* basic-block.h (ALLOCA_REG_SET): Remove.
	(INITIALIZE_REG_SET): New macro.
	* flow.c (update_life_info): Use it.
	(calculate_global_regs_live): Likewise.
	(propagate_block): Likewise.
	* global.c (build_insn_chain): Likewise.
	* haifa-sched.c (schedule_region): Likewise.

From-SVN: r32350