Merge branch 'bg/compiler-remove-r11-support' into dev

* bg/compiler-remove-r11-support:
  compiler: Don't support the no_binaries option
  erts: Don't support the put_string/3 instruction
  compiler: Don't support the no_constant_pool option
  compiler: Don't support the r11 option
  test_server: Don't support communication with R11 nodes
  binary_SUITE: Don't test bit-level binary roundtrips with R11 nodes
  erts: Test compatibility of funs with R12 instead of R11

OTP-8531 bg/compiler-remove-r11-support

12 files changed, 69 insertions, 156 deletions

diff --git a/lib/compiler/src/beam_block.erl b/lib/compiler/src/beam_block.erl
index d4a4ddca8a..32703b4dd1 100644
--- a/lib/compiler/src/beam_block.erl
+++ b/lib/compiler/src/beam_block.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 1999-2010. 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%
 %%
 %% Purpose : Partitions assembly instructions into basic blocks and
@@ -140,7 +140,6 @@ collect({move,S,D})          -> {set,[D],[S],move};
 collect({put_list,S1,S2,D})  -> {set,[D],[S1,S2],put_list};
 collect({put_tuple,A,D})     -> {set,[D],[],{put_tuple,A}};
 collect({put,S})             -> {set,[],[S],put};
-collect({put_string,L,S,D})  -> {set,[D],[],{put_string,L,S}};
 collect({get_tuple_element,S,I,D}) -> {set,[D],[S],{get_tuple_element,I}};
 collect({set_tuple_element,S,D,I}) -> {set,[],[S,D],{set_tuple_element,I}};
 collect({get_list,S,D1,D2})  -> {set,[D1,D2],[S],get_list};
@@ -204,7 +203,6 @@ alloc_may_pass({set,_,_,{set_tuple_element,_}}) -> false;
 alloc_may_pass({set,_,_,put_list}) -> false;
 alloc_may_pass({set,_,_,{put_tuple,_}}) -> false;
 alloc_may_pass({set,_,_,put}) -> false;
-alloc_may_pass({set,_,_,{put_string,_,_}}) -> false;
 alloc_may_pass({set,_,_,_}) -> true.
     
 combine_alloc({_,Ns,Nh1,Init}, {_,nostack,Nh2,[]})  ->
diff --git a/lib/compiler/src/beam_flatten.erl b/lib/compiler/src/beam_flatten.erl
index d9de7e2495..6c7cb849aa 100644
--- a/lib/compiler/src/beam_flatten.erl
+++ b/lib/compiler/src/beam_flatten.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 1999-2010. 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%
 %%
 %% Purpose : Converts intermediate assembly code to final format.
@@ -57,7 +57,6 @@ norm({set,[D],[S],fconv})         -> {fconv,S,D};
 norm({set,[D],[S1,S2],put_list})  -> {put_list,S1,S2,D};
 norm({set,[D],[],{put_tuple,A}})  -> {put_tuple,A,D};
 norm({set,[],[S],put})            -> {put,S};
-norm({set,[D],[],{put_string,L,S}})       -> {put_string,L,S,D};
 norm({set,[D],[S],{get_tuple_element,I}}) -> {get_tuple_element,S,I,D};
 norm({set,[],[S,D],{set_tuple_element,I}}) -> {set_tuple_element,S,D,I};
 norm({set,[D1,D2],[S],get_list})          -> {get_list,S,D1,D2};
diff --git a/lib/compiler/src/beam_jump.erl b/lib/compiler/src/beam_jump.erl
index 739928f411..3cab55c4cb 100644
--- a/lib/compiler/src/beam_jump.erl
+++ b/lib/compiler/src/beam_jump.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 1999-2010. 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%
 %%
 %%% Purpose : Optimise jumps and remove unreachable code.
@@ -452,7 +452,6 @@ is_label_used_in_2({set,_,_,Info}, Lbl) ->
 	{'catch',{f,F}} -> F =:= Lbl;
 	{alloc,_,_} -> false;
 	{put_tuple,_} -> false;
-	{put_string,_,_} -> false;
 	{get_tuple_element,_} -> false;
 	{set_tuple_element,_} -> false;
 	_ when is_atom(Info) -> false
diff --git a/lib/compiler/src/beam_type.erl b/lib/compiler/src/beam_type.erl
index ba903a12b6..66c8816409 100644
--- a/lib/compiler/src/beam_type.erl
+++ b/lib/compiler/src/beam_type.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 1999-2010. 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%
 %%
 %% Purpose : Type-based optimisations.
@@ -253,8 +253,6 @@ flt_need_heap_2({set,_,_,{put_tuple,_}}, H, Fl) ->
     {[],H+1,Fl};
 flt_need_heap_2({set,_,_,put}, H, Fl) ->
     {[],H+1,Fl};
-flt_need_heap_2({set,_,_,{put_string,L,_Str}}, H, Fl) ->
-    {[],H+2*L,Fl};
 %% Then the "neutral" instructions. We just pass them.
 flt_need_heap_2({set,[{fr,_}],_,_}, H, Fl) ->
     {[],H,Fl};
diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl
index b853800d73..5017fd2c23 100644
--- a/lib/compiler/src/compile.erl
+++ b/lib/compiler/src/compile.erl
@@ -162,13 +162,8 @@ expand_opt(report, Os) ->
     [report_errors,report_warnings|Os];
 expand_opt(return, Os) ->
     [return_errors,return_warnings|Os];
-expand_opt(r11, Os) ->
-    [no_stack_trimming,no_binaries,no_constant_pool|Os];
 expand_opt({debug_info_key,_}=O, Os) ->
     [encrypt_debug_info,O|Os];
-expand_opt(no_binaries=O, Os) ->
-    %%Turn off the entire type optimization pass.
-    [no_topt,O|Os];
 expand_opt(no_float_opt, Os) ->
     %%Turn off the entire type optimization pass.
     [no_topt|Os];
@@ -590,7 +585,7 @@ core_passes() ->
 
 kernel_passes() ->
     %% Destructive setelement/3 optimization and core lint.
-    [{unless,no_constant_pool,?pass(core_dsetel_module)}, %Not safe without constant pool.
+    [?pass(core_dsetel_module),
      {iff,dsetel,{listing,"dsetel"}},
 
      {iff,clint,?pass(core_lint_module)},
diff --git a/lib/compiler/src/genop.tab b/lib/compiler/src/genop.tab
index 6874054495..47e6e72402 100644
--- a/lib/compiler/src/genop.tab
+++ b/lib/compiler/src/genop.tab
@@ -1,19 +1,19 @@
 #
 # %CopyrightBegin%
-# 
-# Copyright Ericsson AB 1998-2009. All Rights Reserved.
-# 
+#
+# Copyright Ericsson AB 1998-2010. 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%
 #
 BEAM_FORMAT_NUMBER=0
@@ -132,7 +132,7 @@ BEAM_FORMAT_NUMBER=0
 #
 # Building terms.
 #
-68: put_string/3
+68: -put_string/3
 69: put_list/3
 70: put_tuple/2
 71: put/1
diff --git a/lib/compiler/src/sys_core_dsetel.erl b/lib/compiler/src/sys_core_dsetel.erl
index c38eab7b42..f6696992b9 100644
--- a/lib/compiler/src/sys_core_dsetel.erl
+++ b/lib/compiler/src/sys_core_dsetel.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 2002-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 2002-2010. 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%
 %%
 %% Purpose : Using dsetelement to make multiple-field record updates
@@ -57,8 +57,6 @@
 %% if X1 is used exactly once.
 %% Thus, we need to track variable usage.
 %%
-%% NOTE: This pass must NOT be used if the no_constant_pool option is used.
-%%
 
 -module(sys_core_dsetel).
 
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
index 83113d1652..1f05b4f6b4 100644
--- a/lib/compiler/src/v3_codegen.erl
+++ b/lib/compiler/src/v3_codegen.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 1999-2010. 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%
 %%
 %% Purpose : Code generator for Beam.
@@ -209,7 +209,6 @@ need_heap_1(#l{ke={set,_,Val}}, H) ->
     {[],H + case Val of
 		{cons,_} -> 2;
 		{tuple,Es} -> 1 + length(Es);
-		{string,S} -> 2 * length(S);
 		_Other -> 0
 	    end};
 need_heap_1(#l{ke={bif,dsetelement,_As,_Rs},i=I}, H) ->
@@ -1424,8 +1423,6 @@ set_cg([{var,R}], Con, Le, Vdb, Bef, St) ->
 		  [{put_tuple,length(Es),Ret}] ++ cg_build_args(Es, Bef);
 	      {var,V} ->	  % Normally removed by kernel optimizer.
 		  [{move,fetch_var(V, Int),Ret}];
-	      {string,Str} = String ->
-		  [{put_string,length(Str),String,Ret}];
 	      Other ->
 		  [{move,Other,Ret}]
 	  end,
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index dfe15de4ff..8b04969b05 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -213,10 +213,7 @@ clause({clause,Lc,H0,G0,B0}, St0) ->
     catch
 	throw:nomatch ->
 	    St = add_warning(Lc, nomatch, St0),
-	    {noclause,St};			%Bad pattern
-	throw:no_binaries ->
-	    St = add_error(Lc, no_binaries, St0),
-	    {noclause,St}
+	    {noclause,St}			%Bad pattern
     end.
 
 clause_arity({clause,_,H0,_,_}) -> length(H0).
@@ -496,22 +493,18 @@ expr({tuple,L,Es0}, St0) ->
     {Es1,Eps,St1} = safe_list(Es0, St0),
     A = lineno_anno(L, St1),
     {ann_c_tuple(A, Es1),Eps,St1};
-expr({bin,L,Es0}, #core{opts=Opts}=St0) ->
-    St1 = case member(no_binaries, Opts) of
-	      false -> St0;
-	      true -> add_error(L, no_binaries, St0)
-	  end,
-    try expr_bin(Es0, lineno_anno(L, St1), St1) of
+expr({bin,L,Es0}, St0) ->
+    try expr_bin(Es0, lineno_anno(L, St0), St0) of
 	{_,_,_}=Res -> Res
     catch
 	throw:bad_binary ->
-	    St2 = add_warning(L, bad_binary, St1),
-	    LineAnno = lineno_anno(L, St2),
+	    St = add_warning(L, bad_binary, St0),
+	    LineAnno = lineno_anno(L, St),
 	    As = [#c_literal{anno=LineAnno,val=badarg}],
 	    {#icall{anno=#a{anno=LineAnno},	%Must have an #a{}
 		    module=#c_literal{anno=LineAnno,val=erlang},
 		    name=#c_literal{anno=LineAnno,val=error},
-		    args=As},[],St2}
+		    args=As},[],St}
     end;
 expr({block,_,Es0}, St0) ->
     %% Inline the block directly.
@@ -618,10 +611,6 @@ expr({match,L,P0,E0}, St0) ->
 	    St = add_warning(L, nomatch, St2),
 	    {#icase{anno=#a{anno=Lanno},
 		    args=[E2],clauses=[],fc=Fc},Eps,St};
-	no_binaries ->
-	    St = add_error(L, no_binaries, St2),
-	    {#icase{anno=#a{anno=Lanno},
-		    args=[E2],clauses=[],fc=Fc},Eps,St};
 	Other when not is_atom(Other) ->
 	    {#imatch{anno=#a{anno=Lanno},pat=P2,arg=E2,fc=Fc},Eps,St2}
     end;
@@ -1443,15 +1432,10 @@ pattern({cons,L,H,T}, St) ->
     ann_c_cons(lineno_anno(L, St), pattern(H, St), pattern(T, St));
 pattern({tuple,L,Ps}, St) ->
     ann_c_tuple(lineno_anno(L, St), pattern_list(Ps, St));
-pattern({bin,L,Ps}, #core{opts=Opts}=St) ->
-    case member(no_binaries, Opts) of
-	false ->
-	    %% We don't create a #ibinary record here, since there is
-	    %% no need to hold any used/new annotations in a pattern.
-	    #c_binary{anno=lineno_anno(L, St),segments=pat_bin(Ps, St)};
-	true ->
-	    throw(no_binaries)
-    end;
+pattern({bin,L,Ps}, St) ->
+    %% We don't create a #ibinary record here, since there is
+    %% no need to hold any used/new annotations in a pattern.
+    #c_binary{anno=lineno_anno(L, St),segments=pat_bin(Ps, St)};
 pattern({match,_,P1,P2}, St) ->
     pat_alias(pattern(P1, St), pattern(P2, St)).
 
@@ -2116,21 +2100,15 @@ is_simp_bin(Es) ->
 %%% Handling of warnings.
 %%%
 
--type err_desc() :: 'bad_binary' | 'no_binaries' | 'nomatch'.
+-type err_desc() :: 'bad_binary' | 'nomatch'.
 
 -spec format_error(err_desc()) -> nonempty_string().
 
 format_error(nomatch) ->
     "pattern cannot possibly match";
 format_error(bad_binary) ->
-    "binary construction will fail because of a type mismatch";
-format_error(no_binaries) ->
-    "bit syntax is not allowed to be used when compatibility with a previous "
-	"version has been requested".
+    "binary construction will fail because of a type mismatch".
 
 add_warning(Line, Term, #core{ws=Ws,file=[{file,File}]}=St) when Line >= 0 ->
     St#core{ws=[{File,[{location(Line),?MODULE,Term}]}|Ws]};
 add_warning(_, _, St) -> St.
-
-add_error(Line, Term, #core{es=Es,file=[{file,File}]}=St) ->
-    St#core{es=[{File,[{location(abs_line(Line)),?MODULE,Term}]}|Es]}.
diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl
index 8568071e57..f1215e8a35 100644
--- a/lib/compiler/src/v3_kernel.erl
+++ b/lib/compiler/src/v3_kernel.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 1999-2010. 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%
 %%
 %% Purpose : Transform Core Erlang to Kernel Erlang
@@ -126,12 +126,8 @@ copy_anno(Kdst, Ksrc) ->
 -spec module(cerl:c_module(), [compile:option()]) ->
 	{'ok', #k_mdef{}, [warning()]}.
 
-module(#c_module{anno=A,name=M,exports=Es,attrs=As,defs=Fs}, Options) ->
-    Lit = case member(no_constant_pool, Options) of
-	      true -> no;
-	      false -> dict:new()
-	  end,
-    St0 = #kern{lit=Lit},
+module(#c_module{anno=A,name=M,exports=Es,attrs=As,defs=Fs}, _Options) ->
+    St0 = #kern{lit=dict:new()},
     {Kfs,St} = mapfoldl(fun function/2, St0, Fs),
     Kes = map(fun (#c_var{name={_,_}=Fname}) -> Fname end, Es),
     Kas = map(fun ({#c_literal{val=N},V}) ->
@@ -240,11 +236,6 @@ expr(#c_var{anno=A,name={_Name,Arity}}=Fname, Sub, St) ->
     expr(Fun, Sub, St);
 expr(#c_var{anno=A,name=V}, Sub, St) ->
     {#k_var{anno=A,name=get_vsub(V, Sub)},[],St};
-expr(#c_literal{anno=A,val=Lit}, Sub, #kern{lit=no}=St) ->
-    %% No constant pools for compatibility with a previous version.
-    %% Fully expand the literal.
-    Core = expand_literal(Lit, A),
-    expr(Core, Sub, St);
 expr(#c_literal{}=Lit, Sub, St) ->
     Core = handle_literal(Lit),
     expr(Core, Sub, St);
@@ -265,9 +256,6 @@ expr(#k_float{}=V, _Sub, St) ->
     {V,[],St};
 expr(#k_atom{}=V, _Sub, St) ->
     {V,[],St};
-expr(#k_string{}=V, _Sub, St) ->
-    %% Only for compatibility with a previous version.
-    {V,[],St};
 expr(#c_cons{anno=A,hd=Ch,tl=Ct}, Sub, St0) ->
     %% Do cons in two steps, first the expressions left to right, then
     %% any remaining literals right to left.
@@ -980,11 +968,6 @@ match_var([U|Us], Cs0, Def, St) ->
 %%  according to type, the order is really irrelevant but tries to be
 %%  smart.
 
-match_con(Us, Cs0, Def, #kern{lit=no}=St) ->
-    %% No constant pool (for compatibility with R11B).
-    %% We must expand literals.
-    Cs = [expand_pat_lit_clause(C, true) || C <- Cs0],
-    match_con_1(Us, Cs, Def, St);
 match_con(Us, [C], Def, St) ->
     %% There is only one clause. We can keep literal tuples and
     %% lists, but we must convert []/integer/float/atom literals
@@ -1783,7 +1766,6 @@ lit_vars(#k_int{}) -> [];
 lit_vars(#k_float{}) -> [];
 lit_vars(#k_atom{}) -> [];
 %%lit_vars(#k_char{}) -> [];
-lit_vars(#k_string{}) -> [];
 lit_vars(#k_nil{}) -> [];
 lit_vars(#k_cons{hd=H,tl=T}) ->
     union(lit_vars(H), lit_vars(T));
@@ -1845,48 +1827,20 @@ handle_literal(#c_literal{anno=A,val=V}) ->
     case V of
 	[_|_] ->
 	    #k_literal{anno=A,val=V};
+	[] ->
+	    #k_nil{anno=A};
 	V when is_tuple(V) ->
 	    #k_literal{anno=A,val=V};
 	V when is_bitstring(V) ->
 	    #k_literal{anno=A,val=V};
-	_ ->
-	    expand_literal(V, A)
+	V when is_integer(V) ->
+	    #k_int{anno=A,val=V};
+	V when is_float(V) ->
+	    #k_float{anno=A,val=V};
+	V when is_atom(V) ->
+	    #k_atom{anno=A,val=V}
     end.
 
-%% expand_literal(Literal, Anno) -> CoreTerm | KernelTerm
-%%  Fully expand the literal. Atomic terms such as integers are directly
-%%  translated to the Kernel Erlang format, while complex terms are kept
-%%  in the Core Erlang format (but the content is recursively processed).
-
-expand_literal([H|T]=V, A) when is_integer(H), 0 =< H, H =< 255 ->
-    case is_print_char_list(T) of
-	false ->
-	    #c_cons{anno=A,hd=#k_int{anno=A,val=H},tl=expand_literal(T, A)};
-	true ->
-	    #k_string{anno=A,val=V}
-    end;
-expand_literal([H|T], A) ->
-    #c_cons{anno=A,hd=expand_literal(H, A),tl=expand_literal(T, A)};
-expand_literal([], A) ->
-    #k_nil{anno=A};
-expand_literal(V, A) when is_tuple(V) ->
-    #c_tuple{anno=A,es=expand_literal_list(tuple_to_list(V), A)};
-expand_literal(V, A) when is_integer(V) ->
-    #k_int{anno=A,val=V};
-expand_literal(V, A) when is_float(V) ->
-    #k_float{anno=A,val=V};
-expand_literal(V, A) when is_atom(V) ->
-    #k_atom{anno=A,val=V}.
-
-expand_literal_list([H|T], A) ->
-    [expand_literal(H, A)|expand_literal_list(T, A)];
-expand_literal_list([], _) -> [].
-
-is_print_char_list([H|T]) when is_integer(H), 0 =< H, H =< 255 ->
-    is_print_char_list(T);
-is_print_char_list([]) -> true;
-is_print_char_list(_) -> false.
-
 make_list(Es) ->
     foldr(fun(E, Acc) ->
  		  #c_cons{hd=E,tl=Acc}
diff --git a/lib/compiler/src/v3_kernel_pp.erl b/lib/compiler/src/v3_kernel_pp.erl
index b1ca907d11..a300dd283f 100644
--- a/lib/compiler/src/v3_kernel_pp.erl
+++ b/lib/compiler/src/v3_kernel_pp.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 1999-2010. 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%
 %%
 %% Purpose : Kernel Erlang (naive) prettyprinter
@@ -80,7 +80,6 @@ format_1(#k_atom{val=A}, _Ctxt) -> core_atom(A);
 format_1(#k_float{val=F}, _Ctxt) -> float_to_list(F);
 format_1(#k_int{val=I}, _Ctxt) -> integer_to_list(I);
 format_1(#k_nil{}, _Ctxt) -> "[]";
-format_1(#k_string{val=S}, _Ctxt) -> io_lib:write_string(S);
 format_1(#k_var{name=V}, _Ctxt) ->
     if is_atom(V) ->
 	    case atom_to_list(V) of
diff --git a/lib/compiler/src/v3_life.erl b/lib/compiler/src/v3_life.erl
index 8e6b153d57..9fda37530b 100644
--- a/lib/compiler/src/v3_life.erl
+++ b/lib/compiler/src/v3_life.erl
@@ -418,7 +418,6 @@ literal(#k_int{val=I}, _) -> {integer,I};
 literal(#k_float{val=F}, _) -> {float,F};
 literal(#k_atom{val=N}, _) -> {atom,N};
 %%literal(#k_char{val=C}, _) -> {char,C};
-literal(#k_string{val=S}, _) -> {string,S};
 literal(#k_nil{}, _) -> nil;
 literal(#k_cons{hd=H,tl=T}, Ctxt) ->
     {cons,[literal(H, Ctxt),literal(T, Ctxt)]};
@@ -443,7 +442,6 @@ literal2(#k_int{val=I}, _) -> {integer,I};
 literal2(#k_float{val=F}, _) -> {float,F};
 literal2(#k_atom{val=N}, _) -> {atom,N};
 %%literal2(#k_char{val=C}, _) -> {char,C};
-literal2(#k_string{val=S}, _) -> {string,S};
 literal2(#k_nil{}, _) -> nil;
 literal2(#k_cons{hd=H,tl=T}, Ctxt) ->
     {cons,[literal2(H, Ctxt),literal2(T, Ctxt)]};