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Diffstat (limited to 'lib/hipe/rtl/hipe_rtl_ssa.erl')
-rw-r--r-- | lib/hipe/rtl/hipe_rtl_ssa.erl | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/lib/hipe/rtl/hipe_rtl_ssa.erl b/lib/hipe/rtl/hipe_rtl_ssa.erl new file mode 100644 index 0000000000..f55cc0dd5c --- /dev/null +++ b/lib/hipe/rtl/hipe_rtl_ssa.erl @@ -0,0 +1,93 @@ +%% -*- 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% +%% +%%---------------------------------------------------------------------- +%% 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. + +%----------------------------------------------------------------------- |