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/sparc/hipe_sparc_finalise.erl | 138 +++++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 lib/hipe/sparc/hipe_sparc_finalise.erl

(limited to 'lib/hipe/sparc/hipe_sparc_finalise.erl')

diff --git a/lib/hipe/sparc/hipe_sparc_finalise.erl b/lib/hipe/sparc/hipe_sparc_finalise.erl
new file mode 100644
index 0000000000..b44a21f7c0
--- /dev/null
+++ b/lib/hipe/sparc/hipe_sparc_finalise.erl
@@ -0,0 +1,138 @@
+%% -*- erlang-indent-level: 2 -*-
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2007-2009. 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_sparc_finalise).
+-export([finalise/1]).
+-include("hipe_sparc.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
+    #bp{'cond'='a'} ->
+      [hipe_sparc:mk_nop(),
+       I |
+       Accum];
+    #call_rec{} ->
+      [hipe_sparc:mk_nop(),
+       I |
+       Accum];
+    #call_tail{} ->
+      RA = hipe_sparc:mk_ra(),
+      TempRA = hipe_sparc:mk_temp1(),
+      [hipe_sparc:mk_mov(TempRA, RA),
+       I,	% becomes a call, which clobbers RA
+       hipe_sparc:mk_mov(RA, TempRA) |
+       Accum];
+    #jmp{} ->
+      [hipe_sparc:mk_nop(),
+       I |
+       Accum];
+    #pseudo_bp{'cond'=Cond,true_label=TrueLab,false_label=FalseLab, pred=Pred} ->
+      [hipe_sparc:mk_nop(),
+       hipe_sparc:mk_b_label(FalseLab),
+       hipe_sparc:mk_nop(),
+       hipe_sparc:mk_bp(Cond, TrueLab, Pred) |
+       Accum];
+    %% #pseudo_br{} -> expand_pseudo_br(I, Accum);
+    #pseudo_call{funv=FunV,sdesc=SDesc,contlab=ContLab,linkage=Linkage} ->
+      [hipe_sparc:mk_nop(),
+       hipe_sparc:mk_b_label(ContLab),
+       hipe_sparc:mk_nop(),
+       case FunV of
+	 #sparc_temp{} ->
+	   hipe_sparc:mk_jmpl(FunV, SDesc);
+	 _ ->
+	   hipe_sparc:mk_call_rec(FunV, SDesc, Linkage)
+       end |
+       Accum];
+    #pseudo_ret{} ->
+      RA = hipe_sparc:mk_ra(),
+      [hipe_sparc:mk_nop(),
+       hipe_sparc:mk_jmp(RA, hipe_sparc:mk_simm13(8), []) |
+       Accum];
+    #pseudo_tailcall_prepare{} ->
+      Accum;
+    _ ->
+      XXX =
+	case I of
+	  #alu{} -> true;
+	  #comment{} -> true;
+	  #label{} -> true;
+	  #pseudo_set{} -> true;
+	  #rdy{} -> true;
+	  #sethi{} -> true;
+	  #store{} -> true;
+	  #bp{} -> false;
+	  %% #br{} -> false;
+	  #call_rec{} -> false;
+	  #call_tail{} -> false;
+	  #jmp{} -> false;
+	  #jmpl{} -> false;
+	  #pseudo_bp{} -> false;
+	  %% #pseudo_br{} -> false;
+	  #pseudo_call{} -> false;
+	  #pseudo_call_prepare{} -> false;
+	  #pseudo_move{} -> false;
+	  #pseudo_ret{} -> false;
+	  #pseudo_tailcall{} -> false;
+	  #pseudo_tailcall_prepare{} -> false;
+	  #fp_binary{} -> true;
+	  #fp_unary{} -> true;
+	  #pseudo_fload{} -> true;
+	  #pseudo_fstore{} -> true
+	end,
+      case XXX of
+	true -> [];
+	false -> exit({?MODULE,expand_insn,I})
+      end,
+      [I|Accum]
+  end.
+
+-ifdef(notdef).	% XXX: only for sparc64, alas
+expand_pseudo_br(I, Accum) ->
+  #pseudo_br{rcond=RCond,src=Src,true_label=TrueLab,false_label=FalseLab, pred=Pred} = I,
+  [hipe_sparc:mk_nop(),
+   hipe_sparc:mk_b_label(FalseLab),
+   hipe_sparc:mk_nop(),
+   hipe_sparc:mk_br(RCond, Src, TrueLab, Pred) |
+   Accum].
+-endif.
+
+peep(Insns) ->
+  peep_list(Insns, []).
+
+peep_list([#bp{'cond'='a',label=Label}, #sethi{uimm22=#sparc_uimm22{value=0},dst=#sparc_temp{reg=0}} | (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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