From 84adefa331c4159d432d22840663c38f155cd4c1 Mon Sep 17 00:00:00 2001
From: Erlang/OTP <otp@erlang.org>
Date: Fri, 20 Nov 2009 14:54:40 +0000
Subject: The R13B03 release.

---
 lib/hipe/x86/hipe_x86_ra_ls.erl | 85 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 lib/hipe/x86/hipe_x86_ra_ls.erl

(limited to 'lib/hipe/x86/hipe_x86_ra_ls.erl')

diff --git a/lib/hipe/x86/hipe_x86_ra_ls.erl b/lib/hipe/x86/hipe_x86_ra_ls.erl
new file mode 100644
index 0000000000..ab7b6708ad
--- /dev/null
+++ b/lib/hipe/x86/hipe_x86_ra_ls.erl
@@ -0,0 +1,85 @@
+%%% -*- erlang-indent-level: 2 -*-
+%%%
+%%% %CopyrightBegin%
+%%% 
+%%% Copyright Ericsson AB 2001-2009. 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 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/3,regalloc/7]).
+-define(HIPE_INSTRUMENT_COMPILER, true). %% Turn on instrumentation.
+-include("../main/hipe.hrl").
+
+ra(Defun, SpillIndex, Options) ->
+  NewDefun = Defun, %% hipe_${ARCH}_ra_rename:rename(Defun,Options),
+  CFG = hipe_x86_cfg:init(NewDefun),
+
+  SpillLimit = ?HIPE_X86_SPECIFIC:number_of_temporaries(
+		 CFG),
+  ?inc_counter(bbs_counter, length(hipe_x86_cfg:labels(CFG))),
+  alloc(NewDefun, SpillIndex, SpillLimit, Options).
+
+
+alloc(Defun, SpillIndex, SpillLimit, Options) ->
+  ?inc_counter(ra_iteration_counter,1), 
+  %% ?HIPE_X86_PP:pp(Defun),	
+  CFG = hipe_x86_cfg:init(Defun),
+  {Coloring, NewSpillIndex} = 
+    regalloc(
+      CFG, 
+      ?HIPE_X86_REGISTERS:allocatable()--
+      [?HIPE_X86_REGISTERS:temp1(),
+       ?HIPE_X86_REGISTERS:temp0()],
+      [hipe_x86_cfg:start_label(CFG)],
+      SpillIndex, SpillLimit, Options,
+      ?HIPE_X86_SPECIFIC),
+  {NewDefun, _DidSpill} =
+    ?HIPE_X86_RA_POSTCONDITIONS:check_and_rewrite(
+      Defun, Coloring, 'linearscan'),
+  %% ?HIPE_X86_PP:pp(NewDefun),
+  TempMap = hipe_temp_map:cols2tuple(Coloring, ?HIPE_X86_SPECIFIC),
+  {TempMap2,NewSpillIndex2} = 
+    hipe_spillmin:stackalloc(CFG, [], SpillIndex, Options,
+			     ?HIPE_X86_SPECIFIC, 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),
+  {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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