aboutsummaryrefslogtreecommitdiffstats
path: root/lib/hipe/ppc/hipe_ppc_frame.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/hipe/ppc/hipe_ppc_frame.erl')
-rw-r--r--lib/hipe/ppc/hipe_ppc_frame.erl136
1 files changed, 81 insertions, 55 deletions
diff --git a/lib/hipe/ppc/hipe_ppc_frame.erl b/lib/hipe/ppc/hipe_ppc_frame.erl
index ff0450270f..b88b75a5bd 100644
--- a/lib/hipe/ppc/hipe_ppc_frame.erl
+++ b/lib/hipe/ppc/hipe_ppc_frame.erl
@@ -1,9 +1,5 @@
%% -*- erlang-indent-level: 2 -*-
%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
-%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
@@ -15,25 +11,20 @@
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
-module(hipe_ppc_frame).
-export([frame/1]).
-include("hipe_ppc.hrl").
-include("../rtl/hipe_literals.hrl").
-frame(Defun) ->
- Formals = fix_formals(hipe_ppc:defun_formals(Defun)),
- Temps0 = all_temps(hipe_ppc:defun_code(Defun), Formals),
- MinFrame = defun_minframe(Defun),
+frame(CFG) ->
+ Formals = fix_formals(hipe_ppc_cfg:params(CFG)),
+ Temps0 = all_temps(CFG, Formals),
+ MinFrame = defun_minframe(CFG),
Temps = ensure_minframe(MinFrame, Temps0),
- ClobbersLR = clobbers_lr(hipe_ppc:defun_code(Defun)),
- CFG0 = hipe_ppc_cfg:init(Defun),
- Liveness = hipe_ppc_liveness_all:analyse(CFG0),
- CFG1 = do_body(CFG0, Liveness, Formals, Temps, ClobbersLR),
- hipe_ppc_cfg:linearise(CFG1).
+ ClobbersLR = clobbers_lr(CFG),
+ Liveness = hipe_ppc_liveness_all:analyse(CFG),
+ do_body(CFG, Liveness, Formals, Temps, ClobbersLR).
fix_formals(Formals) ->
fix_formals(hipe_ppc_registers:nr_args(), Formals).
@@ -44,27 +35,16 @@ fix_formals(_, []) -> [].
do_body(CFG0, Liveness, Formals, Temps, ClobbersLR) ->
Context = mk_context(Liveness, Formals, Temps, ClobbersLR),
- CFG1 = do_blocks(CFG0, Context),
+ CFG1 = hipe_ppc_cfg:map_bbs(
+ fun(Lbl, BB) -> do_block(Lbl, BB, Context) end, CFG0),
do_prologue(CFG1, Context).
-do_blocks(CFG, Context) ->
- Labels = hipe_ppc_cfg:labels(CFG),
- do_blocks(Labels, CFG, Context).
-
-do_blocks([Label|Labels], CFG, Context) ->
+do_block(Label, Block, Context) ->
Liveness = context_liveness(Context),
LiveOut = hipe_ppc_liveness_all:liveout(Liveness, Label),
- Block = hipe_ppc_cfg:bb(CFG, Label),
Code = hipe_bb:code(Block),
- NewCode = do_block(Code, LiveOut, Context),
- NewBlock = hipe_bb:code_update(Block, NewCode),
- NewCFG = hipe_ppc_cfg:bb_add(CFG, Label, NewBlock),
- do_blocks(Labels, NewCFG, Context);
-do_blocks([], CFG, _) ->
- CFG.
-
-do_block(Insns, LiveOut, Context) ->
- do_block(Insns, LiveOut, Context, context_framesize(Context), []).
+ NewCode = do_block(Code, LiveOut, Context, context_framesize(Context), []),
+ hipe_bb:code_update(Block, NewCode).
do_block([I|Insns], LiveOut, Context, FPoff0, RevCode) ->
{NewIs, FPoff1} = do_insn(I, LiveOut, Context, FPoff0),
@@ -86,10 +66,14 @@ do_insn(I, LiveOut, Context, FPoff) ->
do_pseudo_call_prepare(I, FPoff);
#pseudo_move{} ->
{do_pseudo_move(I, Context, FPoff), FPoff};
+ #pseudo_spill_move{} ->
+ {do_pseudo_spill_move(I, Context, FPoff), FPoff};
#pseudo_tailcall{} ->
{do_pseudo_tailcall(I, Context), context_framesize(Context)};
#pseudo_fmove{} ->
{do_pseudo_fmove(I, Context, FPoff), FPoff};
+ #pseudo_spill_fmove{} ->
+ {do_pseudo_spill_fmove(I, Context, FPoff), FPoff};
_ ->
{[I], FPoff}
end.
@@ -111,7 +95,26 @@ do_pseudo_move(I, Context, FPoff) ->
Offset = pseudo_offset(Src, FPoff, Context),
mk_load(hipe_ppc:ldop_word(), Dst, Offset, mk_sp(), []);
_ ->
- [hipe_ppc:mk_alu('or', Dst, Src, Src)]
+ case hipe_ppc:temp_reg(Dst) =:= hipe_ppc:temp_reg(Src) of
+ true -> [];
+ false -> [hipe_ppc:mk_alu('or', Dst, Src, Src)]
+ end
+ end
+ end.
+
+do_pseudo_spill_move(I, Context, FPoff) ->
+ #pseudo_spill_move{dst=Dst,temp=Temp,src=Src} = I,
+ case temp_is_pseudo(Src) andalso temp_is_pseudo(Dst) of
+ false -> % Register allocator changed its mind, turn back to move
+ do_pseudo_move(hipe_ppc:mk_pseudo_move(Dst, Src), Context, FPoff);
+ true ->
+ SrcOffset = pseudo_offset(Src, FPoff, Context),
+ DstOffset = pseudo_offset(Dst, FPoff, Context),
+ case SrcOffset =:= DstOffset of
+ true -> []; % omit move-to-self
+ false ->
+ mk_load(hipe_ppc:ldop_word(), Temp, SrcOffset, mk_sp(),
+ mk_store(hipe_ppc:stop_word(), Temp, DstOffset, mk_sp(), []))
end
end.
@@ -132,6 +135,22 @@ do_pseudo_fmove(I, Context, FPoff) ->
end
end.
+do_pseudo_spill_fmove(I, Context, FPoff) ->
+ #pseudo_spill_fmove{dst=Dst,temp=Temp,src=Src} = I,
+ case temp_is_pseudo(Src) andalso temp_is_pseudo(Dst) of
+ false -> % Register allocator changed its mind, turn back to move
+ do_pseudo_fmove(hipe_ppc:mk_pseudo_fmove(Dst, Src), Context, FPoff);
+ true ->
+ SrcOffset = pseudo_offset(Src, FPoff, Context),
+ DstOffset = pseudo_offset(Dst, FPoff, Context),
+ case SrcOffset =:= DstOffset of
+ true -> []; % omit move-to-self
+ false ->
+ hipe_ppc:mk_fload(Temp, SrcOffset, mk_sp(), 0)
+ ++ hipe_ppc:mk_fstore(Temp, DstOffset, mk_sp(), 0)
+ end
+ end.
+
pseudo_offset(Temp, FPoff, Context) ->
FPoff + context_offset(Context, Temp).
@@ -573,29 +592,41 @@ temp_is_pseudo(Temp) ->
%%% Detect if a Defun's body clobbers LR.
%%%
-clobbers_lr([I|Insns]) ->
- case I of
- #pseudo_call{} -> true;
- %% mtspr to lr cannot occur yet
- _ -> clobbers_lr(Insns)
- end;
-clobbers_lr([]) -> false.
+clobbers_lr(CFG) ->
+ any_insn(fun(#pseudo_call{}) -> true;
+ (_) -> false
+ end, CFG).
+
+any_insn(Pred, CFG) ->
+ %% Abuse fold to do an efficient "any"-operation using nonlocal control flow
+ FoundSatisfying = make_ref(),
+ try fold_insns(fun (I, _) ->
+ case Pred(I) of
+ true -> throw(FoundSatisfying);
+ false -> false
+ end
+ end, false, CFG)
+ of _ -> false
+ catch FoundSatisfying -> true
+ end.
%%%
%%% Build the set of all temps used in a Defun's body.
%%%
-all_temps(Code, Formals) ->
- S0 = find_temps(Code, tset_empty()),
+all_temps(CFG, Formals) ->
+ S0 = fold_insns(fun find_temps/2, tset_empty(), CFG),
S1 = tset_del_list(S0, Formals),
tset_filter(S1, fun(T) -> temp_is_pseudo(T) end).
-find_temps([I|Insns], S0) ->
+find_temps(I, S0) ->
S1 = tset_add_list(S0, hipe_ppc_defuse:insn_def_all(I)),
- S2 = tset_add_list(S1, hipe_ppc_defuse:insn_use_all(I)),
- find_temps(Insns, S2);
-find_temps([], S) ->
- S.
+ tset_add_list(S1, hipe_ppc_defuse:insn_use_all(I)).
+
+fold_insns(Fun, InitAcc, CFG) ->
+ hipe_ppc_cfg:fold_bbs(
+ fun(_, BB, Acc0) -> lists:foldl(Fun, Acc0, hipe_bb:code(BB)) end,
+ InitAcc, CFG).
tset_empty() ->
gb_sets:new().
@@ -624,16 +655,11 @@ tset_to_list(S) ->
%%% in the middle of a tailcall.
%%%
-defun_minframe(Defun) ->
- MaxTailArity = body_mta(hipe_ppc:defun_code(Defun), 0),
- MyArity = length(fix_formals(hipe_ppc:defun_formals(Defun))),
+defun_minframe(CFG) ->
+ MaxTailArity = fold_insns(fun insn_mta/2, 0, CFG),
+ MyArity = length(fix_formals(hipe_ppc_cfg:params(CFG))),
erlang:max(MaxTailArity - MyArity, 0).
-body_mta([I|Code], MTA) ->
- body_mta(Code, insn_mta(I, MTA));
-body_mta([], MTA) ->
- MTA.
-
insn_mta(I, MTA) ->
case I of
#pseudo_tailcall{arity=Arity} ->
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-04 18:56:28 +0000