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%% -*- erlang-indent-level: 2 -*-
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
%%
%% 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.
%%
%% %CopyrightEnd%
%%
%%----------------------------------------------------------------------
%% File : hipe_rtl_ssa.erl
%% Author : Kostis Sagonas <[email protected]>
%% Created : 30 Jan 2004
%% Purpose : Provides interface functions for converting RTL code into
%% SSA form and back using the generic SSA converter.
%%----------------------------------------------------------------------
-module(hipe_rtl_ssa).
-export([uses_to_rename/1]). %% needed by hipe_rtl_ssa_const_prop
%% The following defines are needed by the included file below
-define(CODE, hipe_rtl).
-define(CFG, hipe_rtl_cfg).
-define(LIVENESS, hipe_rtl_liveness).
-include("hipe_rtl.hrl").
-include("../ssa/hipe_ssa.inc").
%%----------------------------------------------------------------------
%% Auxiliary operations which seriously differ between Icode and RTL.
%%----------------------------------------------------------------------
defs_to_rename(Statement) ->
Defs = hipe_rtl:defines(Statement),
[D || D <- Defs, not hipe_rtl_arch:is_precoloured(D)].
uses_to_rename(Statement) ->
Uses = hipe_rtl:uses(Statement),
[U || U <- Uses, not hipe_rtl_arch:is_precoloured(U)].
liveout_no_succ() ->
hipe_rtl_arch:live_at_return().
%-----------------------------------------------------------------------
reset_var_indx() ->
hipe_gensym:set_var(rtl, hipe_rtl_arch:first_virtual_reg()).
%%----------------------------------------------------------------------
is_fp_temp(Temp) ->
hipe_rtl:is_fpreg(Temp).
mk_new_fp_temp() ->
hipe_rtl:mk_new_fpreg().
%-----------------------------------------------------------------------
%% Procedure : makePhiMove
%% Purpose : Create an RTL-specific version of a move instruction
%% depending on the type of the arguments.
%% Arguments : Dst, Src - the arguments of a Phi instruction that is
%% to be moved up the predecessor block as part
%% of the SSA un-convert phase.
%% Returns : Code
%% Note : ?CODE here is hipe_rtl
%%----------------------------------------------------------------------
makePhiMove(Dst, Src) ->
case hipe_rtl:is_fpreg(Dst) of
false ->
case hipe_rtl:is_fpreg(Src) of %% this test is just a sanity check
false ->
hipe_rtl:mk_move(Dst, Src)
end;
true ->
case hipe_rtl:is_fpreg(Src) of %% this test is just a sanity check
true ->
hipe_rtl:mk_fmove(Dst, Src)
end
end.
%-----------------------------------------------------------------------
|
