 0;
tree attrs;
pedantic = 1;
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);
pedantic = SAVE_pedantic;
return ! diagnostic_occurred;
}
static rtx
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 = 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 (!ignore || !fn_putchar || !fn_puts)
return 0;
if (arglist == 0
|| (TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != POINTER_TYPE))
return 0;
if (!is_valid_printf_arglist (arglist))
return 0;
format_arg = TREE_VALUE (arglist);
stripped_string = format_arg;
STRIP_NOPS (stripped_string);
if (stripped_string && TREE_CODE (stripped_string) == ADDR_EXPR)
stripped_string = TREE_OPERAND (stripped_string, 0);
if (TREE_CODE (stripped_string) != STRING_CST)
return 0;
if (strcmp (TREE_STRING_POINTER (stripped_string), "%s\n") == 0)
{
arglist = TREE_CHAIN (arglist);
fn = fn_puts;
}
else if (strcmp (TREE_STRING_POINTER (stripped_string), "%c") == 0)
{
arglist = TREE_CHAIN (arglist);
fn = fn_putchar;
}
else
{
if (strchr (TREE_STRING_POINTER (stripped_string), '%'))
return 0;
if (TREE_STRING_LENGTH (stripped_string) == 2)
{
arglist = build_int_2 (TREE_STRING_POINTER (stripped_string)[0], 0);
arglist = build_tree_list (NULL_TREE, arglist);
fn = fn_putchar;
}
else if (TREE_STRING_LENGTH (stripped_string) > 2
&& TREE_STRING_POINTER (stripped_string)
[TREE_STRING_LENGTH (stripped_string) - 2] == '\n')
{
const int newlen = TREE_STRING_LENGTH (stripped_string) - 1;
char *newstr = (char *) alloca (newlen);
memcpy (newstr, TREE_STRING_POINTER (stripped_string), newlen - 1);
newstr[newlen - 1] = 0;
arglist = combine_strings (build_string (newlen, newstr));
arglist = build_tree_list (NULL_TREE, arglist);
fn = fn_puts;
}
else
return 0;
}
return expand_expr (build_function_call (fn, arglist),
(ignore ? const0_rtx : target),
tmode, modifier);
}
static rtx
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 = 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 (!ignore || !fn_fputc || !fn_fputs)
return 0;
if (arglist == 0
|| (TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != POINTER_TYPE)
|| (TREE_CHAIN (arglist) == 0)
|| (TREE_CODE (TREE_TYPE (TREE_VALUE (TREE_CHAIN (arglist)))) !=
POINTER_TYPE))
return 0;
if (!is_valid_printf_arglist (TREE_CHAIN (arglist)))
return 0;
format_arg = TREE_VALUE (TREE_CHAIN (arglist));
stripped_string = format_arg;
STRIP_NOPS (stripped_string);
if (stripped_string && TREE_CODE (stripped_string) == ADDR_EXPR)
stripped_string = TREE_OPERAND (stripped_string, 0);
if (TREE_CODE (stripped_string) != STRING_CST)
return 0;
if (strcmp (TREE_STRING_POINTER (stripped_string), "%s") == 0)
{
tree newarglist = build_tree_list (NULL_TREE, TREE_VALUE (arglist));
arglist = tree_cons (NULL_TREE,
TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist))),
newarglist);
fn = fn_fputs;
}
else if (strcmp (TREE_STRING_POINTER (stripped_string), "%c") == 0)
{
tree newarglist = build_tree_list (NULL_TREE, TREE_VALUE (arglist));
arglist = tree_cons (NULL_TREE,
TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist))),
newarglist);
fn = fn_fputc;
}
else
{
if (strchr (TREE_STRING_POINTER (stripped_string), '%'))
return 0;
arglist = tree_cons (NULL_TREE, TREE_VALUE (TREE_CHAIN (arglist)),
build_tree_list (NULL_TREE, TREE_VALUE (arglist)));
fn = fn_fputs;
}
return expand_expr (build_function_call (fn, arglist),
(ignore ? const0_rtx : target),
tmode, modifier);
}
tree
boolean_increment (code, arg)
enum tree_code code;
tree arg;
{
tree val;
tree true_res = (c_language == clk_cplusplus
? boolean_true_node
: c_bool_true_node);
arg = stabilize_reference (arg);
switch (code)
{
case PREINCREMENT_EXPR:
val = build (MODIFY_EXPR, TREE_TYPE (arg), arg, true_res);
break;
case POSTINCREMENT_EXPR:
val = build (MODIFY_EXPR, TREE_TYPE (arg), arg, true_res);
arg = save_expr (arg);
val = build (COMPOUND_EXPR, TREE_TYPE (arg), val, arg);
val = build (COMPOUND_EXPR, TREE_TYPE (arg), arg, val);
break;
case PREDECREMENT_EXPR:
val = build (MODIFY_EXPR, TREE_TYPE (arg), arg, invert_truthvalue (arg));
break;
case POSTDECREMENT_EXPR:
val = build (MODIFY_EXPR, TREE_TYPE (arg), arg, invert_truthvalue (arg));
arg = save_expr (arg);
val = build (COMPOUND_EXPR, TREE_TYPE (arg), val, arg);
val = build (COMPOUND_EXPR, TREE_TYPE (arg), arg, val);
break;
default:
abort ();
}
TREE_SIDE_EFFECTS (val) = 1;
return val;
}
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)
#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));
void
c_common_init_options (lang)
enum c_language_kind lang;
{
c_language = lang;
parse_in = cpp_create_reader (lang == clk_c ? CLK_GNUC89 : CLK_GNUCXX);
flag_bounds_check = -1;
if (compiling_objc)
set_index_lang (PB_INDEX_LANG_OBJC);
else
set_index_lang (PB_INDEX_LANG_C);
}
void
c_common_post_options ()
{
cpp_post_options (parse_in);
flag_inline_trees = 1;
if (! flag_instrument_function_entry_exit)
{
if (!flag_no_inline)
flag_no_inline = 1;
if (flag_inline_functions)
{
flag_inline_trees = 2;
flag_inline_functions = 0;
}
}
if (flag_bounds_check == -1)
flag_bounds_check = flag_bounded_pointers;
if (warn_format_y2k && !warn_format)
warning ("-Wformat-y2k ignored without -Wformat");
if (warn_format_extra_args && !warn_format)
warning ("-Wformat-extra-args ignored without -Wformat");
if (warn_format_nonliteral && !warn_format)
warning ("-Wformat-nonliteral ignored without -Wformat");
if (warn_format_security && !warn_format)
warning ("-Wformat-security ignored without -Wformat");
if (warn_missing_format_attribute && !warn_format)
warning ("-Wmissing-format-attribute ignored without -Wformat");
}
const char *
c_common_init (filename)
const char *filename;
{
filename = init_c_lex (filename);
init_pragma ();
if (!c_attrs_initialized)
c_init_attributes ();
return filename;
}
void
c_common_finish ()
{
cpp_finish (parse_in);
errorcount += cpp_errors (parse_in);
}
static void
c_init_attributes ()
{
#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)
#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;
}
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)
#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
}
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");
}
void
warn_about_long_double ()
{
static int warned_about_long_double = 0;
if (warn_long_double
&& ! warned_about_long_double
&& ! in_system_header
&& ! strstr (input_filename, "/System/Library/Frameworks/")
&& ! strstr (input_filename, "/usr/include/"))
{
warning ("use of `long double' type; its size may change in a future release");
warning ("(Long double usage is reported only once for each file.");
warning ("To disable this warning, use -Wno-long-double.)");
warned_about_long_double = 1;
}
}
static tree cfstring_class_reference = NULL_TREE;
static tree cfstring_object_template = NULL_TREE;
static void
create_cfstring_template ()
{
cfstring_class_reference = build_decl
(VAR_DECL,
get_identifier ("__CFConstantStringClassReference"),
build_array_type (integer_type_node, 0));
DECL_EXTERNAL (cfstring_class_reference) = 1;
TREE_PUBLIC (cfstring_class_reference) = 1;
TREE_USED (cfstring_class_reference) = 1;
DECL_ARTIFICIAL (cfstring_class_reference) = 1;
pushdecl (cfstring_class_reference);
rest_of_decl_compilation (cfstring_class_reference, 0, 0, 0);
}
tree
build_cfstring_ascii (str)
tree str;
{
tree initlist, constructor;
int length;
length = TREE_STRING_LENGTH (str) - 1;
initlist = build_tree_list
(NULL_TREE, convert (const_ptr_type_node,
copy_node (build_unary_op
(ADDR_EXPR,
cfstring_class_reference, 0))));
initlist = tree_cons (NULL_TREE, convert (const_ptr_type_node,
build_int_2 (0x000007c8, 0)), initlist);
initlist = tree_cons
(NULL_TREE, convert (const_ptr_type_node,
copy_node (build_unary_op
(ADDR_EXPR, str, 1))), initlist);
initlist = tree_cons (NULL_TREE, convert (const_ptr_type_node,
build_int_2 (length, 0)), initlist);
cfstring_object_template = build_array_type (const_ptr_type_node, 0);
TYPE_ALIGN (cfstring_object_template) = TYPE_ALIGN (const_ptr_type_node);
constructor = build (CONSTRUCTOR, cfstring_object_template,
NULL_TREE, nreverse (initlist));
TREE_CONSTANT (constructor) = 1;
TREE_STATIC (constructor) = 1;
TREE_READONLY (constructor) = 1;
if (c_language == clk_cplusplus)
TREE_LANG_FLAG_4 (constructor) = 1;
return build_c_cast (const_ptr_type_node, copy_node
(build_unary_op (ADDR_EXPR, constructor, 1)));
}
#ifdef PFE
void
pfe_c_common_nodes_and_builtins ()
{
format_attribute_table = c_format_attribute_table;
lang_type_promotes_to = simple_type_promotes_to;
(*targetm.init_builtins) ();
if (flag_constant_cfstrings)
create_cfstring_template ();
}
#endif