1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
%%% -*- erlang-indent-level: 2 -*-
%%%
%%% %CopyrightBegin%
%%%
%%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
%%%
%%% Licensed under the Apache License, Version 2.0 (the "License");
%%% you may not use this file except in compliance with the License.
%%% You may obtain a copy of the License at
%%%
%%% http://www.apache.org/licenses/LICENSE-2.0
%%%
%%% Unless required by applicable law or agreed to in writing, software
%%% distributed under the License is distributed on an "AS IS" BASIS,
%%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%%% See the License for the specific language governing permissions 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(CFG, SpillIndex, Options, RegAllocMod, TargetMod) ->
{NewCFG, Coloring, _NewSpillIndex} =
ra_common(CFG, SpillIndex, Options, RegAllocMod, TargetMod),
{NewCFG, Coloring}.
ra_fp(CFG, Options, RegAllocMod, TargetMod) ->
ra_common(CFG, 0, Options, RegAllocMod, TargetMod).
ra_common(CFG, SpillIndex, Options, RegAllocMod, TargetMod) ->
?inc_counter(ra_calls_counter, 1),
SpillLimit = TargetMod:number_of_temporaries(CFG),
alloc(CFG, SpillLimit, SpillIndex, Options, RegAllocMod, TargetMod).
alloc(CFG0, SpillLimit, SpillIndex, Options, RegAllocMod, TargetMod) ->
?inc_counter(ra_iteration_counter, 1),
{Coloring, _NewSpillIndex, CFG, MaybeLiveness} =
case proplists:get_bool(ra_prespill, Options) of
true ->
hipe_regalloc_prepass:regalloc(
RegAllocMod, CFG0, SpillIndex, SpillLimit, TargetMod, Options);
false ->
{C, SI, L} = RegAllocMod:regalloc(CFG0, SpillIndex, SpillLimit,
TargetMod, Options),
{C, SI, CFG0, L}
end,
{NewCFG, DidSpill} = TargetMod:check_and_rewrite(CFG, Coloring),
case DidSpill of
false -> %% No new temps, we are done.
?add_spills(Options, _NewSpillIndex),
TempMap = hipe_temp_map:cols2tuple(Coloring, TargetMod),
Liveness = liveness_force(TargetMod, CFG, MaybeLiveness),
{TempMap2, NewSpillIndex2} =
hipe_spillmin:stackalloc(CFG, Liveness, [], 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,
{NewCFG, Coloring2, NewSpillIndex2};
_ ->
%% Since SpillLimit is used as a low-water-mark
%% the list of temps not to spill is uninteresting.
alloc(NewCFG, SpillLimit, SpillIndex, Options, RegAllocMod, TargetMod)
end.
liveness_force(TargetMod, CFG, undefined) -> TargetMod:analyze(CFG);
liveness_force(_TargetMod, _CFG, Defined) -> Defined.
|
