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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/hipe/rtl/hipe_rtl_arith_32.erl
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The R13B03 release.OTP_R13B03
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+%% -*- erlang-indent-level: 2 -*-
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2003-2009. 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%
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Copyright (c) 2002 by Erik Johansson.
+%% ====================================================================
+%% Filename : hipe_rtl_arith_32.erl
+%% Module : hipe_rtl_arith_32
+%% Purpose : To implement 32-bit RTL-arithmetic
+%% Notes : The arithmetic works on 32-bit signed integers.
+%% The implementation is taken from the implementation
+%% of arithmetic on SPARC.
+%% XXX: This code is seldom used, and hence also
+%% seldom tested.
+%% Look here for strange bugs appearing when
+%% turning on rtl_prop.
+%%
+%% History : * 2002-10-23 Erik Stenman ([email protected]): Created.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+-module(hipe_rtl_arith_32).
+
+-export([eval_alu/3, eval_alub/4, eval_cond/3, eval_cond_bits/5]).
+
+-define(BITS, 32).
+-define(SIGN_BIT, 31).
+-define(WORDMASK, 16#ffffffff).
+-define(MAX_SIGNED_INT, 16#7fffffff).
+-define(MIN_SIGNED_INT, -16#80000000).
+-define(MAX_UNSIGNED_INT, 16#ffffffff).
+
+-include("../main/hipe.hrl"). %% for ?EXIT
+
+-include("hipe_rtl_arith.inc").