i386.c (ix86_builtin_vectorization_cost): Use existing rtx_cost latencies instead...

i386.c (ix86_builtin_vectorization_cost): Use existing rtx_cost latencies instead of having separate table...

	* i386.c (ix86_builtin_vectorization_cost): Use existing rtx_cost
	latencies instead of having separate table; make difference between
	integer and float costs.
	* i386.h (processor_costs): Remove scalar_stmt_cost,
	scalar_load_cost, scalar_store_cost, vec_stmt_cost, vec_to_scalar_cost,
	scalar_to_vec_cost, vec_align_load_cost, vec_unalign_load_cost,
	vec_store_cost.
	* x86-tune-costs.h: Remove entries which has been removed in
	procesor_costs from all tables; make cond_taken_branch_cost
	and cond_not_taken_branch_cost COST_N_INSNS based.

From-SVN: r253993