libcpp

	* include/symtab.h (HT_ALLOCED): Remove.
	(ht_purge): Declare.
	* symtab.c (DELETED): New define.
	(ht_lookup): Update comment.
	(ht_lookup_with_hash): Handle deleted entries.  Remove HT_ALLOCED
	code.  Use subobject allocator for strings, if it exists.
	(ht_expand): Handle deleted entries.
	(ht_forall): Likewise.
	(ht_purge): New function.
	(ht_dump_statistics): Print deletion statistics.
gcc
	* ggc-zone.c (lookup_page_table_if_allocated): New function.
	(zone_find_object_offset): Likewise.
	(gt_ggc_m_S): Likewise.
	(highest_bit): Likewise.
	* ggc-page.c (gt_ggc_m_S): New function.
	* stringpool.c (string_stack): Remove.
	(init_stringpool): Update.
	(ggc_alloc_string): Use ggc_alloc.
	(maybe_delete_ident): New function.
	(ggc_purge_stringpool): Likewise.
	(gt_ggc_m_S): Remove.
	* ggc-common.c (ggc_protect_identifiers): New global.
	(ggc_mark_roots): Call ggc_purge_stringpool.  Use
	ggc_protect_identifiers.
	* ggc.h (ggc_protect_identifiers): Declare.
	(gt_ggc_m_S): Update.
	(ggc_purge_stringpool): Declare.
	* toplev.c (compile_file): Set and reset ggc_protect_identifiers.
	* gengtype.c (write_types_process_field) <TYPE_STRING>: Remove
	special case.
	(write_root): Cast gt_ggc_m_S to gt_pointer_walker.
gcc/cp
	* mangle.c (save_partially_mangled_name): Remove.
	(restore_partially_mangled_name): Likewise.
	(write_encoding): Update.
	(write_unqualified_name): Likewise.
	(start_mangling): Always use name_obstack.  Remove 'ident_p'
	argument.
	(get_identifier_nocopy): Remove.
	(finish_mangling_internal): Rename from finish_mangling.
	(finish_mangling): New function.
	(finish_mangling_get_identifier): Likewise.
	(partially_mangled_name, partially_mangled_name_len): Remove.
	(mangle_decl_string): Change return type.  Update.
	(mangle_decl, mangle_type_string, mangle_special_for_type,
	mangle_ctor_vtbl_for_type, mangle_thunk, mangle_guard_variable,
	mangle_ref_init_variable): Update.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@135720 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 11 insertions, 2 deletions

diff --git a/gcc/ggc.h b/gcc/ggc.h
index e70afcf1dd9..03f534faaa5 100644
--- a/gcc/ggc.h
+++ b/gcc/ggc.h
@@ -1,5 +1,5 @@
 /* Garbage collection for the GNU compiler.
-   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -120,6 +120,9 @@ extern int ggc_marked_p	(const void *);
 /* Mark the entries in the string pool.  */
 extern void ggc_mark_stringpool	(void);
 
+/* Purge the entries in the string pool.  */
+extern void ggc_purge_stringpool (void);
+
 /* Call ggc_set_mark on all the roots.  */
 
 extern void ggc_mark_roots (void);
@@ -134,7 +137,7 @@ extern void gt_pch_restore_stringpool (void);
 
 extern void gt_pch_p_S (void *, void *, gt_pointer_operator, void *);
 extern void gt_pch_n_S (const void *);
-extern void gt_ggc_m_S (void *);
+extern void gt_ggc_m_S (const void *);
 
 /* Initialize the string pool.  */
 extern void init_stringpool (void);
@@ -200,6 +203,12 @@ extern void ggc_pch_read (FILE *, void *);
 /* When set, ggc_collect will do collection.  */
 extern bool ggc_force_collect;
 
+/* When true, identifier nodes are considered as GC roots.  When
+   false, identifier nodes are treated like any other GC-allocated
+   object, and the identifier hash table is treated as a weak
+   hash.  */
+extern bool ggc_protect_identifiers;
+
 /* The internal primitive.  */
 extern void *ggc_alloc_stat (size_t MEM_STAT_DECL);
 #define ggc_alloc(s) ggc_alloc_stat (s MEM_STAT_INFO)