%% -*- erlang-indent-level: 2 -*-
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2005-2012. 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_rtl_to_sparc).
-export([translate/1]).
-include("../rtl/hipe_rtl.hrl").
translate(RTL) ->
hipe_gensym:init(sparc),
hipe_gensym:set_var(sparc, hipe_sparc_registers:first_virtual()),
hipe_gensym:set_label(sparc, hipe_gensym:get_label(rtl)),
Map0 = vmap_empty(),
{Formals, Map1} = conv_formals(hipe_rtl:rtl_params(RTL), Map0),
OldData = hipe_rtl:rtl_data(RTL),
{Code0, NewData} = conv_insn_list(hipe_rtl:rtl_code(RTL), Map1, OldData),
{RegFormals, _} = split_args(Formals),
Code =
case RegFormals of
[] -> Code0;
_ -> [hipe_sparc:mk_label(hipe_gensym:get_next_label(sparc)) |
move_formals(RegFormals, Code0)]
end,
IsClosure = hipe_rtl:rtl_is_closure(RTL),
IsLeaf = hipe_rtl:rtl_is_leaf(RTL),
hipe_sparc:mk_defun(hipe_rtl:rtl_fun(RTL),
Formals,
IsClosure,
IsLeaf,
Code,
NewData,
[],
[]).
conv_insn_list([H|T], Map, Data) ->
{NewH, NewMap, NewData1} = conv_insn(H, Map, Data),
%% io:format("~w \n ==>\n ~w\n- - - - - - - - -\n",[H,NewH]),
{NewT, NewData2} = conv_insn_list(T, NewMap, NewData1),
{NewH ++ NewT, NewData2};
conv_insn_list([], _, Data) ->
{[], Data}.
conv_insn(I, Map, Data) ->
case I of
#alu{} -> conv_alu(I, Map, Data);
#alub{} -> conv_alub(I, Map, Data);
#branch{} -> conv_branch(I, Map, Data);
#call{} -> conv_call(I, Map, Data);
#comment{} -> conv_comment(I, Map, Data);
#enter{} -> conv_enter(I, Map, Data);
#goto{} -> conv_goto(I, Map, Data);
#label{} -> conv_label(I, Map, Data);
#load{} -> conv_load(I, Map, Data);
#load_address{} -> conv_load_address(I, Map, Data);
#load_atom{} -> conv_load_atom(I, Map, Data);
#move{} -> conv_move(I, Map, Data);
#return{} -> conv_return(I, Map, Data);
#store{} -> conv_store(I, Map, Data);
#switch{} -> conv_switch(I, Map, Data); % XXX: only switch uses/updates Data
#fconv{} -> conv_fconv(I, Map, Data);
#fmove{} -> conv_fmove(I, Map, Data);
#fload{} -> conv_fload(I, Map, Data);
#fstore{} -> conv_fstore(I, Map, Data);
#fp{} -> conv_fp_binary(I, Map, Data);
#fp_unop{} -> conv_fp_unary(I, Map, Data);
_ -> exit({?MODULE,conv_insn,I})
end.
conv_fconv(I, Map, Data) ->
%% Dst := (double)Src, where Dst is FP reg and Src is GP reg or imm
{Src, Map1} = conv_src(hipe_rtl:fconv_src(I), Map),
{Dst, Map2} = conv_fpreg(hipe_rtl:fconv_dst(I), Map1),
I2 = mk_fconv(Src, Dst),
{I2, Map2, Data}.
mk_fconv(Src, Dst) ->
CSP = hipe_sparc:mk_temp(14, 'untagged'), % o6
Offset = 100,
mk_store('stw', Src, CSP, Offset) ++
[hipe_sparc:mk_pseudo_fload(CSP, hipe_sparc:mk_simm13(Offset), Dst, true),
hipe_sparc:mk_fp_unary('fitod', Dst, Dst)].
conv_fmove(I, Map, Data) ->
%% Dst := Src, where both Dst and Src are FP regs
{Src, Map1} = conv_fpreg(hipe_rtl:fmove_src(I), Map),
{Dst, Map2} = conv_fpreg(hipe_rtl:fmove_dst(I), Map1),
I2 = mk_fmove(Src, Dst),
{I2, Map2, Data}.
mk_fmove(Src, Dst) ->
[hipe_sparc:mk_pseudo_fmove(Src, Dst)].
conv_fload(I, Map, Data) ->
%% Dst := MEM[Base+Off], where Dst is FP reg
{Base1, Map1} = conv_src(hipe_rtl:fload_src(I), Map),
{Base2, Map2} = conv_src(hipe_rtl:fload_offset(I), Map1),
{Dst, Map3} = conv_fpreg(hipe_rtl:fload_dst(I), Map2),
I2 = mk_fload(Base1, Base2, Dst),
{I2, Map3, Data}.
mk_fload(Base1, Base2, Dst) ->
case hipe_sparc:is_temp(Base1) of
true ->
case hipe_sparc:is_temp(Base2) of
true ->
mk_fload_rr(Base1, Base2, Dst);
_ ->
mk_fload_ri(Base1, Base2, Dst)
end;
_ ->
case hipe_sparc:is_temp(Base2) of
true ->
mk_fload_ri(Base2, Base1, Dst);
_ ->
mk_fload_ii(Base1, Base2, Dst)
end
end.
mk_fload_rr(Base1, Base2, Dst) ->
Tmp = new_untagged_temp(),
Disp = hipe_sparc:mk_simm13(0),
[hipe_sparc:mk_alu('add', Base1, Base2, Tmp),
hipe_sparc:mk_pseudo_fload(Tmp, Disp, Dst, false)].
mk_fload_ii(Base1, Base2, Dst) ->
io:format("~w: RTL fload with two immediates\n", [?MODULE]),
Tmp = new_untagged_temp(),
mk_set(Base1, Tmp, mk_fload_ri(Tmp, Base2, Dst)).
mk_fload_ri(Base, Disp, Dst) ->
hipe_sparc:mk_fload(Base, Disp, Dst, 'new').
conv_fstore(I, Map, Data) ->
%% MEM[Base+Off] := Src, where Src is FP reg
{Base1, Map1} = conv_dst(hipe_rtl:fstore_base(I), Map),
{Base2, Map2} = conv_src(hipe_rtl:fstore_offset(I), Map1),
{Src, Map3} = conv_fpreg(hipe_rtl:fstore_src(I), Map2),
I2 = mk_fstore(Src, Base1, Base2),
{I2, Map3, Data}.
mk_fstore(Src, Base1, Base2) ->
case hipe_sparc:is_temp(Base2) of
true ->
mk_fstore_rr(Src, Base1, Base2);
_ ->
mk_fstore_ri(Src, Base1, Base2)
end.
mk_fstore_rr(Src, Base1, Base2) ->
Tmp = new_untagged_temp(),
Disp = hipe_sparc:mk_simm13(0),
[hipe_sparc:mk_alu('add', Base1, Base2, Tmp),
hipe_sparc:mk_pseudo_fstore(Src, Tmp, Disp)].
mk_fstore_ri(Src, Base, Disp) ->
hipe_sparc:mk_fstore(Src, Base, Disp, 'new').
conv_fp_binary(I, Map, Data) ->
{Src1, Map1} = conv_fpreg(hipe_rtl:fp_src1(I), Map),
{Src2, Map2} = conv_fpreg(hipe_rtl:fp_src2(I), Map1),
{Dst, Map3} = conv_fpreg(hipe_rtl:fp_dst(I), Map2),
RtlFpOp = hipe_rtl:fp_op(I),
I2 = mk_fp_binary(RtlFpOp, Src1, Src2, Dst),
{I2, Map3, Data}.
mk_fp_binary(RtlFpOp, Src1, Src2, Dst) ->
FpBinOp =
case RtlFpOp of
'fadd' -> 'faddd';
'fdiv' -> 'fdivd';
'fmul' -> 'fmuld';
'fsub' -> 'fsubd'
end,
[hipe_sparc:mk_fp_binary(FpBinOp, Src1, Src2, Dst)].
conv_fp_unary(I, Map, Data) ->
{Src, Map1} = conv_fpreg(hipe_rtl:fp_unop_src(I), Map),
{Dst, Map2} = conv_fpreg(hipe_rtl:fp_unop_dst(I), Map1),
RtlFpUnOp = hipe_rtl:fp_unop_op(I),
I2 = mk_fp_unary(RtlFpUnOp, Src, Dst),
{I2, Map2, Data}.
mk_fp_unary(RtlFpUnOp, Src, Dst) ->
FpUnOp =
case RtlFpUnOp of
'fchs' -> 'fnegd'
end,
[hipe_sparc:mk_fp_unary(FpUnOp, Src, Dst)].
conv_alu(I, Map, Data) ->
%% dst = src1 aluop src2
{Dst, Map0} = conv_dst(hipe_rtl:alu_dst(I), Map),
{Src1, Map1} = conv_src(hipe_rtl:alu_src1(I), Map0),
{Src2, Map2} = conv_src(hipe_rtl:alu_src2(I), Map1),
AluOp = conv_aluop(hipe_rtl:alu_op(I)),
{I2, _DidCommute} = mk_alu(AluOp, Src1, Src2, Dst),
{I2, Map2, Data}.
mk_alu(XAluOp, Src1, Src2, Dst) ->
case hipe_sparc:is_temp(Src1) of
true ->
case hipe_sparc:is_temp(Src2) of
true ->
{mk_alu_rs(XAluOp, Src1, Src2, Dst),
false};
_ ->
{mk_alu_ri(XAluOp, Src1, Src2, Dst),
false}
end;
_ ->
case hipe_sparc:is_temp(Src2) of
true ->
mk_alu_ir(XAluOp, Src1, Src2, Dst);
_ ->
{mk_alu_ii(XAluOp, Src1, Src2, Dst),
false}
end
end.
mk_alu_ii(XAluOp, Src1, Src2, Dst) ->
io:format("~w: ALU with two immediates (~w ~w ~w ~w)\n",
[?MODULE, XAluOp, Src1, Src2, Dst]),
Tmp = new_untagged_temp(),
mk_set(Src1, Tmp, mk_alu_ri(XAluOp, Tmp, Src2, Dst)).
mk_alu_ir(XAluOp, Src1, Src2, Dst) ->
case xaluop_commutes(XAluOp) of
true ->
{mk_alu_ri(XAluOp, Src2, Src1, Dst),
true};
_ ->
Tmp = new_untagged_temp(),
{mk_set(Src1, Tmp, mk_alu_rs(XAluOp, Tmp, Src2, Dst)),
false}
end.
mk_alu_ri(XAluOp, Src1, Src2, Dst) ->
case xaluop_is_shift(XAluOp) of
true ->
mk_shift_ri(XAluOp, Src1, Src2, Dst);
false ->
mk_arith_ri(XAluOp, Src1, Src2, Dst)
end.
mk_shift_ri(XShiftOp, Src1, Src2, Dst) when is_integer(Src2) ->
if Src2 >= 0, Src2 < 32 -> % XXX: sparc64: < 64
mk_alu_rs(XShiftOp, Src1, hipe_sparc:mk_uimm5(Src2), Dst);
true ->
exit({?MODULE,mk_shift_ri,Src2}) % excessive shifts are errors
end.
mk_arith_ri(XAluOp, Src1, Src2, Dst) when is_integer(Src2) ->
if -4096 =< Src2, Src2 < 4096 ->
mk_alu_rs(XAluOp, Src1, hipe_sparc:mk_simm13(Src2), Dst);
true ->
Tmp = new_untagged_temp(),
mk_set(Src2, Tmp, mk_alu_rs(XAluOp, Src1, Tmp, Dst))
end.
mk_alu_rs(XAluOp, Src1, Src2, Dst) ->
[hipe_sparc:mk_alu(xaluop_normalise(XAluOp), Src1, Src2, Dst)].
conv_alub(I, Map, Data) ->
%% dst = src1 aluop src2; if COND goto label
{Dst, Map0} = conv_dst(hipe_rtl:alub_dst(I), Map),
{Src1, Map1} = conv_src(hipe_rtl:alub_src1(I), Map0),
{Src2, Map2} = conv_src(hipe_rtl:alub_src2(I), Map1),
Cond = conv_cond(hipe_rtl:alub_cond(I)),
RtlAlubOp = hipe_rtl:alub_op(I),
I2 =
case RtlAlubOp of
'mul' ->
%% To check for overflow in 32x32->32 multiplication:
%% smul Src1,Src2,Dst % Dst is lo32(Res), %y is %hi32(Res)
%% rd %y,TmpHi
%% sra Dst,31,TmpSign % fill TmpSign with sign of Dst
%% subcc TmpSign,TmpHi,%g0
%% [bne OverflowLabel]
NewCond =
case Cond of
vs -> ne;
vc -> eq
end,
TmpHi = hipe_sparc:mk_new_temp('untagged'),
TmpSign = hipe_sparc:mk_new_temp('untagged'),
G0 = hipe_sparc:mk_g0(),
{I1, _DidCommute} = mk_alu('smul', Src1, Src2, Dst),
I1 ++
[hipe_sparc:mk_rdy(TmpHi),
hipe_sparc:mk_alu('sra', Dst, hipe_sparc:mk_uimm5(31), TmpSign) |
conv_alub2(G0, TmpSign, 'sub', NewCond, TmpHi, I)];
_ ->
conv_alub2(Dst, Src1, RtlAlubOp, Cond, Src2, I)
end,
{I2, Map2, Data}.
-ifdef(notdef). % XXX: only for sparc64, alas
conv_alub2(Dst, Src1, RtlAlubOp, Cond, Src2, I) ->
case conv_cond_rcond(Cond) of
[] ->
conv_alub_bp(Dst, Src1, RtlAlubOp, Cond, Src2, I);
RCond ->
conv_alub_br(Dst, Src1, RtlAlubOp, RCond, Src2, I)
end.
conv_alub_br(Dst, Src1, RtlAlubOp, RCond, Src2, I) ->
TrueLab = hipe_rtl:alub_true_label(I),
FalseLab = hipe_rtl:alub_false_label(I),
Pred = hipe_rtl:alub_pred(I),
%% "Dst = Src1 AluOp Src2; if COND" becomes
%% "Dst = Src1 AluOp Src2; if-COND(Dst)"
{I2, _DidCommute} = mk_alu(conv_alubop_nocc(RtlAlubOp), Src1, Src2, Dst),
I2 ++ mk_pseudo_br(RCond, Dst, TrueLab, FalseLab, Pred).
conv_cond_rcond(Cond) ->
case Cond of
'e' -> 'z';
'ne' -> 'nz';
'g' -> 'gz';
'ge' -> 'gez';
'l' -> 'lz';
'le' -> 'lez';
_ -> [] % vs, vc, gu, geu, lu, leu
end.
conv_alubop_nocc(RtlAlubOp) ->
case RtlAlubOp of
'add' -> 'add';
'sub' -> 'sub';
%% mul: handled elsewhere
'or' -> 'or';
'and' -> 'and';
'xor' -> 'xor'
%% no shift ops
end.
mk_pseudo_br(RCond, Dst, TrueLab, FalseLab, Pred) ->
[hipe_sparc:mk_pseudo_br(RCond, Dst, TrueLab, FalseLab, Pred)].
-else.
conv_alub2(Dst, Src1, RtlAlubOp, Cond, Src2, I) ->
conv_alub_bp(Dst, Src1, RtlAlubOp, Cond, Src2, I).
-endif.
conv_alub_bp(Dst, Src1, RtlAlubOp, Cond, Src2, I) ->
TrueLab = hipe_rtl:alub_true_label(I),
FalseLab = hipe_rtl:alub_false_label(I),
Pred = hipe_rtl:alub_pred(I),
%% "Dst = Src1 AluOp Src2; if COND" becomes
%% "Dst = Src1 AluOpCC Src22; if-COND(CC)"
{I2, _DidCommute} = mk_alu(conv_alubop_cc(RtlAlubOp), Src1, Src2, Dst),
I2 ++ mk_pseudo_bp(Cond, TrueLab, FalseLab, Pred).
conv_alubop_cc(RtlAlubOp) ->
case RtlAlubOp of
'add' -> 'addcc';
'sub' -> 'subcc';
%% mul: handled elsewhere
'or' -> 'orcc';
'and' -> 'andcc';
'xor' -> 'xorcc'
%% no shift ops
end.
conv_branch(I, Map, Data) ->
%% <unused> = src1 - src2; if COND goto label
{Src1, Map0} = conv_src(hipe_rtl:branch_src1(I), Map),
{Src2, Map1} = conv_src(hipe_rtl:branch_src2(I), Map0),
Cond = conv_cond(hipe_rtl:branch_cond(I)),
I2 = conv_branch2(Src1, Cond, Src2, I),
{I2, Map1, Data}.
-ifdef(notdef). % XXX: only for sparc64, alas
conv_branch2(Src1, Cond, Src2, I) ->
case conv_cond_rcond(Cond) of
[] ->
conv_branch_bp(Src1, Cond, Src2, I);
RCond ->
conv_branch_br(Src1, RCond, Src2, I)
end.
conv_branch_br(Src1, RCond, Src2, I) ->
TrueLab = hipe_rtl:branch_true_label(I),
FalseLab = hipe_rtl:branch_false_label(I),
Pred = hipe_rtl:branch_pred(I),
%% "if src1-COND-src2" becomes
%% "sub src1,src2,tmp; if-COND(tmp)"
Dst = hipe_sparc:mk_new_temp('untagged'),
XAluOp = 'cmp', % == a sub that commutes
{I1, DidCommute} = mk_alu(XAluOp, Src1, Src2, Dst),
NewRCond =
case DidCommute of
true -> commute_rcond(RCond);
false -> RCond
end,
I1 ++ mk_pseudo_br(NewRCond, Dst, TrueLab, FalseLab, Pred).
commute_rcond(RCond) -> % if x RCond y, then y commute_rcond(RCond) x
case RCond of
'z' -> 'z'; % ==, ==
'nz' -> 'nz'; % !=, !=
'gz' -> 'lz'; % >, <
'gez' -> 'lez'; % >=, <=
'lz' -> 'gz'; % <, >
'lez' -> 'gez' % <=, >=
end.
-else.
conv_branch2(Src1, Cond, Src2, I) ->
conv_branch_bp(Src1, Cond, Src2, I).
-endif.
conv_branch_bp(Src1, Cond, Src2, I) ->
TrueLab = hipe_rtl:branch_true_label(I),
FalseLab = hipe_rtl:branch_false_label(I),
Pred = hipe_rtl:branch_pred(I),
%% "if src1-COND-src2" becomes
%% "subcc src1,src2,%g0; if-COND(CC)"
Dst = hipe_sparc:mk_g0(),
XAluOp = 'cmpcc', % == a subcc that commutes
{I1, DidCommute} = mk_alu(XAluOp, Src1, Src2, Dst),
NewCond =
case DidCommute of
true -> commute_cond(Cond);
false -> Cond
end,
I1 ++ mk_pseudo_bp(NewCond, TrueLab, FalseLab, Pred).
conv_call(I, Map, Data) ->
{Args, Map0} = conv_src_list(hipe_rtl:call_arglist(I), Map),
{Dsts, Map1} = conv_dst_list(hipe_rtl:call_dstlist(I), Map0),
{Fun, Map2} = conv_fun(hipe_rtl:call_fun(I), Map1),
ContLab = hipe_rtl:call_continuation(I),
ExnLab = hipe_rtl:call_fail(I),
Linkage = hipe_rtl:call_type(I),
I2 = mk_call(Dsts, Fun, Args, ContLab, ExnLab, Linkage),
{I2, Map2, Data}.
mk_call(Dsts, Fun, Args, ContLab, ExnLab, Linkage) ->
case hipe_sparc:is_prim(Fun) of
true ->
mk_primop_call(Dsts, Fun, Args, ContLab, ExnLab, Linkage);
false ->
mk_general_call(Dsts, Fun, Args, ContLab, ExnLab, Linkage)
end.
mk_primop_call(Dsts, Prim, Args, ContLab, ExnLab, Linkage) ->
case hipe_sparc:prim_prim(Prim) of
%% no SPARC-specific primops defined yet
_ ->
mk_general_call(Dsts, Prim, Args, ContLab, ExnLab, Linkage)
end.
mk_general_call(Dsts, Fun, Args, ContLab, ExnLab, Linkage) ->
%% The backend does not support pseudo_calls without a
%% continuation label, so we make sure each call has one.
{RealContLab, Tail} =
case mk_call_results(Dsts) of
[] ->
%% Avoid consing up a dummy basic block if the moves list
%% is empty, as is typical for calls to suspend/0.
%% This should be subsumed by a general "optimise the CFG"
%% module, and could probably be removed.
case ContLab of
[] ->
NewContLab = hipe_gensym:get_next_label(sparc),
{NewContLab, [hipe_sparc:mk_label(NewContLab)]};
_ ->
{ContLab, []}
end;
Moves ->
%% Change the call to continue at a new basic block.
%% In this block move the result registers to the Dsts,
%% then continue at the call's original continuation.
NewContLab = hipe_gensym:get_next_label(sparc),
case ContLab of
[] ->
%% This is just a fallthrough
%% No jump back after the moves.
{NewContLab,
[hipe_sparc:mk_label(NewContLab) |
Moves]};
_ ->
%% The call has a continuation. Jump to it.
{NewContLab,
[hipe_sparc:mk_label(NewContLab) |
Moves ++
[hipe_sparc:mk_b_label(ContLab)]]}
end
end,
SDesc = hipe_sparc:mk_sdesc(ExnLab, 0, length(Args), {}),
CallInsn = hipe_sparc:mk_pseudo_call(Fun, SDesc, RealContLab, Linkage),
{RegArgs,StkArgs} = split_args(Args),
mk_push_args(StkArgs, move_actuals(RegArgs, [CallInsn | Tail])).
mk_call_results(Dsts) ->
case Dsts of
[] -> [];
[Dst] ->
RV = hipe_sparc:mk_rv(),
[hipe_sparc:mk_pseudo_move(RV, Dst)]
end.
mk_push_args(StkArgs, Tail) ->
case length(StkArgs) of
0 ->
Tail;
NrStkArgs ->
[hipe_sparc:mk_pseudo_call_prepare(NrStkArgs) |
mk_store_args(StkArgs, NrStkArgs * word_size(), Tail)]
end.
mk_store_args([Arg|Args], PrevOffset, Tail) ->
Offset = PrevOffset - word_size(),
{Src,FixSrc} =
case hipe_sparc:is_temp(Arg) of
true ->
{Arg, []};
_ ->
Tmp = new_tagged_temp(),
{Tmp, mk_set(Arg, Tmp)}
end,
%% XXX: sparc64: stx
Store = hipe_sparc:mk_store('stw', Src, hipe_sparc:mk_sp(), hipe_sparc:mk_simm13(Offset)),
mk_store_args(Args, Offset, FixSrc ++ [Store | Tail]);
mk_store_args([], _, Tail) ->
Tail.
conv_comment(I, Map, Data) ->
I2 = [hipe_sparc:mk_comment(hipe_rtl:comment_text(I))],
{I2, Map, Data}.
conv_enter(I, Map, Data) ->
{Args, Map0} = conv_src_list(hipe_rtl:enter_arglist(I), Map),
{Fun, Map1} = conv_fun(hipe_rtl:enter_fun(I), Map0),
I2 = mk_enter(Fun, Args, hipe_rtl:enter_type(I)),
{I2, Map1, Data}.
mk_enter(Fun, Args, Linkage) ->
Arity = length(Args),
{RegArgs,StkArgs} = split_args(Args),
move_actuals(RegArgs,
[hipe_sparc:mk_pseudo_tailcall_prepare(),
hipe_sparc:mk_pseudo_tailcall(Fun, Arity, StkArgs, Linkage)]).
conv_goto(I, Map, Data) ->
I2 = [hipe_sparc:mk_b_label(hipe_rtl:goto_label(I))],
{I2, Map, Data}.
conv_label(I, Map, Data) ->
I2 = [hipe_sparc:mk_label(hipe_rtl:label_name(I))],
{I2, Map, Data}.
conv_load(I, Map, Data) ->
{Dst, Map0} = conv_dst(hipe_rtl:load_dst(I), Map),
{Base1, Map1} = conv_src(hipe_rtl:load_src(I), Map0),
{Base2, Map2} = conv_src(hipe_rtl:load_offset(I), Map1),
LdOp = conv_ldop(hipe_rtl:load_size(I), hipe_rtl:load_sign(I)),
{I2, _DidCommute} = mk_alu(LdOp, Base1, Base2, Dst),
{I2, Map2, Data}.
conv_ldop(LoadSize, LoadSign) ->
case LoadSize of
word -> 'lduw'; % XXX: sparc64: ldx
int32 -> 'lduw'; % XXX: sparc64: lduw or ldsw
int16 ->
case LoadSign of
signed -> 'ldsh';
unsigned -> 'lduh'
end;
byte ->
case LoadSign of
signed -> 'ldsb';
unsigned -> 'ldub'
end
end.
conv_load_address(I, Map, Data) ->
{Dst, Map0} = conv_dst(hipe_rtl:load_address_dst(I), Map),
Addr = hipe_rtl:load_address_addr(I),
Type = hipe_rtl:load_address_type(I),
Src = {Addr,Type},
I2 = [hipe_sparc:mk_pseudo_set(Src, Dst)],
{I2, Map0, Data}.
conv_load_atom(I, Map, Data) ->
{Dst, Map0} = conv_dst(hipe_rtl:load_atom_dst(I), Map),
Src = hipe_rtl:load_atom_atom(I),
I2 = [hipe_sparc:mk_pseudo_set(Src, Dst)],
{I2, Map0, Data}.
conv_move(I, Map, Data) ->
{Dst, Map0} = conv_dst(hipe_rtl:move_dst(I), Map),
{Src, Map1} = conv_src(hipe_rtl:move_src(I), Map0),
I2 = mk_move(Src, Dst, []),
{I2, Map1, Data}.
mk_move(Src, Dst, Tail) ->
case hipe_sparc:is_temp(Src) of
true -> [hipe_sparc:mk_pseudo_move(Src, Dst) | Tail];
_ -> mk_set(Src, Dst, Tail)
end.
conv_return(I, Map, Data) ->
%% TODO: multiple-value returns
{[Arg], Map0} = conv_src_list(hipe_rtl:return_varlist(I), Map),
I2 = mk_move(Arg, hipe_sparc:mk_rv(), [hipe_sparc:mk_pseudo_ret()]),
{I2, Map0, Data}.
conv_store(I, Map, Data) ->
{Base1, Map0} = conv_dst(hipe_rtl:store_base(I), Map), % no immediates allowed
{Src, Map1} = conv_src(hipe_rtl:store_src(I), Map0),
{Base2, Map2} = conv_src(hipe_rtl:store_offset(I), Map1),
StOp = conv_stop(hipe_rtl:store_size(I)),
I2 = mk_store(StOp, Src, Base1, Base2),
{I2, Map2, Data}.
conv_stop(StoreSize) ->
case StoreSize of
word -> 'stw'; % XXX: sparc64: stx
int32 -> 'stw';
byte -> 'stb'
end.
mk_store(StOp, Src, Base1, Base2) ->
case hipe_sparc:is_temp(Src) of
true ->
mk_store2(StOp, Src, Base1, Base2);
_ ->
Tmp = new_untagged_temp(),
mk_set(Src, Tmp, mk_store2(StOp, Tmp, Base1, Base2))
end.
mk_store2(StOp, Src, Base1, Base2) ->
case hipe_sparc:is_temp(Base2) of
true ->
mk_store_rr(StOp, Src, Base1, Base2);
_ ->
mk_store_ri(StOp, Src, Base1, Base2)
end.
mk_store_ri(StOp, Src, Base, Disp) ->
hipe_sparc:mk_store(StOp, Src, Base, Disp, 'new', []).
mk_store_rr(StOp, Src, Base1, Base2) ->
[hipe_sparc:mk_store(StOp, Src, Base1, Base2)].
conv_switch(I, Map, Data) ->
Labels = hipe_rtl:switch_labels(I),
LMap = [{label,L} || L <- Labels],
{NewData, JTabLab} =
case hipe_rtl:switch_sort_order(I) of
[] ->
hipe_consttab:insert_block(Data, word, LMap);
SortOrder ->
hipe_consttab:insert_sorted_block(Data, word, LMap, SortOrder)
end,
%% no immediates allowed here
{IndexR, Map1} = conv_dst(hipe_rtl:switch_src(I), Map),
JTabR = new_untagged_temp(),
OffsetR = new_untagged_temp(),
DestR = new_untagged_temp(),
I2 =
[hipe_sparc:mk_pseudo_set({JTabLab,constant}, JTabR),
%% XXX: sparc64: << 3
hipe_sparc:mk_alu('sll', IndexR, hipe_sparc:mk_uimm5(2), OffsetR),
%% XXX: sparc64: ldx
hipe_sparc:mk_alu('lduw', JTabR, OffsetR, DestR),
hipe_sparc:mk_jmp(DestR, hipe_sparc:mk_simm13(0), Labels)],
{I2, Map1, NewData}.
%%% Create a conditional branch.
mk_pseudo_bp(Cond, TrueLabel, FalseLabel, Pred) ->
[hipe_sparc:mk_pseudo_bp(Cond, TrueLabel, FalseLabel, Pred)].
%%% Load an integer constant into a register.
mk_set(Value, Dst) -> mk_set(Value, Dst, []).
mk_set(Value, Dst, Tail) ->
hipe_sparc:mk_set(Value, Dst, Tail).
%%% Convert an RTL ALU op.
conv_aluop(RtlAluOp) ->
case RtlAluOp of
'add' -> 'add';
'sub' -> 'sub';
'mul' -> 'mulx';
'or' -> 'or';
'and' -> 'and';
'xor' -> 'xor';
'sll' -> 'sll'; % XXX: sparc64: sllx
'srl' -> 'srl'; % XXX: sparc64: srlx
'sra' -> 'sra' % XXX: sparc64: srax
end.
%%% Check if an extended SPARC AluOp commutes.
xaluop_commutes(XAluOp) ->
case XAluOp of
%% 'cmp' -> true;
'cmpcc' -> true;
'add' -> true;
'addcc' -> true;
'and' -> true;
'andcc' -> true;
'or' -> true;
'orcc' -> true;
'xor' -> true;
'xorcc' -> true;
'sub' -> false;
'subcc' -> false;
'mulx' -> true;
'smul' -> true;
'sll' -> false;
'srl' -> false;
'sra' -> false;
%% 'sllx' -> false;
%% 'srlx' -> false;
%% 'srax' -> false;
'ldsb' -> true;
'ldsh' -> true;
%% 'ldsw' -> true;
'ldub' -> true;
'lduh' -> true;
'lduw' -> true
%% 'ldx' -> true
end.
%%% Check if an extended SPARC AluOp is a shift.
xaluop_is_shift(XAluOp) ->
case XAluOp of
'sll' -> true;
'srl' -> true;
'sra' -> true;
'sllx' -> true;
'srlx' -> true;
'srax' -> true;
_ -> false
end.
%%% Convert an extended SPARC AluOp back to a plain AluOp.
%%% This just maps cmp{,cc} to sub{,cc}.
xaluop_normalise(XAluOp) ->
case XAluOp of
'cmp' -> 'sub';
'cmpcc' -> 'subcc';
_ -> XAluOp
end.
%%% Convert an RTL condition code.
conv_cond(RtlCond) ->
case RtlCond of
eq -> 'e';
ne -> 'ne';
gt -> 'g';
gtu -> 'gu'; % >u
ge -> 'ge';
geu -> 'geu'; % >=u
lt -> 'l';
ltu -> 'lu'; % <u
le -> 'le';
leu -> 'leu'; % <=u
overflow -> 'vs';
not_overflow -> 'vc'
end.
%%% Commute a SPARC condition code.
commute_cond(Cond) -> % if x Cond y, then y commute_cond(Cond) x
case Cond of
'e' -> 'e'; % ==, ==
'ne' -> 'ne'; % !=, !=
'g' -> 'l'; % >, <
'ge' -> 'le'; % >=, <=
'l' -> 'g'; % <, >
'le' -> 'ge'; % <=, >=
'gu' -> 'lu'; % >u, <u
'geu' -> 'leu'; % >=u, <=u
'lu' -> 'gu'; % <u, >u
'leu' -> 'geu' % <=u, >=u
%% vs/vc: n/a
end.
%%% Split a list of formal or actual parameters into the
%%% part passed in registers and the part passed on the stack.
%%% The parameters passed in registers are also tagged with
%%% the corresponding registers.
split_args(Args) ->
split_args(0, hipe_sparc_registers:nr_args(), Args, []).
split_args(I, N, [Arg|Args], RegArgs) when I < N ->
Reg = hipe_sparc_registers:arg(I),
Temp = hipe_sparc:mk_temp(Reg, 'tagged'),
split_args(I+1, N, Args, [{Arg,Temp}|RegArgs]);
split_args(_, _, StkArgs, RegArgs) ->
{RegArgs, StkArgs}.
%%% Convert a list of actual parameters passed in
%%% registers (from split_args/1) to a list of moves.
move_actuals([{Src,Dst}|Actuals], Rest) ->
move_actuals(Actuals, mk_move(Src, Dst, Rest));
move_actuals([], Rest) ->
Rest.
%%% Convert a list of formal parameters passed in
%%% registers (from split_args/1) to a list of moves.
move_formals([{Dst,Src}|Formals], Rest) ->
move_formals(Formals, [hipe_sparc:mk_pseudo_move(Src, Dst) | Rest]);
move_formals([], Rest) ->
Rest.
%%% Convert a 'fun' operand (MFA, prim, or temp)
conv_fun(Fun, Map) ->
case hipe_rtl:is_var(Fun) of
true ->
conv_dst(Fun, Map);
false ->
case hipe_rtl:is_reg(Fun) of
true ->
conv_dst(Fun, Map);
false ->
if is_atom(Fun) ->
{hipe_sparc:mk_prim(Fun), Map};
true ->
{conv_mfa(Fun), Map}
end
end
end.
%%% Convert an MFA operand.
conv_mfa({M,F,A}) when is_atom(M), is_atom(F), is_integer(A) ->
hipe_sparc:mk_mfa(M, F, A).
%%% Convert an RTL source operand (imm/var/reg).
%%% Returns a temp or a naked integer.
conv_src(Opnd, Map) ->
case hipe_rtl:is_imm(Opnd) of
true ->
Value = hipe_rtl:imm_value(Opnd),
if is_integer(Value) ->
{Value, Map}
end;
false ->
conv_dst(Opnd, Map)
end.
conv_src_list([O|Os], Map) ->
{V, Map1} = conv_src(O, Map),
{Vs, Map2} = conv_src_list(Os, Map1),
{[V|Vs], Map2};
conv_src_list([], Map) ->
{[], Map}.
%%% Convert an RTL destination operand (var/reg).
conv_fpreg(Opnd, Map) ->
true = hipe_rtl:is_fpreg(Opnd),
conv_dst(Opnd, Map).
conv_dst(Opnd, Map) ->
{Name, Type} =
case hipe_rtl:is_var(Opnd) of
true ->
{hipe_rtl:var_index(Opnd), 'tagged'};
false ->
case hipe_rtl:is_fpreg(Opnd) of
true ->
{hipe_rtl:fpreg_index(Opnd), 'double'};
false ->
{hipe_rtl:reg_index(Opnd), 'untagged'}
end
end,
IsPrecoloured =
case Type of
'double' -> false; %hipe_sparc_registers:is_precoloured_fpr(Name);
_ -> hipe_sparc_registers:is_precoloured_gpr(Name)
end,
case IsPrecoloured of
true ->
{hipe_sparc:mk_temp(Name, Type), Map};
false ->
case vmap_lookup(Map, Opnd) of
{value, NewTemp} ->
{NewTemp, Map};
_ ->
NewTemp = hipe_sparc:mk_new_temp(Type),
{NewTemp, vmap_bind(Map, Opnd, NewTemp)}
end
end.
conv_dst_list([O|Os], Map) ->
{Dst, Map1} = conv_dst(O, Map),
{Dsts, Map2} = conv_dst_list(Os, Map1),
{[Dst|Dsts], Map2};
conv_dst_list([], Map) ->
{[], Map}.
conv_formals(Os, Map) ->
conv_formals(hipe_sparc_registers:nr_args(), Os, Map, []).
conv_formals(N, [O|Os], Map, Res) ->
Type =
case hipe_rtl:is_var(O) of
true -> 'tagged';
_ -> 'untagged'
end,
Dst =
if N > 0 -> hipe_sparc:mk_new_temp(Type); % allocatable
true -> hipe_sparc:mk_new_nonallocatable_temp(Type)
end,
Map1 = vmap_bind(Map, O, Dst),
conv_formals(N-1, Os, Map1, [Dst|Res]);
conv_formals(_, [], Map, Res) ->
{lists:reverse(Res), Map}.
%%% new_untagged_temp -- conjure up an untagged scratch reg
new_untagged_temp() ->
hipe_sparc:mk_new_temp('untagged').
%%% new_tagged_temp -- conjure up a tagged scratch reg
new_tagged_temp() ->
hipe_sparc:mk_new_temp('tagged').
%%% Map from RTL var/reg operands to temps.
vmap_empty() ->
gb_trees:empty().
vmap_lookup(Map, Key) ->
gb_trees:lookup(Key, Map).
vmap_bind(Map, Key, Val) ->
gb_trees:insert(Key, Val, Map).
word_size() ->
hipe_rtl_arch:word_size().
