/* 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, 2001 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 "obstack.h"
#include "toplev.h"
#include "ggc.h"
+#include "hashtab.h"
+#include "output.h"
+#include "target.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, 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 PROTO ((tree));
+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
- the bodies and parameters of function definitions. */
+/* Objects allocated on this obstack last forever. */
struct obstack permanent_obstack;
-/* The initial RTL, and all ..._TYPE nodes, in a function
- are allocated in this obstack. Usually they are freed at the
- end of the function, but if the function is inline they are saved.
- For top-level functions, this is maybepermanent_obstack.
- Separate obstacks are made for nested functions. */
-
-struct obstack *function_maybepermanent_obstack;
-
-/* This is the function_maybepermanent_obstack for top-level functions. */
-
-struct obstack maybepermanent_obstack;
-
-/* 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.
- Separate obstacks are made for nested functions. */
-
-struct obstack *function_obstack;
-
-/* This is used for reading initializers of global variables. */
-
-struct obstack temporary_obstack;
-
-/* The tree nodes of an expression are allocated
- in this obstack, and all are freed at the end of the expression. */
-
-struct obstack momentary_obstack;
-
-/* The tree nodes of a declarator are allocated
- in this obstack, and all are freed when the declarator
- has been parsed. */
-
-static struct obstack temp_decl_obstack;
-
-/* This points at either permanent_obstack
- or the current function_maybepermanent_obstack. */
-
-struct obstack *saveable_obstack;
-
-/* This is same as saveable_obstack during parse and expansion phase;
- it points to the current function's obstack during optimization.
- This is the obstack to be used for creating rtl objects. */
-
-struct obstack *rtl_obstack;
-
-/* This points at either permanent_obstack or the current function_obstack. */
-
-struct obstack *current_obstack;
-
-/* This points at either permanent_obstack or the current function_obstack
- or momentary_obstack. */
-
-struct obstack *expression_obstack;
-
-/* Stack of obstack selections for push_obstacks and pop_obstacks. */
-
-struct obstack_stack
-{
- struct obstack_stack *next;
- struct obstack *current;
- struct obstack *saveable;
- struct obstack *expression;
- struct obstack *rtl;
-};
-
-struct obstack_stack *obstack_stack;
-
-/* Obstack for allocating struct obstack_stack entries. */
-
-static struct obstack obstack_stack_obstack;
-
-/* Addresses of first objects in some obstacks.
- This is for freeing their entire contents. */
-char *maybepermanent_firstobj;
-char *temporary_firstobj;
-char *momentary_firstobj;
-char *temp_decl_firstobj;
-
-/* This is used to preserve objects (mainly array initializers) that need to
- live until the end of the current function, but no further. */
-char *momentary_function_firstobj;
-
-/* Nonzero means all ..._TYPE nodes should be allocated permanently. */
-
-int all_types_permanent;
-
-/* Stack of places to restore the momentary obstack back to. */
-
-struct momentary_level
-{
- /* Pointer back to previous such level. */
- struct momentary_level *prev;
- /* First object allocated within this level. */
- char *base;
- /* Value of expression_obstack saved at entry to this level. */
- struct obstack *obstack;
-};
-
-struct momentary_level *momentary_stack;
-
/* Table indexed by tree code giving a string containing a character
classifying the tree code. Possibilities are
t, d, s, c, r, <, 1, 2 and e. See tree.def for details. */
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;
static const char * const tree_node_kind_names[] = {
"lang_type kinds"
};
-/* Hash table for uniquizing IDENTIFIER_NODEs by name. */
-
-#define MAX_HASH_TABLE 1009
-static tree hash_table[MAX_HASH_TABLE]; /* id hash buckets */
-
-/* 0 while creating built-in identifiers. */
-static int do_identifier_warnings;
-
/* Unique id for next decl created. */
static int next_decl_uid;
/* 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)
-/* Each hash table slot is a bucket containing a chain
- of these structures. */
+/* Since we cannot rehash a type after it is in the table, we have to
+ keep the hash code. */
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. */
+ unsigned long hash;
+ tree type;
};
-/* 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];
-
-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));
-static void mark_type_hash PROTO ((void *));
-static void fix_sizetype 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));
+static int mark_tree_hashtable_entry PARAMS((void **, void *));
/* 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) PROTO((tree *));
-void (*lang_unsave_expr_now) PROTO((tree));
+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>")
+/* If non-null, these are language-specific helper functions for
+ unsafe_for_reeval. Return negative to not handle some tree. */
+int (*lang_unsafe_for_reeval) PARAMS ((tree));
+
+/* Set the DECL_ASSEMBLER_NAME for a node. If it is the sort of thing
+ that the assembler should talk about, set DECL_ASSEMBLER_NAME to an
+ appropriate IDENTIFIER_NODE. Otherwise, set it to the
+ ERROR_MARK_NODE to ensure that the assembler does not talk about
+ it. */
+void (*lang_set_decl_assembler_name) PARAMS ((tree));
\f
tree global_trees[TI_MAX];
+tree integer_types[itk_none];
\f
-/* Init the principal obstacks. */
-
-void
-init_obstacks ()
-{
- gcc_obstack_init (&obstack_stack_obstack);
- gcc_obstack_init (&permanent_obstack);
-
- gcc_obstack_init (&temporary_obstack);
- temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
- gcc_obstack_init (&momentary_obstack);
- momentary_firstobj = (char *) obstack_alloc (&momentary_obstack, 0);
- momentary_function_firstobj = momentary_firstobj;
- gcc_obstack_init (&maybepermanent_obstack);
- maybepermanent_firstobj
- = (char *) obstack_alloc (&maybepermanent_obstack, 0);
- gcc_obstack_init (&temp_decl_obstack);
- temp_decl_firstobj = (char *) obstack_alloc (&temp_decl_obstack, 0);
-
- function_obstack = &temporary_obstack;
- function_maybepermanent_obstack = &maybepermanent_obstack;
- current_obstack = &permanent_obstack;
- expression_obstack = &permanent_obstack;
- rtl_obstack = saveable_obstack = &permanent_obstack;
-
- /* Init the hash table of identifiers. */
- bzero ((char *) hash_table, sizeof hash_table);
-
- ggc_add_tree_root (hash_table, MAX_HASH_TABLE);
- ggc_add_root (type_hash_table, TYPE_HASH_SIZE,
- sizeof(struct type_hash *),
- mark_type_hash);
- ggc_add_tree_root (global_trees, TI_MAX);
-}
-
+/* Set the DECL_ASSEMBLER_NAME for DECL. */
void
-gcc_obstack_init (obstack)
- struct obstack *obstack;
-{
- /* Let particular systems override the size of a chunk. */
-#ifndef OBSTACK_CHUNK_SIZE
-#define OBSTACK_CHUNK_SIZE 0
-#endif
- /* Let them override the alloc and free routines too. */
-#ifndef OBSTACK_CHUNK_ALLOC
-#define OBSTACK_CHUNK_ALLOC xmalloc
-#endif
-#ifndef OBSTACK_CHUNK_FREE
-#define OBSTACK_CHUNK_FREE free
-#endif
- _obstack_begin (obstack, OBSTACK_CHUNK_SIZE, 0,
- (void *(*) PROTO ((long))) OBSTACK_CHUNK_ALLOC,
- (void (*) PROTO ((void *))) OBSTACK_CHUNK_FREE);
-}
-
-/* Save all variables describing the current status into the structure
- *P. This function is called whenever we start compiling one
- function in the midst of compiling another. For example, when
- compiling a nested function, or, in C++, a template instantiation
- that is required by the function we are currently compiling.
-
- CONTEXT is the decl_function_context for the function we're about to
- compile; if it isn't current_function_decl, we have to play some games. */
-
-void
-save_tree_status (p)
- struct function *p;
-{
- p->all_types_permanent = all_types_permanent;
- p->momentary_stack = momentary_stack;
- p->maybepermanent_firstobj = maybepermanent_firstobj;
- p->temporary_firstobj = temporary_firstobj;
- p->momentary_firstobj = momentary_firstobj;
- p->momentary_function_firstobj = momentary_function_firstobj;
- p->function_obstack = function_obstack;
- p->function_maybepermanent_obstack = function_maybepermanent_obstack;
- p->current_obstack = current_obstack;
- p->expression_obstack = expression_obstack;
- p->saveable_obstack = saveable_obstack;
- p->rtl_obstack = rtl_obstack;
-
- function_maybepermanent_obstack
- = (struct obstack *) xmalloc (sizeof (struct obstack));
- gcc_obstack_init (function_maybepermanent_obstack);
- maybepermanent_firstobj
- = (char *) obstack_finish (function_maybepermanent_obstack);
-
- function_obstack = (struct obstack *) xmalloc (sizeof (struct obstack));
- gcc_obstack_init (function_obstack);
-
- current_obstack = &permanent_obstack;
- expression_obstack = &permanent_obstack;
- rtl_obstack = saveable_obstack = &permanent_obstack;
-
- temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
- momentary_firstobj = (char *) obstack_finish (&momentary_obstack);
- momentary_function_firstobj = momentary_firstobj;
-}
-
-/* Restore all variables describing the current status from the structure *P.
- This is used after a nested function. */
-
-void
-restore_tree_status (p)
- struct function *p;
-{
- 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. */
- obstack_free (function_maybepermanent_obstack, maybepermanent_firstobj);
- if (obstack_empty_p (function_maybepermanent_obstack))
- {
- obstack_free (function_maybepermanent_obstack, NULL);
- free (function_maybepermanent_obstack);
- }
-
- obstack_free (&temporary_obstack, temporary_firstobj);
- obstack_free (&momentary_obstack, momentary_function_firstobj);
-
- obstack_free (function_obstack, NULL);
- free (function_obstack);
-
- temporary_firstobj = p->temporary_firstobj;
- momentary_firstobj = p->momentary_firstobj;
- momentary_function_firstobj = p->momentary_function_firstobj;
- maybepermanent_firstobj = p->maybepermanent_firstobj;
- function_obstack = p->function_obstack;
- function_maybepermanent_obstack = p->function_maybepermanent_obstack;
- current_obstack = p->current_obstack;
- expression_obstack = p->expression_obstack;
- saveable_obstack = p->saveable_obstack;
- rtl_obstack = p->rtl_obstack;
-}
-\f
-/* Start allocating on the temporary (per function) obstack.
- This is done in start_function before parsing the function body,
- and before each initialization at top level, and to go back
- to temporary allocation after doing permanent_allocation. */
-
-void
-temporary_allocation ()
-{
- /* Note that function_obstack at top level points to temporary_obstack.
- But within a nested function context, it is a separate obstack. */
- current_obstack = function_obstack;
- expression_obstack = function_obstack;
- rtl_obstack = saveable_obstack = function_maybepermanent_obstack;
- momentary_stack = 0;
-}
-
-/* Start allocating on the permanent obstack but don't
- free the temporary data. After calling this, call
- `permanent_allocation' to fully resume permanent allocation status. */
-
-void
-end_temporary_allocation ()
-{
- current_obstack = &permanent_obstack;
- expression_obstack = &permanent_obstack;
- rtl_obstack = saveable_obstack = &permanent_obstack;
-}
-
-/* Resume allocating on the temporary obstack, undoing
- effects of `end_temporary_allocation'. */
-
-void
-resume_temporary_allocation ()
-{
- current_obstack = function_obstack;
- expression_obstack = function_obstack;
- rtl_obstack = saveable_obstack = function_maybepermanent_obstack;
-}
-
-/* While doing temporary allocation, switch to allocating in such a
- way as to save all nodes if the function is inlined. Call
- resume_temporary_allocation to go back to ordinary temporary
- allocation. */
-
-void
-saveable_allocation ()
-{
- /* Note that function_obstack at top level points to temporary_obstack.
- But within a nested function context, it is a separate obstack. */
- expression_obstack = current_obstack = saveable_obstack;
-}
-
-/* Switch to current obstack CURRENT and maybepermanent obstack SAVEABLE,
- recording the previously current obstacks on a stack.
- This does not free any storage in any obstack. */
-
-void
-push_obstacks (current, saveable)
- struct obstack *current, *saveable;
-{
- struct obstack_stack *p;
-
- p = (struct obstack_stack *) obstack_alloc (&obstack_stack_obstack,
- (sizeof (struct obstack_stack)));
-
- p->current = current_obstack;
- p->saveable = saveable_obstack;
- p->expression = expression_obstack;
- p->rtl = rtl_obstack;
- p->next = obstack_stack;
- obstack_stack = p;
-
- current_obstack = current;
- expression_obstack = current;
- rtl_obstack = saveable_obstack = saveable;
-}
-
-/* Save the current set of obstacks, but don't change them. */
-
-void
-push_obstacks_nochange ()
-{
- struct obstack_stack *p;
-
- p = (struct obstack_stack *) obstack_alloc (&obstack_stack_obstack,
- (sizeof (struct obstack_stack)));
-
- p->current = current_obstack;
- p->saveable = saveable_obstack;
- p->expression = expression_obstack;
- p->rtl = rtl_obstack;
- p->next = obstack_stack;
- obstack_stack = p;
-}
-
-/* Pop the obstack selection stack. */
-
-void
-pop_obstacks ()
-{
- struct obstack_stack *p;
-
- p = obstack_stack;
- obstack_stack = p->next;
-
- current_obstack = p->current;
- saveable_obstack = p->saveable;
- expression_obstack = p->expression;
- rtl_obstack = p->rtl;
-
- obstack_free (&obstack_stack_obstack, p);
-}
-
-/* Nonzero if temporary allocation is currently in effect.
- Zero if currently doing permanent allocation. */
-
-int
-allocation_temporary_p ()
-{
- return current_obstack != &permanent_obstack;
-}
-
-/* Go back to allocating on the permanent obstack
- and free everything in the temporary obstack.
-
- FUNCTION_END is true only if we have just finished compiling a function.
- In that case, we also free preserved initial values on the momentary
- obstack. */
-
-void
-permanent_allocation (function_end)
- int function_end;
+set_decl_assembler_name (decl)
+ tree decl;
{
- /* Free up previous temporary obstack data */
- obstack_free (&temporary_obstack, temporary_firstobj);
- if (function_end)
- {
- obstack_free (&momentary_obstack, momentary_function_firstobj);
- momentary_firstobj = momentary_function_firstobj;
- }
+ /* The language-independent code should never use the
+ DECL_ASSEMBLER_NAME for lots of DECLs. Only FUNCTION_DECLs and
+ VAR_DECLs for variables with static storage duration need a real
+ DECL_ASSEMBLER_NAME. */
+ if (TREE_CODE (decl) == FUNCTION_DECL
+ || (TREE_CODE (decl) == VAR_DECL
+ && (TREE_STATIC (decl)
+ || DECL_EXTERNAL (decl)
+ || TREE_PUBLIC (decl))))
+ /* By default, assume the name to use in assembly code is the
+ same as that used in the source language. (That's correct
+ for C, and GCC used to set DECL_ASSEMBLER_NAME to the same
+ value as DECL_NAME in build_decl, so this choice provides
+ backwards compatibility with existing front-ends. */
+ SET_DECL_ASSEMBLER_NAME (decl, DECL_NAME (decl));
else
- obstack_free (&momentary_obstack, momentary_firstobj);
- obstack_free (function_maybepermanent_obstack, maybepermanent_firstobj);
- obstack_free (&temp_decl_obstack, temp_decl_firstobj);
-
- current_obstack = &permanent_obstack;
- expression_obstack = &permanent_obstack;
- rtl_obstack = saveable_obstack = &permanent_obstack;
-}
-
-/* Save permanently everything on the maybepermanent_obstack. */
-
-void
-preserve_data ()
-{
- maybepermanent_firstobj
- = (char *) obstack_alloc (function_maybepermanent_obstack, 0);
+ /* Nobody should ever be asking for the DECL_ASSEMBLER_NAME of
+ these DECLs -- unless they're in language-dependent code, in
+ which case lang_set_decl_assembler_name should handle things. */
+ abort ();
}
+\f
+/* Init the principal obstacks. */
void
-preserve_initializer ()
+init_obstacks ()
{
- struct momentary_level *tem;
- char *old_momentary;
-
- temporary_firstobj
- = (char *) obstack_alloc (&temporary_obstack, 0);
- maybepermanent_firstobj
- = (char *) obstack_alloc (function_maybepermanent_obstack, 0);
-
- old_momentary = momentary_firstobj;
- momentary_firstobj
- = (char *) obstack_alloc (&momentary_obstack, 0);
- if (momentary_firstobj != old_momentary)
- for (tem = momentary_stack; tem; tem = tem->prev)
- tem->base = momentary_firstobj;
-}
+ gcc_obstack_init (&permanent_obstack);
-/* Start allocating new rtl in current_obstack.
- Use resume_temporary_allocation
- to go back to allocating rtl in saveable_obstack. */
+ /* 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
-rtl_in_current_obstack ()
-{
- rtl_obstack = current_obstack;
+ /* Set lang_set_decl_set_assembler_name to a default value. */
+ lang_set_decl_assembler_name = set_decl_assembler_name;
}
-/* Start allocating rtl from saveable_obstack. Intended to be used after
- a call to push_obstacks_nochange. */
-
-void
-rtl_in_saveable_obstack ()
-{
- rtl_obstack = saveable_obstack;
-}
\f
-/* Allocate SIZE bytes in the current obstack
- and return a pointer to them.
- In practice the current obstack is always the temporary one. */
-
-char *
-oballoc (size)
- int size;
-{
- return (char *) obstack_alloc (current_obstack, size);
-}
-
-/* Free the object PTR in the current obstack
- as well as everything allocated since PTR.
- In practice the current obstack is always the temporary one. */
-
-void
-obfree (ptr)
- char *ptr;
-{
- obstack_free (current_obstack, ptr);
-}
-
/* Allocate SIZE bytes in the permanent obstack
and return a pointer to them. */
long size;
{
char *rval = (char *) obstack_alloc (&permanent_obstack, nelem * size);
- bzero (rval, nelem * size);
+ memset (rval, 0, nelem * size);
return rval;
}
-/* Allocate SIZE bytes in the saveable obstack
- and return a pointer to them. */
-
-char *
-savealloc (size)
- int size;
-{
- return (char *) obstack_alloc (saveable_obstack, size);
-}
-
-/* Allocate SIZE bytes in the expression obstack
- and return a pointer to them. */
-
-char *
-expralloc (size)
- int size;
-{
- return (char *) obstack_alloc (expression_obstack, size);
-}
-\f
-/* Print out which obstack an object is in. */
-
-void
-print_obstack_name (object, file, prefix)
- char *object;
- FILE *file;
- const char *prefix;
+/* Compute the number of bytes occupied by 'node'. This routine only
+ looks at TREE_CODE and, if the code is TREE_VEC, TREE_VEC_LENGTH. */
+size_t
+tree_size (node)
+ tree node;
{
- struct obstack *obstack = NULL;
- const char *obstack_name = NULL;
- struct function *p;
-
- for (p = outer_function_chain; p; p = p->next)
- {
- if (_obstack_allocated_p (p->function_obstack, object))
- {
- obstack = p->function_obstack;
- obstack_name = "containing function obstack";
- }
- if (_obstack_allocated_p (p->function_maybepermanent_obstack, object))
- {
- obstack = p->function_maybepermanent_obstack;
- obstack_name = "containing function maybepermanent obstack";
- }
- }
+ enum tree_code code = TREE_CODE (node);
- if (_obstack_allocated_p (&obstack_stack_obstack, object))
- {
- obstack = &obstack_stack_obstack;
- obstack_name = "obstack_stack_obstack";
- }
- else if (_obstack_allocated_p (function_obstack, object))
- {
- obstack = function_obstack;
- obstack_name = "function obstack";
- }
- else if (_obstack_allocated_p (&permanent_obstack, object))
- {
- obstack = &permanent_obstack;
- obstack_name = "permanent_obstack";
- }
- else if (_obstack_allocated_p (&momentary_obstack, object))
- {
- obstack = &momentary_obstack;
- obstack_name = "momentary_obstack";
- }
- else if (_obstack_allocated_p (function_maybepermanent_obstack, object))
- {
- obstack = function_maybepermanent_obstack;
- obstack_name = "function maybepermanent obstack";
- }
- else if (_obstack_allocated_p (&temp_decl_obstack, object))
- {
- obstack = &temp_decl_obstack;
- obstack_name = "temp_decl_obstack";
- }
-
- /* Check to see if the object is in the free area of the obstack. */
- if (obstack != NULL)
+ switch (TREE_CODE_CLASS (code))
{
- if (object >= obstack->next_free
- && object < obstack->chunk_limit)
- fprintf (file, "%s in free portion of obstack %s",
- prefix, obstack_name);
- else
- fprintf (file, "%s allocated from %s", prefix, obstack_name);
- }
- else
- fprintf (file, "%s not allocated from any obstack", prefix);
-}
-
-void
-debug_obstack (object)
- char *object;
-{
- print_obstack_name (object, stderr, "object");
- fprintf (stderr, ".\n");
-}
-
-/* Return 1 if OBJ is in the permanent obstack.
- This is slow, and should be used only for debugging.
- Use TREE_PERMANENT for other purposes. */
-
-int
-object_permanent_p (obj)
- tree obj;
-{
- return _obstack_allocated_p (&permanent_obstack, obj);
-}
-\f
-/* Start a level of momentary allocation.
- In C, each compound statement has its own level
- and that level is freed at the end of each statement.
- All expression nodes are allocated in the momentary allocation level. */
-
-void
-push_momentary ()
-{
- struct momentary_level *tem
- = (struct momentary_level *) obstack_alloc (&momentary_obstack,
- sizeof (struct momentary_level));
- tem->prev = momentary_stack;
- tem->base = (char *) obstack_base (&momentary_obstack);
- tem->obstack = expression_obstack;
- momentary_stack = tem;
- expression_obstack = &momentary_obstack;
-}
-
-/* Set things up so the next clear_momentary will only clear memory
- past our present position in momentary_obstack. */
-
-void
-preserve_momentary ()
-{
- momentary_stack->base = (char *) obstack_base (&momentary_obstack);
-}
-
-/* Free all the storage in the current momentary-allocation level.
- In C, this happens at the end of each statement. */
-
-void
-clear_momentary ()
-{
- obstack_free (&momentary_obstack, momentary_stack->base);
-}
-
-/* Discard a level of momentary allocation.
- In C, this happens at the end of each compound statement.
- Restore the status of expression node allocation
- that was in effect before this level was created. */
-
-void
-pop_momentary ()
-{
- struct momentary_level *tem = momentary_stack;
- momentary_stack = tem->prev;
- expression_obstack = tem->obstack;
- /* We can't free TEM from the momentary_obstack, because there might
- be objects above it which have been saved. We can free back to the
- stack of the level we are popping off though. */
- obstack_free (&momentary_obstack, tem->base);
-}
-
-/* Pop back to the previous level of momentary allocation,
- but don't free any momentary data just yet. */
+ case 'd': /* A decl node */
+ return sizeof (struct tree_decl);
-void
-pop_momentary_nofree ()
-{
- struct momentary_level *tem = momentary_stack;
- momentary_stack = tem->prev;
- expression_obstack = tem->obstack;
-}
+ case 't': /* a type node */
+ return sizeof (struct tree_type);
-/* Call when starting to parse a declaration:
- make expressions in the declaration last the length of the function.
- Returns an argument that should be passed to resume_momentary later. */
+ case 'b': /* a lexical block node */
+ return sizeof (struct tree_block);
-int
-suspend_momentary ()
-{
- register int tem = expression_obstack == &momentary_obstack;
- expression_obstack = saveable_obstack;
- return tem;
-}
+ case 'r': /* a reference */
+ case 'e': /* an expression */
+ case 's': /* an expression with side effects */
+ case '<': /* a comparison expression */
+ case '1': /* a unary arithmetic expression */
+ case '2': /* a binary arithmetic expression */
+ return (sizeof (struct tree_exp)
+ + (TREE_CODE_LENGTH (code) - 1) * sizeof (char *));
-/* Call when finished parsing a declaration:
- restore the treatment of node-allocation that was
- in effect before the suspension.
- YES should be the value previously returned by suspend_momentary. */
+ case 'c': /* a constant */
+ /* 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
+ to varying size and alignment of `double'. */
+ if (code == INTEGER_CST)
+ return sizeof (struct tree_int_cst);
+ else if (code == REAL_CST)
+ return sizeof (struct tree_real_cst);
+ else
+ return (sizeof (struct tree_common)
+ + TREE_CODE_LENGTH (code) * sizeof (char *));
-void
-resume_momentary (yes)
- int yes;
-{
- if (yes)
- expression_obstack = &momentary_obstack;
-}
-\f
-/* Init the tables indexed by tree code.
- Note that languages can add to these tables to define their own codes. */
+ case 'x': /* something random, like an identifier. */
+ {
+ size_t length;
+ length = (sizeof (struct tree_common)
+ + TREE_CODE_LENGTH (code) * sizeof (char *));
+ if (code == TREE_VEC)
+ length += (TREE_VEC_LENGTH (node) - 1) * sizeof (char *);
+ return length;
+ }
-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);
+ default:
+ abort ();
+ }
}
/* Return a newly allocated node of code CODE.
- Initialize the node's unique id and its TREE_PERMANENT flag.
For decl and type nodes, some other fields are initialized.
The rest of the node is initialized to zero.
{
register tree t;
register int type = TREE_CODE_CLASS (code);
- register int length = 0;
- register struct obstack *obstack = current_obstack;
+ register size_t length;
#ifdef GATHER_STATISTICS
register tree_node_kind kind;
#endif
+ struct tree_common ttmp;
+
+ /* We can't allocate a TREE_VEC without knowing how many elements
+ it will have. */
+ if (code == TREE_VEC)
+ abort ();
+
+ TREE_SET_CODE ((tree)&ttmp, code);
+ length = tree_size ((tree)&ttmp);
+#ifdef GATHER_STATISTICS
switch (type)
{
case 'd': /* A decl node */
-#ifdef GATHER_STATISTICS
kind = d_kind;
-#endif
- length = sizeof (struct tree_decl);
- /* All decls in an inline function need to be saved. */
- if (obstack != &permanent_obstack)
- obstack = saveable_obstack;
-
- /* PARM_DECLs go on the context of the parent. If this is a nested
- function, then we must allocate the PARM_DECL on the parent's
- obstack, so that they will live to the end of the parent's
- closing brace. This is necessary in case we try to inline the
- function into its parent.
-
- 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.
-
- See comment in restore_tree_status for why we can't put this
- in function_obstack. */
- if (code == PARM_DECL && obstack != &permanent_obstack)
- {
- tree context = 0;
- if (current_function_decl)
- context = decl_function_context (current_function_decl);
-
- if (context)
- obstack
- = find_function_data (context)->function_maybepermanent_obstack;
- }
break;
case 't': /* a type node */
-#ifdef GATHER_STATISTICS
kind = t_kind;
-#endif
- length = sizeof (struct tree_type);
- /* All data types are put where we can preserve them if nec. */
- if (obstack != &permanent_obstack)
- obstack = all_types_permanent ? &permanent_obstack : saveable_obstack;
break;
case 'b': /* a lexical block */
-#ifdef GATHER_STATISTICS
kind = b_kind;
-#endif
- length = sizeof (struct tree_block);
- /* All BLOCK nodes are put where we can preserve them if nec. */
- if (obstack != &permanent_obstack)
- obstack = saveable_obstack;
break;
case 's': /* an expression with side effects */
-#ifdef GATHER_STATISTICS
kind = s_kind;
- goto usual_kind;
-#endif
+ break;
+
case 'r': /* a reference */
-#ifdef GATHER_STATISTICS
kind = r_kind;
- goto usual_kind;
-#endif
+ break;
+
case 'e': /* an expression */
case '<': /* a comparison expression */
case '1': /* a unary arithmetic expression */
case '2': /* a binary arithmetic expression */
-#ifdef GATHER_STATISTICS
kind = e_kind;
- usual_kind:
-#endif
- obstack = expression_obstack;
- /* All BIND_EXPR nodes are put where we can preserve them if nec. */
- if (code == BIND_EXPR && obstack != &permanent_obstack)
- obstack = saveable_obstack;
- length = sizeof (struct tree_exp)
- + (tree_code_length[(int) code] - 1) * sizeof (char *);
break;
case 'c': /* a constant */
-#ifdef GATHER_STATISTICS
kind = c_kind;
-#endif
- obstack = expression_obstack;
-
- /* 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
- to varying size and alignment of `double'. */
-
- if (code == INTEGER_CST)
- length = sizeof (struct tree_int_cst);
- else if (code == REAL_CST)
- length = sizeof (struct tree_real_cst);
- else
- length = sizeof (struct tree_common)
- + tree_code_length[(int) code] * sizeof (char *);
break;
case 'x': /* something random, like an identifier. */
-#ifdef GATHER_STATISTICS
if (code == IDENTIFIER_NODE)
kind = id_kind;
else if (code == OP_IDENTIFIER)
kind = vec_kind;
else
kind = x_kind;
-#endif
- length = sizeof (struct tree_common)
- + tree_code_length[(int) code] * sizeof (char *);
- /* Identifier nodes are always permanent since they are
- unique in a compiler run. */
- if (code == IDENTIFIER_NODE) obstack = &permanent_obstack;
break;
default:
abort ();
}
- 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
+ t = ggc_alloc_tree (length);
+
+ memset ((PTR) t, 0, length);
+
TREE_SET_CODE (t, code);
- if (obstack == &permanent_obstack)
- TREE_PERMANENT (t) = 1;
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_filename;
+ DECL_SOURCE_FILE (t) =
+ (input_filename) ? input_filename : "<built-in>";
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_ALIGN (t) = char_type_node ? TYPE_ALIGN (char_type_node) : 0;
+ TYPE_USER_ALIGN (t) = 0;
TYPE_MAIN_VARIANT (t) = t;
- TYPE_OBSTACK (t) = obstack;
TYPE_ATTRIBUTES (t) = NULL_TREE;
#ifdef SET_DEFAULT_TYPE_ATTRIBUTES
SET_DEFAULT_TYPE_ATTRIBUTES (t);
operands are. */
TREE_SIDE_EFFECTS (t) = 1;
break;
-
+
default:
break;
}
/* A front-end can reset this to an appropriate function if types need
special handling. */
-tree (*make_lang_type_fn) PROTO((enum tree_code)) = make_node;
+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
+tree
make_lang_type (code)
enum tree_code 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. 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_CHAIN is zero and it has a fresh uid. */
tree
copy_node (node)
{
register tree t;
register enum tree_code code = TREE_CODE (node);
- register int length = 0;
-
- switch (TREE_CODE_CLASS (code))
- {
- case 'd': /* A decl node */
- length = sizeof (struct tree_decl);
- break;
-
- case 't': /* a type node */
- length = sizeof (struct tree_type);
- break;
-
- case 'b': /* a lexical block node */
- length = sizeof (struct tree_block);
- break;
-
- case 'r': /* a reference */
- case 'e': /* an expression */
- case 's': /* an expression with side effects */
- case '<': /* a comparison expression */
- 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 *);
- break;
-
- case 'c': /* a constant */
- /* 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
- to varying size and alignment of `double'. */
- if (code == INTEGER_CST)
- length = sizeof (struct tree_int_cst);
- else if (code == REAL_CST)
- length = sizeof (struct tree_real_cst);
- else
- length = (sizeof (struct tree_common)
- + tree_code_length[(int) code] * sizeof (char *));
- break;
-
- case 'x': /* something random, like an identifier. */
- length = sizeof (struct tree_common)
- + tree_code_length[(int) code] * sizeof (char *);
- if (code == TREE_VEC)
- length += (TREE_VEC_LENGTH (node) - 1) * sizeof (char *);
- }
+ register size_t length;
- if (ggc_p)
- t = ggc_alloc_tree (length);
- else
- t = (tree) obstack_alloc (current_obstack, length);
+ length = tree_size (node);
+ t = ggc_alloc_tree (length);
memcpy (t, node, length);
TREE_CHAIN (t) = 0;
else if (TREE_CODE_CLASS (code) == 't')
{
TYPE_UID (t) = next_type_uid++;
- TYPE_OBSTACK (t) = current_obstack;
-
/* The following is so that the debug code for
the copy is different from the original type.
The two statements usually duplicate each other
TYPE_SYMTAB_ADDRESS (t) = 0;
}
- TREE_PERMANENT (t) = (current_obstack == &permanent_obstack);
-
return t;
}
}
return head;
}
-\f
-#define HASHBITS 30
-
-/* Return an IDENTIFIER_NODE whose name is TEXT (a null-terminated string).
- If an identifier with that name has previously been referred to,
- the same node is returned this time. */
-
-tree
-get_identifier (text)
- register const char *text;
-{
- register int hi;
- register int i;
- register tree idp;
- register int len, hash_len;
-
- /* Compute length of text in len. */
- len = strlen (text);
-
- /* Decide how much of that length to hash on */
- hash_len = len;
- if (warn_id_clash && (unsigned)len > id_clash_len)
- hash_len = id_clash_len;
-
- /* Compute hash code */
- hi = hash_len * 613 + (unsigned) text[0];
- for (i = 1; i < hash_len; i += 2)
- hi = ((hi * 613) + (unsigned) (text[i]));
-
- hi &= (1 << HASHBITS) - 1;
- hi %= MAX_HASH_TABLE;
-
- /* 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 */
-
- /* Not found; optionally warn about a similar identifier */
- if (warn_id_clash && do_identifier_warnings && (unsigned)len >= id_clash_len)
- for (idp = hash_table[hi]; idp; idp = TREE_CHAIN (idp))
- if (!strncmp (IDENTIFIER_POINTER (idp), text, id_clash_len))
- {
- warning ("`%s' and `%s' identical in first %d characters",
- IDENTIFIER_POINTER (idp), text, id_clash_len);
- break;
- }
-
- if (tree_code_length[(int) IDENTIFIER_NODE] < 0)
- abort (); /* set_identifier_size hasn't been called. */
-
- /* Not found, create one, add to chain */
- idp = make_node (IDENTIFIER_NODE);
- IDENTIFIER_LENGTH (idp) = len;
-#ifdef GATHER_STATISTICS
- id_string_size += len;
-#endif
-
- 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;
- return idp; /* <-- return if created */
-}
-
-/* If an identifier with the name TEXT (a null-terminated string) has
- previously been referred to, return that node; otherwise return
- NULL_TREE. */
-
-tree
-maybe_get_identifier (text)
- register const char *text;
-{
- register int hi;
- register int i;
- register tree idp;
- register int len, hash_len;
-
- /* Compute length of text in len. */
- len = strlen (text);
-
- /* Decide how much of that length to hash on */
- hash_len = len;
- if (warn_id_clash && (unsigned)len > id_clash_len)
- hash_len = id_clash_len;
-
- /* Compute hash code */
- hi = hash_len * 613 + (unsigned) text[0];
- for (i = 1; i < hash_len; i += 2)
- hi = ((hi * 613) + (unsigned) (text[i]));
-
- hi &= (1 << HASHBITS) - 1;
- hi %= MAX_HASH_TABLE;
-
- /* 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 NULL_TREE;
-}
-
-/* Enable warnings on similar identifiers (if requested).
- Done after the built-in identifiers are created. */
-
-void
-start_identifier_warnings ()
-{
- do_identifier_warnings = 1;
-}
-
-/* Record the size of an identifier node for the language in use.
- SIZE is the total size in bytes.
- This is called by the language-specific files. This must be
- called before allocating any identifiers. */
-void
-set_identifier_size (size)
- int size;
-{
- tree_code_length[(int) IDENTIFIER_NODE]
- = (size - sizeof (struct tree_common)) / sizeof (tree);
-}
\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. */
+ memset ((char *) &d, 0, 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
int len;
const char *str;
{
- /* Put the string in saveable_obstack since it will be placed in the RTL
- for an "asm" statement and will also be kept around a while if
- deferring constant output in varasm.c. */
-
register tree s = make_node (STRING_CST);
+
TREE_STRING_LENGTH (s) = len;
- if (ggc_p)
- TREE_STRING_POINTER (s) = ggc_alloc_string (str, len);
- else
- TREE_STRING_POINTER (s) = obstack_copy0 (saveable_obstack, str, len);
+ TREE_STRING_POINTER (s) = ggc_alloc_string (str, len);
+
return s;
}
{
register tree t;
register int length = (len-1) * sizeof (tree) + sizeof (struct tree_vec);
- register struct obstack *obstack = current_obstack;
#ifdef GATHER_STATISTICS
tree_node_counts[(int)vec_kind]++;
tree_node_sizes[(int)vec_kind] += length;
#endif
- if (ggc_p)
- t = ggc_alloc_tree (length);
- else
- {
- t = (tree) obstack_alloc (obstack, length);
- bzero ((PTR) t, length);
- }
+ t = ggc_alloc_tree (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;
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). */
return t;
}
-/* Similar, but build on the temp_decl_obstack. */
-
-tree
-build_decl_list (parm, value)
- tree parm, value;
-{
- 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;
- return node;
-}
-
-/* Similar, but build on the expression_obstack. */
-
-tree
-build_expr_list (parm, value)
- tree parm, value;
-{
- register tree node;
- register struct obstack *ambient_obstack = current_obstack;
- current_obstack = expression_obstack;
- node = build_tree_list (parm, value);
- current_obstack = ambient_obstack;
- return node;
-}
-
/* Return a newly created TREE_LIST node whose
purpose and value fields are PARM and VALUE
and whose TREE_CHAIN is CHAIN. */
tree_cons (purpose, value, chain)
tree purpose, value, chain;
{
-#if 0
- register tree node = make_node (TREE_LIST);
-#else
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));
- }
+ node = ggc_alloc_tree (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
-
TREE_SET_CODE (node, TREE_LIST);
- if (current_obstack == &permanent_obstack)
- TREE_PERMANENT (node) = 1;
-#endif
-
TREE_CHAIN (node) = chain;
TREE_PURPOSE (node) = purpose;
TREE_VALUE (node) = value;
return node;
}
-/* Similar, but build on the temp_decl_obstack. */
-
-tree
-decl_tree_cons (purpose, value, chain)
- tree purpose, value, chain;
-{
- 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;
- return node;
-}
-
-/* Similar, but build on the expression_obstack. */
-
-tree
-expr_tree_cons (purpose, value, chain)
- tree purpose, value, chain;
-{
- register tree node;
- register struct obstack *ambient_obstack = current_obstack;
- current_obstack = expression_obstack;
- node = tree_cons (purpose, value, chain);
- current_obstack = ambient_obstack;
- return node;
-}
-
-/* Same as `tree_cons' but make a permanent object. */
-
-tree
-perm_tree_cons (purpose, value, chain)
- tree purpose, value, chain;
-{
- register tree node;
- register struct obstack *ambient_obstack = current_obstack;
- current_obstack = &permanent_obstack;
-
- node = tree_cons (purpose, value, chain);
- current_obstack = ambient_obstack;
- return node;
-}
-
-/* Same as `tree_cons', but make this node temporary, regardless. */
-
-tree
-temp_tree_cons (purpose, value, chain)
- tree purpose, value, chain;
-{
- register tree node;
- register struct obstack *ambient_obstack = current_obstack;
- current_obstack = &temporary_obstack;
-
- node = tree_cons (purpose, value, chain);
- current_obstack = ambient_obstack;
- return node;
-}
-
-/* Same as `tree_cons', but save this node if the function's RTL is saved. */
-
-tree
-saveable_tree_cons (purpose, value, chain)
- tree purpose, value, chain;
-{
- register tree node;
- register struct obstack *ambient_obstack = current_obstack;
- current_obstack = saveable_obstack;
-
- node = tree_cons (purpose, value, chain);
- current_obstack = ambient_obstack;
- return node;
-}
\f
/* Return the size nominally occupied by an object of type TYPE
when it resides in memory. The value is measured in units of bytes,
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 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;
+ }
+
+ /* 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. */
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;
#endif
case ARRAY_REF:
+ case ARRAY_RANGE_REF:
if (TREE_CODE (TYPE_SIZE (TREE_TYPE (arg))) == INTEGER_CST
&& TREE_CODE (TREE_OPERAND (arg, 1)) == INTEGER_CST)
return staticp (TREE_OPERAND (arg, 0));
/* 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))
value was computed on both sides of the jump. So make sure it isn't
eliminated as dead. */
TREE_SIDE_EFFECTS (t) = 1;
+ TREE_READONLY (t) = 1;
return t;
}
case GOTO_SUBROUTINE_EXPR:
case RTL_EXPR:
return 0;
- case CALL_EXPR:
- return 2;
case WITH_CLEANUP_EXPR:
/* Should be defined to be 2. */
return 1;
case METHOD_CALL_EXPR:
return 3;
default:
- return tree_code_length [(int) code];
+ return TREE_CODE_LENGTH (code);
}
}
switch (TREE_CODE (expr))
{
case SAVE_EXPR:
- if (!SAVE_EXPR_PERSISTENT_P (expr))
+ 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))
+ if (RTL_EXPR_SEQUENCE (expr) != 0)
abort ();
break;
- case CALL_EXPR:
- CALL_EXPR_RTL (expr) = 0;
- break;
-
default:
- if (lang_unsave_expr_now)
+ if (lang_unsave_expr_now != 0)
(*lang_unsave_expr_now) (expr);
break;
}
enum tree_code code;
/* There's nothing to do for NULL_TREE. */
- if (!expr)
+ if (expr == 0)
return;
unsave_expr_1 (expr);
code = TREE_CODE (expr);
- if (code == CALL_EXPR
- && TREE_OPERAND (expr, 1)
- && TREE_CODE (TREE_OPERAND (expr, 1)) == TREE_LIST)
- {
- tree exp = TREE_OPERAND (expr, 1);
- while (exp)
- {
- unsave_expr_now_r (TREE_VALUE (exp));
- exp = TREE_CHAIN (exp);
- }
- }
-
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 */
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 's': /* an expression with side effects */
case '1': /* a unary arithmetic expression */
{
int i;
-
+
for (i = first_rtl_op (code) - 1; i >= 0; i--)
unsave_expr_now_r (TREE_OPERAND (expr, i));
}
unsave_expr_now (expr)
tree expr;
{
- if (lang_unsave)
+ 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:
+ if (lang_unsafe_for_reeval != 0)
+ {
+ tmp = (*lang_unsafe_for_reeval) (expr);
+ if (tmp >= 0)
+ return tmp;
+ }
+ 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. */
contains_placeholder_p (exp)
tree exp;
{
- register enum tree_code code = TREE_CODE (exp);
+ register enum tree_code code;
int result;
+ if (!exp)
+ return 0;
+
/* If we have a WITH_RECORD_EXPR, it "cancels" any PLACEHOLDER_EXPR
in it since it is supplying a value for it. */
+ code = TREE_CODE (exp);
if (code == WITH_RECORD_EXPR)
return 0;
else if (code == 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;
-
+
+ if (code == NON_LVALUE_EXPR)
+ return op0;
+
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 ();
}
stabilize_reference_1 (TREE_OPERAND (ref, 1)));
break;
+ case ARRAY_RANGE_REF:
+ result = build_nt (ARRAY_RANGE_REF,
+ stabilize_reference (TREE_OPERAND (ref, 0)),
+ stabilize_reference_1 (TREE_OPERAND (ref, 1)));
+ break;
+
case COMPOUND_EXPR:
/* We cannot wrap the first expression in a SAVE_EXPR, as then
it wouldn't be ignored. This matters when dealing with
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 int length;
register int i;
int fro;
+ int constant;
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. */
+ /* Below, we automatically set TREE_SIDE_EFFECTS and TREE_READONLY 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);
+ /* Expressions without side effects may be constant if their
+ arguments are as well. */
+ constant = (TREE_CODE_CLASS (code) == '<'
+ || TREE_CODE_CLASS (code) == '1'
+ || TREE_CODE_CLASS (code) == '2'
+ || TREE_CODE_CLASS (code) == 'c');
+
if (length == 2)
{
/* This is equivalent to the loop below, but faster. */
register tree arg0 = va_arg (p, tree);
register tree arg1 = va_arg (p, tree);
+
TREE_OPERAND (t, 0) = arg0;
TREE_OPERAND (t, 1) = arg1;
+ TREE_READONLY (t) = 1;
if (arg0 && fro > 0)
{
if (TREE_SIDE_EFFECTS (arg0))
TREE_SIDE_EFFECTS (t) = 1;
- if (TREE_RAISES (arg0))
- TREE_RAISES (t) = 1;
+ if (!TREE_READONLY (arg0))
+ TREE_READONLY (t) = 0;
+ if (!TREE_CONSTANT (arg0))
+ constant = 0;
}
+
if (arg1 && fro > 1)
{
if (TREE_SIDE_EFFECTS (arg1))
TREE_SIDE_EFFECTS (t) = 1;
- if (TREE_RAISES (arg1))
- TREE_RAISES (t) = 1;
+ if (!TREE_READONLY (arg1))
+ TREE_READONLY (t) = 0;
+ if (!TREE_CONSTANT (arg1))
+ constant = 0;
}
}
else if (length == 1)
{
register tree arg0 = va_arg (p, tree);
- /* Call build1 for this! */
+ /* The only one-operand cases we handle here are those with side-effects.
+ Others are handled with build1. So don't bother checked if the
+ arg has side-effects since we'll already have set it.
+
+ ??? This really should use build1 too. */
if (TREE_CODE_CLASS (code) != 's')
abort ();
TREE_OPERAND (t, 0) = arg0;
- if (fro > 0)
- {
- if (arg0 && TREE_SIDE_EFFECTS (arg0))
- TREE_SIDE_EFFECTS (t) = 1;
- TREE_RAISES (t) = (arg0 && TREE_RAISES (arg0));
- }
}
else
{
for (i = 0; i < length; i++)
{
register tree operand = va_arg (p, tree);
+
TREE_OPERAND (t, i) = operand;
if (operand && fro > i)
{
if (TREE_SIDE_EFFECTS (operand))
TREE_SIDE_EFFECTS (t) = 1;
- if (TREE_RAISES (operand))
- TREE_RAISES (t) = 1;
+ if (!TREE_CONSTANT (operand))
+ constant = 0;
}
}
}
va_end (p);
+
+ TREE_CONSTANT (t) = constant;
return t;
}
tree type;
tree node;
{
- register struct obstack *obstack = expression_obstack;
register int length;
#ifdef GATHER_STATISTICS
register tree_node_kind kind;
kind = e_kind;
#endif
+#ifdef ENABLE_CHECKING
+ if (TREE_CODE_CLASS (code) == '2'
+ || TREE_CODE_CLASS (code) == '<'
+ || TREE_CODE_LENGTH (code) != 1)
+ abort ();
+#endif /* ENABLE_CHECKING */
+
length = sizeof (struct tree_exp);
- if (ggc_p)
- t = ggc_alloc_tree (length);
- else
- {
- t = (tree) obstack_alloc (obstack, length);
- memset ((PTR) t, 0, length);
- }
+ t = ggc_alloc_tree (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);
- if (obstack == &permanent_obstack)
- TREE_PERMANENT (t) = 1;
-
+ TREE_TYPE (t) = type;
+ TREE_COMPLEXITY (t) = 0;
TREE_OPERAND (t, 0) = node;
if (node && first_rtl_op (code) != 0)
{
- if (TREE_SIDE_EFFECTS (node))
- TREE_SIDE_EFFECTS (t) = 1;
- if (TREE_RAISES (node))
- TREE_RAISES (t) = 1;
+ TREE_SIDE_EFFECTS (t) = TREE_SIDE_EFFECTS (node);
+ TREE_READONLY (t) = TREE_READONLY (node);
}
switch (code)
/* All of these have side-effects, no matter what their
operands are. */
TREE_SIDE_EFFECTS (t) = 1;
+ TREE_READONLY (t) = 0;
break;
-
+
default:
+ if (TREE_CODE_CLASS (code) == '1' && node && TREE_CONSTANT (node))
+ TREE_CONSTANT (t) = 1;
break;
}
or even garbage if their values do not matter. */
tree
-build_nt VPROTO((enum tree_code code, ...))
-{
-#ifndef ANSI_PROTOTYPES
- enum tree_code code;
-#endif
- va_list p;
- register tree t;
- register int length;
- register int i;
-
- VA_START (p, code);
-
-#ifndef ANSI_PROTOTYPES
- code = va_arg (p, enum tree_code);
-#endif
-
- t = make_node (code);
- length = tree_code_length[(int) code];
-
- for (i = 0; i < length; i++)
- TREE_OPERAND (t, i) = va_arg (p, tree);
-
- va_end (p);
- return t;
-}
-
-/* Similar to `build_nt', except we build
- on the temp_decl_obstack, regardless. */
-
-tree
-build_parse_node VPROTO((enum tree_code code, ...))
+build_nt VPARAMS ((enum tree_code code, ...))
{
#ifndef ANSI_PROTOTYPES
enum tree_code code;
#endif
- register struct obstack *ambient_obstack = expression_obstack;
va_list p;
register tree t;
register int length;
code = va_arg (p, enum tree_code);
#endif
- 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);
va_end (p);
- expression_obstack = ambient_obstack;
return t;
}
as the type can suppress useless errors in the use of this variable. */
DECL_NAME (t) = name;
- DECL_ASSEMBLER_NAME (t) = name;
TREE_TYPE (t) = type;
if (code == VAR_DECL || code == PARM_DECL || code == RESULT_DECL)
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_SUBBLOCKS (block) = subblocks;
BLOCK_SUPERCONTEXT (block) = supercontext;
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;
+ unsigned int hashcode;
tree ntype;
- 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));
- pop_obstacks ();
}
return ttype;
}
-/* Return a 1 if ATTR_NAME and ATTR_ARGS is valid for either declaration DECL
- or type TYPE and 0 otherwise. Validity is determined the configuration
- macros VALID_MACHINE_DECL_ATTRIBUTE and VALID_MACHINE_TYPE_ATTRIBUTE. */
+/* Default value of target.valid_decl_attribute_p and
+ target.valid_type_attribute_p that always returns false. */
+
+int
+default_valid_attribute_p PARAMS ((attr_name, attr_args, decl, type))
+ tree attr_name ATTRIBUTE_UNUSED;
+ tree attr_args ATTRIBUTE_UNUSED;
+ tree decl ATTRIBUTE_UNUSED;
+ tree type ATTRIBUTE_UNUSED;
+{
+ return 0;
+}
+
+/* Return 1 if ATTR_NAME and ATTR_ARGS is valid for either declaration
+ DECL or type TYPE and 0 otherwise. Validity is determined the
+ target functions valid_decl_attribute and valid_machine_attribute. */
int
valid_machine_attribute (attr_name, attr_args, decl, type)
- tree attr_name;
- tree attr_args ATTRIBUTE_UNUSED;
- tree decl ATTRIBUTE_UNUSED;
- tree type ATTRIBUTE_UNUSED;
-{
- int validated = 0;
-#ifdef VALID_MACHINE_DECL_ATTRIBUTE
- tree decl_attr_list = decl != 0 ? DECL_MACHINE_ATTRIBUTES (decl) : 0;
-#endif
-#ifdef VALID_MACHINE_TYPE_ATTRIBUTE
- tree type_attr_list = TYPE_ATTRIBUTES (type);
-#endif
+ tree attr_name;
+ tree attr_args;
+ tree decl;
+ tree type;
+{
+ tree type_attrs;
if (TREE_CODE (attr_name) != IDENTIFIER_NODE)
abort ();
-#ifdef VALID_MACHINE_DECL_ATTRIBUTE
- if (decl != 0
- && VALID_MACHINE_DECL_ATTRIBUTE (decl, decl_attr_list, attr_name, attr_args))
+ if (decl)
{
- tree attr = lookup_attribute (IDENTIFIER_POINTER (attr_name),
- decl_attr_list);
+ tree decl_attrs = DECL_MACHINE_ATTRIBUTES (decl);
- if (attr != NULL_TREE)
- {
- /* Override existing arguments. Declarations are unique so we can
- modify this in place. */
- TREE_VALUE (attr) = attr_args;
- }
- else
+ if ((*target.valid_decl_attribute) (decl, decl_attrs, attr_name,
+ attr_args))
{
- decl_attr_list = tree_cons (attr_name, attr_args, decl_attr_list);
- decl = build_decl_attribute_variant (decl, decl_attr_list);
- }
+ tree attr = lookup_attribute (IDENTIFIER_POINTER (attr_name),
+ decl_attrs);
+
+ if (attr != NULL_TREE)
+ {
+ /* Override existing arguments. Declarations are unique
+ so we can modify this in place. */
+ TREE_VALUE (attr) = attr_args;
+ }
+ else
+ {
+ decl_attrs = tree_cons (attr_name, attr_args, decl_attrs);
+ decl = build_decl_attribute_variant (decl, decl_attrs);
+ }
- validated = 1;
+ /* Don't apply the attribute to both the decl and the type. */
+ return 1;
+ }
}
-#endif
-#ifdef VALID_MACHINE_TYPE_ATTRIBUTE
- if (validated)
- /* 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))
+ type_attrs = TYPE_ATTRIBUTES (type);
+ if ((*target.valid_type_attribute) (type, type_attrs, attr_name,
+ attr_args))
{
tree attr = lookup_attribute (IDENTIFIER_POINTER (attr_name),
- type_attr_list);
+ type_attrs);
if (attr != NULL_TREE)
{
- /* Override existing arguments.
- ??? This currently works since attribute arguments are not
- included in `attribute_hash_list'. Something more complicated
+ /* Override existing arguments. ??? This currently
+ works since attribute arguments are not included in
+ `attribute_hash_list'. Something more complicated
may be needed in the future. */
TREE_VALUE (attr) = 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);
+ type_attrs = tree_cons (attr_name, attr_args, type_attrs);
if (decl != 0)
- type = build_type_attribute_variant (type, type_attr_list);
+ type = build_type_attribute_variant (type, type_attrs);
else
- TYPE_ATTRIBUTES (type) = type_attr_list;
+ TYPE_ATTRIBUTES (type) = type_attrs;
}
- if (decl != 0)
+
+ if (decl)
TREE_TYPE (decl) = type;
- validated = 1;
- }
- /* Handle putting a type attribute on pointer-to-function-type by putting
- the attribute on the function type. */
+ return 1;
+ }
+ /* Handle putting a type attribute on pointer-to-function-type
+ by putting the attribute on the function type. */
else if (POINTER_TYPE_P (type)
&& TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE
- && VALID_MACHINE_TYPE_ATTRIBUTE (TREE_TYPE (type), type_attr_list,
- attr_name, attr_args))
+ && (*target.valid_type_attribute) (TREE_TYPE (type), type_attrs,
+ attr_name, attr_args))
{
tree inner_type = TREE_TYPE (type);
- tree inner_attr_list = TYPE_ATTRIBUTES (inner_type);
+ tree inner_attrs = TYPE_ATTRIBUTES (inner_type);
tree attr = lookup_attribute (IDENTIFIER_POINTER (attr_name),
- type_attr_list);
+ type_attrs);
if (attr != NULL_TREE)
TREE_VALUE (attr) = attr_args;
else
{
- inner_attr_list = tree_cons (attr_name, attr_args, inner_attr_list);
+ inner_attrs = tree_cons (attr_name, attr_args, inner_attrs);
inner_type = build_type_attribute_variant (inner_type,
- inner_attr_list);
+ inner_attrs);
}
- if (decl != 0)
+ if (decl)
TREE_TYPE (decl) = build_pointer_type (inner_type);
else
{
TREE_TYPE (type) = inner_type;
}
- validated = 1;
+ return 1;
}
-#endif
- return validated;
+ return 0;
}
/* Return non-zero if IDENT is a valid name for attribute ATTR,
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;
}
/* Given types T1 and T2, merge their attributes and return
- the result. */
+ the result. */
tree
-merge_machine_type_attributes (t1, t2)
+merge_type_attributes (t1, t2)
tree t1, t2;
{
-#ifdef MERGE_MACHINE_TYPE_ATTRIBUTES
- return MERGE_MACHINE_TYPE_ATTRIBUTES (t1, t2);
-#else
return merge_attributes (TYPE_ATTRIBUTES (t1),
TYPE_ATTRIBUTES (t2));
-#endif
}
/* Given decls OLDDECL and NEWDECL, merge their attributes and return
the result. */
tree
-merge_machine_decl_attributes (olddecl, newdecl)
+merge_decl_attributes (olddecl, newdecl)
tree olddecl, newdecl;
{
-#ifdef MERGE_MACHINE_DECL_ATTRIBUTES
- return MERGE_MACHINE_DECL_ATTRIBUTES (olddecl, newdecl);
-#else
return merge_attributes (DECL_MACHINE_ATTRIBUTES (olddecl),
DECL_MACHINE_ATTRIBUTES (newdecl));
-#endif
}
+
+#ifdef TARGET_DLLIMPORT_DECL_ATTRIBUTES
+
+/* Specialization of merge_decl_attributes for various Windows targets.
+
+ This handles the following situation:
+
+ __declspec (dllimport) int foo;
+ int foo;
+
+ The second instance of `foo' nullifies the dllimport. */
+
+tree
+merge_dllimport_decl_attributes (old, new)
+ tree old;
+ tree new;
+{
+ tree a;
+ int delete_dllimport_p;
+
+ old = DECL_MACHINE_ATTRIBUTES (old);
+ new = DECL_MACHINE_ATTRIBUTES (new);
+
+ /* What we need to do here is remove from `old' dllimport if it doesn't
+ appear in `new'. dllimport behaves like extern: if a declaration is
+ marked dllimport and a definition appears later, then the object
+ is not dllimport'd. */
+ if (lookup_attribute ("dllimport", old) != NULL_TREE
+ && lookup_attribute ("dllimport", new) == NULL_TREE)
+ delete_dllimport_p = 1;
+ else
+ delete_dllimport_p = 0;
+
+ a = merge_attributes (old, new);
+
+ if (delete_dllimport_p)
+ {
+ tree prev,t;
+
+ /* Scan the list for dllimport and delete it. */
+ for (prev = NULL_TREE, t = a; t; prev = t, t = TREE_CHAIN (t))
+ {
+ if (is_attribute_p ("dllimport", TREE_PURPOSE (t)))
+ {
+ if (prev == NULL_TREE)
+ a = TREE_CHAIN (a);
+ else
+ TREE_CHAIN (prev) = TREE_CHAIN (t);
+ break;
+ }
+ }
+ }
+
+ return a;
+}
+
+#endif /* TARGET_DLLIMPORT_DECL_ATTRIBUTES */
\f
/* Set the type qualifiers for TYPE to TYPE_QUALS, which is a bitmask
of the various TYPE_QUAL values. */
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;
TYPE_RESTRICT (type) = (type_quals & TYPE_QUAL_RESTRICT) != 0;
}
-/* Given a type node TYPE and a TYPE_QUALIFIER_SET, return a type for
- the same kind of data as TYPE describes. Variants point to the
- "main variant" (which has no qualifiers set) via TYPE_MAIN_VARIANT,
- and it points to a chain of other variants so that duplicate
- variants are never made. Only main variants should ever appear as
- types of expressions. */
+/* Return a version of the TYPE, qualified as indicated by the
+ TYPE_QUALS, if one exists. If no qualified version exists yet,
+ return NULL_TREE. */
tree
-build_qualified_type (type, type_quals)
+get_qualified_type (type, type_quals)
tree type;
int type_quals;
{
- register tree t;
-
+ 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. */
-
for (t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t))
if (TYPE_QUALS (t) == type_quals && TYPE_NAME (t) == TYPE_NAME (type))
return t;
- /* We need a new one. */
- t = build_type_copy (type);
- set_type_quals (t, type_quals);
+ return NULL_TREE;
+}
+
+/* Like get_qualified_type, but creates the type if it does not
+ exist. This function never returns NULL_TREE. */
+
+tree
+build_qualified_type (type, type_quals)
+ tree type;
+ int type_quals;
+{
+ tree t;
+
+ /* See if we already have the appropriate qualified variant. */
+ t = get_qualified_type (type, type_quals);
+
+ /* If not, build it. */
+ if (!t)
+ {
+ t = build_type_copy (type);
+ set_type_quals (t, type_quals);
+ }
+
return t;
}
tree type;
{
register tree t, m = TYPE_MAIN_VARIANT (type);
- register struct obstack *ambient_obstack = current_obstack;
- current_obstack = TYPE_OBSTACK (type);
t = copy_node (type);
- current_obstack = ambient_obstack;
TYPE_POINTER_TO (t) = 0;
TYPE_REFERENCE_TO (t) = 0;
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;
+ 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. */
+ must call that routine before comparing TYPE_ALIGNs. */
layout_type (type);
- 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_ALIGN (h->type) == TYPE_ALIGN (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;
+ 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)
{
- 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 (ggc_p || TREE_PERMANENT (type))
- type_hash_add (hashcode, 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);
- return type;
+ /* Continue scan. */
+ return 1;
}
-/* Mark ARG (which is really a struct type_hash **) for GC. */
+/* Mark ARG (which is really a htab_t *) for GC. */
static void
mark_type_hash (arg)
void *arg;
{
- struct type_hash *t = *(struct type_hash **) arg;
+ htab_t t = *(htab_t *) arg;
- while (t)
- {
- ggc_mark_tree (t->type);
- t = t->next;
- }
+ htab_traverse (t, mark_hash_entry, 0);
+}
+
+/* Mark the hashtable slot pointed to by ENTRY (which is really a
+ `tree**') for GC. */
+
+static int
+mark_tree_hashtable_entry (entry, data)
+ void **entry;
+ void *data ATTRIBUTE_UNUSED;
+{
+ ggc_mark_tree ((tree) *entry);
+ return 1;
+}
+
+/* Mark ARG (which is really a htab_t whose slots are trees) for
+ GC. */
+
+void
+mark_tree_hashtable (arg)
+ void *arg;
+{
+ htab_t t = *(htab_t *) arg;
+ htab_traverse (t, mark_tree_hashtable_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;
}
return t1 == t2;
}
+/* Returns the number of arguments to the FUNCTION_TYPE or METHOD_TYPE
+ given by TYPE. If the argument list accepts variable arguments,
+ then this function counts only the ordinary arguments. */
+
+int
+type_num_arguments (type)
+ tree type;
+{
+ int i = 0;
+ tree t;
+
+ for (t = TYPE_ARG_TYPES (type); t; t = TREE_CHAIN (t))
+ /* If the function does not take a variable number of arguments,
+ the last element in the list will have type `void'. */
+ if (VOID_TYPE_P (TREE_VALUE (t)))
+ break;
+ else
+ ++i;
+
+ return i;
+}
+
/* Nonzero if integer constants T1 and T2
represent the same constant value. */
{
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);
}
+/* Returns -1 if T1 < T2, 0 if T1 == T2, and 1 if T1 > T2. */
+
+int
+tree_int_cst_compare (t1, t2)
+ tree t1;
+ tree t2;
+{
+ if (tree_int_cst_lt (t1, t2))
+ return -1;
+ else if (tree_int_cst_lt (t2, t1))
+ return 1;
+ else
+ return 0;
+}
+
+/* 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)
+ && ! memcmp (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,
as being equivalent to anything. */
if ((TREE_CODE (TREE_OPERAND (t1, 0)) == VAR_DECL
&& DECL_NAME (TREE_OPERAND (t1, 0)) == NULL_TREE
- && DECL_RTL (TREE_OPERAND (t1, 0)) == 0)
+ && !DECL_RTL_SET_P (TREE_OPERAND (t1, 0)))
|| (TREE_CODE (TREE_OPERAND (t2, 0)) == VAR_DECL
&& DECL_NAME (TREE_OPERAND (t2, 0)) == NULL_TREE
- && DECL_RTL (TREE_OPERAND (t2, 0)) == 0))
+ && !DECL_RTL_SET_P (TREE_OPERAND (t2, 0))))
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. */
- push_obstacks (TYPE_OBSTACK (to_type), TYPE_OBSTACK (to_type));
+ /* We need a new one. */
t = make_node (POINTER_TYPE);
- pop_obstacks ();
TREE_TYPE (t) = 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. */
+ t = make_node (REFERENCE_TYPE);
+
+ 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;
+}
+
+/* Build a type that is compatible with t but has no cv quals anywhere
+ in its type, thus
+
+ const char *const *const * -> char ***. */
+
+tree
+build_type_no_quals (t)
+ tree t;
+{
+ switch (TREE_CODE (t))
+ {
+ case POINTER_TYPE:
+ return build_pointer_type (build_type_no_quals (TREE_TYPE (t)));
+ case REFERENCE_TYPE:
+ return build_reference_type (build_type_no_quals (TREE_TYPE (t)));
+ default:
+ return TYPE_MAIN_VARIANT (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;
-
- push_obstacks (TYPE_OBSTACK (itype), TYPE_OBSTACK (itype));
TYPE_MAX_VALUE (itype) = convert (sizetype, maxval);
- pop_obstacks ();
-
TYPE_MODE (itype) = TYPE_MODE (sizetype);
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;
}
if (type == NULL_TREE)
type = sizetype;
- push_obstacks (TYPE_OBSTACK (itype), TYPE_OBSTACK (itype));
TYPE_MIN_VALUE (itype) = convert (type, lowval);
TYPE_MAX_VALUE (itype) = highval ? convert (type, highval) : NULL;
- pop_obstacks ();
TYPE_PRECISION (itype) = TYPE_PRECISION (type);
TYPE_MODE (itype) = TYPE_MODE (type);
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,
else if (component_type == long_long_unsigned_type_node)
name = "complex long long unsigned int";
else
- name = (char *)0;
+ name = 0;
- if (name)
+ if (name != 0)
TYPE_NAME (t) = get_identifier (name);
}
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,
/* Since type_for_size always gives an integer type. */
&& TREE_CODE (type) != REAL_TYPE
/* Don't crash if field not laid out yet. */
- && DECL_SIZE (TREE_OPERAND (op, 1)) != 0)
+ && DECL_SIZE (TREE_OPERAND (op, 1)) != 0
+ && host_integerp (DECL_SIZE (TREE_OPERAND (op, 1)), 1))
{
- unsigned innerprec = TREE_INT_CST_LOW (DECL_SIZE (TREE_OPERAND (op, 1)));
+ unsigned int innerprec
+ = tree_low_cst (DECL_SIZE (TREE_OPERAND (op, 1)), 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;
}
\f
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)
if (TREE_CODE (op) == COMPONENT_REF
/* Since type_for_size always gives an integer type. */
- && TREE_CODE (TREE_TYPE (op)) != REAL_TYPE)
+ && TREE_CODE (TREE_TYPE (op)) != REAL_TYPE
+ /* Ensure field is laid out already. */
+ && DECL_SIZE (TREE_OPERAND (op, 1)) != 0)
{
- unsigned innerprec = TREE_INT_CST_LOW (DECL_SIZE (TREE_OPERAND (op, 1)));
+ unsigned HOST_WIDE_INT innerprec
+ = tree_low_cst (DECL_SIZE (TREE_OPERAND (op, 1)), 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;
int_fits_type_p (c, type)
tree c, type;
{
- if (TREE_UNSIGNED (type))
- return (! (TREE_CODE (TYPE_MAX_VALUE (type)) == INTEGER_CST
- && INT_CST_LT_UNSIGNED (TYPE_MAX_VALUE (type), c))
- && ! (TREE_CODE (TYPE_MIN_VALUE (type)) == INTEGER_CST
- && INT_CST_LT_UNSIGNED (c, TYPE_MIN_VALUE (type)))
- /* Negative ints never fit unsigned types. */
- && ! (TREE_INT_CST_HIGH (c) < 0
- && ! TREE_UNSIGNED (TREE_TYPE (c))));
+ /* If the bounds of the type are integers, we can check ourselves.
+ Otherwise,. use force_fit_type, which checks against the precision. */
+ if (TYPE_MAX_VALUE (type) != NULL_TREE
+ && TYPE_MIN_VALUE (type) != NULL_TREE
+ && TREE_CODE (TYPE_MAX_VALUE (type)) == INTEGER_CST
+ && TREE_CODE (TYPE_MIN_VALUE (type)) == INTEGER_CST)
+ {
+ if (TREE_UNSIGNED (type))
+ return (! INT_CST_LT_UNSIGNED (TYPE_MAX_VALUE (type), c)
+ && ! INT_CST_LT_UNSIGNED (c, TYPE_MIN_VALUE (type))
+ /* Negative ints never fit unsigned types. */
+ && ! (TREE_INT_CST_HIGH (c) < 0
+ && ! TREE_UNSIGNED (TREE_TYPE (c))));
+ else
+ return (! INT_CST_LT (TYPE_MAX_VALUE (type), c)
+ && ! INT_CST_LT (c, TYPE_MIN_VALUE (type))
+ /* Unsigned ints with top bit set never fit signed types. */
+ && ! (TREE_INT_CST_HIGH (c) < 0
+ && TREE_UNSIGNED (TREE_TYPE (c))));
+ }
else
- return (! (TREE_CODE (TYPE_MAX_VALUE (type)) == INTEGER_CST
- && INT_CST_LT (TYPE_MAX_VALUE (type), c))
- && ! (TREE_CODE (TYPE_MIN_VALUE (type)) == INTEGER_CST
- && INT_CST_LT (c, TYPE_MIN_VALUE (type)))
- /* Unsigned ints with top bit set never fit signed types. */
- && ! (TREE_INT_CST_HIGH (c) < 0
- && TREE_UNSIGNED (TREE_TYPE (c))));
+ {
+ c = copy_node (c);
+ TREE_TYPE (c) = type;
+ return !force_fit_type (c, 0);
+ }
}
/* Given a DECL or TYPE, return the scope in which it was declared, or
- NUL_TREE if there is no containing scope. */
+ NULL_TREE if there is no containing scope. */
tree
get_containing_scope (t)
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)))));
+ context
+ = TYPE_MAIN_VARIANT
+ (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl)))));
else
context = DECL_CONTEXT (decl);
{
if (TREE_CODE (context) == BLOCK)
context = BLOCK_SUPERCONTEXT (context);
- else
+ else
context = get_containing_scope (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 ();
}
/* CALL is a CALL_EXPR. Return the declaration for the function
- called, or NULL_TREE if the called function cannot be
+ called, or NULL_TREE if the called function cannot be
determined. */
tree
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
fprintf (stderr, "(No per-node statistics)\n");
#endif
print_obstack_statistics ("permanent_obstack", &permanent_obstack);
- print_obstack_statistics ("maybepermanent_obstack", &maybepermanent_obstack);
- print_obstack_statistics ("temporary_obstack", &temporary_obstack);
- print_obstack_statistics ("momentary_obstack", &momentary_obstack);
- print_obstack_statistics ("temp_decl_obstack", &temp_decl_obstack);
+ print_type_hash_statistics ();
print_lang_statistics ();
}
\f
#define FILE_FUNCTION_PREFIX_LEN 9
-#ifndef NO_DOLLAR_IN_LABEL
-#define FILE_FUNCTION_FORMAT "_GLOBAL_$%s$%s"
-#else /* NO_DOLLAR_IN_LABEL */
-#ifndef NO_DOT_IN_LABEL
-#define FILE_FUNCTION_FORMAT "_GLOBAL_.%s.%s"
-#else /* NO_DOT_IN_LABEL */
#define FILE_FUNCTION_FORMAT "_GLOBAL__%s_%s"
-#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 (! ( ISDIGIT(*p)
-#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
- || ISUPPER(*p)
- || ISLOWER(*p)))
- *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),
int i;
tree vals;
HOST_WIDE_INT domain_min
- = TREE_INT_CST_LOW (TYPE_MIN_VALUE (TYPE_DOMAIN (TREE_TYPE (init))));
+ = tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (TREE_TYPE (init))), 0);
tree non_const_bits = NULL_TREE;
+
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
+ if (!host_integerp (TREE_VALUE (vals), 0)
|| (TREE_PURPOSE (vals) != NULL_TREE
- && TREE_CODE (TREE_PURPOSE (vals)) != INTEGER_CST))
+ && !host_integerp (TREE_PURPOSE (vals), 0)))
non_const_bits
= tree_cons (TREE_PURPOSE (vals), TREE_VALUE (vals), non_const_bits);
else if (TREE_PURPOSE (vals) != NULL_TREE)
{
/* Set a range of bits to ones. */
HOST_WIDE_INT lo_index
- = TREE_INT_CST_LOW (TREE_PURPOSE (vals)) - domain_min;
+ = tree_low_cst (TREE_PURPOSE (vals), 0) - domain_min;
HOST_WIDE_INT hi_index
- = TREE_INT_CST_LOW (TREE_VALUE (vals)) - domain_min;
+ = tree_low_cst (TREE_VALUE (vals), 0) - 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
{
/* Set a single bit to one. */
HOST_WIDE_INT index
- = TREE_INT_CST_LOW (TREE_VALUE (vals)) - domain_min;
+ = tree_low_cst (TREE_VALUE (vals), 0) - domain_min;
if (index < 0 || index >= bit_size)
{
error ("invalid initializer for bit string");
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
-#if defined ENABLE_CHECKING && (GCC_VERSION >= 2007)
+#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. */
+
void
tree_check_failed (node, code, file, line, function)
const tree node;
int line;
const char *function;
{
- error ("Tree check: expected %s, have %s",
- tree_code_name[code], tree_code_name[TREE_CODE (node)]);
- fancy_abort (file, line, function);
+ internal_error ("Tree check: expected %s, have %s in %s, at %s:%d",
+ tree_code_name[code], tree_code_name[TREE_CODE (node)],
+ function, trim_filename (file), line);
}
/* 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;
{
- 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);
+ internal_error
+ ("Tree check: expected class '%c', have '%c' (%s) in %s, at %s:%d",
+ cl, TREE_CODE_CLASS (TREE_CODE (node)),
+ tree_code_name[TREE_CODE (node)], function, trim_filename (file), line);
}
-#endif /* ENABLE_CHECKING */
-
-/* Return the alias set for T, which may be either a type or an
- expression. */
+#endif /* ENABLE_TREE_CHECKING */
+\f
+/* For a new vector type node T, build the information necessary for
+ debuggint output. */
-int
-get_alias_set (t)
+static void
+finish_vector_type (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);
-}
-
-/* Return a brand-new alias set. */
+ layout_type (t);
-int
-new_alias_set ()
-{
- static int last_alias_set;
- if (flag_strict_aliasing)
- return ++last_alias_set;
- else
- return 0;
+ {
+ 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);
+ }
}
-\f
-#ifndef CHAR_TYPE_SIZE
-#define CHAR_TYPE_SIZE BITS_PER_UNIT
-#endif
-
-#ifndef SHORT_TYPE_SIZE
-#define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
-#endif
-
-#ifndef INT_TYPE_SIZE
-#define INT_TYPE_SIZE BITS_PER_WORD
-#endif
-
-#ifndef LONG_TYPE_SIZE
-#define LONG_TYPE_SIZE BITS_PER_WORD
-#endif
-
-#ifndef LONG_LONG_TYPE_SIZE
-#define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
-#endif
-
-#ifndef FLOAT_TYPE_SIZE
-#define FLOAT_TYPE_SIZE BITS_PER_WORD
-#endif
-
-#ifndef DOUBLE_TYPE_SIZE
-#define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
-#endif
-
-#ifndef LONG_DOUBLE_TYPE_SIZE
-#define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
-#endif
/* 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. */
-
+
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);
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);
- /* Define an unsigned integer first. make_unsigned_type and make_signed_type
- both call set_sizetype for the first type that we create, and we want this
- to be large enough to hold the sizes of various types until we switch to
- the real sizetype. */
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);
unsigned_intTI_type_node = make_unsigned_type (GET_MODE_BITSIZE (TImode));
}
-/* For type TYPE, fill in the proper type for TYPE_SIZE and
- TYPE_SIZE_UNIT. */
-static void
-fix_sizetype (type)
- tree type;
-{
- TREE_TYPE (TYPE_SIZE (type)) = bitsizetype;
- TREE_TYPE (TYPE_SIZE_UNIT (type)) = sizetype;
-}
-
/* Call this function after calling build_common_tree_nodes and set_sizetype.
- It will fix the previously made nodes to have proper references to
- sizetype, and it will create several other common tree nodes. */
+ It will create several other common tree nodes. */
+
void
build_common_tree_nodes_2 (short_double)
int short_double;
{
- fix_sizetype (signed_char_type_node);
- fix_sizetype (unsigned_char_type_node);
- fix_sizetype (char_type_node);
- fix_sizetype (short_integer_type_node);
- fix_sizetype (short_unsigned_type_node);
- fix_sizetype (integer_type_node);
- fix_sizetype (unsigned_type_node);
- fix_sizetype (long_unsigned_type_node);
- fix_sizetype (long_integer_type_node);
- fix_sizetype (long_long_integer_type_node);
- fix_sizetype (long_long_unsigned_type_node);
-
- fix_sizetype (intQI_type_node);
- fix_sizetype (intHI_type_node);
- fix_sizetype (intSI_type_node);
- fix_sizetype (intDI_type_node);
- fix_sizetype (intTI_type_node);
- fix_sizetype (unsigned_intQI_type_node);
- fix_sizetype (unsigned_intHI_type_node);
- fix_sizetype (unsigned_intSI_type_node);
- fix_sizetype (unsigned_intDI_type_node);
- fix_sizetype (unsigned_intTI_type_node);
-
+ /* Define these next since types below may used them. */
integer_zero_node = build_int_2 (0, 0);
- TREE_TYPE (integer_zero_node) = integer_type_node;
integer_one_node = build_int_2 (1, 0);
- TREE_TYPE (integer_one_node) = integer_type_node;
+ integer_minus_one_node = build_int_2 (-1, -1);
- size_zero_node = build_int_2 (0, 0);
- TREE_TYPE (size_zero_node) = sizetype;
- size_one_node = build_int_2 (1, 0);
- TREE_TYPE (size_one_node) = sizetype;
+ 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); /* Uses size_zero_node */
+ 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);
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
+ {
+ tree t;
+ BUILD_VA_LIST_TYPE (t);
+
+ /* Many back-ends define record types without seting TYPE_NAME.
+ If we copied the record type here, we'd keep the original
+ record type without a name. This breaks name mangling. So,
+ don't copy record types and let c_common_nodes_and_builtins()
+ declare the type to be __builtin_va_list. */
+ if (TREE_CODE (t) != RECORD_TYPE)
+ t = build_type_copy (t);
+
+ va_list_type_node = t;
+ }
+
+ 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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