* bitmap.h (BITMAP_XMALLOC): New macro.
	* flow.c (CLEAN_ALLOCA): Remove.
	(delete_unreachable_blocks): Use xmalloc/xcalloc instead of alloca.
	(life_analysis): Likewise.
	(update_life_info): Don't use CLEAN_ALLOCA.
	(life_analysis_1): Use xmalloc/xcalloc instead of alloca.
	(calculate_global_regs_live): Likewise.
	(print_rtl_with_bb): Likewise.
	(verify_flow_info): Likewise.
	* global.c (global_alloc): Likewise.
	(global_conflicts): Likewise.
	* integrate.c (save_for_inline_nocopy): Likewise.
	(expand_inline_function): Likewise.
	* jump.c (jump_optimize_1): Likewise.
	(duplicate_loop_exit_test): Likewise.
	(thread_jumps): Likewise.
	* loop.c (loop_optimize): Likewise.
	(combine_givs): Likewise.
	(recombine_givs): Likewise.
	* reorg.c (dbr_schedule): Likewise.
	* unroll.c (unroll_loop): Likewise.

From-SVN: r30333