* cp/optimize.c: Include hashtab.h.
	(struct inline_data): Add tree_pruner.
	(expand_call_inline, expand_calls_inline): Use it when calling
	walk_tree.
	(optimize_function): Initialize and free tree_pruner.

	* g++.old-deja/g++.other/perf1.C: New test.

From-SVN: r41525