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Index: libcpp/ChangeLog

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2004-05-29  Geoffrey Keating  <geoffk@apple.com>

	* symtab.c (ht_create): Set entries_owned.
	(ht_destroy): Honour entries_owned.
	(ht_expand): Likewise.
	(ht_load): New.

Index: libcpp/include/ChangeLog
2004-05-29  Geoffrey Keating  <geoffk@apple.com>

	* symtab.h (struct ht): New field 'entries_owned'
	(ht_load): New prototype.

Index: gcc/ChangeLog
2004-05-29  Geoffrey Keating  <geoffk@apple.com>

	* gengtype-yacc.y: Add NESTED_PTR token.
	(option): Record `nested_ptr' option.
	* gengtype-lex.l: Handle `nested_ptr' keyword.
	* gengtype.c (walk_type): Process `nested_ptr' option.
	* gengtype.h (struct nested_ptr_data): New.
	* doc/gty.texi (GTY Options): Document `nested_ptr' option.
	* stringpool.c (struct string_pool_data): Make 'entries' point to
	ht_identifier instead of tree.
	(gt_pch_save_stringpool): Don't adjust pointers.
	(gt_pch_restore_stringpool): Call ht_load.

From-SVN: r82438
This commit is contained in:
Geoffrey Keating 2004-05-30 00:49:06 +00:00 committed by Geoffrey Keating
parent 666e5d7b94
commit b453c95fd3
11 changed files with 149 additions and 38 deletions
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13
gcc/ChangeLog
View File

@ -1,3 +1,16 @@
2004-05-29 Geoffrey Keating <geoffk@apple.com>
* gengtype-yacc.y: Add NESTED_PTR token.
(option): Record `nested_ptr' option.
* gengtype-lex.l: Handle `nested_ptr' keyword.
* gengtype.c (walk_type): Process `nested_ptr' option.
* gengtype.h (struct nested_ptr_data): New.
* doc/gty.texi (GTY Options): Document `nested_ptr' option.
* stringpool.c (struct string_pool_data): Make 'entries' point to
ht_identifier instead of tree.
(gt_pch_save_stringpool): Don't adjust pointers.
(gt_pch_restore_stringpool): Call ht_load.
2004-05-29 Jason Merrill <jason@redhat.com>
* gimplify.c (gimplify_expr): Don't build a statement list

13
gcc/doc/gty.texi
View File

@ -291,6 +291,19 @@ this field is always @code{NULL}. This is used to avoid requiring
backends to define certain optional structures. It doesn't work with
language frontends.
@findex nested_ptr
@item nested_ptr (@var{type}, "@var{to expression}", "@var{from expression}")
The type machinery expects all pointers to point to the start of an
object. Sometimes for abstraction purposes it's convenient to have
a pointer which points inside an object. So long as it's possible to
convert the original object to and from the pointer, such pointers
can still be used. @var{type} is the type of the original object,
the @var{to expression} returns the pointer given the original object,
and the @var{from expression} returns the original object given
the pointer. The pointer will be available using the @code{%h}
escape.
@findex chain_next
@findex chain_prev
@item chain_next ("@var{expression}")

3
gcc/gengtype-lex.l
View File

@ -1,6 +1,6 @@
/* -*- indented-text -*- */
/* Process source files and output type information.
Copyright (C) 2002, 2003 Free Software Foundation, Inc.
Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
@ -235,6 +235,7 @@ ITYPE {IWORD}({WS}{IWORD})*
"struct"/[^[:alnum:]_] { return STRUCT; }
"enum"/[^[:alnum:]_] { return ENUM; }
"ptr_alias"/[^[:alnum:]_] { return ALIAS; }
"nested_ptr"/[^[:alnum:]_] { return NESTED_PTR; }
[0-9]+ { return NUM; }
"param"[0-9]*"_is"/[^[:alnum:]_] {
yylval.s = xmemdup (yytext, yyleng, yyleng+1);

10
gcc/gengtype-yacc.y
View File

@ -1,6 +1,6 @@
/* -*- indented-text -*- */
/* Process source files and output type information.
Copyright (C) 2002 Free Software Foundation, Inc.
Copyright (C) 2002, 2004 Free Software Foundation, Inc.
This file is part of GCC.
@ -44,6 +44,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
%token STRUCT
%token ENUM
%token ALIAS
%token NESTED_PTR
%token <s>PARAM_IS
%token NUM
%token PERCENTPERCENT "%%"
@ -279,6 +280,13 @@ option: ID
{ $$ = create_option ($1, (void *)$3); }
| type_option '(' type ')'
{ $$ = create_option ($1, adjust_field_type ($3, NULL)); }
| NESTED_PTR '(' type ',' stringseq ',' stringseq ')'
{
struct nested_ptr_data d =
{ adjust_field_type ($3, NULL), $5, $7 };
$$ = create_option ("nested_ptr",
xmemdup (&d, sizeof (d), sizeof (d)));
}
;
optionseq: option

44
gcc/gengtype.c
View File

@ -1509,6 +1509,7 @@ walk_type (type_p t, struct walk_type_data *d)
int use_param_num = -1;
int use_params_p = 0;
options_p oo;
const struct nested_ptr_data *nested_ptr_d = NULL;
d->needs_cast_p = 0;
for (oo = d->opt; oo; oo = oo->next)
@ -1523,6 +1524,8 @@ walk_type (type_p t, struct walk_type_data *d)
use_params_p = 1;
else if (strcmp (oo->name, "desc") == 0)
desc = (const char *)oo->info;
else if (strcmp (oo->name, "nested_ptr") == 0)
nested_ptr_d = (const struct nested_ptr_data *)oo->info ;
else if (strcmp (oo->name, "dot") == 0)
;
else if (strcmp (oo->name, "tag") == 0)
@ -1623,6 +1626,47 @@ walk_type (type_p t, struct walk_type_data *d)
break;
}
if (nested_ptr_d)
{
const char *oldprevval2 = d->prev_val[2];
if (! UNION_OR_STRUCT_P (nested_ptr_d->type))
{
error_at_line (d->line,
"field `%s' has invalid "
"option `nested_ptr'\n",
d->val);
return;
}
d->prev_val[2] = d->val;
oprintf (d->of, "%*s{\n", d->indent, "");
d->indent += 2;
d->val = xasprintf ("x%d", d->counter++);
oprintf (d->of, "%*s%s %s * %s =\n", d->indent, "",
(nested_ptr_d->type->kind == TYPE_UNION
? "union" : "struct"),
nested_ptr_d->type->u.s.tag, d->val);
oprintf (d->of, "%*s", d->indent + 2, "");
output_escaped_param (d, nested_ptr_d->convert_from,
"nested_ptr");
oprintf (d->of, ";\n");
d->process_field (nested_ptr_d->type, d);
oprintf (d->of, "%*s%s = ", d->indent, "",
d->prev_val[2]);
d->prev_val[2] = d->val;
output_escaped_param (d, nested_ptr_d->convert_to,
"nested_ptr");
oprintf (d->of, ";\n");
d->indent -= 2;
oprintf (d->of, "%*s}\n", d->indent, "");
d->val = d->prev_val[2];
d->prev_val[2] = oldprevval2;
}
else
d->process_field (t->u.p, d);
}
else

15
gcc/gengtype.h
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@ -37,6 +37,17 @@ enum typekind {
TYPE_PARAM_STRUCT
};
typedef struct pair *pair_p;
typedef struct type *type_p;
typedef unsigned lang_bitmap;
/* Option data for the 'nested_ptr' option. */
struct nested_ptr_data {
type_p type;
const char *convert_to;
const char *convert_from;
};
/* A way to pass data through to the output end. */
typedef struct options {
struct options *next;
@ -44,10 +55,6 @@ typedef struct options {
const void *info;
} *options_p;
typedef struct pair *pair_p;
typedef struct type *type_p;
typedef unsigned lang_bitmap;
/* A name and a type. */
struct pair {
pair_p next;

42
gcc/stringpool.c
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@ -1,5 +1,5 @@
/* String pool for GCC.
Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
@ -201,7 +201,11 @@ gt_pch_n_S (const void *x)
struct string_pool_data GTY(())
{
tree * GTY((length ("%h.nslots"))) entries;
struct ht_identifier * *
GTY((length ("%h.nslots"),
nested_ptr (union tree_node, "%h ? GCC_IDENT_TO_HT_IDENT (%h) : NULL",
"%h ? HT_IDENT_TO_GCC_IDENT (%h) : NULL")))
entries;
unsigned int nslots;
unsigned int nelements;
};
@ -237,25 +241,20 @@ ht_copy_and_clear (cpp_reader *r ATTRIBUTE_UNUSED, hashnode hp, const void *ht2_
static struct ht *saved_ident_hash;
/* The hash table contains pointers to the cpp_hashnode inside the
lang_identifier. The PCH machinery can't handle pointers that refer
to the inside of an object, so to save the hash table for PCH the
pointers are adjusted and stored in the variable SPD. */
/* Prepare the stringpool to be written (by clearing all the cpp parts
of each entry) and place the data to be saved in SPD. Save the
current state in SAVED_IDENT_HASH so that gt_pch_fixup_stringpool
can restore it. */
void
gt_pch_save_stringpool (void)
{
unsigned int i;
spd = ggc_alloc (sizeof (*spd));
spd->nslots = ident_hash->nslots;
spd->nelements = ident_hash->nelements;
spd->entries = ggc_alloc (sizeof (tree *) * spd->nslots);
for (i = 0; i < spd->nslots; i++)
if (ident_hash->entries[i] != NULL)
spd->entries[i] = HT_IDENT_TO_GCC_IDENT (ident_hash->entries[i]);
else
spd->entries[i] = NULL;
spd->entries = ggc_alloc (sizeof (spd->entries[0]) * spd->nslots);
memcpy (spd->entries, ident_hash->entries,
spd->nslots * sizeof (spd->entries[0]));
saved_ident_hash = ht_create (14);
saved_ident_hash->alloc_node = alloc_node;
@ -274,23 +273,12 @@ gt_pch_fixup_stringpool (void)
}
/* A PCH file has been restored, which loaded SPD; fill the real hash table
with adjusted pointers from SPD. */
from SPD. */
void
gt_pch_restore_stringpool (void)
{
unsigned int i;
ident_hash->nslots = spd->nslots;
ident_hash->nelements = spd->nelements;
ident_hash->entries = xrealloc (ident_hash->entries,
sizeof (hashnode) * spd->nslots);
for (i = 0; i < spd->nslots; i++)
if (spd->entries[i] != NULL)
ident_hash->entries[i] = GCC_IDENT_TO_HT_IDENT (spd->entries[i]);
else
ident_hash->entries[i] = NULL;
ht_load (ident_hash, spd->entries, spd->nslots, spd->nelements, false);
spd = NULL;
}

7
libcpp/ChangeLog
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@ -1,3 +1,10 @@
2004-05-29 Geoffrey Keating <geoffk@apple.com>
* symtab.c (ht_create): Set entries_owned.
(ht_destroy): Honour entries_owned.
(ht_expand): Likewise.
(ht_load): New.
2004-05-26 Paolo Bonzini <bonzini@gnu.org>
PR bootstrap/15651

5
libcpp/include/ChangeLog
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@ -1,3 +1,8 @@
2004-05-29 Geoffrey Keating <geoffk@apple.com>
* symtab.h (struct ht): New field 'entries_owned'
(ht_load): New prototype.
2004-05-23 Paolo Bonzini <bonzini@gnu.org>
* cpplib.h: Moved from gcc. Change header guard name.

9
libcpp/include/symtab.h
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@ -1,5 +1,5 @@
/* Hash tables.
Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
Copyright (C) 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
@ -58,6 +58,9 @@ struct ht
/* Table usage statistics. */
unsigned int searches;
unsigned int collisions;
/* Should 'entries' be freed when it is no longer needed? */
bool entries_owned;
};
/* Initialize the hashtable with 2 ^ order entries. */
@ -75,6 +78,10 @@ extern hashnode ht_lookup (hash_table *, const unsigned char *,
typedef int (*ht_cb) (struct cpp_reader *, hashnode, const void *);
extern void ht_forall (hash_table *, ht_cb, const void *);
/* Restore the hash table. */
extern void ht_load (hash_table *ht, hashnode *entries,
unsigned int nslots, unsigned int nelements, bool own);
/* Dump allocation statistics to stderr. */
extern void ht_dump_statistics (hash_table *);

20
libcpp/symtab.c
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@ -1,5 +1,5 @@
/* Hash tables.
Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
Copyright (C) 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
@ -68,6 +68,7 @@ ht_create (unsigned int order)
obstack_alignment_mask (&table->stack) = 0;
table->entries = xcalloc (nslots, sizeof (hashnode));
table->entries_owned = true;
table->nslots = nslots;
return table;
}
@ -78,6 +79,7 @@ void
ht_destroy (hash_table *table)
{
obstack_free (&table->stack, NULL);
if (table->entries_owned)
free (table->entries);
free (table);
}
@ -199,7 +201,9 @@ ht_expand (hash_table *table)
}
while (++p < limit);
if (table->entries_owned)
free (table->entries);
table->entries_owned = true;
table->entries = nentries;
table->nslots = size;
}
@ -222,6 +226,20 @@ ht_forall (hash_table *table, ht_cb cb, const void *v)
while (++p < limit);
}
/* Restore the hash table. */
void
ht_load (hash_table *ht, hashnode *entries,
unsigned int nslots, unsigned int nelements,
bool own)
{
if (ht->entries_owned)
free (ht->entries);
ht->entries = entries;
ht->nslots = nslots;
ht->nelements = nelements;
ht->entries_owned = own;
}
/* Dump allocation statistics to stderr. */
void