diff options
Diffstat (limited to 'lib/hipe')
| -rw-r--r-- | lib/hipe/rtl/Makefile | 2 | ||||
| -rw-r--r-- | lib/hipe/rtl/hipe_rtl_arith.inc | 55 | ||||
| -rw-r--r-- | lib/hipe/rtl/hipe_rtl_lcm.erl | 19 | ||||
| -rw-r--r-- | lib/hipe/rtl/hipe_rtl_ssapre.erl | 460 |
4 files changed, 268 insertions, 268 deletions
diff --git a/lib/hipe/rtl/Makefile b/lib/hipe/rtl/Makefile index e0ff225a25..b4cdf8b1f2 100644 --- a/lib/hipe/rtl/Makefile +++ b/lib/hipe/rtl/Makefile @@ -75,7 +75,7 @@ TARGET_FILES= $(MODULES:%=$(EBIN)/%.$(EMULATOR)) include ../native.mk -ERL_COMPILE_FLAGS += -Werror +inline +warn_unused_import +warn_exported_vars +ERL_COMPILE_FLAGS += -Werror +inline +warn_unused_import +warn_export_vars # ---------------------------------------------------- # Targets diff --git a/lib/hipe/rtl/hipe_rtl_arith.inc b/lib/hipe/rtl/hipe_rtl_arith.inc index 645bc83f9f..0c396c8e76 100644 --- a/lib/hipe/rtl/hipe_rtl_arith.inc +++ b/lib/hipe/rtl/hipe_rtl_arith.inc @@ -47,73 +47,80 @@ eval_alu(Op, Arg1, Arg2) Res = (Arg1 - Arg2) band ?WORDMASK, N = sign_bit(Res), Z = zero(Res), - V = (Sign1 and (not Sign2) and (not N)) + V = (Sign1 andalso (not Sign2) andalso (not N)) or - ((not Sign1) and Sign2 and N), - C = ((not Sign1) and Sign2) + ((not Sign1) andalso Sign2 andalso N), + C = ((not Sign1) andalso Sign2) or - (N and ((not Sign1) or Sign2)); + (N andalso ((not Sign1) orelse Sign2)), + {Res, N, Z, V, C}; 'add' -> Res = (Arg1 + Arg2) band ?WORDMASK, N = sign_bit(Res), Z = zero(Res), - V = (Sign1 and Sign2 and (not N)) + V = (Sign1 andalso Sign2 andalso (not N)) or - ((not Sign1) and (not Sign2) and N), - C = (Sign1 and Sign2) + ((not Sign1) andalso (not Sign2) andalso N), + C = (Sign1 andalso Sign2) or - ((not N) and (Sign1 or Sign2)); + ((not N) andalso (Sign1 orelse Sign2)), + {Res, N, Z, V, C}; 'mul' -> FullRes = Arg1 * Arg2, Res = FullRes band ?WORDMASK, ResHi = FullRes bsr ?BITS, N = sign_bit(Res), Z = zero(Res), - V = (N and (ResHi =/= -1)) or ((not N) and (ResHi =/= 0)), - C = V; + V = (N andalso (ResHi =/= -1)) orelse ((not N) andalso (ResHi =/= 0)), + C = V, + {Res, N, Z, V, C}; 'sra' -> Res = (Arg1 bsr Arg2) band ?WORDMASK, N = sign_bit(Res), Z = zero(Res), V = 0, - C = 0; + C = 0, + {Res, N, Z, V, C}; 'srl' -> Res = (Arg1 bsr Arg2) band shiftmask(Arg2), N = sign_bit(Res), Z = zero(Res), V = 0, - C = 0; + C = 0, + {Res, N, Z, V, C}; 'sll' -> Res = (Arg1 bsl Arg2) band ?WORDMASK, N = sign_bit(Res), Z = zero(Res), V = 0, - C = 0; + C = 0, + {Res, N, Z, V, C}; 'or' -> Res = (Arg1 bor Arg2) band ?WORDMASK, N = sign_bit(Res), Z = zero(Res), V = 0, - C = 0; + C = 0, + {Res, N, Z, V, C}; 'and' -> Res = (Arg1 band Arg2) band ?WORDMASK, N = sign_bit(Res), Z = zero(Res), V = 0, - C = 0; + C = 0, + {Res, N, Z, V, C}; 'xor' -> Res = (Arg1 bxor Arg2) band ?WORDMASK, N = sign_bit(Res), Z = zero(Res), V = 0, - C = 0; + C = 0, + {Res, N, Z, V, C}; Op -> - Res = N = Z = V = C = 0, ?EXIT({"unknown alu op", Op}) - end, - {Res, N, Z, V, C}; + end; eval_alu(Op, Arg1, Arg2) -> - ?EXIT({argument_overflow,Op,Arg1,Arg2}). + ?EXIT({argument_overflow, Op, Arg1, Arg2}). %% Björn & Bjarni: %% We need to be able to do evaluations based only on the bits, since @@ -130,9 +137,9 @@ eval_cond_bits(Cond, N, Z, V, C) -> 'ne' -> not Z; 'gt' -> - not (Z or (N xor V)); + not (Z orelse (N xor V)); 'gtu' -> - not (C or Z); + not (C orelse Z); 'ge' -> not (N xor V); 'geu'-> @@ -142,9 +149,9 @@ eval_cond_bits(Cond, N, Z, V, C) -> 'ltu'-> C; 'le' -> - Z or (N xor V); + Z orelse (N xor V); 'leu'-> - C or Z; + C orelse Z; 'overflow' -> V; 'not_overflow' -> diff --git a/lib/hipe/rtl/hipe_rtl_lcm.erl b/lib/hipe/rtl/hipe_rtl_lcm.erl index 5d5668434e..71bd06c0df 100644 --- a/lib/hipe/rtl/hipe_rtl_lcm.erl +++ b/lib/hipe/rtl/hipe_rtl_lcm.erl @@ -941,15 +941,16 @@ calc_insert_edge(NodeInfo, EdgeInfo, From, To) -> calc_delete(_, NodeInfo, []) -> NodeInfo; calc_delete(CFG, NodeInfo, [Label|Labels]) -> - case Label =:= hipe_rtl_cfg:start_label(CFG) of - true -> - NewNodeInfo = set_delete(NodeInfo, Label, ?SETS:new()); - false -> - UpExp = up_exp(NodeInfo, Label), - LaterIn = later_in(NodeInfo, Label), - Delete = ?SETS:subtract(UpExp, LaterIn), - NewNodeInfo = set_delete(NodeInfo, Label, Delete) - end, + NewNodeInfo = + case Label =:= hipe_rtl_cfg:start_label(CFG) of + true -> + set_delete(NodeInfo, Label, ?SETS:new()); + false -> + UpExp = up_exp(NodeInfo, Label), + LaterIn = later_in(NodeInfo, Label), + Delete = ?SETS:subtract(UpExp, LaterIn), + set_delete(NodeInfo, Label, Delete) + end, calc_delete(CFG, NewNodeInfo, Labels). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% diff --git a/lib/hipe/rtl/hipe_rtl_ssapre.erl b/lib/hipe/rtl/hipe_rtl_ssapre.erl index e71617e2e9..df1a4b9376 100644 --- a/lib/hipe/rtl/hipe_rtl_ssapre.erl +++ b/lib/hipe/rtl/hipe_rtl_ssapre.erl @@ -221,22 +221,21 @@ find_definition_for_computations_in_block(BlockLabel,[Inst|Rest],Cfg, ?pp_debug(" Inserting Xsi: ",[]),pp_xsi(Xsi), Label = Xsi#xsi.label, - case BlockLabel =:= Label of - false -> - %% Insert the Xsi in the appropriate block - Code = hipe_bb:code(?CFG:bb(Cfg,Label)), - {BeforeCode,AfterCode} = split_for_xsi(lists:reverse(Code),[]), - NewCode = BeforeCode++[XsiLink|AfterCode], - NewBB = hipe_bb:mk_bb(NewCode), - NewCfg = ?CFG:bb_add(Cfg,Label,NewBB), - NewVisited = [NewInst|VisitedInstructions]; - _-> - {BeforeCode,AfterCode} = split_for_xsi(VisitedInstructions,[]), - TempVisited = BeforeCode++[XsiLink|AfterCode], - TempVisited2 = lists:reverse(TempVisited), - NewVisited = [NewInst|TempVisited2], - NewCfg = Cfg - end, + {NewCfg, NewVisited} = + case BlockLabel =:= Label of + false -> + %% Insert the Xsi in the appropriate block + Code = hipe_bb:code(?CFG:bb(Cfg,Label)), + {BeforeCode,AfterCode} = split_for_xsi(lists:reverse(Code),[]), + NewCode = BeforeCode++[XsiLink|AfterCode], + NewBB = hipe_bb:mk_bb(NewCode), + {?CFG:bb_add(Cfg,Label,NewBB), [NewInst|VisitedInstructions]}; + _-> + {BeforeCode,AfterCode} = split_for_xsi(VisitedInstructions,[]), + TempVisited = BeforeCode++[XsiLink|AfterCode], + TempVisited2 = lists:reverse(TempVisited), + {Cfg, [NewInst|TempVisited2]} + end, find_definition_for_computations_in_block(BlockLabel, Rest, NewCfg, NewVisited, XsiGraph) end; @@ -787,14 +786,15 @@ create_cfggraph([Label|Ls],Cfg,CFGGraph,ToBeFactorizedAcc,MPAcc,LateEdges,XsiGra Defs = get_defs_in_non_merge_block(Code, []), ?pp_debug("~nAdding a vertex for ~w", [Label]), Succs = ?CFG:succ(Cfg, Label), - case Succs of - [] -> %% Exit point - ?GRAPH:add_vertex(CFGGraph, Label, #block{type = exit}), - NewToBeFactorizedAcc = ToBeFactorizedAcc; - _ -> %% Split point - ?GRAPH:add_vertex(CFGGraph,Label,#block{type=not_mp,attributes={P,Succs}}), - NewToBeFactorizedAcc = [Label|ToBeFactorizedAcc] - end, + NewToBeFactorizedAcc = + case Succs of + [] -> %% Exit point + ?GRAPH:add_vertex(CFGGraph, Label, #block{type = exit}), + ToBeFactorizedAcc; + _ -> %% Split point + ?GRAPH:add_vertex(CFGGraph,Label,#block{type=not_mp,attributes={P,Succs}}), + [Label|ToBeFactorizedAcc] + end, ?pp_debug("~nAdding an edge ~w -> ~w (~w)",[P,Label,Defs]), case ?GRAPH:add_edge(CFGGraph,P,Label,Defs) of {error,Reason} -> @@ -862,56 +862,53 @@ add_edges_for_mp([P|Ps], Label, LateEdges) -> %% Doesn't do anything so far add_map_and_uses([], _Key, Maps, Uses) -> - {Maps,Uses}; + {Maps, Uses}; add_map_and_uses([XsiOp|Ops], Key, Maps, Uses) -> - case XsiOp#xsi_op.op of - #bottom{} -> - Set = case gb_trees:lookup(XsiOp,Maps) of - {value, V} -> - ?SETS:add_element(Key,V); - none -> - ?SETS:from_list([Key]) - end, - NewMaps = gb_trees:enter(XsiOp,Set,Maps), - NewUses = Uses; - #temp{} -> - Set = case gb_trees:lookup(XsiOp,Maps) of - {value, V} -> - ?SETS:add_element(Key,V); - none -> - ?SETS:from_list([Key]) - end, - NewMaps = gb_trees:enter(XsiOp,Set,Maps), - Pred = XsiOp#xsi_op.pred, - OOP = XsiOp#xsi_op.op, - SSet = case gb_trees:lookup(Pred,Uses) of - {value, VV} -> - ?SETS:add_element(OOP#temp.key,VV); - none -> - ?SETS:from_list([OOP#temp.key]) - end, - NewUses = gb_trees:enter(Pred,SSet,Uses); - #eop{} -> - Set = case gb_trees:lookup(XsiOp,Maps) of - {value, V} -> - ?SETS:add_element(Key,V); - none -> - ?SETS:from_list([Key]) - end, - NewMaps = gb_trees:enter(XsiOp,Set,Maps), - Pred = XsiOp#xsi_op.pred, - Op = XsiOp#xsi_op.op, - SSet = case gb_trees:lookup(Pred,Uses) of - {value, VV} -> - ?SETS:add_element(Op#eop.stopped_by,VV); - none -> - ?SETS:from_list([Op#eop.stopped_by]) - end, - NewUses = gb_trees:enter(Pred,SSet,Uses); - _-> - NewMaps = Maps, - NewUses = Uses - end, + {NewMaps, NewUses} = + case XsiOp#xsi_op.op of + #bottom{} -> + Set = case gb_trees:lookup(XsiOp, Maps) of + {value, V} -> + ?SETS:add_element(Key, V); + none -> + ?SETS:from_list([Key]) + end, + {gb_trees:enter(XsiOp, Set, Maps), Uses}; + #temp{} -> + Set = case gb_trees:lookup(XsiOp, Maps) of + {value, V} -> + ?SETS:add_element(Key, V); + none -> + ?SETS:from_list([Key]) + end, + Pred = XsiOp#xsi_op.pred, + OOP = XsiOp#xsi_op.op, + SSet = case gb_trees:lookup(Pred, Uses) of + {value, VV} -> + ?SETS:add_element(OOP#temp.key, VV); + none -> + ?SETS:from_list([OOP#temp.key]) + end, + {gb_trees:enter(XsiOp, Set, Maps), gb_trees:enter(Pred, SSet, Uses)}; + #eop{} -> + Set = case gb_trees:lookup(XsiOp, Maps) of + {value, V} -> + ?SETS:add_element(Key, V); + none -> + ?SETS:from_list([Key]) + end, + Pred = XsiOp#xsi_op.pred, + Op = XsiOp#xsi_op.op, + SSet = case gb_trees:lookup(Pred, Uses) of + {value, VV} -> + ?SETS:add_element(Op#eop.stopped_by, VV); + none -> + ?SETS:from_list([Op#eop.stopped_by]) + end, + {gb_trees:enter(XsiOp, Set, Maps), gb_trees:enter(Pred, SSet, Uses)}; + _-> + {Maps, Uses} + end, add_map_and_uses(Ops, Key, NewMaps, NewUses). post_process([], _CFGGraph) -> ok; @@ -1162,37 +1159,38 @@ code_motion_in_block(L,[Inst|Insts],Cfg,XsiG,Visited,InsertionsAcc) -> #pre_candidate{} -> Def = Inst#pre_candidate.def, Alu = Inst#pre_candidate.alu, - case Def of - bottom -> - InstToAdd = Alu; - #temp{} -> - Key = Def#temp.key, - {_V,Xsi} = ?GRAPH:vertex(XsiG,Key), - case Xsi#xsi.wba of - true -> - %% Turn into a move - Dst = ?RTL:alu_dst(Alu), - Move = ?RTL:mk_move(Dst,Def#temp.var), - pp_instr(Inst#pre_candidate.alu,nil), ?pp_debug(" ==> ",[]), pp_instr(Move,nil), - %% Counting redundancies - redundancy_add(), - InstToAdd = Move; - _ -> - InstToAdd = Alu - end; - _ -> %% Def is a real variable - %% Turn into a move - Dst = ?RTL:alu_dst(Alu), - Move = ?RTL:mk_move(Dst,Def), - pp_instr(Alu,nil), ?pp_debug(" ==> ",[]), pp_instr(Move,nil), - %% Counting redundancies - redundancy_add(), - InstToAdd = Move - end, + InstToAdd = + case Def of + bottom -> + Alu; + #temp{} -> + Key = Def#temp.key, + {_V,Xsi} = ?GRAPH:vertex(XsiG,Key), + case Xsi#xsi.wba of + true -> + %% Turn into a move + Dst = ?RTL:alu_dst(Alu), + Move = ?RTL:mk_move(Dst,Def#temp.var), + pp_instr(Inst#pre_candidate.alu,nil), ?pp_debug(" ==> ",[]), pp_instr(Move,nil), + %% Counting redundancies + redundancy_add(), + Move; + _ -> + Alu + end; + _ -> %% Def is a real variable + %% Turn into a move + Dst = ?RTL:alu_dst(Alu), + Move = ?RTL:mk_move(Dst,Def), + pp_instr(Alu,nil), ?pp_debug(" ==> ",[]), pp_instr(Move,nil), + %% Counting redundancies + redundancy_add(), + Move + end, code_motion_in_block(L,Insts,Cfg,XsiG,[InstToAdd|Visited],InsertionsAcc); #xsi_link{} -> Key = Inst#xsi_link.num, - {_V,Xsi} = ?GRAPH:vertex(XsiG,Key), + {_V,Xsi} = ?GRAPH:vertex(XsiG,Key), case Xsi#xsi.wba of true -> %% Xsi is a WBA, it might trigger insertions @@ -1235,139 +1233,133 @@ get_insertions([],OpAcc,InsertionsAcc,_Visited,_Expr,_XsiG) -> get_insertions([XsiOp|Ops],OpAcc,InsertionsAcc,Visited,Expr,XsiG) -> Pred = XsiOp#xsi_op.pred, Op = XsiOp#xsi_op.op, - case Op of - #bottom{} -> - case gb_trees:lookup(Pred,InsertionsAcc) of - {value,Insertion} -> - From = Insertion#insertion.from, - case lists:keyfind(Op, 1, From) of - false -> - ?pp_debug("~nThere has been insertions along the edge L~w already, but not for that operand | Op=",[Pred]),pp_arg(Op), - Dst = Op#bottom.var, - Expr2 = ?RTL:alu_dst_update(Expr,Dst), - Inst = manufacture_computation(Pred,Expr2,Visited), - Code = Insertion#insertion.code, - NewInsertion = Insertion#insertion{from=[{Op,Dst}|From],code=[Inst|Code]}, - NewInsertionsAcc = gb_trees:update(Pred,NewInsertion,InsertionsAcc); - {_, Val} -> - ?pp_debug("~nThere has been insertions along the edge L~w already, and for that operand too | Op=",[Pred]),pp_arg(Op), - Dst = Val, - NewInsertionsAcc = InsertionsAcc - end; - none -> - ?pp_debug("~nThere has been no insertion along the edge L~w, (and not for that operand, of course)| Op=",[Pred]),pp_arg(Op), - Dst = Op#bottom.var, - Expr2 = ?RTL:alu_dst_update(Expr,Dst), - Inst = manufacture_computation(Pred,Expr2,Visited), - NewInsertion = #insertion{from=[{Op,Dst}],code=[Inst]}, - NewInsertionsAcc = gb_trees:insert(Pred,NewInsertion,InsertionsAcc) - end; - #const_expr{} -> - case gb_trees:lookup(Pred,InsertionsAcc) of - {value,Insertion} -> - From = Insertion#insertion.from, - case lists:keyfind(Op, 1, From) of - false -> - ?pp_debug("~nThere have been insertions along the edge L~w already, but not for that operand | Op=",[Pred]),pp_arg(Op), - Dst = Op#const_expr.var, - Val = Op#const_expr.value, - Inst = ?RTL:mk_move(Dst,Val), - Code = Insertion#insertion.code, - NewInsertion = Insertion#insertion{from=[{Op,Dst}|From],code=[Inst|Code]}, - NewInsertionsAcc = gb_trees:update(Pred,NewInsertion,InsertionsAcc); - {_, Val} -> - ?pp_debug("~nThere have been insertions along the edge L~w already, and for that operand too | Op=",[Pred]),pp_arg(Op), - Dst = Val, - NewInsertionsAcc = InsertionsAcc - end; - none -> - ?pp_debug("~nThere has been no insertion along the edge L~w, (and not for that operand, of course)| Op=",[Pred]),pp_arg(Op), - Dst = Op#const_expr.var, - Val = Op#const_expr.value, - Inst = ?RTL:mk_move(Dst,Val), - NewInsertion = #insertion{from=[{Op,Dst}],code=[Inst]}, - NewInsertionsAcc = gb_trees:insert(Pred,NewInsertion,InsertionsAcc) - end; - #eop{} -> - %% We treat expressions like bottoms - %% The value must be recomputed, and therefore not available... - case gb_trees:lookup(Pred,InsertionsAcc) of - {value,Insertion} -> - From = Insertion#insertion.from, - case lists:keyfind(Op, 1, From) of - false -> - ?pp_debug("~nThere has been insertions along the edge L~w already, but not for that operand | Op=",[Pred]),pp_arg(Op), - Dst = Op#eop.var, - Expr2 = ?RTL:alu_dst_update(Expr,Dst), - Inst = manufacture_computation(Pred,Expr2,Visited), - Code = Insertion#insertion.code, - NewInsertion = Insertion#insertion{from=[{Op,Dst}|From],code=[Inst|Code]}, - NewInsertionsAcc = gb_trees:update(Pred,NewInsertion,InsertionsAcc); - {_, Val} -> - ?pp_debug("~nThere has been insertions along the edge L~w already, and for that operand too | Op=",[Pred]),pp_arg(Op), - Dst = Val, - NewInsertionsAcc = InsertionsAcc - end; - none -> - ?pp_debug("~nThere has been no insertion along the edge L~w, (and not for that operand, of course)| Op=",[Pred]),pp_arg(Op), - Dst = Op#eop.var, - Expr2 = ?RTL:alu_dst_update(Expr,Dst), - Inst = manufacture_computation(Pred,Expr2,Visited), - NewInsertion = #insertion{from=[{Op,Dst}],code=[Inst]}, - NewInsertionsAcc = gb_trees:insert(Pred,NewInsertion,InsertionsAcc) - end; - #temp{} -> - case gb_trees:lookup(Pred,InsertionsAcc) of - {value,Insertion} -> - From = Insertion#insertion.from, - case lists:keyfind(Op, 1, From) of - false -> - ?pp_debug("~nThere has been insertions along the edge L~w already, but not for that operand | Op=",[Pred]),pp_arg(Op), - Key = Op#temp.key, - {_V,Xsi} = ?GRAPH:vertex(XsiG,Key), - case Xsi#xsi.wba of - true -> - ?pp_debug("~nBut the operand is a WBA Xsi: no need for insertion",[]), - Dst = Op#temp.var, - NewInsertionsAcc = InsertionsAcc; - _ -> - ?pp_debug("~nBut the operand is a NOT WBA Xsi: we must make an insertion",[]), - Dst = ?RTL:mk_new_var(), - Expr2 = ?RTL:alu_dst_update(Expr,Dst), - Inst = manufacture_computation(Pred,Expr2,Visited), - Code = Insertion#insertion.code, - NewInsertion = Insertion#insertion{from=[{Op,Dst}|From],code=[Inst|Code]}, - NewInsertionsAcc = gb_trees:update(Pred,NewInsertion,InsertionsAcc) - end; - {_, Val} -> - ?pp_debug("~nThere has been insertions along the edge L~w already, and for that operand too (Op=~w)",[Pred,Op]), - ?pp_debug("~nThis means, this temp is a WBA Xsi's definition",[]), - Dst = Val, - NewInsertionsAcc = InsertionsAcc - end; - none -> - ?pp_debug("~nThere has been no insertion along the edge L~w, (and not for that operand, of course | Op=",[Pred]),pp_arg(Op), - Key = Op#temp.key, - {_V,Xsi} = ?GRAPH:vertex(XsiG,Key), - case Xsi#xsi.wba of - true -> - ?pp_debug("~nBut the operand is a WBA Xsi: no need for insertion",[]), - Dst = Op#temp.var, - NewInsertionsAcc = InsertionsAcc; - _ -> - ?pp_debug("~nBut the operand is a NOT WBA Xsi: we must make an insertion",[]), - Dst = ?RTL:mk_new_var(), - Expr2 = ?RTL:alu_dst_update(Expr,Dst), - Inst = manufacture_computation(Pred,Expr2,Visited), - NewInsertion = #insertion{from=[{Op,Dst}],code=[Inst]}, - NewInsertionsAcc = gb_trees:insert(Pred,NewInsertion,InsertionsAcc) - end - end; - _ -> - ?pp_debug("~nThe operand (Op=",[]),pp_arg(Op),?pp_debug(") is a real variable, no need for insertion along L~w",[Pred]), - Dst = Op, - NewInsertionsAcc = InsertionsAcc - end, + {Dst, NewInsertionsAcc} = + case Op of + #bottom{} -> + case gb_trees:lookup(Pred,InsertionsAcc) of + {value,Insertion} -> + From = Insertion#insertion.from, + case lists:keyfind(Op, 1, From) of + false -> + ?pp_debug("~nThere has been insertions along the edge L~w already, but not for that operand | Op=",[Pred]),pp_arg(Op), + D = Op#bottom.var, + Expr2 = ?RTL:alu_dst_update(Expr,D), + Inst = manufacture_computation(Pred,Expr2,Visited), + Code = Insertion#insertion.code, + NewInsertion = Insertion#insertion{from=[{Op,D}|From],code=[Inst|Code]}, + {D, gb_trees:update(Pred, NewInsertion, InsertionsAcc)}; + {_, Val} -> + ?pp_debug("~nThere has been insertions along the edge L~w already, and for that operand too | Op=",[Pred]),pp_arg(Op), + {Val, InsertionsAcc} + end; + none -> + ?pp_debug("~nThere has been no insertion along the edge L~w, (and not for that operand, of course)| Op=",[Pred]),pp_arg(Op), + D = Op#bottom.var, + Expr2 = ?RTL:alu_dst_update(Expr, D), + Inst = manufacture_computation(Pred,Expr2,Visited), + NewInsertion = #insertion{from=[{Op,D}],code=[Inst]}, + {D, gb_trees:insert(Pred,NewInsertion, InsertionsAcc)} + end; + #const_expr{} -> + case gb_trees:lookup(Pred,InsertionsAcc) of + {value,Insertion} -> + From = Insertion#insertion.from, + case lists:keyfind(Op, 1, From) of + false -> + ?pp_debug("~nThere have been insertions along the edge L~w already, but not for that operand | Op=",[Pred]),pp_arg(Op), + D = Op#const_expr.var, + Val = Op#const_expr.value, + Inst = ?RTL:mk_move(D, Val), + Code = Insertion#insertion.code, + NewInsertion = Insertion#insertion{from=[{Op,D}|From],code=[Inst|Code]}, + {D, gb_trees:update(Pred,NewInsertion,InsertionsAcc)}; + {_, Val} -> + ?pp_debug("~nThere have been insertions along the edge L~w already, and for that operand too | Op=",[Pred]),pp_arg(Op), + {Val, InsertionsAcc} + end; + none -> + ?pp_debug("~nThere has been no insertion along the edge L~w, (and not for that operand, of course)| Op=",[Pred]),pp_arg(Op), + D = Op#const_expr.var, + Val = Op#const_expr.value, + Inst = ?RTL:mk_move(D, Val), + NewInsertion = #insertion{from=[{Op,D}],code=[Inst]}, + {D, gb_trees:insert(Pred,NewInsertion, InsertionsAcc)} + end; + #eop{} -> + %% We treat expressions like bottoms + %% The value must be recomputed, and therefore not available... + case gb_trees:lookup(Pred,InsertionsAcc) of + {value,Insertion} -> + From = Insertion#insertion.from, + case lists:keyfind(Op, 1, From) of + false -> + ?pp_debug("~nThere has been insertions along the edge L~w already, but not for that operand | Op=",[Pred]),pp_arg(Op), + D = Op#eop.var, + Expr2 = ?RTL:alu_dst_update(Expr, D), + Inst = manufacture_computation(Pred,Expr2,Visited), + Code = Insertion#insertion.code, + NewInsertion = Insertion#insertion{from=[{Op,D}|From],code=[Inst|Code]}, + {D, gb_trees:update(Pred,NewInsertion, InsertionsAcc)}; + {_, Val} -> + ?pp_debug("~nThere has been insertions along the edge L~w already, and for that operand too | Op=",[Pred]),pp_arg(Op), + {Val, InsertionsAcc} + end; + none -> + ?pp_debug("~nThere has been no insertion along the edge L~w, (and not for that operand, of course)| Op=",[Pred]),pp_arg(Op), + D = Op#eop.var, + Expr2 = ?RTL:alu_dst_update(Expr, D), + Inst = manufacture_computation(Pred,Expr2,Visited), + NewInsertion = #insertion{from=[{Op,D}],code=[Inst]}, + {D, gb_trees:insert(Pred, NewInsertion, InsertionsAcc)} + end; + #temp{} -> + case gb_trees:lookup(Pred,InsertionsAcc) of + {value,Insertion} -> + From = Insertion#insertion.from, + case lists:keyfind(Op, 1, From) of + false -> + ?pp_debug("~nThere has been insertions along the edge L~w already, but not for that operand | Op=",[Pred]),pp_arg(Op), + Key = Op#temp.key, + {_V,Xsi} = ?GRAPH:vertex(XsiG,Key), + case Xsi#xsi.wba of + true -> + ?pp_debug("~nBut the operand is a WBA Xsi: no need for insertion",[]), + {Op#temp.var, InsertionsAcc}; + _ -> + ?pp_debug("~nBut the operand is a NOT WBA Xsi: we must make an insertion",[]), + D = ?RTL:mk_new_var(), + Expr2 = ?RTL:alu_dst_update(Expr, D), + Inst = manufacture_computation(Pred,Expr2,Visited), + Code = Insertion#insertion.code, + NewInsertion = Insertion#insertion{from=[{Op,D}|From],code=[Inst|Code]}, + {D, gb_trees:update(Pred, NewInsertion, InsertionsAcc)} + end; + {_, Val} -> + ?pp_debug("~nThere has been insertions along the edge L~w already, and for that operand too (Op=~w)",[Pred,Op]), + ?pp_debug("~nThis means, this temp is a WBA Xsi's definition",[]), + {Val, InsertionsAcc} + end; + none -> + ?pp_debug("~nThere has been no insertion along the edge L~w, (and not for that operand, of course | Op=",[Pred]),pp_arg(Op), + Key = Op#temp.key, + {_V,Xsi} = ?GRAPH:vertex(XsiG,Key), + case Xsi#xsi.wba of + true -> + ?pp_debug("~nBut the operand is a WBA Xsi: no need for insertion",[]), + {Op#temp.var, InsertionsAcc}; + _ -> + ?pp_debug("~nBut the operand is a NOT WBA Xsi: we must make an insertion",[]), + D = ?RTL:mk_new_var(), + Expr2 = ?RTL:alu_dst_update(Expr, D), + Inst = manufacture_computation(Pred,Expr2,Visited), + NewInsertion = #insertion{from=[{Op,D}],code=[Inst]}, + {D, gb_trees:insert(Pred, NewInsertion, InsertionsAcc)} + end + end; + _ -> + ?pp_debug("~nThe operand (Op=",[]),pp_arg(Op),?pp_debug(") is a real variable, no need for insertion along L~w",[Pred]), + {Op, InsertionsAcc} + end, NewXsiOp = XsiOp#xsi_op{op=Dst}, get_insertions(Ops, [NewXsiOp|OpAcc], NewInsertionsAcc, Visited, Expr, XsiG). |