* config/i386/k6.md: Rewrite using the DFA model.
	* config/i386/i386.c (ix86_adjust_cost): Don't increase the
	cost of load-operation insns for the K6.
	(ia32_use_dfa_pipeline_interface): Add TARGET_K6.
	(ia32_multipass_dfa_lookahead): Likewise.

From-SVN: r82859