* config/alpha/alpha.c (alpha_adjust_cost): Remove everything but
memory latency adjustments.
(alpha_variable_issue): Remove.
(alpha_use_dfa_pipeline_interface): New.
(alpha_multipass_dfa_lookahead): New.
* config/alpha/alpha.md: Remove define_function_unit scheduling;
include new dfa scheduling.
(attr type): Add none.
(blockage): Use it.
* config/alpha/ev4.md: New.
* config/alpha/ev5.md: New.
* config/alpha/ev6.md: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@53196 138bc75d-0d04-0410-961f-82ee72b054a4