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authorBjörn Gustavsson <bjorn@erlang.org>2012-09-04 10:53:40 +0200
committerBjörn Gustavsson <bjorn@erlang.org>2012-10-09 15:24:40 +0200
commit8c9863948b440f2741b6df3ffda2c6dd2b7b363c (patch)
tree68f08d615672add70c701bf6bf796513228d9367 /lib/compiler
parente38dc4aaeb769aaf531c66e508f475ed24c25ffd (diff)
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Introduce the mandatory beam_a and beam_z passes
Introduce the mandary beam_a pass that will be run directly after code generation, and the mandatory beam_z pass that will be run just before beam_asm. Since these passes surround the optimizations, beam_a can (for example) do instruction renaming to simplify the optimization passes and beam_z can undo those renamings.
Diffstat (limited to 'lib/compiler')
-rw-r--r--lib/compiler/src/Makefile2
-rw-r--r--lib/compiler/src/beam_a.erl39
-rw-r--r--lib/compiler/src/beam_z.erl38
-rw-r--r--lib/compiler/src/compile.erl4
-rw-r--r--lib/compiler/src/compiler.app.src2
-rw-r--r--lib/compiler/test/misc_SUITE.erl15
6 files changed, 99 insertions, 1 deletions
diff --git a/lib/compiler/src/Makefile b/lib/compiler/src/Makefile
index 958d3501c7..cbcbf79839 100644
--- a/lib/compiler/src/Makefile
+++ b/lib/compiler/src/Makefile
@@ -45,6 +45,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/compiler-$(VSN)
# Target Specs
# ----------------------------------------------------
MODULES = \
+ beam_a \
beam_asm \
beam_block \
beam_bool \
@@ -65,6 +66,7 @@ MODULES = \
beam_type \
beam_utils \
beam_validator \
+ beam_z \
cerl \
cerl_clauses \
cerl_inline \
diff --git a/lib/compiler/src/beam_a.erl b/lib/compiler/src/beam_a.erl
new file mode 100644
index 0000000000..3d073f63df
--- /dev/null
+++ b/lib/compiler/src/beam_a.erl
@@ -0,0 +1,39 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 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%
+%%
+%% Purpose: Run directly after code generation to do any normalization
+%% or preparation to simplify the optimization passes.
+%% (Mandatory.)
+
+-module(beam_a).
+
+-export([module/2]).
+
+module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
+ Fs = [function(F) || F <- Fs0],
+ {ok,{Mod,Exp,Attr,Fs,Lc}}.
+
+function({function,Name,Arity,CLabel,Is}) ->
+ try
+ {function,Name,Arity,CLabel,Is}
+ catch
+ Class:Error ->
+ Stack = erlang:get_stacktrace(),
+ io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+ erlang:raise(Class, Error, Stack)
+ end.
diff --git a/lib/compiler/src/beam_z.erl b/lib/compiler/src/beam_z.erl
new file mode 100644
index 0000000000..706500e01c
--- /dev/null
+++ b/lib/compiler/src/beam_z.erl
@@ -0,0 +1,38 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 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%
+%%
+%% Purpose: Run right before beam_asm to do any final fix-ups or clean-ups.
+%% (Mandatory.)
+
+-module(beam_z).
+
+-export([module/2]).
+
+module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
+ Fs = [function(F) || F <- Fs0],
+ {ok,{Mod,Exp,Attr,Fs,Lc}}.
+
+function({function,Name,Arity,CLabel,Is}) ->
+ try
+ {function,Name,Arity,CLabel,Is}
+ catch
+ Class:Error ->
+ Stack = erlang:get_stacktrace(),
+ io:fwrite("Function: ~w/~w\n", [Name,Arity]),
+ erlang:raise(Class, Error, Stack)
+ end.
diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl
index 2f374e6fb0..0346c0441a 100644
--- a/lib/compiler/src/compile.erl
+++ b/lib/compiler/src/compile.erl
@@ -632,7 +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}},
@@ -666,6 +667,7 @@ asm_passes() ->
[?pass(beam_unused_labels),
{pass,beam_clean}]},
+ {pass,beam_z},
{iff,dopt,{listing,"optimize"}},
{iff,'S',{listing,"S"}},
{iff,'to_asm',{done,"S"}}]},
diff --git a/lib/compiler/src/compiler.app.src b/lib/compiler/src/compiler.app.src
index 1133882728..94c78e68f9 100644
--- a/lib/compiler/src/compiler.app.src
+++ b/lib/compiler/src/compiler.app.src
@@ -20,6 +20,7 @@
[{description, "ERTS CXC 138 10"},
{vsn, "%VSN%"},
{modules, [
+ beam_a,
beam_asm,
beam_block,
beam_bool,
@@ -40,6 +41,7 @@
beam_type,
beam_utils,
beam_validator,
+ beam_z,
cerl,
cerl_clauses,
cerl_inline,
diff --git a/lib/compiler/test/misc_SUITE.erl b/lib/compiler/test/misc_SUITE.erl
index 0376c7ef3e..6df8b2ac30 100644
--- a/lib/compiler/test/misc_SUITE.erl
+++ b/lib/compiler/test/misc_SUITE.erl
@@ -182,6 +182,14 @@ silly_coverage(Config) when is_list(Config) ->
CodegenInput = {?MODULE,[{foo,0}],[],[{function,foo,0,[a|b],a,b,[]}]},
?line expect_error(fun() -> v3_codegen:module(CodegenInput, []) end),
+ %% beam_a
+ BeamAInput = {?MODULE,[{foo,0}],[],
+ [{function,foo,0,2,
+ [{label,1},
+ {func_info,{atom,?MODULE},{atom,foo},0},
+ {label,2}|non_proper_list]}],99},
+ expect_error(fun() -> beam_a:module(BeamAInput, []) end),
+
%% beam_block
BlockInput = {?MODULE,[{foo,0}],[],
[{function,foo,0,2,
@@ -263,6 +271,13 @@ silly_coverage(Config) when is_list(Config) ->
{block,[a|b]}]}],0},
?line expect_error(fun() -> beam_receive:module(ReceiveInput, []) end),
+ BeamZInput = {?MODULE,[{foo,0}],[],
+ [{function,foo,0,2,
+ [{label,1},
+ {func_info,{atom,?MODULE},{atom,foo},0},
+ {label,2}|non_proper_list]}],99},
+ expect_error(fun() -> beam_z:module(BeamZInput, []) end),
+
ok.
expect_error(Fun) ->