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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/hipe/ppc/hipe_ppc_ra_ls.erl
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The R13B03 release.OTP_R13B03
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+%%% -*- erlang-indent-level: 2 -*-
+%%%
+%%% %CopyrightBegin%
+%%%
+%%% Copyright Ericsson AB 2005-2009. 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 PowerPC
+
+-module(hipe_ppc_ra_ls).
+-export([ra/3]).
+
+ra(Defun, SpillIndex, Options) ->
+ NewDefun = Defun, %% hipe_${ARCH}_ra_rename:rename(Defun,Options),
+ CFG = hipe_ppc_cfg:init(NewDefun),
+ SpillLimit = hipe_ppc_specific:number_of_temporaries(CFG),
+ alloc(NewDefun, SpillIndex, SpillLimit, Options).
+
+alloc(Defun, SpillIndex, SpillLimit, Options) ->
+ CFG = hipe_ppc_cfg:init(Defun),
+ {Coloring, _NewSpillIndex} =
+ regalloc(
+ CFG,
+ hipe_ppc_registers:allocatable_gpr()--
+ [hipe_ppc_registers:temp3(),
+ hipe_ppc_registers:temp2(),
+ hipe_ppc_registers:temp1()],
+ [hipe_ppc_cfg:start_label(CFG)],
+ SpillIndex, SpillLimit, Options,
+ hipe_ppc_specific),
+ {NewDefun, _DidSpill} =
+ hipe_ppc_ra_postconditions:check_and_rewrite(
+ Defun, Coloring, 'linearscan'),
+ TempMap = hipe_temp_map:cols2tuple(Coloring, hipe_ppc_specific),
+ {TempMap2,_NewSpillIndex2} =
+ hipe_spillmin:stackalloc(CFG, [], SpillIndex, Options,
+ hipe_ppc_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).