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Diffstat (limited to 'lib/hipe/sparc/hipe_sparc_ra_finalise.erl')
-rw-r--r-- | lib/hipe/sparc/hipe_sparc_ra_finalise.erl | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/lib/hipe/sparc/hipe_sparc_ra_finalise.erl b/lib/hipe/sparc/hipe_sparc_ra_finalise.erl new file mode 100644 index 0000000000..3403636118 --- /dev/null +++ b/lib/hipe/sparc/hipe_sparc_ra_finalise.erl @@ -0,0 +1,254 @@ +%% -*- erlang-indent-level: 2 -*- +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2008-2009. 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_ra_finalise). +-export([finalise/3]). +-include("hipe_sparc.hrl"). + +finalise(Defun, TempMap, FPMap0) -> + Code = hipe_sparc:defun_code(Defun), + {_, SpillLimit} = hipe_sparc:defun_var_range(Defun), + Map = mk_ra_map(TempMap, SpillLimit), + FPMap1 = mk_ra_map_fp(FPMap0, SpillLimit), + NewCode = ra_code(Code, Map, FPMap1, []), + Defun#defun{code=NewCode}. + +ra_code([I|Insns], Map, FPMap, Accum) -> + ra_code(Insns, Map, FPMap, [ra_insn(I, Map, FPMap) | Accum]); +ra_code([], _Map, _FPMap, Accum) -> + lists:reverse(Accum). + +ra_insn(I, Map, FPMap) -> + case I of + #alu{} -> ra_alu(I, Map); + #jmp{} -> ra_jmp(I, Map); + %% #pseudo_br{} -> ra_pseudo_br(I, Map); + #pseudo_call{} -> ra_pseudo_call(I, Map); + #pseudo_move{} -> ra_pseudo_move(I, Map); + #pseudo_set{} -> ra_pseudo_set(I, Map); + #pseudo_tailcall{} -> ra_pseudo_tailcall(I, Map); + #rdy{} -> ra_rdy(I, Map); + #sethi{} -> ra_sethi(I, Map); + #store{} -> ra_store(I, Map); + #fp_binary{} -> ra_fp_binary(I, FPMap); + #fp_unary{} -> ra_fp_unary(I, FPMap); + #pseudo_fload{} -> ra_pseudo_fload(I, Map, FPMap); + #pseudo_fmove{} -> ra_pseudo_fmove(I, FPMap); + #pseudo_fstore{} -> ra_pseudo_fstore(I, Map, FPMap); + _ -> I + end. + +ra_alu(I=#alu{src1=Src1,src2=Src2,dst=Dst}, Map) -> + NewSrc1 = ra_temp(Src1, Map), + NewSrc2 = ra_src(Src2, Map), + NewDst = ra_temp(Dst, Map), + I#alu{src1=NewSrc1,src2=NewSrc2,dst=NewDst}. + +ra_jmp(I=#jmp{src1=Src1,src2=Src2}, Map) -> + NewSrc1 = ra_temp(Src1, Map), + NewSrc2 = ra_src(Src2, Map), + I#jmp{src1=NewSrc1,src2=NewSrc2}. + +-ifdef(notdef). % XXX: only for sparc64, alas +ra_pseudo_br(I=#pseudo_br{src=Src}, Map) -> + NewSrc = ra_temp(Src, Map), + I#pseudo_br{src=NewSrc}. +-endif. + +ra_pseudo_call(I=#pseudo_call{funv=FunV}, Map) -> + NewFunV = ra_funv(FunV, Map), + I#pseudo_call{funv=NewFunV}. + +ra_pseudo_move(I=#pseudo_move{src=Src,dst=Dst}, Map) -> + NewSrc = ra_temp(Src, Map), + NewDst = ra_temp(Dst, Map), + I#pseudo_move{src=NewSrc,dst=NewDst}. + +ra_pseudo_set(I=#pseudo_set{dst=Dst}, Map) -> + NewDst = ra_temp(Dst, Map), + I#pseudo_set{dst=NewDst}. + +ra_pseudo_tailcall(I=#pseudo_tailcall{funv=FunV,stkargs=StkArgs}, Map) -> + NewFunV = ra_funv(FunV, Map), + NewStkArgs = ra_args(StkArgs, Map), + I#pseudo_tailcall{funv=NewFunV,stkargs=NewStkArgs}. + +ra_rdy(I=#rdy{dst=Dst}, Map) -> + NewDst = ra_temp(Dst, Map), + I#rdy{dst=NewDst}. + +ra_sethi(I=#sethi{dst=Dst}, Map) -> + NewDst = ra_temp(Dst, Map), + I#sethi{dst=NewDst}. + +ra_store(I=#store{src=Src,base=Base,disp=Disp}, Map) -> + NewSrc = ra_temp(Src, Map), + NewBase = ra_temp(Base, Map), + NewDisp = ra_src(Disp, Map), + I#store{src=NewSrc,base=NewBase,disp=NewDisp}. + +ra_fp_binary(I=#fp_binary{src1=Src1,src2=Src2,dst=Dst}, FPMap) -> + NewSrc1 = ra_temp_fp(Src1, FPMap), + NewSrc2 = ra_temp_fp(Src2, FPMap), + NewDst = ra_temp_fp(Dst, FPMap), + I#fp_binary{src1=NewSrc1,src2=NewSrc2,dst=NewDst}. + +ra_fp_unary(I=#fp_unary{src=Src,dst=Dst}, FPMap) -> + NewSrc = ra_temp_fp(Src, FPMap), + NewDst = ra_temp_fp(Dst, FPMap), + I#fp_unary{src=NewSrc,dst=NewDst}. + +ra_pseudo_fload(I=#pseudo_fload{base=Base,dst=Dst}, Map, FPMap) -> + NewBase = ra_temp(Base, Map), + NewDst = ra_temp_fp(Dst, FPMap), + I#pseudo_fload{base=NewBase,dst=NewDst}. + +ra_pseudo_fmove(I=#pseudo_fmove{src=Src,dst=Dst}, FPMap) -> + NewSrc = ra_temp_fp(Src, FPMap), + NewDst = ra_temp_fp(Dst, FPMap), + I#pseudo_fmove{src=NewSrc,dst=NewDst}. + +ra_pseudo_fstore(I=#pseudo_fstore{src=Src,base=Base}, Map, FPMap) -> + NewSrc = ra_temp_fp(Src, FPMap), + NewBase = ra_temp(Base, Map), + I#pseudo_fstore{src=NewSrc,base=NewBase}. + +%%% Tailcall stack arguments. + +ra_args([Arg|Args], Map) -> + [ra_temp_or_imm(Arg, Map) | ra_args(Args, Map)]; +ra_args([], _) -> + []. + +ra_temp_or_imm(Arg, Map) -> + case hipe_sparc:is_temp(Arg) of + true -> + ra_temp(Arg, Map); + false -> + Arg + end. + +%%% FunV, Src, and Temp operands. + +ra_funv(FunV, Map) -> + case FunV of + #sparc_temp{} -> ra_temp(FunV, Map); + _ -> FunV + end. + +ra_src(Src, Map) -> + case Src of + #sparc_temp{} -> ra_temp(Src, Map); + _ -> Src + end. + +ra_temp_fp(Temp, FPMap) -> + Reg = hipe_sparc:temp_reg(Temp), + double = hipe_sparc:temp_type(Temp), + case hipe_sparc_registers:is_precoloured_fpr(Reg) of + true -> Temp; + _ -> ra_temp_common(Reg, Temp, FPMap) + end. + +ra_temp(Temp, Map) -> + Reg = hipe_sparc:temp_reg(Temp), + case hipe_sparc:temp_type(Temp) of + 'double' -> + exit({?MODULE,ra_temp,Temp}); + _ -> + case hipe_sparc_registers:is_precoloured_gpr(Reg) of + true -> Temp; + _ -> ra_temp_common(Reg, Temp, Map) + end + end. + +ra_temp_common(Reg, Temp, Map) -> + case gb_trees:lookup(Reg, Map) of + {value, NewReg} -> Temp#sparc_temp{reg=NewReg}; + _ -> Temp + end. + +mk_ra_map(TempMap, SpillLimit) -> + %% Build a partial map from pseudo to reg or spill. + %% Spills are represented as pseudos with indices above SpillLimit. + %% (I'd prefer to use negative indices, but that breaks + %% hipe_sparc_registers:is_precoloured/1.) + %% The frame mapping proper is unchanged, since spills look just like + %% ordinary (un-allocated) pseudos. + lists:foldl(fun(MapLet, Map) -> + {Key,Val} = conv_ra_maplet(MapLet, SpillLimit, is_precoloured_gpr), + gb_trees:insert(Key, Val, Map) + end, + gb_trees:empty(), + TempMap). + +conv_ra_maplet(MapLet = {From,To}, SpillLimit, IsPrecoloured) -> + %% From should be a pseudo, or a hard reg mapped to itself. + if is_integer(From), From =< SpillLimit -> + case hipe_sparc_registers:IsPrecoloured(From) of + false -> []; + _ -> + case To of + {reg, From} -> []; + _ -> exit({?MODULE,conv_ra_maplet,MapLet}) + end + end; + true -> exit({?MODULE,conv_ra_maplet,MapLet}) + end, + %% end of From check + case To of + {reg, NewReg} -> + %% NewReg should be a hard reg, or a pseudo mapped + %% to itself (formals are handled this way). + if is_integer(NewReg) -> + case hipe_sparc_registers:IsPrecoloured(NewReg) of + true -> []; + _ -> if From =:= NewReg -> []; + true -> + exit({?MODULE,conv_ra_maplet,MapLet}) + end + end; + true -> exit({?MODULE,conv_ra_maplet,MapLet}) + end, + %% end of NewReg check + {From, NewReg}; + {spill, SpillIndex} -> + %% SpillIndex should be >= 0. + if is_integer(SpillIndex), SpillIndex >= 0 -> []; + true -> exit({?MODULE,conv_ra_maplet,MapLet}) + end, + %% end of SpillIndex check + ToTempNum = SpillLimit+SpillIndex+1, + MaxTempNum = hipe_gensym:get_var(sparc), + if MaxTempNum >= ToTempNum -> ok; + true -> hipe_gensym:set_var(sparc, ToTempNum) + end, + {From, ToTempNum}; + _ -> exit({?MODULE,conv_ra_maplet,MapLet}) + end. + +mk_ra_map_fp(FPMap, SpillLimit) -> + lists:foldl(fun(MapLet, Map) -> + {Key,Val} = conv_ra_maplet(MapLet, SpillLimit, + is_precoloured_fpr), + gb_trees:insert(Key, Val, Map) + end, + gb_trees:empty(), + FPMap). |