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%%% -*- erlang-indent-level: 2 -*-
%%%
%%% 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.
%%%
%%% Linear Scan register allocator for x86
-ifdef(HIPE_AMD64).
-define(HIPE_X86_RA_LS, hipe_amd64_ra_ls).
-define(HIPE_X86_PP, hipe_amd64_pp).
-define(HIPE_X86_RA_POSTCONDITIONS, hipe_amd64_ra_postconditions).
-define(HIPE_X86_REGISTERS, hipe_amd64_registers).
-define(HIPE_X86_SPECIFIC, hipe_amd64_specific).
-else.
-define(HIPE_X86_RA_LS, hipe_x86_ra_ls).
-define(HIPE_X86_PP, hipe_x86_pp).
-define(HIPE_X86_RA_POSTCONDITIONS, hipe_x86_ra_postconditions).
-define(HIPE_X86_REGISTERS, hipe_x86_registers).
-define(HIPE_X86_SPECIFIC, hipe_x86_specific).
-endif.
-module(?HIPE_X86_RA_LS).
-export([ra/4,ra_fp/5]).
-define(HIPE_INSTRUMENT_COMPILER, true). %% Turn on instrumentation.
-include("../main/hipe.hrl").
ra(CFG, Liveness, SpillIndex, Options) ->
SpillLimit = ?HIPE_X86_SPECIFIC:number_of_temporaries(
CFG, no_context),
?inc_counter(bbs_counter, length(hipe_x86_cfg:labels(CFG))),
alloc(CFG, Liveness, SpillIndex, SpillLimit, Options).
ra_fp(CFG, Liveness, Options, TargetMod, TargetCtx) ->
?inc_counter(ra_calls_counter,1),
%% ?inc_counter(ra_caller_saves_counter,count_caller_saves(CFG)),
SpillIndex = 0,
SpillLimit = TargetMod:number_of_temporaries(CFG, TargetCtx),
?inc_counter(bbs_counter, length(hipe_x86_cfg:labels(CFG))),
?inc_counter(ra_iteration_counter,1),
%% ?HIPE_X86_PP:pp(Defun),
{Coloring,NewSpillIndex} =
regalloc(CFG, Liveness,
TargetMod:allocatable('linearscan', TargetCtx),
[hipe_x86_cfg:start_label(CFG)],
SpillIndex, SpillLimit, Options,
TargetMod, TargetCtx),
{NewCFG, _DidSpill} =
TargetMod:check_and_rewrite(CFG, Coloring, 'linearscan', TargetCtx),
TempMap = hipe_temp_map:cols2tuple(Coloring, TargetMod, TargetCtx),
{TempMap2, NewSpillIndex2} =
hipe_spillmin:stackalloc(CFG, Liveness, [], SpillIndex, Options,
TargetMod, TargetCtx, TempMap),
Coloring2 =
hipe_spillmin:mapmerge(hipe_temp_map:to_substlist(TempMap), TempMap2),
?add_spills(Options, NewSpillIndex),
{NewCFG, Liveness, Coloring2, NewSpillIndex2}.
alloc(CFG, Liveness, SpillIndex, SpillLimit, Options) ->
?inc_counter(ra_iteration_counter,1),
%% ?HIPE_X86_PP:pp(Defun),
{Coloring, NewSpillIndex} =
regalloc(
CFG, Liveness,
?HIPE_X86_REGISTERS:allocatable()--
[?HIPE_X86_REGISTERS:temp1(),
?HIPE_X86_REGISTERS:temp0()],
[hipe_x86_cfg:start_label(CFG)],
SpillIndex, SpillLimit, Options,
?HIPE_X86_SPECIFIC, no_context),
{NewCFG, _DidSpill} =
?HIPE_X86_RA_POSTCONDITIONS:check_and_rewrite(
CFG, Coloring, 'linearscan'),
%% ?HIPE_X86_PP:pp(NewDefun),
TempMap = hipe_temp_map:cols2tuple(Coloring, ?HIPE_X86_SPECIFIC, no_context),
{TempMap2,NewSpillIndex2} =
hipe_spillmin:stackalloc(CFG, Liveness, [], SpillIndex, Options,
?HIPE_X86_SPECIFIC, no_context, TempMap),
Coloring2 =
hipe_spillmin:mapmerge(hipe_temp_map:to_substlist(TempMap), TempMap2),
case proplists:get_bool(verbose_spills, Options) of
true ->
?msg("Stack slot size: ~p~n",[NewSpillIndex2-SpillIndex]);
false ->
ok
end,
?add_spills(Options, NewSpillIndex),
{NewCFG, Liveness, Coloring2}.
regalloc(CFG, Liveness, PhysRegs, Entrypoints, SpillIndex, DontSpill, Options,
TgtMod, TgtCtx) ->
hipe_ls_regalloc:regalloc(CFG, Liveness, PhysRegs, Entrypoints, SpillIndex,
DontSpill, Options, TgtMod, TgtCtx).
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