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+%% -*- erlang-indent-level: 2 -*-
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(hipe_ppc_specific).
+
+%% for hipe_coalescing_regalloc:
+-export([number_of_temporaries/1
+ ,analyze/1
+ ,labels/1
+ ,all_precoloured/0
+ ,bb/2
+ ,liveout/2
+ ,reg_nr/1
+ ,def_use/1
+ ,is_move/1
+ ,is_precoloured/1
+ ,var_range/1
+ ,allocatable/0
+ ,non_alloc/1
+ ,physical_name/1
+ ,reverse_postorder/1
+ ,livein/2
+ ,uses/1
+ ,defines/1
+ ]).
+
+%% for hipe_graph_coloring_regalloc:
+-export([is_fixed/1]).
+
+%% for hipe_ls_regalloc:
+-export([args/1, is_arg/1, is_global/1, new_spill_index/1]).
+-export([breadthorder/1, postorder/1]).
+
+%% callbacks for hipe_regalloc_loop
+-export([defun_to_cfg/1,
+ check_and_rewrite/2]).
+
+defun_to_cfg(Defun) ->
+ hipe_ppc_cfg:init(Defun).
+
+check_and_rewrite(Defun, Coloring) ->
+ hipe_ppc_ra_postconditions:check_and_rewrite(Defun, Coloring, 'normal').
+
+reverse_postorder(CFG) ->
+ hipe_ppc_cfg:reverse_postorder(CFG).
+
+non_alloc(CFG) ->
+ non_alloc(hipe_ppc_registers:nr_args(), hipe_ppc_cfg:params(CFG)).
+
+%% same as hipe_ppc_frame:fix_formals/2
+non_alloc(0, Rest) -> Rest;
+non_alloc(N, [_|Rest]) -> non_alloc(N-1, Rest);
+non_alloc(_, []) -> [].
+
+%% Liveness stuff
+
+analyze(CFG) ->
+ hipe_ppc_liveness_gpr:analyse(CFG).
+
+livein(Liveness,L) ->
+ [X || X <- hipe_ppc_liveness_gpr:livein(Liveness,L),
+ hipe_ppc:temp_is_allocatable(X)].
+
+liveout(BB_in_out_liveness,Label) ->
+ [X || X <- hipe_ppc_liveness_gpr:liveout(BB_in_out_liveness,Label),
+ hipe_ppc:temp_is_allocatable(X)].
+
+%% Registers stuff
+
+allocatable() ->
+ hipe_ppc_registers:allocatable_gpr().
+
+all_precoloured() ->
+ hipe_ppc_registers:all_precoloured().
+
+is_precoloured(Reg) ->
+ hipe_ppc_registers:is_precoloured_gpr(Reg).
+
+is_fixed(R) ->
+ hipe_ppc_registers:is_fixed(R).
+
+physical_name(Reg) ->
+ Reg.
+
+%% CFG stuff
+
+labels(CFG) ->
+ hipe_ppc_cfg:labels(CFG).
+
+var_range(_CFG) ->
+ hipe_gensym:var_range(ppc).
+
+number_of_temporaries(_CFG) ->
+ Highest_temporary = hipe_gensym:get_var(ppc),
+ %% Since we can have temps from 0 to Max adjust by +1.
+ Highest_temporary + 1.
+
+bb(CFG,L) ->
+ hipe_ppc_cfg:bb(CFG,L).
+
+%% PowerPC stuff
+
+def_use(Instruction) ->
+ {defines(Instruction), uses(Instruction)}.
+
+uses(I) ->
+ [X || X <- hipe_ppc_defuse:insn_use_gpr(I),
+ hipe_ppc:temp_is_allocatable(X)].
+
+defines(I) ->
+ [X || X <- hipe_ppc_defuse:insn_def_gpr(I),
+ hipe_ppc:temp_is_allocatable(X)].
+
+is_move(Instruction) ->
+ case hipe_ppc:is_pseudo_move(Instruction) of
+ true ->
+ Dst = hipe_ppc:pseudo_move_dst(Instruction),
+ case hipe_ppc:temp_is_allocatable(Dst) of
+ false -> false;
+ _ ->
+ Src = hipe_ppc:pseudo_move_src(Instruction),
+ hipe_ppc:temp_is_allocatable(Src)
+ end;
+ false -> false
+ end.
+
+reg_nr(Reg) ->
+ hipe_ppc:temp_reg(Reg).
+
+%%% Linear Scan stuff
+
+new_spill_index(SpillIndex) when is_integer(SpillIndex) ->
+ SpillIndex+1.
+
+breadthorder(CFG) ->
+ hipe_ppc_cfg:breadthorder(CFG).
+
+postorder(CFG) ->
+ hipe_ppc_cfg:postorder(CFG).
+
+is_global(R) ->
+ R =:= hipe_ppc_registers:temp1() orelse
+ R =:= hipe_ppc_registers:temp2() orelse
+ R =:= hipe_ppc_registers:temp3() orelse
+ hipe_ppc_registers:is_fixed(R).
+
+is_arg(R) ->
+ hipe_ppc_registers:is_arg(R).
+
+args(CFG) ->
+ hipe_ppc_registers:args(hipe_ppc_cfg:arity(CFG)).