Constify member function parameters that can be const.
Correct a couple of expressions in formerly uninstantiated templates.

The new code is 0.362% faster in bootstrap, with a 99.5% confidence of
being faster.

Tested on x86-64.


Index: gcc/java/ChangeLog

2012-10-01  Lawrence Crowl  <crowl@google.com>

	* Make-lang.in (JAVA_OBJS): Add dependence on hash-table.o.
	(JCFDUMP_OBJS): Add dependence on hash-table.o.
	(jcf-io.o): Add dependence on hash-table.h.
	* jcf-io.c (memoized_class_lookups): Change to use type-safe hash table.

Index: gcc/c/ChangeLog

2012-10-09  Lawrence Crowl  <crowl@google.com>

	* Make-lang.in (c-decl.o): Add dependence on hash-table.h.
	* c-decl.c (detect_field_duplicates_hash): Change to new type-safe
	hash table.

Index: gcc/objc/ChangeLog

2012-10-01  Lawrence Crowl  <crowl@google.com>

	* Make-lang.in (OBJC_OBJS): Add dependence on hash-table.o.
	(objc-act.o): Add dependence on hash-table.h.
	* objc-act.c (objc_detect_field_duplicates): Change to new type-safe
	hash table.

Index: gcc/ChangeLog

2012-10-09  Lawrence Crowl  <crowl@google.com>

	* Makefile.in (fold-const.o): Add depencence on hash-table.h.
	(dse.o): Likewise.
	(cfg.o): Likewise.
	* fold-const.c (fold_checksum_tree): Change to new type-safe hash table.
	* (print_fold_checksum): Likewise.
	* cfg.c (var bb_original): Likewise.
	* (var bb_copy): Likewise.
	* (var loop_copy): Likewise.
	* hash-table.h (template hash_table): Constify parameters for find...
	and remove_elt... member functions.
        (hash_table::empty) Correct size expression.
        (hash_table::clear_slot) Correct deleted entry assignment.
	* dse.c (var rtx_group_table): Change to new type-safe hash table.

Index: gcc/cp/ChangeLog

2012-10-09  Lawrence Crowl  <crowl@google.com>

	* Make-lang.in (class.o): Add dependence on hash-table.h.
	(tree.o): Likewise.
	(semantics.o): Likewise.
	* class.c (fixed_type_or_null): Change to new type-safe hash table.
	* tree.c (verify_stmt_tree): Likewise.
	(verify_stmt_tree_r): Likewise.
	* semantics.c (struct nrv_data): Likewise.

From-SVN: r192273