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%% -*- erlang-indent-level: 2 -*-
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2008-2009. 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%
%%
%% Linear Scan register allocator for SPARC
-module(hipe_sparc_ra_ls).
-export([ra/3]).
ra(Defun, SpillIndex, Options) ->
NewDefun = Defun, %% hipe_${ARCH}_ra_rename:rename(Defun,Options),
CFG = hipe_sparc_cfg:init(NewDefun),
SpillLimit = hipe_sparc_specific:number_of_temporaries(CFG),
alloc(NewDefun, SpillIndex, SpillLimit, Options).
alloc(Defun, SpillIndex, SpillLimit, Options) ->
CFG = hipe_sparc_cfg:init(Defun),
{Coloring, _NewSpillIndex} =
regalloc(
CFG,
hipe_sparc_registers:allocatable_gpr()--
[hipe_sparc_registers:temp3(),
hipe_sparc_registers:temp2(),
hipe_sparc_registers:temp1()],
[hipe_sparc_cfg:start_label(CFG)],
SpillIndex, SpillLimit, Options,
hipe_sparc_specific),
{NewDefun, _DidSpill} =
hipe_sparc_ra_postconditions:check_and_rewrite(
Defun, Coloring, 'linearscan'),
TempMap = hipe_temp_map:cols2tuple(Coloring, hipe_sparc_specific),
{TempMap2,_NewSpillIndex2} =
hipe_spillmin:stackalloc(CFG, [], SpillIndex, Options,
hipe_sparc_specific, TempMap),
Coloring2 =
hipe_spillmin:mapmerge(hipe_temp_map:to_substlist(TempMap), TempMap2),
{NewDefun, Coloring2}.
regalloc(CFG, PhysRegs, Entrypoints, SpillIndex, DontSpill, Options, Target) ->
hipe_ls_regalloc:regalloc(
CFG, PhysRegs, Entrypoints, SpillIndex, DontSpill, Options, Target).
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