/* Language-independent node constructors for parse phase of GNU compiler.
- Copyright (C) 1987, 88, 92-98, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+ 1999, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-
/* This file contains the low level primitives for operating on tree nodes,
including allocation, list operations, interning of identifiers,
construction of data type nodes and statement nodes,
#include "system.h"
#include "flags.h"
#include "tree.h"
+#include "tm_p.h"
#include "function.h"
#include "obstack.h"
#include "toplev.h"
+#include "ggc.h"
+#include "hashtab.h"
+#include "output.h"
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free free
-/* obstack.[ch] explicitly declined to prototype this. */
-extern int _obstack_allocated_p PROTO ((struct obstack *h, GENERIC_PTR obj));
+/* obstack.[ch] explicitly declined to prototype this. */
+extern int _obstack_allocated_p PARAMS ((struct obstack *h, PTR obj));
+
+static void unsave_expr_now_r PARAMS ((tree));
/* Tree nodes of permanent duration are allocated in this obstack.
They are the identifier nodes, and everything outside of
struct obstack maybepermanent_obstack;
-/* This is a list of function_maybepermanent_obstacks for top-level inline
- functions that are compiled in the middle of compiling other functions. */
-
-struct simple_obstack_stack *toplev_inline_obstacks;
-
-/* Former elements of toplev_inline_obstacks that have been recycled. */
-
-struct simple_obstack_stack *extra_inline_obstacks;
-
-/* This is a list of function_maybepermanent_obstacks for inline functions
- nested in the current function that were compiled in the middle of
- compiling other functions. */
-
-struct simple_obstack_stack *inline_obstacks;
-
/* The contents of the current function definition are allocated
in this obstack, and all are freed at the end of the function.
For top-level functions, this is temporary_obstack.
int all_types_permanent;
/* Stack of places to restore the momentary obstack back to. */
-
+
struct momentary_level
{
/* Pointer back to previous such level. */
Used for printing out the tree and error messages. */
#define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
-char *tree_code_name[MAX_TREE_CODES] = {
+const char *tree_code_name[MAX_TREE_CODES] = {
#include "tree.def"
};
#undef DEFTREECODE
all_kinds
} tree_node_kind;
-int tree_node_counts[(int)all_kinds];
-int tree_node_sizes[(int)all_kinds];
+int tree_node_counts[(int) all_kinds];
+int tree_node_sizes[(int) all_kinds];
int id_string_size = 0;
-const char *tree_node_kind_names[] = {
+static const char * const tree_node_kind_names[] = {
"decls",
"types",
"blocks",
/* Unique id for next type created. */
static int next_type_uid = 1;
-/* The language-specific function for alias analysis. If NULL, the
- language does not do any special alias analysis. */
-int (*lang_get_alias_set) PROTO((tree));
-
/* Here is how primitive or already-canonicalized types' hash
codes are made. */
#define TYPE_HASH(TYPE) ((unsigned long) (TYPE) & 0777777)
-static void set_type_quals PROTO((tree, int));
-static void append_random_chars PROTO((char *));
-static void build_real_from_int_cst_1 PROTO((PTR));
-
-extern char *mode_name[];
-
-void gcc_obstack_init ();
+/* Since we cannot rehash a type after it is in the table, we have to
+ keep the hash code. */
-/* If non-null, a language specific helper for unsave_expr_now. */
+struct type_hash
+{
+ unsigned long hash;
+ tree type;
+};
-int (*lang_unsave_expr_now) PROTO((tree));
+/* Initial size of the hash table (rounded to next prime). */
+#define TYPE_HASH_INITIAL_SIZE 1000
+
+/* Now here is the hash table. When recording a type, it is added to
+ the slot whose index is the hash code. Note that the hash table is
+ used for several kinds of types (function types, array types and
+ array index range types, for now). While all these live in the
+ same table, they are completely independent, and the hash code is
+ computed differently for each of these. */
+
+htab_t type_hash_table;
+
+static void build_real_from_int_cst_1 PARAMS ((PTR));
+static void set_type_quals PARAMS ((tree, int));
+static void append_random_chars PARAMS ((char *));
+static void mark_type_hash PARAMS ((void *));
+static int type_hash_eq PARAMS ((const void*, const void*));
+static unsigned int type_hash_hash PARAMS ((const void*));
+static void print_type_hash_statistics PARAMS((void));
+static int mark_hash_entry PARAMS((void **, void *));
+static void finish_vector_type PARAMS((tree));
+
+/* If non-null, these are language-specific helper functions for
+ unsave_expr_now. If present, LANG_UNSAVE is called before its
+ argument (an UNSAVE_EXPR) is to be unsaved, and all other
+ processing in unsave_expr_now is aborted. LANG_UNSAVE_EXPR_NOW is
+ called from unsave_expr_1 for language-specific tree codes. */
+void (*lang_unsave) PARAMS ((tree *));
+void (*lang_unsave_expr_now) PARAMS ((tree));
+
+/* The string used as a placeholder instead of a source file name for
+ built-in tree nodes. The variable, which is dynamically allocated,
+ should be used; the macro is only used to initialize it. */
+
+static char *built_in_filename;
+#define BUILT_IN_FILENAME ("<built-in>")
+\f
+tree global_trees[TI_MAX];
+tree integer_types[itk_none];
\f
/* Init the principal obstacks. */
/* Init the hash table of identifiers. */
bzero ((char *) hash_table, sizeof hash_table);
+ ggc_add_tree_root (hash_table, sizeof hash_table / sizeof (tree));
+
+ /* Initialize the hash table of types. */
+ type_hash_table = htab_create (TYPE_HASH_INITIAL_SIZE, type_hash_hash,
+ type_hash_eq, 0);
+ ggc_add_root (&type_hash_table, 1, sizeof type_hash_table, mark_type_hash);
+ ggc_add_tree_root (global_trees, TI_MAX);
+ ggc_add_tree_root (integer_types, itk_none);
}
void
#define OBSTACK_CHUNK_FREE free
#endif
_obstack_begin (obstack, OBSTACK_CHUNK_SIZE, 0,
- (void *(*) ()) OBSTACK_CHUNK_ALLOC,
- (void (*) ()) OBSTACK_CHUNK_FREE);
+ (void *(*) PARAMS ((long))) OBSTACK_CHUNK_ALLOC,
+ (void (*) PARAMS ((void *))) OBSTACK_CHUNK_FREE);
}
/* Save all variables describing the current status into the structure
compile; if it isn't current_function_decl, we have to play some games. */
void
-save_tree_status (p, context)
+save_tree_status (p)
struct function *p;
- tree context;
{
p->all_types_permanent = all_types_permanent;
p->momentary_stack = momentary_stack;
p->expression_obstack = expression_obstack;
p->saveable_obstack = saveable_obstack;
p->rtl_obstack = rtl_obstack;
- p->inline_obstacks = inline_obstacks;
-
- if (current_function_decl && context == current_function_decl)
- /* Objects that need to be saved in this function can be in the nonsaved
- obstack of the enclosing function since they can't possibly be needed
- once it has returned. */
- function_maybepermanent_obstack = function_obstack;
- else
- {
- /* We're compiling a function which isn't nested in the current
- function. We need to create a new maybepermanent_obstack for this
- function, since it can't go onto any of the existing obstacks. */
- struct simple_obstack_stack **head;
- struct simple_obstack_stack *current;
-
- if (context == NULL_TREE)
- head = &toplev_inline_obstacks;
- else
- {
- struct function *f = find_function_data (context);
- head = &f->inline_obstacks;
- }
-
- if (context == NULL_TREE && extra_inline_obstacks)
- {
- current = extra_inline_obstacks;
- extra_inline_obstacks = current->next;
- }
- else
- {
- current = ((struct simple_obstack_stack *)
- xmalloc (sizeof (struct simple_obstack_stack)));
-
- current->obstack
- = (struct obstack *) xmalloc (sizeof (struct obstack));
- gcc_obstack_init (current->obstack);
- }
-
- function_maybepermanent_obstack = current->obstack;
-
- current->next = *head;
- *head = current;
- }
+ function_maybepermanent_obstack
+ = (struct obstack *) xmalloc (sizeof (struct obstack));
+ gcc_obstack_init (function_maybepermanent_obstack);
maybepermanent_firstobj
= (char *) obstack_finish (function_maybepermanent_obstack);
This is used after a nested function. */
void
-restore_tree_status (p, context)
+restore_tree_status (p)
struct function *p;
- tree context;
{
all_types_permanent = p->all_types_permanent;
momentary_stack = p->momentary_stack;
obstack_free (&momentary_obstack, momentary_function_firstobj);
/* Free saveable storage used by the function just compiled and not
- saved.
-
- CAUTION: This is in function_obstack of the containing function.
- So we must be sure that we never allocate from that obstack during
- the compilation of a nested function if we expect it to survive
- past the nested function's end. */
+ saved. */
obstack_free (function_maybepermanent_obstack, maybepermanent_firstobj);
-
- /* If we were compiling a toplevel function, we can free this space now. */
- if (context == NULL_TREE)
+ if (obstack_empty_p (function_maybepermanent_obstack))
{
- obstack_free (&temporary_obstack, temporary_firstobj);
- obstack_free (&momentary_obstack, momentary_function_firstobj);
+ obstack_free (function_maybepermanent_obstack, NULL);
+ free (function_maybepermanent_obstack);
}
- /* If we were compiling a toplevel function that we don't actually want
- to save anything from, return the obstack to the pool. */
- if (context == NULL_TREE
- && obstack_empty_p (function_maybepermanent_obstack))
- {
- struct simple_obstack_stack *current, **p = &toplev_inline_obstacks;
-
- if ((*p) != NULL)
- {
- while ((*p)->obstack != function_maybepermanent_obstack)
- p = &((*p)->next);
- current = *p;
- *p = current->next;
-
- current->next = extra_inline_obstacks;
- extra_inline_obstacks = current;
- }
- }
+ obstack_free (&temporary_obstack, temporary_firstobj);
+ obstack_free (&momentary_obstack, momentary_function_firstobj);
- obstack_free (function_obstack, 0);
+ obstack_free (function_obstack, NULL);
free (function_obstack);
temporary_firstobj = p->temporary_firstobj;
expression_obstack = p->expression_obstack;
saveable_obstack = p->saveable_obstack;
rtl_obstack = p->rtl_obstack;
- inline_obstacks = p->inline_obstacks;
}
\f
/* Start allocating on the temporary (per function) obstack.
expression_obstack = function_obstack;
rtl_obstack = saveable_obstack = function_maybepermanent_obstack;
momentary_stack = 0;
- inline_obstacks = 0;
}
/* Start allocating on the permanent obstack but don't
push_obstacks (current, saveable)
struct obstack *current, *saveable;
{
- struct obstack_stack *p
- = (struct obstack_stack *) obstack_alloc (&obstack_stack_obstack,
+ struct obstack_stack *p;
+
+ p = (struct obstack_stack *) obstack_alloc (&obstack_stack_obstack,
(sizeof (struct obstack_stack)));
p->current = current_obstack;
void
push_obstacks_nochange ()
{
- struct obstack_stack *p
- = (struct obstack_stack *) obstack_alloc (&obstack_stack_obstack,
+ struct obstack_stack *p;
+
+ p = (struct obstack_stack *) obstack_alloc (&obstack_stack_obstack,
(sizeof (struct obstack_stack)));
p->current = current_obstack;
void
pop_obstacks ()
{
- struct obstack_stack *p = obstack_stack;
+ struct obstack_stack *p;
+
+ p = obstack_stack;
obstack_stack = p->next;
current_obstack = p->current;
}
else
obstack_free (&momentary_obstack, momentary_firstobj);
+
obstack_free (function_maybepermanent_obstack, maybepermanent_firstobj);
obstack_free (&temp_decl_obstack, temp_decl_firstobj);
- /* Free up the maybepermanent_obstacks for any of our nested functions
- which were compiled at a lower level. */
- while (inline_obstacks)
- {
- struct simple_obstack_stack *current = inline_obstacks;
- inline_obstacks = current->next;
- obstack_free (current->obstack, 0);
- free (current->obstack);
- free (current);
- }
-
current_obstack = &permanent_obstack;
expression_obstack = &permanent_obstack;
rtl_obstack = saveable_obstack = &permanent_obstack;
void
init_tree_codes ()
{
-
+ built_in_filename
+ = ggc_alloc_string (BUILT_IN_FILENAME, sizeof (BUILT_IN_FILENAME));
+ ggc_add_string_root (&built_in_filename, 1);
}
/* Return a newly allocated node of code CODE.
Initialize the node's unique id and its TREE_PERMANENT flag.
+ Note that if garbage collection is in use, TREE_PERMANENT will
+ always be zero - we want to eliminate use of TREE_PERMANENT.
For decl and type nodes, some other fields are initialized.
The rest of the node is initialized to zero.
PARM_DECLs of top-level functions do not have this problem. However,
we allocate them where we put the FUNCTION_DECL for languages such as
Ada that need to consult some flags in the PARM_DECLs of the function
- when calling it.
+ when calling it.
See comment in restore_tree_status for why we can't put this
in function_obstack. */
if (code == BIND_EXPR && obstack != &permanent_obstack)
obstack = saveable_obstack;
length = sizeof (struct tree_exp)
- + (tree_code_length[(int) code] - 1) * sizeof (char *);
+ + (TREE_CODE_LENGTH (code) - 1) * sizeof (char *);
break;
case 'c': /* a constant */
#endif
obstack = expression_obstack;
- /* We can't use tree_code_length for INTEGER_CST, since the number of
+ /* We can't use TREE_CODE_LENGTH for INTEGER_CST, since the number of
words is machine-dependent due to varying length of HOST_WIDE_INT,
which might be wider than a pointer (e.g., long long). Similarly
for REAL_CST, since the number of words is machine-dependent due
length = sizeof (struct tree_real_cst);
else
length = sizeof (struct tree_common)
- + tree_code_length[(int) code] * sizeof (char *);
+ + TREE_CODE_LENGTH (code) * sizeof (char *);
break;
case 'x': /* something random, like an identifier. */
kind = x_kind;
#endif
length = sizeof (struct tree_common)
- + tree_code_length[(int) code] * sizeof (char *);
+ + TREE_CODE_LENGTH (code) * sizeof (char *);
/* Identifier nodes are always permanent since they are
unique in a compiler run. */
if (code == IDENTIFIER_NODE) obstack = &permanent_obstack;
abort ();
}
- t = (tree) obstack_alloc (obstack, length);
- bzero ((PTR) t, length);
+ if (ggc_p)
+ t = ggc_alloc_tree (length);
+ else
+ t = (tree) obstack_alloc (obstack, length);
+
+ memset ((PTR) t, 0, length);
#ifdef GATHER_STATISTICS
- tree_node_counts[(int)kind]++;
- tree_node_sizes[(int)kind] += length;
+ tree_node_counts[(int) kind]++;
+ tree_node_sizes[(int) kind] += length;
#endif
TREE_SET_CODE (t, code);
- if (obstack == &permanent_obstack)
- TREE_PERMANENT (t) = 1;
+ TREE_SET_PERMANENT (t);
switch (type)
{
case 'd':
if (code != FUNCTION_DECL)
DECL_ALIGN (t) = 1;
- DECL_IN_SYSTEM_HEADER (t)
- = in_system_header && (obstack == &permanent_obstack);
+ DECL_USER_ALIGN (t) = 0;
+ DECL_IN_SYSTEM_HEADER (t) = in_system_header;
DECL_SOURCE_LINE (t) = lineno;
- DECL_SOURCE_FILE (t) = (input_filename) ? input_filename : "<built-in>";
+ DECL_SOURCE_FILE (t) =
+ (input_filename) ? input_filename : built_in_filename;
DECL_UID (t) = next_decl_uid++;
/* Note that we have not yet computed the alias set for this
declaration. */
case 't':
TYPE_UID (t) = next_type_uid++;
TYPE_ALIGN (t) = 1;
+ TYPE_USER_ALIGN (t) = 0;
TYPE_MAIN_VARIANT (t) = t;
TYPE_OBSTACK (t) = obstack;
TYPE_ATTRIBUTES (t) = NULL_TREE;
case 'c':
TREE_CONSTANT (t) = 1;
break;
+
+ case 'e':
+ switch (code)
+ {
+ case INIT_EXPR:
+ case MODIFY_EXPR:
+ case VA_ARG_EXPR:
+ case RTL_EXPR:
+ case PREDECREMENT_EXPR:
+ case PREINCREMENT_EXPR:
+ case POSTDECREMENT_EXPR:
+ case POSTINCREMENT_EXPR:
+ /* All of these have side-effects, no matter what their
+ operands are. */
+ TREE_SIDE_EFFECTS (t) = 1;
+ break;
+
+ default:
+ break;
+ }
+ break;
}
return t;
}
+
+/* A front-end can reset this to an appropriate function if types need
+ special handling. */
+
+tree (*make_lang_type_fn) PARAMS ((enum tree_code)) = make_node;
+
+/* Return a new type (with the indicated CODE), doing whatever
+ language-specific processing is required. */
+
+tree
+make_lang_type (code)
+ enum tree_code code;
+{
+ return (*make_lang_type_fn) (code);
+}
\f
-/* Return a new node with the same contents as NODE
- except that its TREE_CHAIN is zero and it has a fresh uid. */
+/* Return a new node with the same contents as NODE except that its
+ TREE_CHAIN is zero and it has a fresh uid. Unlike make_node, this
+ function always performs the allocation on the CURRENT_OBSTACK;
+ it's up to the caller to pick the right obstack before calling this
+ function. */
tree
copy_node (node)
case '1': /* a unary arithmetic expression */
case '2': /* a binary arithmetic expression */
length = sizeof (struct tree_exp)
- + (tree_code_length[(int) code] - 1) * sizeof (char *);
+ + (TREE_CODE_LENGTH (code) - 1) * sizeof (char *);
break;
case 'c': /* a constant */
- /* We can't use tree_code_length for INTEGER_CST, since the number of
+ /* We can't use TREE_CODE_LENGTH for INTEGER_CST, since the number of
words is machine-dependent due to varying length of HOST_WIDE_INT,
which might be wider than a pointer (e.g., long long). Similarly
for REAL_CST, since the number of words is machine-dependent due
length = sizeof (struct tree_real_cst);
else
length = (sizeof (struct tree_common)
- + tree_code_length[(int) code] * sizeof (char *));
+ + TREE_CODE_LENGTH (code) * sizeof (char *));
break;
case 'x': /* something random, like an identifier. */
length = sizeof (struct tree_common)
- + tree_code_length[(int) code] * sizeof (char *);
+ + TREE_CODE_LENGTH (code) * sizeof (char *);
if (code == TREE_VEC)
length += (TREE_VEC_LENGTH (node) - 1) * sizeof (char *);
}
- t = (tree) obstack_alloc (current_obstack, length);
+ if (ggc_p)
+ t = ggc_alloc_tree (length);
+ else
+ t = (tree) obstack_alloc (current_obstack, length);
memcpy (t, node, length);
- /* EXPR_WITH_FILE_LOCATION must keep filename info stored in TREE_CHAIN */
- if (TREE_CODE (node) != EXPR_WITH_FILE_LOCATION)
- TREE_CHAIN (t) = 0;
+ TREE_CHAIN (t) = 0;
TREE_ASM_WRITTEN (t) = 0;
if (TREE_CODE_CLASS (code) == 'd')
TYPE_SYMTAB_ADDRESS (t) = 0;
}
- TREE_PERMANENT (t) = (current_obstack == &permanent_obstack);
+ TREE_SET_PERMANENT (t);
return t;
}
/* Decide how much of that length to hash on */
hash_len = len;
- if (warn_id_clash && (unsigned)len > id_clash_len)
+ if (warn_id_clash && len > id_clash_len)
hash_len = id_clash_len;
/* Compute hash code */
hi &= (1 << HASHBITS) - 1;
hi %= MAX_HASH_TABLE;
-
- /* Search table for identifier */
+
+ /* Search table for identifier. */
for (idp = hash_table[hi]; idp; idp = TREE_CHAIN (idp))
if (IDENTIFIER_LENGTH (idp) == len
&& IDENTIFIER_POINTER (idp)[0] == text[0]
&& !bcmp (IDENTIFIER_POINTER (idp), text, len))
- return idp; /* <-- return if found */
+ /* Return if found. */
+ return idp;
- /* Not found; optionally warn about a similar identifier */
- if (warn_id_clash && do_identifier_warnings && (unsigned)len >= id_clash_len)
+ /* Not found; optionally warn about a similar identifier. */
+ if (warn_id_clash && do_identifier_warnings && len >= id_clash_len)
for (idp = hash_table[hi]; idp; idp = TREE_CHAIN (idp))
if (!strncmp (IDENTIFIER_POINTER (idp), text, id_clash_len))
{
break;
}
- if (tree_code_length[(int) IDENTIFIER_NODE] < 0)
+ if (TREE_CODE_LENGTH (IDENTIFIER_NODE) < 0)
abort (); /* set_identifier_size hasn't been called. */
/* Not found, create one, add to chain */
id_string_size += len;
#endif
- IDENTIFIER_POINTER (idp) = obstack_copy0 (&permanent_obstack, text, len);
+ if (ggc_p)
+ IDENTIFIER_POINTER (idp) = ggc_alloc_string (text, len);
+ else
+ IDENTIFIER_POINTER (idp) = obstack_copy0 (&permanent_obstack, text, len);
TREE_CHAIN (idp) = hash_table[hi];
hash_table[hi] = idp;
/* Decide how much of that length to hash on */
hash_len = len;
- if (warn_id_clash && (unsigned)len > id_clash_len)
+ if (warn_id_clash && len > id_clash_len)
hash_len = id_clash_len;
/* Compute hash code */
hi &= (1 << HASHBITS) - 1;
hi %= MAX_HASH_TABLE;
-
- /* Search table for identifier */
+
+ /* Search table for identifier. */
for (idp = hash_table[hi]; idp; idp = TREE_CHAIN (idp))
if (IDENTIFIER_LENGTH (idp) == len
&& IDENTIFIER_POINTER (idp)[0] == text[0]
\f
/* Return a newly constructed INTEGER_CST node whose constant value
is specified by the two ints LOW and HI.
- The TREE_TYPE is set to `int'.
+ The TREE_TYPE is set to `int'.
This function should be used via the `build_int_2' macro. */
tree
build_int_2_wide (low, hi)
- HOST_WIDE_INT low, hi;
+ unsigned HOST_WIDE_INT low;
+ HOST_WIDE_INT hi;
{
register tree t = make_node (INTEGER_CST);
+
TREE_INT_CST_LOW (t) = low;
TREE_INT_CST_HIGH (t) = hi;
TREE_TYPE (t) = integer_type_node;
REAL_VALUE_TYPE
real_value_from_int_cst (type, i)
- tree type, i;
+ tree type ATTRIBUTE_UNUSED, i;
{
REAL_VALUE_TYPE d;
#ifdef REAL_ARITHMETIC
+ /* Clear all bits of the real value type so that we can later do
+ bitwise comparisons to see if two values are the same. */
+ bzero ((char *) &d, sizeof d);
+
if (! TREE_UNSIGNED (TREE_TYPE (i)))
REAL_VALUE_FROM_INT (d, TREE_INT_CST_LOW (i), TREE_INT_CST_HIGH (i),
TYPE_MODE (type));
{
REAL_VALUE_TYPE e;
- d = (double) (~ TREE_INT_CST_HIGH (i));
+ d = (double) (~TREE_INT_CST_HIGH (i));
e = ((double) ((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT / 2))
* (double) ((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT / 2)));
d *= e;
- e = (double) (unsigned HOST_WIDE_INT) (~ TREE_INT_CST_LOW (i));
+ e = (double) (~TREE_INT_CST_LOW (i));
d += e;
d = (- d - 1.0);
}
d = (double) (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (i);
e = ((double) ((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT / 2))
- * (double) ((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT / 2)));
+ * (double) ((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT / 2)));
d *= e;
- e = (double) (unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (i);
+ e = (double) TREE_INT_CST_LOW (i);
d += e;
}
#endif /* not REAL_ARITHMETIC */
return d;
}
+/* Args to pass to and from build_real_from_int_cst_1. */
+
struct brfic_args
{
- /* Input */
- tree type, i;
- /* Output */
- REAL_VALUE_TYPE d;
+ tree type; /* Input: type to conver to. */
+ tree i; /* Input: operand to convert. */
+ REAL_VALUE_TYPE d; /* Output: floating point value. */
};
+/* Convert an integer to a floating point value while protected by a floating
+ point exception handler. */
+
static void
build_real_from_int_cst_1 (data)
- PTR data;
+ PTR data;
{
- struct brfic_args * args = (struct brfic_args *) data;
-
+ struct brfic_args *args = (struct brfic_args *) data;
+
#ifdef REAL_ARITHMETIC
args->d = real_value_from_int_cst (args->type, args->i);
#else
- args->d =
- REAL_VALUE_TRUNCATE (TYPE_MODE (args->type),
- real_value_from_int_cst (args->type, args->i));
+ args->d
+ = REAL_VALUE_TRUNCATE (TYPE_MODE (args->type),
+ real_value_from_int_cst (args->type, args->i));
#endif
}
-/* This function can't be implemented if we can't do arithmetic
- on the float representation. */
+/* Given a tree representing an integer constant I, return a tree
+ representing the same value as a floating-point constant of type TYPE.
+ We cannot perform this operation if there is no way of doing arithmetic
+ on floating-point values. */
tree
build_real_from_int_cst (type, i)
args.i = i;
if (do_float_handler (build_real_from_int_cst_1, (PTR) &args))
- {
- /* Receive output from build_real_from_int_cst_1() */
- d = args.d;
- }
+ /* Receive output from build_real_from_int_cst_1() */
+ d = args.d;
else
{
/* We got an exception from build_real_from_int_cst_1() */
d = dconst0;
overflow = 1;
}
-
+
/* Check for valid float value for this type on this target machine. */
#ifdef CHECK_FLOAT_VALUE
deferring constant output in varasm.c. */
register tree s = make_node (STRING_CST);
+
TREE_STRING_LENGTH (s) = len;
- TREE_STRING_POINTER (s) = obstack_copy0 (saveable_obstack, str, len);
+ if (ggc_p)
+ TREE_STRING_POINTER (s) = ggc_alloc_string (str, len);
+ else
+ TREE_STRING_POINTER (s) = obstack_copy0 (saveable_obstack, str, len);
+
return s;
}
tree_node_sizes[(int)vec_kind] += length;
#endif
- t = (tree) obstack_alloc (obstack, length);
- bzero ((PTR) t, length);
+ if (ggc_p)
+ t = ggc_alloc_tree (length);
+ else
+ t = (tree) obstack_alloc (obstack, length);
+ memset ((PTR) t, 0, length);
TREE_SET_CODE (t, TREE_VEC);
TREE_VEC_LENGTH (t) = len;
- if (obstack == &permanent_obstack)
- TREE_PERMANENT (t) = 1;
+ TREE_SET_PERMANENT (t);
return t;
}
uns = TREE_UNSIGNED (TREE_TYPE (expr));
if (!uns)
- return TREE_INT_CST_LOW (expr) == -1 && TREE_INT_CST_HIGH (expr) == -1;
+ return (TREE_INT_CST_LOW (expr) == ~(unsigned HOST_WIDE_INT) 0
+ && TREE_INT_CST_HIGH (expr) == -1);
/* Note that using TYPE_PRECISION here is wrong. We care about the
actual bits, not the (arbitrary) range of the type. */
prec = GET_MODE_BITSIZE (TYPE_MODE (TREE_TYPE (expr)));
if (prec >= HOST_BITS_PER_WIDE_INT)
{
- int high_value, shift_amount;
+ HOST_WIDE_INT high_value;
+ int shift_amount;
shift_amount = prec - HOST_BITS_PER_WIDE_INT;
else
high_value = ((HOST_WIDE_INT) 1 << shift_amount) - 1;
- return TREE_INT_CST_LOW (expr) == -1
- && TREE_INT_CST_HIGH (expr) == high_value;
+ return (TREE_INT_CST_LOW (expr) == ~(unsigned HOST_WIDE_INT) 0
+ && TREE_INT_CST_HIGH (expr) == high_value);
}
else
- return TREE_INT_CST_LOW (expr) == ((HOST_WIDE_INT) 1 << prec) - 1;
+ return TREE_INT_CST_LOW (expr) == ((unsigned HOST_WIDE_INT) 1 << prec) - 1;
}
/* Return 1 if EXPR is an integer constant that is a power of 2 (i.e., has only
}
return (high != 0 ? HOST_BITS_PER_WIDE_INT + exact_log2 (high)
- : exact_log2 (low));
+ : exact_log2 (low));
+}
+
+/* Similar, but return the largest integer Y such that 2 ** Y is less
+ than or equal to EXPR. */
+
+int
+tree_floor_log2 (expr)
+ tree expr;
+{
+ int prec;
+ HOST_WIDE_INT high, low;
+
+ STRIP_NOPS (expr);
+
+ if (TREE_CODE (expr) == COMPLEX_CST)
+ return tree_log2 (TREE_REALPART (expr));
+
+ prec = (POINTER_TYPE_P (TREE_TYPE (expr))
+ ? POINTER_SIZE : TYPE_PRECISION (TREE_TYPE (expr)));
+
+ high = TREE_INT_CST_HIGH (expr);
+ low = TREE_INT_CST_LOW (expr);
+
+ /* First clear all bits that are beyond the type's precision in case
+ we've been sign extended. Ignore if type's precision hasn't been set
+ since what we are doing is setting it. */
+
+ if (prec == 2 * HOST_BITS_PER_WIDE_INT || prec == 0)
+ ;
+ else if (prec > HOST_BITS_PER_WIDE_INT)
+ high &= ~((HOST_WIDE_INT) (-1) << (prec - HOST_BITS_PER_WIDE_INT));
+ else
+ {
+ high = 0;
+ if (prec < HOST_BITS_PER_WIDE_INT)
+ low &= ~((HOST_WIDE_INT) (-1) << prec);
+ }
+
+ return (high != 0 ? HOST_BITS_PER_WIDE_INT + floor_log2 (high)
+ : floor_log2 (low));
}
/* Return 1 if EXPR is the real constant zero. */
}
/* Nonzero if EXP is a constant or a cast of a constant. */
-
+
int
really_constant_p (exp)
tree exp;
}
/* Return nonzero if ELEM is equal to TREE_VALUE (CHAIN) for any piece of
- chain CHAIN. */
-/* ??? This function was added for machine specific attributes but is no
- longer used. It could be deleted if we could confirm all front ends
- don't use it. */
+ chain CHAIN. This and the next function are currently unused, but
+ are retained for completeness. */
int
chain_member_value (elem, chain)
/* Return nonzero if ELEM is equal to TREE_PURPOSE (CHAIN)
for any piece of chain CHAIN. */
-/* ??? This function was added for machine specific attributes but is no
- longer used. It could be deleted if we could confirm all front ends
- don't use it. */
int
chain_member_purpose (elem, chain)
return len;
}
+/* Returns the number of FIELD_DECLs in TYPE. */
+
+int
+fields_length (type)
+ tree type;
+{
+ tree t = TYPE_FIELDS (type);
+ int count = 0;
+
+ for (; t; t = TREE_CHAIN (t))
+ if (TREE_CODE (t) == FIELD_DECL)
+ ++count;
+
+ return count;
+}
+
/* Concatenate two chains of nodes (chained through TREE_CHAIN)
by modifying the last node in chain 1 to point to chain 2.
This is the Lisp primitive `nconc'. */
if (op1)
{
register tree t1;
-#ifdef ENABLE_CHECKING
+#ifdef ENABLE_TREE_CHECKING
register tree t2;
#endif
for (t1 = op1; TREE_CHAIN (t1); t1 = TREE_CHAIN (t1))
;
TREE_CHAIN (t1) = op2;
-#ifdef ENABLE_CHECKING
+#ifdef ENABLE_TREE_CHECKING
for (t2 = op2; t2; t2 = TREE_CHAIN (t2))
if (t2 == t1)
abort (); /* Circularity created. */
#endif
return op1;
}
- else return op2;
+ else
+ return op2;
}
/* Return the last node in a chain of nodes (chained through TREE_CHAIN). */
{
register tree node;
register struct obstack *ambient_obstack = current_obstack;
+
current_obstack = &temp_decl_obstack;
node = build_tree_list (parm, value);
current_obstack = ambient_obstack;
{
register tree node;
register struct obstack *ambient_obstack = current_obstack;
+
current_obstack = expression_obstack;
node = build_tree_list (parm, value);
current_obstack = ambient_obstack;
tree_cons (purpose, value, chain)
tree purpose, value, chain;
{
-#if 0
- register tree node = make_node (TREE_LIST);
-#else
- register int i;
- register tree node = (tree) obstack_alloc (current_obstack, sizeof (struct tree_list));
+ register tree node;
+
+ if (ggc_p)
+ node = ggc_alloc_tree (sizeof (struct tree_list));
+ else
+ node = (tree) obstack_alloc (current_obstack, sizeof (struct tree_list));
+
+ memset (node, 0, sizeof (struct tree_common));
+
#ifdef GATHER_STATISTICS
- tree_node_counts[(int)x_kind]++;
- tree_node_sizes[(int)x_kind] += sizeof (struct tree_list);
+ tree_node_counts[(int) x_kind]++;
+ tree_node_sizes[(int) x_kind] += sizeof (struct tree_list);
#endif
- for (i = (sizeof (struct tree_common) / sizeof (int)) - 1; i >= 0; i--)
- ((int *) node)[i] = 0;
-
TREE_SET_CODE (node, TREE_LIST);
- if (current_obstack == &permanent_obstack)
- TREE_PERMANENT (node) = 1;
-#endif
+ TREE_SET_PERMANENT (node);
TREE_CHAIN (node) = chain;
TREE_PURPOSE (node) = purpose;
{
register tree node;
register struct obstack *ambient_obstack = current_obstack;
+
current_obstack = &temp_decl_obstack;
node = tree_cons (purpose, value, chain);
current_obstack = ambient_obstack;
{
register tree node;
register struct obstack *ambient_obstack = current_obstack;
+
current_obstack = expression_obstack;
node = tree_cons (purpose, value, chain);
current_obstack = ambient_obstack;
{
register tree node;
register struct obstack *ambient_obstack = current_obstack;
- current_obstack = &permanent_obstack;
+ current_obstack = &permanent_obstack;
node = tree_cons (purpose, value, chain);
current_obstack = ambient_obstack;
return node;
{
register tree node;
register struct obstack *ambient_obstack = current_obstack;
- current_obstack = &temporary_obstack;
+ current_obstack = &temporary_obstack;
node = tree_cons (purpose, value, chain);
current_obstack = ambient_obstack;
return node;
{
register tree node;
register struct obstack *ambient_obstack = current_obstack;
- current_obstack = saveable_obstack;
+ current_obstack = saveable_obstack;
node = tree_cons (purpose, value, chain);
current_obstack = ambient_obstack;
return node;
type = TYPE_MAIN_VARIANT (type);
t = TYPE_SIZE_UNIT (type);
+
if (t == 0)
{
incomplete_type_error (NULL_TREE, type);
- return integer_zero_node;
+ return size_zero_node;
}
+
if (TREE_CODE (t) == INTEGER_CST)
force_fit_type (t, 0);
t = TYPE_SIZE_UNIT (type);
if (t == 0
|| TREE_CODE (t) != INTEGER_CST
- || TREE_INT_CST_HIGH (t) != 0)
+ || TREE_OVERFLOW (t)
+ || TREE_INT_CST_HIGH (t) != 0
+ /* If the result would appear negative, it's too big to represent. */
+ || (HOST_WIDE_INT) TREE_INT_CST_LOW (t) < 0)
return -1;
return TREE_INT_CST_LOW (t);
}
\f
-/* Return, as a tree node, the number of elements for TYPE (which is an
- ARRAY_TYPE) minus one. This counts only elements of the top array.
+/* Return the bit position of FIELD, in bits from the start of the record.
+ This is a tree of type bitsizetype. */
+
+tree
+bit_position (field)
+ tree field;
+{
+
+ return bit_from_pos (DECL_FIELD_OFFSET (field),
+ DECL_FIELD_BIT_OFFSET (field));
+}
+
+/* Likewise, but return as an integer. Abort if it cannot be represented
+ in that way (since it could be a signed value, we don't have the option
+ of returning -1 like int_size_in_byte can. */
+
+HOST_WIDE_INT
+int_bit_position (field)
+ tree field;
+{
+ return tree_low_cst (bit_position (field), 0);
+}
+\f
+/* Return the byte position of FIELD, in bytes from the start of the record.
+ This is a tree of type sizetype. */
+
+tree
+byte_position (field)
+ tree field;
+{
+ return byte_from_pos (DECL_FIELD_OFFSET (field),
+ DECL_FIELD_BIT_OFFSET (field));
+}
+
+/* Likewise, but return as an integer. Abort if it cannot be represented
+ in that way (since it could be a signed value, we don't have the option
+ of returning -1 like int_size_in_byte can. */
+
+HOST_WIDE_INT
+int_byte_position (field)
+ tree field;
+{
+ return tree_low_cst (byte_position (field), 0);
+}
+\f
+/* Return the strictest alignment, in bits, that T is known to have. */
+
+unsigned int
+expr_align (t)
+ tree t;
+{
+ unsigned int align0, align1;
+
+ switch (TREE_CODE (t))
+ {
+ case NOP_EXPR: case CONVERT_EXPR: case NON_LVALUE_EXPR:
+ /* If we have conversions, we know that the alignment of the
+ object must meet each of the alignments of the types. */
+ align0 = expr_align (TREE_OPERAND (t, 0));
+ align1 = TYPE_ALIGN (TREE_TYPE (t));
+ return MAX (align0, align1);
+
+ case SAVE_EXPR: case COMPOUND_EXPR: case MODIFY_EXPR:
+ case INIT_EXPR: case TARGET_EXPR: case WITH_CLEANUP_EXPR:
+ case WITH_RECORD_EXPR: case CLEANUP_POINT_EXPR: case UNSAVE_EXPR:
+ /* These don't change the alignment of an object. */
+ return expr_align (TREE_OPERAND (t, 0));
+
+ case COND_EXPR:
+ /* The best we can do is say that the alignment is the least aligned
+ of the two arms. */
+ align0 = expr_align (TREE_OPERAND (t, 1));
+ align1 = expr_align (TREE_OPERAND (t, 2));
+ return MIN (align0, align1);
+
+ case LABEL_DECL: case CONST_DECL:
+ case VAR_DECL: case PARM_DECL: case RESULT_DECL:
+ if (DECL_ALIGN (t) != 0)
+ return DECL_ALIGN (t);
+ break;
+
+ case FUNCTION_DECL:
+ return FUNCTION_BOUNDARY;
+
+ default:
+ break;
+ }
- Don't let any SAVE_EXPRs escape; if we are called as part of a cleanup
- action, they would get unsaved. */
+ /* Otherwise take the alignment from that of the type. */
+ return TYPE_ALIGN (TREE_TYPE (t));
+}
+\f
+/* Return, as a tree node, the number of elements for TYPE (which is an
+ ARRAY_TYPE) minus one. This counts only elements of the top array. */
tree
array_type_nelts (type)
min = TYPE_MIN_VALUE (index_type);
max = TYPE_MAX_VALUE (index_type);
- if (! TREE_CONSTANT (min))
- {
- STRIP_NOPS (min);
- if (TREE_CODE (min) == SAVE_EXPR)
- min = build (RTL_EXPR, TREE_TYPE (TYPE_MIN_VALUE (index_type)), 0,
- SAVE_EXPR_RTL (min));
- else
- min = TYPE_MIN_VALUE (index_type);
- }
-
- if (! TREE_CONSTANT (max))
- {
- STRIP_NOPS (max);
- if (TREE_CODE (max) == SAVE_EXPR)
- max = build (RTL_EXPR, TREE_TYPE (TYPE_MAX_VALUE (index_type)), 0,
- SAVE_EXPR_RTL (max));
- else
- max = TYPE_MAX_VALUE (index_type);
- }
-
return (integer_zerop (min)
? max
: fold (build (MINUS_EXPR, TREE_TYPE (max), max, min)));
case FUNCTION_DECL:
/* Nested functions aren't static, since taking their address
involves a trampoline. */
- return (decl_function_context (arg) == 0 || DECL_NO_STATIC_CHAIN (arg))
- && ! DECL_NON_ADDR_CONST_P (arg);
+ return (decl_function_context (arg) == 0 || DECL_NO_STATIC_CHAIN (arg))
+ && ! DECL_NON_ADDR_CONST_P (arg);
case VAR_DECL:
return (TREE_STATIC (arg) || DECL_EXTERNAL (arg))
- && ! DECL_NON_ADDR_CONST_P (arg);
+ && ! DECL_NON_ADDR_CONST_P (arg);
case CONSTRUCTOR:
return TREE_STATIC (arg);
+ case LABEL_DECL:
case STRING_CST:
return 1;
/* If the tree evaluates to a constant, then we don't want to hide that
fact (i.e. this allows further folding, and direct checks for constants).
However, a read-only object that has side effects cannot be bypassed.
- Since it is no problem to reevaluate literals, we just return the
+ Since it is no problem to reevaluate literals, we just return the
literal node. */
if (TREE_CONSTANT (t) || (TREE_READONLY (t) && ! TREE_SIDE_EFFECTS (t))
case METHOD_CALL_EXPR:
return 3;
default:
- return tree_code_length [(int) code];
+ return TREE_CODE_LENGTH (code);
}
}
-/* Modify a tree in place so that all the evaluate only once things
- are cleared out. Return the EXPR given.
-
- LANG_UNSAVE_EXPR_NOW, if set, is a pointer to a function to handle
- language specific nodes.
-*/
+/* Perform any modifications to EXPR required when it is unsaved. Does
+ not recurse into EXPR's subtrees. */
-tree
-unsave_expr_now (expr)
+void
+unsave_expr_1 (expr)
tree expr;
{
- enum tree_code code;
- register int i;
- int first_rtl;
-
- if (expr == NULL_TREE)
- return expr;
-
- code = TREE_CODE (expr);
- first_rtl = first_rtl_op (code);
- switch (code)
+ switch (TREE_CODE (expr))
{
case SAVE_EXPR:
- SAVE_EXPR_RTL (expr) = 0;
+ if (! SAVE_EXPR_PERSISTENT_P (expr))
+ SAVE_EXPR_RTL (expr) = 0;
break;
case TARGET_EXPR:
+ /* Don't mess with a TARGET_EXPR that hasn't been expanded.
+ It's OK for this to happen if it was part of a subtree that
+ isn't immediately expanded, such as operand 2 of another
+ TARGET_EXPR. */
+ if (TREE_OPERAND (expr, 1))
+ break;
+
TREE_OPERAND (expr, 1) = TREE_OPERAND (expr, 3);
TREE_OPERAND (expr, 3) = NULL_TREE;
break;
-
+
case RTL_EXPR:
/* I don't yet know how to emit a sequence multiple times. */
if (RTL_EXPR_SEQUENCE (expr) != 0)
case CALL_EXPR:
CALL_EXPR_RTL (expr) = 0;
- if (TREE_OPERAND (expr, 1)
- && TREE_CODE (TREE_OPERAND (expr, 1)) == TREE_LIST)
- {
- tree exp = TREE_OPERAND (expr, 1);
- while (exp)
- {
- unsave_expr_now (TREE_VALUE (exp));
- exp = TREE_CHAIN (exp);
- }
- }
break;
default:
- if (lang_unsave_expr_now)
+ if (lang_unsave_expr_now != 0)
(*lang_unsave_expr_now) (expr);
break;
}
+}
+
+/* Helper function for unsave_expr_now. */
+
+static void
+unsave_expr_now_r (expr)
+ tree expr;
+{
+ enum tree_code code;
+
+ /* There's nothing to do for NULL_TREE. */
+ if (expr == 0)
+ return;
+ unsave_expr_1 (expr);
+
+ code = TREE_CODE (expr);
switch (TREE_CODE_CLASS (code))
{
case 'c': /* a constant */
case 't': /* a type node */
- case 'x': /* something random, like an identifier or an ERROR_MARK. */
case 'd': /* A decl node */
case 'b': /* A block node */
- return expr;
+ break;
+
+ case 'x': /* miscellaneous: e.g., identifier, TREE_LIST or ERROR_MARK. */
+ if (code == TREE_LIST)
+ {
+ unsave_expr_now_r (TREE_VALUE (expr));
+ unsave_expr_now_r (TREE_CHAIN (expr));
+ }
+ break;
case 'e': /* an expression */
case 'r': /* a reference */
case '<': /* a comparison expression */
case '2': /* a binary arithmetic expression */
case '1': /* a unary arithmetic expression */
- for (i = first_rtl - 1; i >= 0; i--)
- unsave_expr_now (TREE_OPERAND (expr, i));
- return expr;
+ {
+ int i;
+
+ for (i = first_rtl_op (code) - 1; i >= 0; i--)
+ unsave_expr_now_r (TREE_OPERAND (expr, i));
+ }
+ break;
default:
abort ();
}
}
-\f
-/* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size
- or offset that depends on a field within a record. */
-int
-contains_placeholder_p (exp)
- tree exp;
-{
- register enum tree_code code = TREE_CODE (exp);
+/* Modify a tree in place so that all the evaluate only once things
+ are cleared out. Return the EXPR given. */
+
+tree
+unsave_expr_now (expr)
+ tree expr;
+{
+ if (lang_unsave!= 0)
+ (*lang_unsave) (&expr);
+ else
+ unsave_expr_now_r (expr);
+
+ return expr;
+}
+
+/* Return 0 if it is safe to evaluate EXPR multiple times,
+ return 1 if it is safe if EXPR is unsaved afterward, or
+ return 2 if it is completely unsafe.
+
+ This assumes that CALL_EXPRs and TARGET_EXPRs are never replicated in
+ an expression tree, so that it safe to unsave them and the surrounding
+ context will be correct.
+
+ SAVE_EXPRs basically *only* appear replicated in an expression tree,
+ occasionally across the whole of a function. It is therefore only
+ safe to unsave a SAVE_EXPR if you know that all occurrences appear
+ below the UNSAVE_EXPR.
+
+ RTL_EXPRs consume their rtl during evaluation. It is therefore
+ never possible to unsave them. */
+
+int
+unsafe_for_reeval (expr)
+ tree expr;
+{
+ int unsafeness = 0;
+ enum tree_code code;
+ int i, tmp;
+ tree exp;
+ int first_rtl;
+
+ if (expr == NULL_TREE)
+ return 1;
+
+ code = TREE_CODE (expr);
+ first_rtl = first_rtl_op (code);
+
+ switch (code)
+ {
+ case SAVE_EXPR:
+ case RTL_EXPR:
+ return 2;
+
+ case TREE_LIST:
+ for (exp = expr; exp != 0; exp = TREE_CHAIN (exp))
+ {
+ tmp = unsafe_for_reeval (TREE_VALUE (exp));
+ unsafeness = MAX (tmp, unsafeness);
+ }
+
+ return unsafeness;
+
+ case CALL_EXPR:
+ tmp = unsafe_for_reeval (TREE_OPERAND (expr, 1));
+ return MAX (tmp, 1);
+
+ case TARGET_EXPR:
+ unsafeness = 1;
+ break;
+
+ default:
+ /* ??? Add a lang hook if it becomes necessary. */
+ break;
+ }
+
+ switch (TREE_CODE_CLASS (code))
+ {
+ case 'c': /* a constant */
+ case 't': /* a type node */
+ case 'x': /* something random, like an identifier or an ERROR_MARK. */
+ case 'd': /* A decl node */
+ case 'b': /* A block node */
+ return 0;
+
+ case 'e': /* an expression */
+ case 'r': /* a reference */
+ case 's': /* an expression with side effects */
+ case '<': /* a comparison expression */
+ case '2': /* a binary arithmetic expression */
+ case '1': /* a unary arithmetic expression */
+ for (i = first_rtl - 1; i >= 0; i--)
+ {
+ tmp = unsafe_for_reeval (TREE_OPERAND (expr, i));
+ unsafeness = MAX (tmp, unsafeness);
+ }
+
+ return unsafeness;
+
+ default:
+ return 2;
+ }
+}
+\f
+/* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size
+ or offset that depends on a field within a record. */
+
+int
+contains_placeholder_p (exp)
+ tree exp;
+{
+ register enum tree_code code = TREE_CODE (exp);
int result;
/* If we have a WITH_RECORD_EXPR, it "cancels" any PLACEHOLDER_EXPR
|| (TREE_CHAIN (exp) != 0
&& contains_placeholder_p (TREE_CHAIN (exp))));
break;
-
+
case '1':
case '2': case '<':
case 'e':
switch (code)
{
case COMPOUND_EXPR:
- /* Ignoring the first operand isn't quite right, but works best. */
+ /* Ignoring the first operand isn't quite right, but works best. */
return contains_placeholder_p (TREE_OPERAND (exp, 1));
case RTL_EXPR:
break;
}
- switch (tree_code_length[(int) code])
+ switch (TREE_CODE_LENGTH (code))
{
case 1:
return contains_placeholder_p (TREE_OPERAND (exp, 0));
case '2':
case '<':
case 'e':
- switch (tree_code_length[(int) code])
+ switch (TREE_CODE_LENGTH (code))
{
case 1:
op0 = substitute_in_expr (TREE_OPERAND (exp, 0), f, r);
if (op0 == TREE_OPERAND (exp, 0))
return exp;
-
+
new = fold (build1 (code, TREE_TYPE (exp), op0));
break;
&& TREE_OPERAND (exp, 1) == f)
return r;
- /* If this expression hasn't been completed let, leave it
+ /* If this expression hasn't been completed let, leave it
alone. */
if (TREE_CODE (inner) == PLACEHOLDER_EXPR
&& TREE_TYPE (inner) == 0)
abort ();
}
break;
-
+
default:
abort ();
}
ref)));
break;
-
/* If arg isn't a kind of lvalue we recognize, make no change.
Caller should recognize the error for an invalid lvalue. */
default:
TREE_READONLY (result) = TREE_READONLY (ref);
TREE_SIDE_EFFECTS (result) = TREE_SIDE_EFFECTS (ref);
TREE_THIS_VOLATILE (result) = TREE_THIS_VOLATILE (ref);
- TREE_RAISES (result) = TREE_RAISES (ref);
return result;
}
/* Constants need no processing. In fact, we should never reach
here. */
return e;
-
+
case '2':
/* Division is slow and tends to be compiled with jumps,
especially the division by powers of 2 that is often
default:
abort ();
}
-
+
TREE_TYPE (result) = TREE_TYPE (e);
TREE_READONLY (result) = TREE_READONLY (e);
TREE_SIDE_EFFECTS (result) = TREE_SIDE_EFFECTS (e);
TREE_THIS_VOLATILE (result) = TREE_THIS_VOLATILE (e);
- TREE_RAISES (result) = TREE_RAISES (e);
return result;
}
Constants, decls, types and misc nodes cannot be. */
tree
-build VPROTO((enum tree_code code, tree tt, ...))
+build VPARAMS ((enum tree_code code, tree tt, ...))
{
#ifndef ANSI_PROTOTYPES
enum tree_code code;
register tree t;
register int length;
register int i;
+ int fro;
VA_START (p, tt);
#endif
t = make_node (code);
- length = tree_code_length[(int) code];
+ length = TREE_CODE_LENGTH (code);
TREE_TYPE (t) = tt;
+ /* Below, we automatically set TREE_SIDE_EFFECTS and TREE_RAISED for
+ the result based on those same flags for the arguments. But, if
+ the arguments aren't really even `tree' expressions, we shouldn't
+ be trying to do this. */
+ fro = first_rtl_op (code);
+
if (length == 2)
{
/* This is equivalent to the loop below, but faster. */
register tree arg1 = va_arg (p, tree);
TREE_OPERAND (t, 0) = arg0;
TREE_OPERAND (t, 1) = arg1;
- if ((arg0 && TREE_SIDE_EFFECTS (arg0))
- || (arg1 && TREE_SIDE_EFFECTS (arg1)))
- TREE_SIDE_EFFECTS (t) = 1;
- TREE_RAISES (t)
- = (arg0 && TREE_RAISES (arg0)) || (arg1 && TREE_RAISES (arg1));
+ if (arg0 && fro > 0)
+ {
+ if (TREE_SIDE_EFFECTS (arg0))
+ TREE_SIDE_EFFECTS (t) = 1;
+ }
+ if (arg1 && fro > 1)
+ {
+ if (TREE_SIDE_EFFECTS (arg1))
+ TREE_SIDE_EFFECTS (t) = 1;
+ }
}
else if (length == 1)
{
if (TREE_CODE_CLASS (code) != 's')
abort ();
TREE_OPERAND (t, 0) = arg0;
- if (arg0 && TREE_SIDE_EFFECTS (arg0))
- TREE_SIDE_EFFECTS (t) = 1;
- TREE_RAISES (t) = (arg0 && TREE_RAISES (arg0));
+ if (fro > 0)
+ {
+ if (arg0 && TREE_SIDE_EFFECTS (arg0))
+ TREE_SIDE_EFFECTS (t) = 1;
+ }
}
else
{
{
register tree operand = va_arg (p, tree);
TREE_OPERAND (t, i) = operand;
- if (operand)
+ if (operand && fro > i)
{
if (TREE_SIDE_EFFECTS (operand))
TREE_SIDE_EFFECTS (t) = 1;
- if (TREE_RAISES (operand))
- TREE_RAISES (t) = 1;
}
}
}
length = sizeof (struct tree_exp);
- t = (tree) obstack_alloc (obstack, length);
- bzero ((PTR) t, length);
+ if (ggc_p)
+ t = ggc_alloc_tree (length);
+ else
+ t = (tree) obstack_alloc (obstack, length);
+
+ memset ((PTR) t, 0, sizeof (struct tree_common));
#ifdef GATHER_STATISTICS
- tree_node_counts[(int)kind]++;
- tree_node_sizes[(int)kind] += length;
+ tree_node_counts[(int) kind]++;
+ tree_node_sizes[(int) kind] += length;
#endif
- TREE_TYPE (t) = type;
TREE_SET_CODE (t, code);
+ TREE_SET_PERMANENT (t);
- if (obstack == &permanent_obstack)
- TREE_PERMANENT (t) = 1;
-
+ TREE_TYPE (t) = type;
+ TREE_COMPLEXITY (t) = 0;
TREE_OPERAND (t, 0) = node;
- if (node)
+ if (node && first_rtl_op (code) != 0 && TREE_SIDE_EFFECTS (node))
+ TREE_SIDE_EFFECTS (t) = 1;
+
+ switch (code)
{
- if (TREE_SIDE_EFFECTS (node))
- TREE_SIDE_EFFECTS (t) = 1;
- if (TREE_RAISES (node))
- TREE_RAISES (t) = 1;
+ case INIT_EXPR:
+ case MODIFY_EXPR:
+ case VA_ARG_EXPR:
+ case RTL_EXPR:
+ case PREDECREMENT_EXPR:
+ case PREINCREMENT_EXPR:
+ case POSTDECREMENT_EXPR:
+ case POSTINCREMENT_EXPR:
+ /* All of these have side-effects, no matter what their
+ operands are. */
+ TREE_SIDE_EFFECTS (t) = 1;
+ break;
+
+ default:
+ break;
}
return t;
or even garbage if their values do not matter. */
tree
-build_nt VPROTO((enum tree_code code, ...))
+build_nt VPARAMS ((enum tree_code code, ...))
{
#ifndef ANSI_PROTOTYPES
enum tree_code code;
#endif
t = make_node (code);
- length = tree_code_length[(int) code];
+ length = TREE_CODE_LENGTH (code);
for (i = 0; i < length; i++)
TREE_OPERAND (t, i) = va_arg (p, tree);
on the temp_decl_obstack, regardless. */
tree
-build_parse_node VPROTO((enum tree_code code, ...))
+build_parse_node VPARAMS ((enum tree_code code, ...))
{
#ifndef ANSI_PROTOTYPES
enum tree_code code;
expression_obstack = &temp_decl_obstack;
t = make_node (code);
- length = tree_code_length[(int) code];
+ length = TREE_CODE_LENGTH (code);
for (i = 0; i < length; i++)
TREE_OPERAND (t, i) = va_arg (p, tree);
tree
build_block (vars, tags, subblocks, supercontext, chain)
- tree vars, tags, subblocks, supercontext, chain;
+ tree vars, tags ATTRIBUTE_UNUSED, subblocks, supercontext, chain;
{
register tree block = make_node (BLOCK);
+
BLOCK_VARS (block) = vars;
- BLOCK_TYPE_TAGS (block) = tags;
BLOCK_SUBBLOCKS (block) = subblocks;
BLOCK_SUPERCONTEXT (block) = supercontext;
BLOCK_CHAIN (block) = chain;
int line, col;
{
static const char *last_file = 0;
- static tree last_filenode = NULL_TREE;
+ static tree last_filenode = NULL_TREE;
register tree wfl = make_node (EXPR_WITH_FILE_LOCATION);
EXPR_WFL_NODE (wfl) = node;
last_file = file;
last_filenode = file ? get_identifier (file) : NULL_TREE;
}
+
EXPR_WFL_FILENAME_NODE (wfl) = last_filenode;
if (node)
{
TREE_SIDE_EFFECTS (wfl) = TREE_SIDE_EFFECTS (node);
TREE_TYPE (wfl) = TREE_TYPE (node);
}
+
return wfl;
}
\f
{
if ( ! attribute_list_equal (TYPE_ATTRIBUTES (ttype), attribute))
{
- register int hashcode;
- register struct obstack *ambient_obstack = current_obstack;
+ unsigned int hashcode;
tree ntype;
- if (ambient_obstack != &permanent_obstack)
- current_obstack = TYPE_OBSTACK (ttype);
-
+ push_obstacks (TYPE_OBSTACK (ttype), TYPE_OBSTACK (ttype));
ntype = copy_node (ttype);
TYPE_POINTER_TO (ntype) = 0;
TYPE_NEXT_VARIANT (ntype) = 0;
set_type_quals (ntype, TYPE_UNQUALIFIED);
- hashcode = TYPE_HASH (TREE_CODE (ntype))
- + TYPE_HASH (TREE_TYPE (ntype))
- + attribute_hash_list (attribute);
+ hashcode = (TYPE_HASH (TREE_CODE (ntype))
+ + TYPE_HASH (TREE_TYPE (ntype))
+ + attribute_hash_list (attribute));
switch (TREE_CODE (ntype))
- {
+ {
case FUNCTION_TYPE:
hashcode += TYPE_HASH (TYPE_ARG_TYPES (ntype));
break;
break;
default:
break;
- }
+ }
ntype = type_hash_canon (hashcode, ntype);
ttype = build_qualified_type (ntype, TYPE_QUALS (ttype));
-
- /* We must restore the current obstack after the type_hash_canon call,
- because type_hash_canon calls type_hash_add for permanent types, and
- then type_hash_add calls oballoc expecting to get something permanent
- back. */
- current_obstack = ambient_obstack;
+ pop_obstacks ();
}
return ttype;
#ifdef VALID_MACHINE_DECL_ATTRIBUTE
if (decl != 0
- && VALID_MACHINE_DECL_ATTRIBUTE (decl, decl_attr_list, attr_name, attr_args))
+ && VALID_MACHINE_DECL_ATTRIBUTE (decl, decl_attr_list, attr_name,
+ attr_args))
{
tree attr = lookup_attribute (IDENTIFIER_POINTER (attr_name),
decl_attr_list);
#ifdef VALID_MACHINE_TYPE_ATTRIBUTE
if (validated)
- /* Don't apply the attribute to both the decl and the type. */;
+ /* Don't apply the attribute to both the decl and the type. */
+ ;
else if (VALID_MACHINE_TYPE_ATTRIBUTE (type, type_attr_list, attr_name,
attr_args))
{
else
{
/* If this is part of a declaration, create a type variant,
- otherwise, this is part of a type definition, so add it
+ otherwise, this is part of a type definition, so add it
to the base type. */
type_attr_list = tree_cons (attr_name, attr_args, type_attr_list);
if (decl != 0)
else
TYPE_ATTRIBUTES (type) = type_attr_list;
}
+
if (decl != 0)
TREE_TYPE (decl) = type;
+
validated = 1;
}
tree ident;
{
int ident_len, attr_len;
- char *p;
+ const char *p;
if (TREE_CODE (ident) != IDENTIFIER_NODE)
return 0;
/* Either one unset? Take the set one. */
- if (! (attributes = a1))
+ if ((attributes = a1) == 0)
attributes = a2;
/* One that completely contains the other? Take it. */
- else if (a2 && ! attribute_list_contained (a1, a2))
- {
- if (attribute_list_contained (a2, a1))
- attributes = a2;
- else
- {
- /* Pick the longest list, and hang on the other list. */
- /* ??? For the moment we punt on the issue of attrs with args. */
-
- if (list_length (a1) < list_length (a2))
- attributes = a2, a2 = a1;
-
- for (; a2; a2 = TREE_CHAIN (a2))
- if (lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (a2)),
- attributes) == NULL_TREE)
- {
- a1 = copy_node (a2);
- TREE_CHAIN (a1) = attributes;
- attributes = a1;
- }
- }
- }
+ else if (a2 != 0 && ! attribute_list_contained (a1, a2))
+ {
+ if (attribute_list_contained (a2, a1))
+ attributes = a2;
+ else
+ {
+ /* Pick the longest list, and hang on the other list. */
+ /* ??? For the moment we punt on the issue of attrs with args. */
+
+ if (list_length (a1) < list_length (a2))
+ attributes = a2, a2 = a1;
+
+ for (; a2 != 0; a2 = TREE_CHAIN (a2))
+ if (lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (a2)),
+ attributes) == NULL_TREE)
+ {
+ a1 = copy_node (a2);
+ TREE_CHAIN (a1) = attributes;
+ attributes = a1;
+ }
+ }
+ }
return attributes;
}
static void
set_type_quals (type, type_quals)
tree type;
- int type_quals;
+ int type_quals;
{
TYPE_READONLY (type) = (type_quals & TYPE_QUAL_CONST) != 0;
TYPE_VOLATILE (type) = (type_quals & TYPE_QUAL_VOLATILE) != 0;
int type_quals;
{
register tree t;
-
+
/* Search the chain of variants to see if there is already one there just
like the one we need to have. If so, use that existing one. We must
preserve the TYPE_NAME, since there is code that depends on this. */
/* Hashing of types so that we don't make duplicates.
The entry point is `type_hash_canon'. */
-/* Each hash table slot is a bucket containing a chain
- of these structures. */
-
-struct type_hash
-{
- struct type_hash *next; /* Next structure in the bucket. */
- int hashcode; /* Hash code of this type. */
- tree type; /* The type recorded here. */
-};
-
-/* Now here is the hash table. When recording a type, it is added
- to the slot whose index is the hash code mod the table size.
- Note that the hash table is used for several kinds of types
- (function types, array types and array index range types, for now).
- While all these live in the same table, they are completely independent,
- and the hash code is computed differently for each of these. */
-
-#define TYPE_HASH_SIZE 59
-struct type_hash *type_hash_table[TYPE_HASH_SIZE];
-
/* Compute a hash code for a list of types (chain of TREE_LIST nodes
with types in the TREE_VALUE slots), by adding the hash codes
of the individual types. */
-int
+unsigned int
type_hash_list (list)
tree list;
{
- register int hashcode;
+ unsigned int hashcode;
register tree tail;
+
for (hashcode = 0, tail = list; tail; tail = TREE_CHAIN (tail))
hashcode += TYPE_HASH (TREE_VALUE (tail));
+
return hashcode;
}
+/* These are the Hashtable callback functions. */
+
+/* Returns true if the types are equal. */
+
+static int
+type_hash_eq (va, vb)
+ const void *va;
+ const void *vb;
+{
+ const struct type_hash *a = va, *b = vb;
+ if (a->hash == b->hash
+ && TREE_CODE (a->type) == TREE_CODE (b->type)
+ && TREE_TYPE (a->type) == TREE_TYPE (b->type)
+ && attribute_list_equal (TYPE_ATTRIBUTES (a->type),
+ TYPE_ATTRIBUTES (b->type))
+ && TYPE_ALIGN (a->type) == TYPE_ALIGN (b->type)
+ && (TYPE_MAX_VALUE (a->type) == TYPE_MAX_VALUE (b->type)
+ || tree_int_cst_equal (TYPE_MAX_VALUE (a->type),
+ TYPE_MAX_VALUE (b->type)))
+ && (TYPE_MIN_VALUE (a->type) == TYPE_MIN_VALUE (b->type)
+ || tree_int_cst_equal (TYPE_MIN_VALUE (a->type),
+ TYPE_MIN_VALUE (b->type)))
+ /* Note that TYPE_DOMAIN is TYPE_ARG_TYPES for FUNCTION_TYPE. */
+ && (TYPE_DOMAIN (a->type) == TYPE_DOMAIN (b->type)
+ || (TYPE_DOMAIN (a->type)
+ && TREE_CODE (TYPE_DOMAIN (a->type)) == TREE_LIST
+ && TYPE_DOMAIN (b->type)
+ && TREE_CODE (TYPE_DOMAIN (b->type)) == TREE_LIST
+ && type_list_equal (TYPE_DOMAIN (a->type),
+ TYPE_DOMAIN (b->type)))))
+ return 1;
+ return 0;
+}
+
+/* Return the cached hash value. */
+
+static unsigned int
+type_hash_hash (item)
+ const void *item;
+{
+ return ((const struct type_hash *) item)->hash;
+}
+
/* Look in the type hash table for a type isomorphic to TYPE.
If one is found, return it. Otherwise return 0. */
tree
type_hash_lookup (hashcode, type)
- int hashcode;
+ unsigned int hashcode;
tree type;
{
- register struct type_hash *h;
- for (h = type_hash_table[hashcode % TYPE_HASH_SIZE]; h; h = h->next)
- if (h->hashcode == hashcode
- && TREE_CODE (h->type) == TREE_CODE (type)
- && TREE_TYPE (h->type) == TREE_TYPE (type)
- && attribute_list_equal (TYPE_ATTRIBUTES (h->type),
- TYPE_ATTRIBUTES (type))
- && (TYPE_MAX_VALUE (h->type) == TYPE_MAX_VALUE (type)
- || tree_int_cst_equal (TYPE_MAX_VALUE (h->type),
- TYPE_MAX_VALUE (type)))
- && (TYPE_MIN_VALUE (h->type) == TYPE_MIN_VALUE (type)
- || tree_int_cst_equal (TYPE_MIN_VALUE (h->type),
- TYPE_MIN_VALUE (type)))
- /* Note that TYPE_DOMAIN is TYPE_ARG_TYPES for FUNCTION_TYPE. */
- && (TYPE_DOMAIN (h->type) == TYPE_DOMAIN (type)
- || (TYPE_DOMAIN (h->type)
- && TREE_CODE (TYPE_DOMAIN (h->type)) == TREE_LIST
- && TYPE_DOMAIN (type)
- && TREE_CODE (TYPE_DOMAIN (type)) == TREE_LIST
- && type_list_equal (TYPE_DOMAIN (h->type),
- TYPE_DOMAIN (type)))))
- return h->type;
- return 0;
+ struct type_hash *h, in;
+
+ /* The TYPE_ALIGN field of a type is set by layout_type(), so we
+ must call that routine before comparing TYPE_ALIGNs. */
+ layout_type (type);
+
+ in.hash = hashcode;
+ in.type = type;
+
+ h = htab_find_with_hash (type_hash_table, &in, hashcode);
+ if (h)
+ return h->type;
+ return NULL_TREE;
}
/* Add an entry to the type-hash-table
void
type_hash_add (hashcode, type)
- int hashcode;
+ unsigned int hashcode;
tree type;
{
- register struct type_hash *h;
+ struct type_hash *h;
+ void **loc;
h = (struct type_hash *) permalloc (sizeof (struct type_hash));
- h->hashcode = hashcode;
+ h->hash = hashcode;
h->type = type;
- h->next = type_hash_table[hashcode % TYPE_HASH_SIZE];
- type_hash_table[hashcode % TYPE_HASH_SIZE] = h;
+ loc = htab_find_slot_with_hash (type_hash_table, h, hashcode, INSERT);
+ *(struct type_hash **) loc = h;
}
/* Given TYPE, and HASHCODE its hash code, return the canonical
tree
type_hash_canon (hashcode, type)
- int hashcode;
+ unsigned int hashcode;
tree type;
{
tree t1;
t1 = type_hash_lookup (hashcode, type);
if (t1 != 0)
{
- obstack_free (TYPE_OBSTACK (type), type);
+ if (!ggc_p)
+ obstack_free (TYPE_OBSTACK (type), type);
+
#ifdef GATHER_STATISTICS
- tree_node_counts[(int)t_kind]--;
- tree_node_sizes[(int)t_kind] -= sizeof (struct tree_type);
+ tree_node_counts[(int) t_kind]--;
+ tree_node_sizes[(int) t_kind] -= sizeof (struct tree_type);
#endif
return t1;
}
/* If this is a permanent type, record it for later reuse. */
- if (TREE_PERMANENT (type))
+ if (ggc_p || TREE_PERMANENT (type))
type_hash_add (hashcode, type);
return type;
}
+/* Callback function for htab_traverse. */
+
+static int
+mark_hash_entry (entry, param)
+ void **entry;
+ void *param ATTRIBUTE_UNUSED;
+{
+ struct type_hash *p = *(struct type_hash **) entry;
+
+ ggc_mark_tree (p->type);
+
+ /* Continue scan. */
+ return 1;
+}
+
+/* Mark ARG (which is really a htab_t *) for GC. */
+
+static void
+mark_type_hash (arg)
+ void *arg;
+{
+ htab_t t = *(htab_t *) arg;
+
+ htab_traverse (t, mark_hash_entry, 0);
+}
+
+static void
+print_type_hash_statistics ()
+{
+ fprintf (stderr, "Type hash: size %ld, %ld elements, %f collisions\n",
+ (long) htab_size (type_hash_table),
+ (long) htab_elements (type_hash_table),
+ htab_collisions (type_hash_table));
+}
+
/* Compute a hash code for a list of attributes (chain of TREE_LIST nodes
with names in the TREE_PURPOSE slots and args in the TREE_VALUE slots),
by adding the hash codes of the individual attributes. */
-int
+unsigned int
attribute_hash_list (list)
tree list;
{
- register int hashcode;
+ unsigned int hashcode;
register tree tail;
+
for (hashcode = 0, tail = list; tail; tail = TREE_CHAIN (tail))
/* ??? Do we want to add in TREE_VALUE too? */
hashcode += TYPE_HASH (TREE_PURPOSE (tail));
/* First check the obvious, maybe the lists are identical. */
if (l1 == l2)
- return 1;
+ return 1;
/* Maybe the lists are similar. */
for (t1 = l1, t2 = l2;
- t1 && t2
+ t1 != 0 && t2 != 0
&& TREE_PURPOSE (t1) == TREE_PURPOSE (t2)
&& TREE_VALUE (t1) == TREE_VALUE (t2);
t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2));
if (t1 == 0 && t2 == 0)
return 1;
- for (; t2; t2 = TREE_CHAIN (t2))
+ for (; t2 != 0; t2 = TREE_CHAIN (t2))
{
tree attr
= lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (t2)), l1);
- if (attr == NULL_TREE)
+ if (attr == 0)
return 0;
+
if (simple_cst_equal (TREE_VALUE (t2), TREE_VALUE (attr)) != 1)
return 0;
}
{
if (t1 == t2)
return 1;
+
if (t1 == 0 || t2 == 0)
return 0;
+
if (TREE_CODE (t1) == INTEGER_CST
&& TREE_CODE (t2) == INTEGER_CST
&& TREE_INT_CST_LOW (t1) == TREE_INT_CST_LOW (t2)
&& TREE_INT_CST_HIGH (t1) == TREE_INT_CST_HIGH (t2))
return 1;
+
return 0;
}
if (t1 == t2)
return 0;
- if (!TREE_UNSIGNED (TREE_TYPE (t1)))
+ if (! TREE_UNSIGNED (TREE_TYPE (t1)))
return INT_CST_LT (t1, t2);
+
return INT_CST_LT_UNSIGNED (t1, t2);
}
+/* Return 1 if T is an INTEGER_CST that can be represented in a single
+ HOST_WIDE_INT value. If POS is nonzero, the result must be positive. */
+
+int
+host_integerp (t, pos)
+ tree t;
+ int pos;
+{
+ return (TREE_CODE (t) == INTEGER_CST
+ && ! TREE_OVERFLOW (t)
+ && ((TREE_INT_CST_HIGH (t) == 0
+ && (HOST_WIDE_INT) TREE_INT_CST_LOW (t) >= 0)
+ || (! pos && TREE_INT_CST_HIGH (t) == -1
+ && (HOST_WIDE_INT) TREE_INT_CST_LOW (t) < 0)
+ || (! pos && TREE_INT_CST_HIGH (t) == 0
+ && TREE_UNSIGNED (TREE_TYPE (t)))));
+}
+
+/* Return the HOST_WIDE_INT least significant bits of T if it is an
+ INTEGER_CST and there is no overflow. POS is nonzero if the result must
+ be positive. Abort if we cannot satisfy the above conditions. */
+
+HOST_WIDE_INT
+tree_low_cst (t, pos)
+ tree t;
+ int pos;
+{
+ if (host_integerp (t, pos))
+ return TREE_INT_CST_LOW (t);
+ else
+ abort ();
+}
+
+/* Return the most significant bit of the integer constant T. */
+
+int
+tree_int_cst_msb (t)
+ tree t;
+{
+ register int prec;
+ HOST_WIDE_INT h;
+ unsigned HOST_WIDE_INT l;
+
+ /* Note that using TYPE_PRECISION here is wrong. We care about the
+ actual bits, not the (arbitrary) range of the type. */
+ prec = GET_MODE_BITSIZE (TYPE_MODE (TREE_TYPE (t))) - 1;
+ rshift_double (TREE_INT_CST_LOW (t), TREE_INT_CST_HIGH (t), prec,
+ 2 * HOST_BITS_PER_WIDE_INT, &l, &h, 0);
+ return (l & 1) == 1;
+}
+
/* Return an indication of the sign of the integer constant T.
The return value is -1 if T < 0, 0 if T == 0, and 1 if T > 0.
Note that -1 will never be returned it T's type is unsigned. */
l2 = TREE_CHAIN (l2);
}
- return (l1 == l2);
+ return l1 == l2;
}
/* Return truthvalue of whether T1 is the same tree structure as T2.
{
register enum tree_code code1, code2;
int cmp;
+ int i;
if (t1 == t2)
return 1;
else
return simple_cst_equal (TREE_OPERAND (t1, 0), t2);
}
+
else if (code2 == NOP_EXPR || code2 == CONVERT_EXPR
|| code2 == NON_LVALUE_EXPR)
return simple_cst_equal (t1, TREE_OPERAND (t2, 0));
switch (code1)
{
case INTEGER_CST:
- return TREE_INT_CST_LOW (t1) == TREE_INT_CST_LOW (t2)
- && TREE_INT_CST_HIGH (t1) == TREE_INT_CST_HIGH (t2);
+ return (TREE_INT_CST_LOW (t1) == TREE_INT_CST_LOW (t2)
+ && TREE_INT_CST_HIGH (t1) == TREE_INT_CST_HIGH (t2));
case REAL_CST:
return REAL_VALUES_IDENTICAL (TREE_REAL_CST (t1), TREE_REAL_CST (t2));
case STRING_CST:
- return TREE_STRING_LENGTH (t1) == TREE_STRING_LENGTH (t2)
- && !bcmp (TREE_STRING_POINTER (t1), TREE_STRING_POINTER (t2),
- TREE_STRING_LENGTH (t1));
+ return (TREE_STRING_LENGTH (t1) == TREE_STRING_LENGTH (t2)
+ && ! bcmp (TREE_STRING_POINTER (t1), TREE_STRING_POINTER (t2),
+ TREE_STRING_LENGTH (t1)));
case CONSTRUCTOR:
if (CONSTRUCTOR_ELTS (t1) == CONSTRUCTOR_ELTS (t2))
cmp = simple_cst_equal (TREE_OPERAND (t1, 0), TREE_OPERAND (t2, 0));
if (cmp <= 0)
return cmp;
- return simple_cst_list_equal (TREE_OPERAND (t1, 1), TREE_OPERAND (t2, 1));
+ return
+ simple_cst_list_equal (TREE_OPERAND (t1, 1), TREE_OPERAND (t2, 1));
case TARGET_EXPR:
/* Special case: if either target is an unallocated VAR_DECL,
cmp = 1;
else
cmp = simple_cst_equal (TREE_OPERAND (t1, 0), TREE_OPERAND (t2, 0));
+
if (cmp <= 0)
return cmp;
+
return simple_cst_equal (TREE_OPERAND (t1, 1), TREE_OPERAND (t2, 1));
case WITH_CLEANUP_EXPR:
cmp = simple_cst_equal (TREE_OPERAND (t1, 0), TREE_OPERAND (t2, 0));
if (cmp <= 0)
return cmp;
+
return simple_cst_equal (TREE_OPERAND (t1, 2), TREE_OPERAND (t1, 2));
case COMPONENT_REF:
if (TREE_OPERAND (t1, 1) == TREE_OPERAND (t2, 1))
return simple_cst_equal (TREE_OPERAND (t1, 0), TREE_OPERAND (t2, 0));
+
return 0;
case VAR_DECL:
case CONST_DECL:
case FUNCTION_DECL:
return 0;
-
+
default:
break;
}
switch (TREE_CODE_CLASS (code1))
{
- int i;
case '1':
case '2':
case '<':
case 'r':
case 's':
cmp = 1;
- for (i=0; i<tree_code_length[(int) code1]; ++i)
+ for (i = 0; i < TREE_CODE_LENGTH (code1); i++)
{
cmp = simple_cst_equal (TREE_OPERAND (t1, i), TREE_OPERAND (t2, i));
if (cmp <= 0)
return cmp;
}
+
return cmp;
default:
return -1;
}
}
+
+/* Compare the value of T, an INTEGER_CST, with U, an unsigned integer value.
+ Return -1, 0, or 1 if the value of T is less than, equal to, or greater
+ than U, respectively. */
+
+int
+compare_tree_int (t, u)
+ tree t;
+ unsigned int u;
+{
+ if (tree_int_cst_sgn (t) < 0)
+ return -1;
+ else if (TREE_INT_CST_HIGH (t) != 0)
+ return 1;
+ else if (TREE_INT_CST_LOW (t) == u)
+ return 0;
+ else if (TREE_INT_CST_LOW (t) < u)
+ return -1;
+ else
+ return 1;
+}
\f
/* Constructors for pointer, array and function types.
(RECORD_TYPE, UNION_TYPE and ENUMERAL_TYPE nodes are
/* First, if we already have a type for pointers to TO_TYPE, use it. */
- if (t)
+ if (t != 0)
return t;
/* We need a new one. Put this in the same obstack as TO_TYPE. */
return t;
}
+/* Build the node for the type of references-to-TO_TYPE. */
+
+tree
+build_reference_type (to_type)
+ tree to_type;
+{
+ register tree t = TYPE_REFERENCE_TO (to_type);
+
+ /* First, if we already have a type for pointers to TO_TYPE, use it. */
+
+ if (t)
+ return t;
+
+ /* We need a new one. Put this in the same obstack as TO_TYPE. */
+ push_obstacks (TYPE_OBSTACK (to_type), TYPE_OBSTACK (to_type));
+ t = make_node (REFERENCE_TYPE);
+ pop_obstacks ();
+
+ TREE_TYPE (t) = to_type;
+
+ /* Record this type as the pointer to TO_TYPE. */
+ TYPE_REFERENCE_TO (to_type) = t;
+
+ layout_type (t);
+
+ return t;
+}
+
/* Create a type of integers to be the TYPE_DOMAIN of an ARRAY_TYPE.
MAXVAL should be the maximum value in the domain
(one less than the length of the array).
{
register tree itype = make_node (INTEGER_TYPE);
+ TREE_TYPE (itype) = sizetype;
TYPE_PRECISION (itype) = TYPE_PRECISION (sizetype);
TYPE_MIN_VALUE (itype) = size_zero_node;
TYPE_SIZE (itype) = TYPE_SIZE (sizetype);
TYPE_SIZE_UNIT (itype) = TYPE_SIZE_UNIT (sizetype);
TYPE_ALIGN (itype) = TYPE_ALIGN (sizetype);
- if (TREE_CODE (maxval) == INTEGER_CST)
- {
- int maxint = (int) TREE_INT_CST_LOW (maxval);
- /* If the domain should be empty, make sure the maxval
- remains -1 and is not spoiled by truncation. */
- if (INT_CST_LT (maxval, integer_zero_node))
- {
- TYPE_MAX_VALUE (itype) = build_int_2 (-1, -1);
- TREE_TYPE (TYPE_MAX_VALUE (itype)) = sizetype;
- }
- return type_hash_canon (maxint < 0 ? ~maxint : maxint, itype);
- }
+ TYPE_USER_ALIGN (itype) = TYPE_USER_ALIGN (sizetype);
+
+ if (host_integerp (maxval, 1))
+ return type_hash_canon (tree_low_cst (maxval, 1), itype);
else
return itype;
}
TYPE_SIZE (itype) = TYPE_SIZE (type);
TYPE_SIZE_UNIT (itype) = TYPE_SIZE_UNIT (type);
TYPE_ALIGN (itype) = TYPE_ALIGN (type);
- if (TREE_CODE (lowval) == INTEGER_CST)
- {
- HOST_WIDE_INT lowint, highint;
- int maxint;
-
- lowint = TREE_INT_CST_LOW (lowval);
- if (highval && TREE_CODE (highval) == INTEGER_CST)
- highint = TREE_INT_CST_LOW (highval);
- else
- highint = (~(unsigned HOST_WIDE_INT)0) >> 1;
+ TYPE_USER_ALIGN (itype) = TYPE_USER_ALIGN (type);
- maxint = (int) (highint - lowint);
- return type_hash_canon (maxint < 0 ? ~maxint : maxint, itype);
- }
+ if (host_integerp (lowval, 0) && highval != 0 && host_integerp (highval, 0))
+ return type_hash_canon (tree_low_cst (highval, 0)
+ - tree_low_cst (lowval, 0),
+ itype);
else
return itype;
}
build_index_2_type (lowval,highval)
tree lowval, highval;
{
- return build_range_type (NULL_TREE, lowval, highval);
+ return build_range_type (sizetype, lowval, highval);
}
/* Return nonzero iff ITYPE1 and ITYPE2 are equal (in the LISP sense).
{
if (TREE_CODE (itype1) != TREE_CODE (itype2))
return 0;
+
if (TREE_CODE (itype1) == INTEGER_TYPE)
{
if (TYPE_PRECISION (itype1) != TYPE_PRECISION (itype2)
|| simple_cst_equal (TYPE_SIZE (itype1), TYPE_SIZE (itype2)) != 1
|| TYPE_ALIGN (itype1) != TYPE_ALIGN (itype2))
return 0;
+
if (1 == simple_cst_equal (TYPE_MIN_VALUE (itype1),
TYPE_MIN_VALUE (itype2))
&& 1 == simple_cst_equal (TYPE_MAX_VALUE (itype1),
tree elt_type, index_type;
{
register tree t;
- int hashcode;
+ unsigned int hashcode;
if (TREE_CODE (elt_type) == FUNCTION_TYPE)
{
hashcode = TYPE_HASH (elt_type) + TYPE_HASH (index_type);
t = type_hash_canon (hashcode, t);
- if (TYPE_SIZE (t) == 0)
+ if (!COMPLETE_TYPE_P (t))
layout_type (t);
return t;
}
tree value_type, arg_types;
{
register tree t;
- int hashcode;
+ unsigned int hashcode;
if (TREE_CODE (value_type) == FUNCTION_TYPE)
{
hashcode = TYPE_HASH (value_type) + type_hash_list (arg_types);
t = type_hash_canon (hashcode, t);
- if (TYPE_SIZE (t) == 0)
+ if (!COMPLETE_TYPE_P (t))
layout_type (t);
return t;
}
-/* Build the node for the type of references-to-TO_TYPE. */
-
-tree
-build_reference_type (to_type)
- tree to_type;
-{
- register tree t = TYPE_REFERENCE_TO (to_type);
-
- /* First, if we already have a type for pointers to TO_TYPE, use it. */
-
- if (t)
- return t;
-
- /* We need a new one. Put this in the same obstack as TO_TYPE. */
- push_obstacks (TYPE_OBSTACK (to_type), TYPE_OBSTACK (to_type));
- t = make_node (REFERENCE_TYPE);
- pop_obstacks ();
-
- TREE_TYPE (t) = to_type;
-
- /* Record this type as the pointer to TO_TYPE. */
- TYPE_REFERENCE_TO (to_type) = t;
-
- layout_type (t);
-
- return t;
-}
-
/* Construct, lay out and return the type of methods belonging to class
BASETYPE and whose arguments and values are described by TYPE.
If that type exists already, reuse it.
tree basetype, type;
{
register tree t;
- int hashcode;
+ unsigned int hashcode;
/* Make a node of the sort we want. */
t = make_node (METHOD_TYPE);
hashcode = TYPE_HASH (basetype) + TYPE_HASH (type);
t = type_hash_canon (hashcode, t);
- if (TYPE_SIZE (t) == 0)
+ if (!COMPLETE_TYPE_P (t))
layout_type (t);
return t;
tree basetype, type;
{
register tree t;
- int hashcode;
+ unsigned int hashcode;
/* Make a node of the sort we want. */
t = make_node (OFFSET_TYPE);
hashcode = TYPE_HASH (basetype) + TYPE_HASH (type);
t = type_hash_canon (hashcode, t);
- if (TYPE_SIZE (t) == 0)
+ if (!COMPLETE_TYPE_P (t))
layout_type (t);
return t;
tree component_type;
{
register tree t;
- int hashcode;
+ unsigned int hashcode;
/* Make a node of the sort we want. */
t = make_node (COMPLEX_TYPE);
hashcode = TYPE_HASH (component_type);
t = type_hash_canon (hashcode, t);
- if (TYPE_SIZE (t) == 0)
+ if (!COMPLETE_TYPE_P (t))
layout_type (t);
+ /* If we are writing Dwarf2 output we need to create a name,
+ since complex is a fundamental type. */
+ if (write_symbols == DWARF2_DEBUG && ! TYPE_NAME (t))
+ {
+ const char *name;
+ if (component_type == char_type_node)
+ name = "complex char";
+ else if (component_type == signed_char_type_node)
+ name = "complex signed char";
+ else if (component_type == unsigned_char_type_node)
+ name = "complex unsigned char";
+ else if (component_type == short_integer_type_node)
+ name = "complex short int";
+ else if (component_type == short_unsigned_type_node)
+ name = "complex short unsigned int";
+ else if (component_type == integer_type_node)
+ name = "complex int";
+ else if (component_type == unsigned_type_node)
+ name = "complex unsigned int";
+ else if (component_type == long_integer_type_node)
+ name = "complex long int";
+ else if (component_type == long_unsigned_type_node)
+ name = "complex long unsigned int";
+ else if (component_type == long_long_integer_type_node)
+ name = "complex long long int";
+ else if (component_type == long_long_unsigned_type_node)
+ name = "complex long long unsigned int";
+ else
+ name = 0;
+
+ if (name != 0)
+ TYPE_NAME (t) = get_identifier (name);
+ }
+
return t;
}
\f
OP must have integer, real or enumeral type. Pointers are not allowed!
There are some cases where the obvious value we could return
- would regenerate to OP if converted to OP's type,
+ would regenerate to OP if converted to OP's type,
but would not extend like OP to wider types.
If FOR_TYPE indicates such extension is contemplated, we eschew such values.
For example, if OP is (unsigned short)(signed char)-1,
/* Don't crash if field not laid out yet. */
&& DECL_SIZE (TREE_OPERAND (op, 1)) != 0)
{
- unsigned innerprec = TREE_INT_CST_LOW (DECL_SIZE (TREE_OPERAND (op, 1)));
+ unsigned int innerprec
+ = TREE_INT_CST_LOW (DECL_SIZE (TREE_OPERAND (op, 1)));
+
type = type_for_size (innerprec, TREE_UNSIGNED (TREE_OPERAND (op, 1)));
/* We can get this structure field in the narrowest type it fits in.
TREE_OPERAND (op, 1));
TREE_SIDE_EFFECTS (win) = TREE_SIDE_EFFECTS (op);
TREE_THIS_VOLATILE (win) = TREE_THIS_VOLATILE (op);
- TREE_RAISES (win) = TREE_RAISES (op);
}
}
return win;
while (TREE_CODE (op) == NOP_EXPR)
{
register int bitschange
- = TYPE_PRECISION (TREE_TYPE (op))
- - TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op, 0)));
+ = (TYPE_PRECISION (TREE_TYPE (op))
+ - TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op, 0))));
/* Truncations are many-one so cannot be removed. */
if (bitschange < 0)
/* Since type_for_size always gives an integer type. */
&& TREE_CODE (TREE_TYPE (op)) != REAL_TYPE)
{
- unsigned innerprec = TREE_INT_CST_LOW (DECL_SIZE (TREE_OPERAND (op, 1)));
+ unsigned int innerprec
+ = TREE_INT_CST_LOW (DECL_SIZE (TREE_OPERAND (op, 1)));
+
tree type = type_for_size (innerprec, TREE_UNSIGNED (op));
/* We can get this structure field in a narrower type that fits it,
TREE_OPERAND (op, 1));
TREE_SIDE_EFFECTS (win) = TREE_SIDE_EFFECTS (op);
TREE_THIS_VOLATILE (win) = TREE_THIS_VOLATILE (op);
- TREE_RAISES (win) = TREE_RAISES (op);
}
}
*unsignedp_ptr = uns;
&& TREE_UNSIGNED (TREE_TYPE (c))));
}
+/* Given a DECL or TYPE, return the scope in which it was declared, or
+ NULL_TREE if there is no containing scope. */
+
+tree
+get_containing_scope (t)
+ tree t;
+{
+ return (TYPE_P (t) ? TYPE_CONTEXT (t) : DECL_CONTEXT (t));
+}
+
/* Return the innermost context enclosing DECL that is
a FUNCTION_DECL, or zero if none. */
if (TREE_CODE (decl) == SAVE_EXPR)
context = SAVE_EXPR_CONTEXT (decl);
+
+ /* C++ virtual functions use DECL_CONTEXT for the class of the vtable
+ where we look up the function at runtime. Such functions always take
+ a first argument of type 'pointer to real context'.
+
+ C++ should really be fixed to use DECL_CONTEXT for the real context,
+ and use something else for the "virtual context". */
+ else if (TREE_CODE (decl) == FUNCTION_DECL && DECL_VINDEX (decl))
+ context
+ = TYPE_MAIN_VARIANT
+ (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl)))));
else
context = DECL_CONTEXT (decl);
while (context && TREE_CODE (context) != FUNCTION_DECL)
{
- if (TREE_CODE_CLASS (TREE_CODE (context)) == 't')
- context = TYPE_CONTEXT (context);
- else if (TREE_CODE_CLASS (TREE_CODE (context)) == 'd')
- context = DECL_CONTEXT (context);
- else if (TREE_CODE (context) == BLOCK)
+ if (TREE_CODE (context) == BLOCK)
context = BLOCK_SUPERCONTEXT (context);
else
- /* Unhandled CONTEXT !? */
- abort ();
+ context = get_containing_scope (context);
}
return context;
|| TREE_CODE (context) == UNION_TYPE
|| TREE_CODE (context) == QUAL_UNION_TYPE)
return context;
+
if (TREE_CODE (context) == TYPE_DECL
|| TREE_CODE (context) == FUNCTION_DECL)
context = DECL_CONTEXT (context);
+
else if (TREE_CODE (context) == BLOCK)
context = BLOCK_SUPERCONTEXT (context);
+
else
/* Unhandled CONTEXT!? */
abort ();
return NULL_TREE;
}
-/* Print debugging information about the size of the
- toplev_inline_obstacks. */
+/* CALL is a CALL_EXPR. Return the declaration for the function
+ called, or NULL_TREE if the called function cannot be
+ determined. */
-void
-print_inline_obstack_statistics ()
+tree
+get_callee_fndecl (call)
+ tree call;
{
- struct simple_obstack_stack *current = toplev_inline_obstacks;
- int n_obstacks = 0;
- int n_alloc = 0;
- int n_chunks = 0;
+ tree addr;
- for (; current; current = current->next, ++n_obstacks)
- {
- struct obstack *o = current->obstack;
- struct _obstack_chunk *chunk = o->chunk;
+ /* It's invalid to call this function with anything but a
+ CALL_EXPR. */
+ if (TREE_CODE (call) != CALL_EXPR)
+ abort ();
- n_alloc += o->next_free - chunk->contents;
- chunk = chunk->prev;
- ++n_chunks;
- for (; chunk; chunk = chunk->prev, ++n_chunks)
- n_alloc += chunk->limit - &chunk->contents[0];
- }
- fprintf (stderr, "inline obstacks: %d obstacks, %d bytes, %d chunks\n",
- n_obstacks, n_alloc, n_chunks);
+ /* The first operand to the CALL is the address of the function
+ called. */
+ addr = TREE_OPERAND (call, 0);
+
+ STRIP_NOPS (addr);
+
+ /* If this is a readonly function pointer, extract its initial value. */
+ if (DECL_P (addr) && TREE_CODE (addr) != FUNCTION_DECL
+ && TREE_READONLY (addr) && ! TREE_THIS_VOLATILE (addr)
+ && DECL_INITIAL (addr))
+ addr = DECL_INITIAL (addr);
+
+ /* If the address is just `&f' for some function `f', then we know
+ that `f' is being called. */
+ if (TREE_CODE (addr) == ADDR_EXPR
+ && TREE_CODE (TREE_OPERAND (addr, 0)) == FUNCTION_DECL)
+ return TREE_OPERAND (addr, 0);
+
+ /* We couldn't figure out what was being called. */
+ return NULL_TREE;
}
/* Print debugging information about the obstack O, named STR. */
print_obstack_statistics ("temporary_obstack", &temporary_obstack);
print_obstack_statistics ("momentary_obstack", &momentary_obstack);
print_obstack_statistics ("temp_decl_obstack", &temp_decl_obstack);
- print_inline_obstack_statistics ();
+ print_type_hash_statistics ();
print_lang_statistics ();
}
\f
#endif /* NO_DOT_IN_LABEL */
#endif /* NO_DOLLAR_IN_LABEL */
-extern char * first_global_object_name;
-extern char * weak_global_object_name;
-
/* Appends 6 random characters to TEMPLATE to (hopefully) avoid name
clashes in cases where we can't reliably choose a unique name.
template[6] = '\0';
}
+/* P is a string that will be used in a symbol. Mask out any characters
+ that are not valid in that context. */
+
+void
+clean_symbol_name (p)
+ char *p;
+{
+ for (; *p; p++)
+ if (! (ISDIGIT(*p)
+#ifndef NO_DOLLAR_IN_LABEL /* this for `$'; unlikely, but... -- kr */
+ || *p == '$'
+#endif
+#ifndef NO_DOT_IN_LABEL /* this for `.'; unlikely, but... */
+ || *p == '.'
+#endif
+ || ISUPPER (*p)
+ || ISLOWER (*p)))
+ *p = '_';
+}
+
/* Generate a name for a function unique to this translation unit.
TYPE is some string to identify the purpose of this function to the
linker or collect2. */
const char *type;
{
char *buf;
- register char *p;
+ const char *p;
+ char *q;
if (first_global_object_name)
p = first_global_object_name;
if (! file)
file = input_filename;
- p = (char *) alloca (7 + strlen (name) + strlen (file));
+ q = (char *) alloca (7 + strlen (name) + strlen (file));
- sprintf (p, "%s%s", name, file);
- append_random_chars (p);
+ sprintf (q, "%s%s", name, file);
+ append_random_chars (q);
+ p = q;
}
buf = (char *) alloca (sizeof (FILE_FUNCTION_FORMAT) + strlen (p)
+ strlen (type));
- /* Set up the name of the file-level functions we may need. */
- /* Use a global object (which is already required to be unique over
+ /* Set up the name of the file-level functions we may need.
+ Use a global object (which is already required to be unique over
the program) rather than the file name (which imposes extra
- constraints). -- Raeburn@MIT.EDU, 10 Jan 1990. */
+ constraints). */
sprintf (buf, FILE_FUNCTION_FORMAT, type, p);
/* Don't need to pull weird characters out of global names. */
if (p != first_global_object_name)
- {
- for (p = buf+11; *p; p++)
- if (! ((*p >= '0' && *p <= '9')
-#if 0 /* we always want labels, which are valid C++ identifiers (+ `$') */
-#ifndef ASM_IDENTIFY_GCC /* this is required if `.' is invalid -- k. raeburn */
- || *p == '.'
-#endif
-#endif
-#ifndef NO_DOLLAR_IN_LABEL /* this for `$'; unlikely, but... -- kr */
- || *p == '$'
-#endif
-#ifndef NO_DOT_IN_LABEL /* this for `.'; unlikely, but... */
- || *p == '.'
-#endif
- || (*p >= 'A' && *p <= 'Z')
- || (*p >= 'a' && *p <= 'z')))
- *p = '_';
- }
+ clean_symbol_name (buf + 11);
return get_identifier (buf);
}
int kind;
{
char p[2];
+
p[0] = kind;
p[1] = 0;
return get_file_function_name_long (p);
}
-
\f
/* Expand (the constant part of) a SET_TYPE CONSTRUCTOR node.
The result is placed in BUFFER (which has length BIT_SIZE),
for (i = 0; i < bit_size; i++)
buffer[i] = 0;
- for (vals = TREE_OPERAND (init, 1);
+ for (vals = TREE_OPERAND (init, 1);
vals != NULL_TREE; vals = TREE_CHAIN (vals))
{
if (TREE_CODE (TREE_VALUE (vals)) != INTEGER_CST
= TREE_INT_CST_LOW (TREE_PURPOSE (vals)) - domain_min;
HOST_WIDE_INT hi_index
= TREE_INT_CST_LOW (TREE_VALUE (vals)) - domain_min;
+
if (lo_index < 0 || lo_index >= bit_size
- || hi_index < 0 || hi_index >= bit_size)
+ || hi_index < 0 || hi_index >= bit_size)
abort ();
- for ( ; lo_index <= hi_index; lo_index++)
+ for (; lo_index <= hi_index; lo_index++)
buffer[lo_index] = 1;
}
else
int bit_size = wd_size * set_word_size;
int bit_pos = 0;
unsigned char *bytep = buffer;
- char *bit_buffer = (char *) alloca(bit_size);
+ char *bit_buffer = (char *) alloca (bit_size);
tree non_const_bits = get_set_constructor_bits (init, bit_buffer, bit_size);
for (i = 0; i < wd_size; i++)
return non_const_bits;
}
\f
-#ifdef ENABLE_CHECKING
-
-#if defined __GNUC__ && (__GNUC__ > 2 || __GNUC_MINOR__ > 6)
-
+#if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
/* Complain that the tree code of NODE does not match the expected CODE.
- FILE, LINE, and FUNCTION are of the caller.
+ FILE, LINE, and FUNCTION are of the caller. */
- FIXME: should print the blather about reporting the bug. */
void
tree_check_failed (node, code, file, line, function)
const tree node;
int line;
const char *function;
{
- fatal ("Internal compiler error in `%s', at %s:%d:\n\
-\texpected %s, have %s\n",
- function, trim_filename (file), line,
+ error ("Tree check: expected %s, have %s",
tree_code_name[code], tree_code_name[TREE_CODE (node)]);
+ fancy_abort (file, line, function);
}
/* Similar to above, except that we check for a class of tree
code, given in CL. */
+
void
tree_class_check_failed (node, cl, file, line, function)
const tree node;
- char cl;
+ int cl;
const char *file;
int line;
const char *function;
{
- fatal ("Internal compiler error in `%s', at %s:%d:\n\
-\texpected '%c', have '%c' (%s)\n",
- function, trim_filename (file), line, cl,
- TREE_CODE_CLASS (TREE_CODE (node)),
+ error ("Tree check: expected class '%c', have '%c' (%s)",
+ cl, TREE_CODE_CLASS (TREE_CODE (node)),
tree_code_name[TREE_CODE (node)]);
+ fancy_abort (file, line, function);
}
-#else /* not gcc or old gcc */
+#endif /* ENABLE_TREE_CHECKING */
+\f
+/* For a new vector type node T, build the information necessary for
+ debuggint output. */
-/* These functions are just like the above, but they have to
- do the check as well as report the error. */
-tree
-tree_check (node, code, file, line)
- const tree node;
- enum tree_code code;
- const char *file;
- int line;
-{
- if (TREE_CODE (node) == code)
- return node;
+static void
+finish_vector_type (t)
+ tree t;
+{
+ layout_type (t);
- fatal ("Internal compiler error at %s:%d:\n\texpected %s, have %s\n",
- file, trim_filename (file), tree_code_name[code], tree_code_name[TREE_CODE(node)]);
+ {
+ tree index = build_int_2 (TYPE_VECTOR_SUBPARTS (t) - 1, 0);
+ tree array = build_array_type (TREE_TYPE (t),
+ build_index_type (index));
+ tree rt = make_node (RECORD_TYPE);
+
+ TYPE_FIELDS (rt) = build_decl (FIELD_DECL, get_identifier ("f"), array);
+ DECL_CONTEXT (TYPE_FIELDS (rt)) = rt;
+ layout_type (rt);
+ TYPE_DEBUG_REPRESENTATION_TYPE (t) = rt;
+ /* In dwarfout.c, type lookup uses TYPE_UID numbers. We want to output
+ the representation type, and we want to find that die when looking up
+ the vector type. This is most easily achieved by making the TYPE_UID
+ numbers equal. */
+ TYPE_UID (rt) = TYPE_UID (t);
+ }
}
-tree
-tree_class_check (node, class, file, line)
- const tree node;
- char class;
- const char *file;
- int line;
-{
- if (TREE_CODE_CLASS (TREE_CODE (node)) == class)
- return node;
+#ifndef CHAR_TYPE_SIZE
+#define CHAR_TYPE_SIZE BITS_PER_UNIT
+#endif
- fatal ("Internal compiler error at %s:%d:\n\
-\texpected '%c', have '%c' (%s)\n",
- file, trim_filename (file), class, TREE_CODE_CLASS (TREE_CODE (node)),
- tree_code_name[TREE_CODE(node)]);
-}
+#ifndef SHORT_TYPE_SIZE
+#define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
+#endif
-tree
-cst_or_constructor_check (node, file, line)
- const tree node;
- const char *file;
- int line;
-{
- enum tree_code code = TREE_CODE (node);
-
- if (code == CONSTRUCTOR || TREE_CODE_CLASS (code) == 'c')
- return node;
+#ifndef INT_TYPE_SIZE
+#define INT_TYPE_SIZE BITS_PER_WORD
+#endif
- fatal ("Internal compiler error at %s:%d:\n\
-\texpected constructor, have %s\n",
- file, line, tree_code_name[code]);
-}
+#ifndef LONG_TYPE_SIZE
+#define LONG_TYPE_SIZE BITS_PER_WORD
+#endif
-tree
-expr_check (node, file, line)
- const tree node;
- const char *file;
- int line;
-{
- char c = TREE_CODE_CLASS (TREE_CODE (node));
+#ifndef LONG_LONG_TYPE_SIZE
+#define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
+#endif
- if (c == 'r' || c == 's' || c == '<'
- || c == '1' || c == '2' || c == 'e')
- return node;
+#ifndef FLOAT_TYPE_SIZE
+#define FLOAT_TYPE_SIZE BITS_PER_WORD
+#endif
- fatal ("Internal compiler error at %s:%d:\n\
-\texpected 'e', have '%c' (%s)\n",
- file, trim_filename (file), c, tree_code_name[TREE_CODE (node)]);
-}
+#ifndef DOUBLE_TYPE_SIZE
+#define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
+#endif
-#endif /* not gcc or old gcc */
-#endif /* ENABLE_CHECKING */
+#ifndef LONG_DOUBLE_TYPE_SIZE
+#define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
+#endif
-/* Return the alias set for T, which may be either a type or an
- expression. */
+/* Create nodes for all integer types (and error_mark_node) using the sizes
+ of C datatypes. The caller should call set_sizetype soon after calling
+ this function to select one of the types as sizetype. */
-int
-get_alias_set (t)
- tree t;
-{
- if (!flag_strict_aliasing || !lang_get_alias_set)
- /* If we're not doing any lanaguage-specific alias analysis, just
- assume everything aliases everything else. */
- return 0;
- else
- return (*lang_get_alias_set) (t);
+void
+build_common_tree_nodes (signed_char)
+ int signed_char;
+{
+ error_mark_node = make_node (ERROR_MARK);
+ TREE_TYPE (error_mark_node) = error_mark_node;
+
+ initialize_sizetypes ();
+
+ /* Define both `signed char' and `unsigned char'. */
+ signed_char_type_node = make_signed_type (CHAR_TYPE_SIZE);
+ unsigned_char_type_node = make_unsigned_type (CHAR_TYPE_SIZE);
+
+ /* Define `char', which is like either `signed char' or `unsigned char'
+ but not the same as either. */
+ char_type_node
+ = (signed_char
+ ? make_signed_type (CHAR_TYPE_SIZE)
+ : make_unsigned_type (CHAR_TYPE_SIZE));
+
+ short_integer_type_node = make_signed_type (SHORT_TYPE_SIZE);
+ short_unsigned_type_node = make_unsigned_type (SHORT_TYPE_SIZE);
+ integer_type_node = make_signed_type (INT_TYPE_SIZE);
+ unsigned_type_node = make_unsigned_type (INT_TYPE_SIZE);
+ long_integer_type_node = make_signed_type (LONG_TYPE_SIZE);
+ long_unsigned_type_node = make_unsigned_type (LONG_TYPE_SIZE);
+ long_long_integer_type_node = make_signed_type (LONG_LONG_TYPE_SIZE);
+ long_long_unsigned_type_node = make_unsigned_type (LONG_LONG_TYPE_SIZE);
+
+ intQI_type_node = make_signed_type (GET_MODE_BITSIZE (QImode));
+ intHI_type_node = make_signed_type (GET_MODE_BITSIZE (HImode));
+ intSI_type_node = make_signed_type (GET_MODE_BITSIZE (SImode));
+ intDI_type_node = make_signed_type (GET_MODE_BITSIZE (DImode));
+#if HOST_BITS_PER_WIDE_INT >= 64
+ intTI_type_node = make_signed_type (GET_MODE_BITSIZE (TImode));
+#endif
+
+ unsigned_intQI_type_node = make_unsigned_type (GET_MODE_BITSIZE (QImode));
+ unsigned_intHI_type_node = make_unsigned_type (GET_MODE_BITSIZE (HImode));
+ unsigned_intSI_type_node = make_unsigned_type (GET_MODE_BITSIZE (SImode));
+ unsigned_intDI_type_node = make_unsigned_type (GET_MODE_BITSIZE (DImode));
+#if HOST_BITS_PER_WIDE_INT >= 64
+ unsigned_intTI_type_node = make_unsigned_type (GET_MODE_BITSIZE (TImode));
+#endif
}
-/* Return a brand-new alias set. */
+/* Call this function after calling build_common_tree_nodes and set_sizetype.
+ It will create several other common tree nodes. */
-int
-new_alias_set ()
-{
- static int last_alias_set;
- if (flag_strict_aliasing)
- return ++last_alias_set;
+void
+build_common_tree_nodes_2 (short_double)
+ int short_double;
+{
+ /* Define these next since types below may used them. */
+ integer_zero_node = build_int_2 (0, 0);
+ integer_one_node = build_int_2 (1, 0);
+
+ size_zero_node = size_int (0);
+ size_one_node = size_int (1);
+ bitsize_zero_node = bitsize_int (0);
+ bitsize_one_node = bitsize_int (1);
+ bitsize_unit_node = bitsize_int (BITS_PER_UNIT);
+
+ void_type_node = make_node (VOID_TYPE);
+ layout_type (void_type_node);
+
+ /* We are not going to have real types in C with less than byte alignment,
+ so we might as well not have any types that claim to have it. */
+ TYPE_ALIGN (void_type_node) = BITS_PER_UNIT;
+ TYPE_USER_ALIGN (void_type_node) = 0;
+
+ null_pointer_node = build_int_2 (0, 0);
+ TREE_TYPE (null_pointer_node) = build_pointer_type (void_type_node);
+ layout_type (TREE_TYPE (null_pointer_node));
+
+ ptr_type_node = build_pointer_type (void_type_node);
+ const_ptr_type_node
+ = build_pointer_type (build_type_variant (void_type_node, 1, 0));
+
+ float_type_node = make_node (REAL_TYPE);
+ TYPE_PRECISION (float_type_node) = FLOAT_TYPE_SIZE;
+ layout_type (float_type_node);
+
+ double_type_node = make_node (REAL_TYPE);
+ if (short_double)
+ TYPE_PRECISION (double_type_node) = FLOAT_TYPE_SIZE;
else
- return 0;
+ TYPE_PRECISION (double_type_node) = DOUBLE_TYPE_SIZE;
+ layout_type (double_type_node);
+
+ long_double_type_node = make_node (REAL_TYPE);
+ TYPE_PRECISION (long_double_type_node) = LONG_DOUBLE_TYPE_SIZE;
+ layout_type (long_double_type_node);
+
+ complex_integer_type_node = make_node (COMPLEX_TYPE);
+ TREE_TYPE (complex_integer_type_node) = integer_type_node;
+ layout_type (complex_integer_type_node);
+
+ complex_float_type_node = make_node (COMPLEX_TYPE);
+ TREE_TYPE (complex_float_type_node) = float_type_node;
+ layout_type (complex_float_type_node);
+
+ complex_double_type_node = make_node (COMPLEX_TYPE);
+ TREE_TYPE (complex_double_type_node) = double_type_node;
+ layout_type (complex_double_type_node);
+
+ complex_long_double_type_node = make_node (COMPLEX_TYPE);
+ TREE_TYPE (complex_long_double_type_node) = long_double_type_node;
+ layout_type (complex_long_double_type_node);
+
+#ifdef BUILD_VA_LIST_TYPE
+ BUILD_VA_LIST_TYPE (va_list_type_node);
+#else
+ va_list_type_node = ptr_type_node;
+#endif
+
+ V4SF_type_node = make_node (VECTOR_TYPE);
+ TREE_TYPE (V4SF_type_node) = float_type_node;
+ TYPE_MODE (V4SF_type_node) = V4SFmode;
+ finish_vector_type (V4SF_type_node);
+
+ V4SI_type_node = make_node (VECTOR_TYPE);
+ TREE_TYPE (V4SI_type_node) = intSI_type_node;
+ TYPE_MODE (V4SI_type_node) = V4SImode;
+ finish_vector_type (V4SI_type_node);
+
+ V2SI_type_node = make_node (VECTOR_TYPE);
+ TREE_TYPE (V2SI_type_node) = intSI_type_node;
+ TYPE_MODE (V2SI_type_node) = V2SImode;
+ finish_vector_type (V2SI_type_node);
+
+ V4HI_type_node = make_node (VECTOR_TYPE);
+ TREE_TYPE (V4HI_type_node) = intHI_type_node;
+ TYPE_MODE (V4HI_type_node) = V4HImode;
+ finish_vector_type (V4HI_type_node);
+
+ V8QI_type_node = make_node (VECTOR_TYPE);
+ TREE_TYPE (V8QI_type_node) = intQI_type_node;
+ TYPE_MODE (V8QI_type_node) = V8QImode;
+ finish_vector_type (V8QI_type_node);
}
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