Merge branch 'bjorn/compiler/minor-optimization-polishing/OTP-10193'

* bjorn/compiler/minor-optimization-polishing/OTP-10193: (25 commits)
  beam_bsm: Handle calls slightly better
  Break apart tail-recursive call instructions
  Represent the 'send' instruction as a call_ext/2 instruction
  Rewrite select_val and select_tuple_arity to a select instruction
  Rewrite binary creation instructions to bs_init instructions
  Rewrite bs_add, bs_utf*_size to BIF instructions in optimizations
  Rewrite bs_put* instructions to a generic bs_put instruction
  Refactor removal of unused labels
  Introduce the mandatory beam_a and beam_z passes
  compile: Fix bug in selection of passes
  beam_receive: Optimize receives using refs created by spawn_monitor/{1,3}
  compile: Give a friendler error message if a parse transform cannot be found
  beam_jump: Don't move a block which can be entered via a fallthrough
  beam_jump: Fix broken optimization
  v3_kernel: Fix match code for matched out segment size in multiple clauses
  Improve binary matching of literals
  v3_codegen: Combine adjacent bs_match_string instructions
  beam_bool: Recognize more safe optimizations
  beam_utils: Correct usage calculations for GC BIFs in blocks
  beam_utils:live_opt/1: Correct liveness calculation for 'try'
  ...

1 files changed, 14 insertions, 13 deletions

diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl
index 0a368df5d6..df1af36eeb 100644
--- a/lib/compiler/src/compile.erl
+++ b/lib/compiler/src/compile.erl
@@ -224,6 +224,8 @@ format_error({delete_temp,File,Error}) ->
 		  [File,file:format_error(Error)]);
 format_error({parse_transform,M,R}) ->
     io_lib:format("error in parse transform '~s': ~p", [M, R]);
+format_error({undef_parse_transform,M}) ->
+    io_lib:format("undefined parse transform '~s'", [M]);
 format_error({core_transform,M,R}) ->
     io_lib:format("error in core transform '~s': ~p", [M, R]);
 format_error({crash,Pass,Reason}) ->
@@ -551,12 +553,12 @@ select_list_passes_1([{iff,Flag,{done,Ext}}|Ps], Opts, Acc) ->
     end;
 select_list_passes_1([{iff=Op,Flag,List0}|Ps], Opts, Acc) when is_list(List0) ->
     case select_list_passes(List0, Opts) of
-	{done,_}=Done -> Done;
+	{done,List} -> {done,reverse(Acc) ++ List};
 	{not_done,List} -> select_list_passes_1(Ps, Opts, [{Op,Flag,List}|Acc])
     end;
 select_list_passes_1([{unless=Op,Flag,List0}|Ps], Opts, Acc) when is_list(List0) ->
     case select_list_passes(List0, Opts) of
-	{done,_}=Done -> Done;
+	{done,List} -> {done,reverse(Acc) ++ List};
 	{not_done,List} -> select_list_passes_1(Ps, Opts, [{Op,Flag,List}|Acc])
     end;
 select_list_passes_1([P|Ps], Opts, Acc) ->
@@ -630,7 +632,8 @@ kernel_passes() ->
 asm_passes() ->
     %% Assembly level optimisations.
     [{delay,
-      [{unless,no_postopt,
+      [{pass,beam_a},
+       {unless,no_postopt,
 	[{pass,beam_block},
 	 {iff,dblk,{listing,"block"}},
 	 {unless,no_except,{pass,beam_except}},
@@ -657,13 +660,11 @@ asm_passes() ->
 	 {iff,dtrim,{listing,"trim"}},
 	 {pass,beam_flatten}]},
 
-       %% If post optimizations are turned off, we still coalesce
-       %% adjacent labels and remove unused labels to keep the
-       %% HiPE compiler happy.
-       {iff,no_postopt,
-	[?pass(beam_unused_labels),
-	 {pass,beam_clean}]},
+       %% If post optimizations are turned off, we still
+       %% need to do a few clean-ups to code.
+       {iff,no_postopt,[{pass,beam_clean}]},
 
+       {pass,beam_z},
        {iff,dopt,{listing,"optimize"}},
        {iff,'S',{listing,"S"}},
        {iff,'to_asm',{done,"S"}}]},
@@ -850,6 +851,10 @@ foldl_transform(St, [T|Ts]) ->
 	{error,Es,Ws} ->
 	    {error,St#compile{warnings=St#compile.warnings ++ Ws,
 			      errors=St#compile.errors ++ Es}};
+	{'EXIT',{undef,_}} ->
+	    Es = [{St#compile.ifile,[{none,compile,
+				      {undef_parse_transform,T}}]}],
+	    {error,St#compile{errors=St#compile.errors ++ Es}};
 	{'EXIT',R} ->
 	    Es = [{St#compile.ifile,[{none,compile,{parse_transform,T,R}}]}],
 	    {error,St#compile{errors=St#compile.errors ++ Es}};
@@ -1236,10 +1241,6 @@ random_bytes_1(N, Acc) -> random_bytes_1(N-1, [random:uniform(255)|Acc]).
 save_core_code(St) ->
     {ok,St#compile{core_code=cerl:from_records(St#compile.code)}}.
 
-beam_unused_labels(#compile{code=Code0}=St) ->
-    Code = beam_jump:module_labels(Code0),
-    {ok,St#compile{code=Code}}.
-
 beam_asm(#compile{ifile=File,code=Code0,
 		  abstract_code=Abst,mod_options=Opts0}=St) ->
     Source = filename:absname(File),