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/ppc/hipe_ppc_finalise.erl | 65 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 lib/hipe/ppc/hipe_ppc_finalise.erl

(limited to 'lib/hipe/ppc/hipe_ppc_finalise.erl')

diff --git a/lib/hipe/ppc/hipe_ppc_finalise.erl b/lib/hipe/ppc/hipe_ppc_finalise.erl
new file mode 100644
index 0000000000..c4b9526fec
--- /dev/null
+++ b/lib/hipe/ppc/hipe_ppc_finalise.erl
@@ -0,0 +1,65 @@
+%% -*- 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%
+%%
+
+-module(hipe_ppc_finalise).
+-export([finalise/1]).
+-include("hipe_ppc.hrl").
+
+finalise(Defun) ->
+  #defun{code=Code0} = Defun,
+  Code1 = peep(expand(Code0)),
+  Defun#defun{code=Code1}.
+
+expand(Insns) ->
+  expand_list(Insns, []).
+
+expand_list([I|Insns], Accum) ->
+  expand_list(Insns, expand_insn(I, Accum));
+expand_list([], Accum) ->
+  lists:reverse(Accum).
+
+expand_insn(I, Accum) ->
+  case I of
+    #pseudo_bc{bcond=BCond,true_label=TrueLab,false_label=FalseLab,pred=Pred} ->
+      [hipe_ppc:mk_b_label(FalseLab),
+       hipe_ppc:mk_bc(BCond, TrueLab, Pred) |
+       Accum];
+    #pseudo_call{func=FunC,sdesc=SDesc,contlab=ContLab,linkage=Linkage} ->
+      [hipe_ppc:mk_b_label(ContLab),
+       case FunC of
+	 'ctr' -> hipe_ppc:mk_bctrl(SDesc);
+	 Fun -> hipe_ppc:mk_bl(Fun, SDesc, Linkage)
+       end |
+       Accum];
+    #pseudo_tailcall_prepare{} ->
+      Accum;
+    _ ->
+      [I|Accum]
+  end.
+
+peep(Insns) ->
+  peep_list(Insns, []).
+
+peep_list([#b_label{label=Label} | (Insns = [#label{label=Label}|_])], Accum) ->
+  peep_list(Insns, Accum);
+peep_list([I|Insns], Accum) ->
+  peep_list(Insns, [I|Accum]);
+peep_list([], Accum) ->
+  lists:reverse(Accum).
-- 
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