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Diffstat (limited to 'lib/hipe/regalloc/hipe_arm_specific.erl')
| -rw-r--r-- | lib/hipe/regalloc/hipe_arm_specific.erl | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/lib/hipe/regalloc/hipe_arm_specific.erl b/lib/hipe/regalloc/hipe_arm_specific.erl new file mode 100644 index 0000000000..246095e926 --- /dev/null +++ b/lib/hipe/regalloc/hipe_arm_specific.erl @@ -0,0 +1,168 @@ +%% -*- erlang-indent-level: 2 -*- +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2005-2009. 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_arm_specific). + +%% for hipe_coalescing_regalloc: +-export([number_of_temporaries/1 + ,analyze/1 + ,labels/1 + ,all_precoloured/0 + ,bb/2 + ,liveout/2 + ,reg_nr/1 + ,def_use/1 + ,is_move/1 + ,is_precoloured/1 + ,var_range/1 + ,allocatable/0 + ,non_alloc/1 + ,physical_name/1 + ,reverse_postorder/1 + ,livein/2 + ,uses/1 + ,defines/1 + ]). + +%% for hipe_graph_coloring_regalloc: +-export([is_fixed/1]). + +%% for hipe_ls_regalloc: +-export([args/1, is_arg/1, is_global/1, new_spill_index/1]). +-export([breadthorder/1, postorder/1]). + +%% callbacks for hipe_regalloc_loop +-export([defun_to_cfg/1, + check_and_rewrite/2]). + +defun_to_cfg(Defun) -> + hipe_arm_cfg:init(Defun). + +check_and_rewrite(Defun, Coloring) -> + hipe_arm_ra_postconditions:check_and_rewrite(Defun, Coloring, 'normal'). + +reverse_postorder(CFG) -> + hipe_arm_cfg:reverse_postorder(CFG). + +non_alloc(CFG) -> + non_alloc(hipe_arm_registers:nr_args(), hipe_arm_cfg:params(CFG)). + +%% same as hipe_arm_frame:fix_formals/2 +non_alloc(0, Rest) -> Rest; +non_alloc(N, [_|Rest]) -> non_alloc(N-1, Rest); +non_alloc(_, []) -> []. + +%% Liveness stuff + +analyze(CFG) -> + hipe_arm_liveness_gpr:analyse(CFG). + +livein(Liveness,L) -> + [X || X <- hipe_arm_liveness_gpr:livein(Liveness,L), + hipe_arm:temp_is_allocatable(X)]. + +liveout(BB_in_out_liveness,Label) -> + [X || X <- hipe_arm_liveness_gpr:liveout(BB_in_out_liveness,Label), + hipe_arm:temp_is_allocatable(X)]. + +%% Registers stuff + +allocatable() -> + hipe_arm_registers:allocatable_gpr(). + +all_precoloured() -> + hipe_arm_registers:all_precoloured(). + +is_precoloured(Reg) -> + hipe_arm_registers:is_precoloured_gpr(Reg). + +is_fixed(R) -> + hipe_arm_registers:is_fixed(R). + +physical_name(Reg) -> + Reg. + +%% CFG stuff + +labels(CFG) -> + hipe_arm_cfg:labels(CFG). + +var_range(_CFG) -> + hipe_gensym:var_range(arm). + +number_of_temporaries(_CFG) -> + Highest_temporary = hipe_gensym:get_var(arm), + %% Since we can have temps from 0 to Max adjust by +1. + Highest_temporary + 1. + +bb(CFG,L) -> + hipe_arm_cfg:bb(CFG,L). + +%% ARM stuff + +def_use(Instruction) -> + {defines(Instruction), uses(Instruction)}. + +uses(I) -> + [X || X <- hipe_arm_defuse:insn_use_gpr(I), + hipe_arm:temp_is_allocatable(X)]. + +defines(I) -> + [X || X <- hipe_arm_defuse:insn_def_gpr(I), + hipe_arm:temp_is_allocatable(X)]. + +is_move(Instruction) -> + case hipe_arm:is_pseudo_move(Instruction) of + true -> + Dst = hipe_arm:pseudo_move_dst(Instruction), + case hipe_arm:temp_is_allocatable(Dst) of + false -> false; + _ -> + Src = hipe_arm:pseudo_move_src(Instruction), + hipe_arm:temp_is_allocatable(Src) + end; + false -> false + end. + +reg_nr(Reg) -> + hipe_arm:temp_reg(Reg). + +%%% Linear Scan stuff + +new_spill_index(SpillIndex) when is_integer(SpillIndex) -> + SpillIndex+1. + +breadthorder(CFG) -> + hipe_arm_cfg:breadthorder(CFG). + +postorder(CFG) -> + hipe_arm_cfg:postorder(CFG). + +is_global(R) -> + R =:= hipe_arm_registers:temp1() orelse + R =:= hipe_arm_registers:temp2() orelse + R =:= hipe_arm_registers:temp3() orelse + hipe_arm_registers:is_fixed(R). + +is_arg(R) -> + hipe_arm_registers:is_arg(R). + +args(CFG) -> + hipe_arm_registers:args(hipe_arm_cfg:arity(CFG)). |