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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/regalloc/hipe_regalloc_loop.erl
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The R13B03 release.OTP_R13B03
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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%
+%%%
+%%% Common wrapper for graph_coloring and coalescing regallocs.
+
+-module(hipe_regalloc_loop).
+-export([ra/5, ra_fp/4]).
+
+%%-define(HIPE_INSTRUMENT_COMPILER, true). %% Turn on instrumentation.
+-include("../main/hipe.hrl").
+
+ra(Defun, SpillIndex, Options, RegAllocMod, TargetMod) ->
+ {NewDefun, Coloring, _NewSpillIndex} =
+ ra_common(Defun, SpillIndex, Options, RegAllocMod, TargetMod),
+ {NewDefun, Coloring}.
+
+ra_fp(Defun, Options, RegAllocMod, TargetMod) ->
+ ra_common(Defun, 0, Options, RegAllocMod, TargetMod).
+
+ra_common(Defun, SpillIndex, Options, RegAllocMod, TargetMod) ->
+ ?inc_counter(ra_calls_counter, 1),
+ CFG = TargetMod:defun_to_cfg(Defun),
+ SpillLimit = TargetMod:number_of_temporaries(CFG),
+ alloc(Defun, SpillLimit, SpillIndex, Options, RegAllocMod, TargetMod).
+
+alloc(Defun, SpillLimit, SpillIndex, Options, RegAllocMod, TargetMod) ->
+ ?inc_counter(ra_iteration_counter, 1),
+ CFG = TargetMod:defun_to_cfg(Defun),
+ {Coloring, _NewSpillIndex} =
+ RegAllocMod:regalloc(CFG, SpillIndex, SpillLimit, TargetMod, Options),
+ {NewDefun, DidSpill} = TargetMod:check_and_rewrite(Defun, Coloring),
+ case DidSpill of
+ false -> %% No new temps, we are done.
+ ?add_spills(Options, _NewSpillIndex),
+ TempMap = hipe_temp_map:cols2tuple(Coloring, TargetMod),
+ {TempMap2, NewSpillIndex2} =
+ hipe_spillmin:stackalloc(CFG, [], SpillIndex, Options,
+ TargetMod, TempMap),
+ Coloring2 =
+ hipe_spillmin:mapmerge(hipe_temp_map:to_substlist(TempMap), TempMap2),
+ %% case proplists:get_bool(verbose_spills, Options) of
+ %% true ->
+ %% ?msg("Num spill slots used: ~p~n", [NewSpillIndex2-SpillIndex]);
+ %% false ->
+ %% ok
+ %% end,
+ {NewDefun, Coloring2, NewSpillIndex2};
+ _ ->
+ %% Since SpillLimit is used as a low-water-mark
+ %% the list of temps not to spill is uninteresting.
+ alloc(NewDefun, SpillLimit, SpillIndex, Options, RegAllocMod, TargetMod)
+ end.