%% -*- erlang-indent-level: 2 -*-
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2001-2015. 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
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% 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%
%%
%% ====================================================================
%% Copyright (c) 1998 by Erik Johansson. All Rights Reserved
%% ====================================================================
%% Filename : hipe.erl
%% Module : hipe
%% Purpose :
%% Notes :
%% History : * 1998-01-28 Erik Johansson ([email protected]): Created.
%% ====================================================================
%% @doc This is the direct interface to the HiPE compiler.
%%
%% <h3>Normal use</h3>
%%
%% <p>The normal way to native-compile an Erlang module using HiPE is to
%% include the atom <code>native</code> in the Erlang compiler options,
%% as in:
%%
%% <pre> 1> c(my_module, [native]).</pre></p>
%%
%% <p>Options to the HiPE compiler are then passed as follows:
%%
%% <pre> 1> c(my_module, [native,{hipe,Options}]).</pre></p>
%%
%% <p>For on-line help in the Erlang shell, call <a
%% href="#help-0"><code>hipe:help()</code></a>. Details on HiPE compiler
%% options are given by <a
%% href="#help_options-0"><code>hipe:help_options()</code></a>.</p>
%%
%% <h3>Using the direct interface - for advanced users only</h3>
%%
%% To compile a module to native code and automatically load the code
%% into memory, call <a href="#c-1"><code>hipe:c(Module)</code></a> or <a
%% href="#c-2"><code>hipe:c(Module, Options)</code></a>. Note that all
%% options are specific to the HiPE compiler. See the <a
%% href="#index">function index</a> for other compiler functions.
%%
%% <h3>Main Options</h3>
%%
%% Options are processed in the order they appear in the list; an
%% early option will shadow a later one.
%% <dl>
%% <dt><code>o0, 'O0', o1, 'O1', o2, 'O2', o3, 'O3'</code></dt>
%% <dd>Set optimization level (default 2).</dd>
%%
%% <dt><code>load</code></dt>
%% <dd>Automatically load the code into memory after compiling.</dd>
%%
%% <dt><code>time</code></dt>
%% <dd>Reports the compilation times for the different stages
%% of the compiler. Call <a
%% href="#help_option-1"><code>hipe:help_option(time)</code></a> for
%% details.</dd>
%%
%% <dt><code>{timeout, Time}</code></dt>
%% <dd>Sets the time the compiler is allowed to use for the
%% compilation. <code>Time</code> is time in ms or the atom
%% <code>infinity</code> (the default).</dd>
%%
%% <dt><code>verbose</code></dt>
%% <dd>Make the HiPE compiler output information about what it is
%% being done.</dd>
%% </dl>
%%
%% <h3>Advanced Options</h3>
%%
%% Note: You can also specify <code>{Option, false}</code> to turn a
%% particular option off, or <code>{Option, true}</code> to force it on.
%% Boolean-valued (<code>true</code>/<code>false</code>) options also
%% have negative-form aliases, e.g. <code>no_load</code> = <code>{load,
%% false}</code>.
%%
%% <p><dl>
%% <dt><code>debug</code></dt>
%% <dd>Outputs internal debugging information during
%% compilation.</dd>
%%
%% <dt><code>icode_ssa_copy_prop</code></dt>
%% <dd>Performs copy propagation on the SSA form on the Icode
%% level.</dd>
%%
%% <dt><code>icode_ssa_const_prop</code></dt>
%% <dd>Performs sparse conditional constant propagation on the SSA
%% form on the Icode level.</dd>
%%
%% <dt><code>icode_ssa_struct_reuse</code></dt>
%% <dd>Tries to factor out identical tuple and list constructions
%% on the Icode level.</dd>
%%
%% <dt><code>icode_type</code></dt>
%% <dd>Simplifies the code by employing type analysis and propagation
%% on the Icode level.</dd>
%%
%% <dt><code>icode_range</code></dt>
%% <dd>Performs integer range analysis on the Icode level.</dd>
%%
%% <dt><code>pp_all</code></dt>
%% <dd>Equivalent to <code>[pp_beam, pp_icode, pp_rtl,
%% pp_native]</code>.</dd>
%%
%% <dt><code>pp_asm</code></dt>
%% <dd>Prints the assembly listing with addresses and bytecode.
%% Currently available for x86 only.</dd>
%%
%% <dt><code>pp_beam, {pp_beam, {file, File}}</code></dt>
%% <dd>Display the input Beam code to stdout or file.</dd>
%%
%% <dt><code>pp_icode, {pp_icode, {file, File}},
%% {pp_icode, {only, Functions}}</code></dt>
%% <dd>Pretty-print Icode intermediate code to stdout or file.</dd>
%%
%% <dt><code>pp_native, {pp_native, {file, File}},
%% {pp_native, {only, Functions}}</code></dt>
%% <dd>Pretty-print native code to stdout or file.</dd>
%%
%% <dt><code>pp_opt_icode, {pp_opt_icode, {file, File}},
%% {pp_opt_icode, {only, Functions}}</code></dt>
%% <dd>Pretty-print optimized Icode to stdout or file.</dd>
%%
%% <dt><code>pp_rtl, {pp_rtl, {file, File}},
%% {pp_rtl, {only, Functions}}</code></dt>
%% <dd>Pretty-print RTL intermediate code to stdout or file.</dd>
%%
%% <dt><code>regalloc</code></dt>
%% <dd>Select register allocation algorithm. Used as
%% <code>{regalloc, Method}</code>.
%%
%% <p><code>Method</code> is one of the following:
%% <ul>
%% <li><code>naive</code>: spills everything (for debugging and
%% testing only).</li>
%% <li><code>linear_scan</code>: fast compilation; not so good if
%% only few registers available.</li>
%% <li><code>graph_color</code>: slower, but gives better
%% performance.</li>
%% <li><code>coalescing</code>: tries hard to use registers; can be
%% very slow, but typically results in code with best performance.</li>
%% </ul></p></dd>
%%
%% <dt><code>remove_comments</code></dt>
%% <dd>Remove comments from intermediate code.</dd>
%%
%% <dt><code>rtl_ssa_const_prop</code></dt>
%% <dd>Performs sparse conditional constant propagation on the SSA
%% form on the RTL level. </dd>
%%
%% <dt><code>rtl_lcm</code></dt>
%% <dd>Lazy Code Motion on RTL.</dd>
%%
%% <dt><code>rtl_ssapre</code></dt>
%% <dd>Lazy Partial Redundancy Elimination on RTL (SSA level).</dd>
%%
%% <dt><code>use_indexing</code></dt>
%% <dd>Use indexing for multiple-choice branch selection.</dd>
%%
%% <dt><code>use_callgraph</code></dt>
%% <dd>Use a static call graph for determining the order in which
%% the functions of a module should be compiled (in reversed
%% topological sort order).</dd>
%% </dl></p>
%%
%% <h3>Debugging Options</h3>
%% (May require that some modules have been
%% compiled with the <code>DEBUG</code> flag.)
%% <dl>
%% <dt><code>rtl_show_translation</code></dt>
%% <dd>Prints each step in the translation from Icode to RTL</dd>
%% </dl>
%%
%% @end
%% ====================================================================
-module(hipe).
-export([c/1,
c/2,
f/1,
f/2,
compile/1,
compile/2,
compile/4,
compile_core/4,
file/1,
file/2,
get_llvm_version/0,
llvm_support_available/0,
load/1,
help/0,
help_hiper/0,
help_options/0,
help_option/1,
help_debug_options/0,
version/0,
erts_checksum/0]).
-ifndef(DEBUG).
-define(DEBUG,true).
-endif.
-include("hipe.hrl").
-include("../../compiler/src/beam_disasm.hrl").
-include("../rtl/hipe_literals.hrl").
%%-------------------------------------------------------------------
%% Basic type declaration for exported functions of the 'hipe' module
%%-------------------------------------------------------------------
-type mod() :: atom().
-type f_unit() :: mod() | binary().
-type ret_rtl() :: [_].
-type c_ret() :: {'ok', mod()} | {'error', term()} |
{'ok', mod(), ret_rtl()}. %% The last for debugging only
-type compile_file() :: atom() | string() | binary().
-type compile_ret() :: {hipe_architecture(), binary()} | list().
%%-------------------------------------------------------------------
-define(COMPILE_DEFAULTS, [o2]).
-define(DEFAULT_TIMEOUT, infinity).
%%-------------------------------------------------------------------
%% @spec load(Mod) -> {module, Mod} | {error, Reason}
%% Mod = mod()
%% Reason = term()
%%
%% @doc Like load/2, but tries to locate a BEAM file automatically.
%%
%% @see load/2
-spec load(Mod) -> {'module', Mod} | {'error', term()} when Mod :: mod().
load(Mod) ->
load(Mod, beam_file(Mod)).
%% @spec load(Mod, BeamFileName) -> {module, Mod} | {error, Reason}
%% Mod = mod()
%% Reason = term()
%% BeamFileName = string()
%% filename() = term()
%%
%% @type mod() = atom(). A module name.
%%
%% @doc User interface for loading code into memory. The code can be
%% given as a native code binary or as the file name of a BEAM file
%% which should contain a native-code chunk. If only the module name is
%% given (see <code>load/1</code>), the BEAM file is located
%% automatically.
%%
%% @see load/1
-spec load(Mod, string()) -> {'module', Mod} | {'error', term()}
when Mod :: mod().
load(Mod, BeamFileName) when is_list(BeamFileName) ->
Architecture = erlang:system_info(hipe_architecture),
ChunkName = hipe_unified_loader:chunk_name(Architecture),
case beam_lib:chunks(BeamFileName, [ChunkName]) of
{ok,{_,[{_,Bin}]}} when is_binary(Bin) -> do_load(Mod, Bin, BeamFileName);
Error -> {error, Error}
end.
%% @spec c(Name) -> {ok, Name} | {error, Reason}
%% Name = mod()
%% Reason = term()
%%
%% @equiv c(Name, [])
-spec c(mod()) -> c_ret().
c(Name) ->
c(Name, []).
%% @spec c(Name, options()) -> {ok, Name} | {error, Reason}
%% Name = mod()
%% options() = [option()]
%% option() = term()
%% Reason = term()
%%
%% @type fun() = atom(). A function identifier.
%%
%% @type arity() = integer(). A function arity; always nonnegative.
%%
%% @doc User-friendly native code compiler interface. Reads BEAM code
%% from the corresponding "Module<code>.beam</code>" file in the
%% system path, and compiles the whole module to native code. By
%% default, the compiled code is loaded directly. See above for
%% documentation of options.
%%
%% @see c/1
%% @see c/3
%% @see f/2
%% @see compile/2
-spec c(mod(), comp_options()) -> c_ret().
c(Name, Options) ->
c(Name, beam_file(Name), Options).
%% @spec c(Name, File, options()) -> {ok, Name} | {error, Reason}
%% Name = mod()
%% File = filename() | binary()
%% Reason = term()
%%
%% @doc Like <code>c/2</code>, but reads BEAM code from the specified
%% <code>File</code>.
%%
%% @see c/2
%% @see f/2
c(Name, File, Opts) ->
Opts1 = user_compile_opts(Opts),
case compile(Name, File, Opts1) of
{ok, Res} ->
case proplists:get_bool(to_rtl, Opts1) of
true -> {ok, Name, Res};
false -> {ok, Name}
end;
Other ->
Other
end.
%% @spec f(File) -> {ok, Name} | {error, Reason}
%% File = filename() | binary()
%% Name = mod()
%% Reason = term()
%%
%% @equiv f(File, [])
-spec f(f_unit()) -> {'ok', mod()} | {'error', term()}.
f(File) ->
f(File, []).
%% @spec f(File, options()) -> {ok, Name} | {error, Reason}
%% File = filename() | binary()
%% Name = mod()
%% Reason = term()
%%
%% @doc Like <code>c/3</code>, but takes the module name from the
%% specified <code>File</code>.
%%
%% @see c/3
-spec f(f_unit(), comp_options()) -> {'ok', mod()} | {'error', term()}.
f(File, Opts) ->
case file(File, user_compile_opts(Opts)) of
{ok, Name, _} ->
{ok, Name};
Other ->
Other
end.
-define(USER_DEFAULTS, [load]).
user_compile_opts(Opts) ->
Opts ++ ?USER_DEFAULTS.
%% @spec compile(Name) -> {ok, {Target,Binary}} | {error, Reason}
%% Name = mod()
%% Binary = binary()
%% Reason = term()
%%
%% @equiv compile(Name, [])
-spec compile(mod()) -> {'ok', compile_ret()} | {'error', term()}.
compile(Name) ->
compile(Name, []).
%% @spec compile(Name, options()) -> {ok, {Target,Binary}} | {error, Reason}
%% Name = mod()
%% Binary = binary()
%% Reason = term()
%%
%% @doc Direct compiler interface, for advanced use. This just
%% compiles the module, reading BEAM code from the corresponding
%% "Module<code>.beam</code>" file in the system path. Returns
%% <code>{ok, Binary}</code> if successful, or <code>{error,
%% Reason}</code> otherwise. By default, it does <em>not</em> load the
%% binary to memory (the <code>load</code> option can be used to
%% activate automatic loading). <code>File</code> can be either a file
%% name or a binary containing the BEAM code for the module.
%%
%% @see c/2
%% @see compile/1
%% @see compile/3
%% @see file/2
%% @see load/2
-spec compile(mod(), comp_options()) -> {'ok', compile_ret()} | {'error', _}.
compile(Name, Options) ->
compile(Name, beam_file(Name), Options).
-spec beam_file(mod()) -> string().
beam_file(Module) when is_atom(Module) ->
case code:which(Module) of
non_existing ->
?error_msg("Cannot find ~w.beam file.",[Module]),
?EXIT({cant_find_beam_file,Module});
File -> % string()
File
end.
%% @spec compile(Name, File, options()) ->
%% {ok, {Target, Binary}} | {error, Reason}
%% Name = mod()
%% File = filename() | binary()
%% Binary = binary()
%% Reason = term()
%%
%% @doc Like <code>compile/2</code>, but reads BEAM code from the
%% specified <code>File</code>.
%%
%% @see compile/2
-spec compile(mod(), compile_file(), comp_options()) ->
{'ok', compile_ret()} | {'error', term()}.
compile(Name, File, Opts0) when is_atom(Name) ->
Opts = expand_kt2(Opts0),
case proplists:get_value(core, Opts) of
true when is_binary(File) ->
?error_msg("Cannot get Core Erlang code from BEAM binary.",[]),
?EXIT({cant_compile_core_from_binary});
true ->
case filename:find_src(filename:rootname(File, ".beam")) of
{error, _} ->
?error_msg("Cannot find source code for ~p.", [File]),
?EXIT({cant_find_source_code});
{Source, CompOpts} ->
CoreOpts = [X || X = {core_transform, _} <- Opts],
%% io:format("Using: ~w\n", [CoreOpts]),
case compile:file(Source, CoreOpts ++ [to_core, binary|CompOpts]) of
{ok, _, Core} ->
compile_core(Name, Core, File, Opts);
Error ->
?error_msg("Error compiling ~p:\n~p.", [File, Error]),
?EXIT({cant_compile_source_code})
end
end;
{src_file, Source} ->
CoreOpts1 = [X || X = {core_transform, _} <- Opts],
CoreOpts2 = [report_errors, to_core, binary, {i,"../include"}|CoreOpts1],
%% io:format("Using: ~w\n", [CoreOpts2]),
case compile:file(Source, CoreOpts2) of
{ok, _, Core} ->
compile_core(Name, Core, File, Opts);
Error ->
?error_msg("Error compiling ~p:\n~p\n", [Source, Error]),
?EXIT({cant_compile_source_code, Error})
end;
Other when Other =:= false; Other =:= undefined ->
DisasmFun = fun (_) -> disasm(File) end,
IcodeFun = fun (Code, Opts_) ->
get_beam_icode(Name, Code, File, Opts_)
end,
run_compiler(Name, DisasmFun, IcodeFun, Opts)
end.
-spec compile_core(mod(), cerl:c_module(), compile_file(), comp_options()) ->
{'ok', compile_ret()} | {'error', term()}.
compile_core(Name, Core0, File, Opts) ->
Core = cerl:from_records(Core0),
compile(Name, Core, File, Opts).
%% @spec compile(Name, Core, File, options()) ->
%% {ok, {Target, Binary}} | {error, Reason}
%% Name = mod()
%% Core = coreErlang() | []
%% File = filename() | binary()
%% Binary = binary()
%% Reason = term()
%%
%% @doc Like <code>compile/3</code>, but unless <code>Core</code> is
%% <code>[]</code>, low-level code is generated from the given Core
%% Erlang code instead of from the BEAM code.
%%
%% <p>Note that only whole modules can be compiled with this
%% function.</p>
%%
%% @see compile/3
-spec compile(mod(), cerl:c_module() | [], compile_file(), comp_options()) ->
{'ok', compile_ret()} | {'error', term()}.
compile(Name, [], File, Opts) ->
compile(Name, File, Opts);
compile(Name, Core, File, Opts) when is_atom(Name) ->
DisasmFun = fun (_) -> {false, []} end,
IcodeFun = fun (_, Opts) ->
get_core_icode(Name, Core, File, Opts)
end,
run_compiler(Name, DisasmFun, IcodeFun, Opts).
%% @spec file(File) -> {ok, Name, {Target, Binary}} | {error, Reason}
%% File = filename() | binary()
%% Name = mod() | mfa()
%% Binary = binary()
%% Reason = term()
%%
%% @equiv file(File, [])
-spec file(Mod) -> {'ok', Mod, compile_ret()} | {'error', term()}
when Mod :: mod().
file(File) ->
file(File, []).
%% @spec file(File, options()) -> {ok, Name, {Target,Binary}} | {error, Reason}
%% File = filename()
%% Name = mod() | mfa()
%% Binary = binary()
%% Reason = term()
%%
%% @doc Like <code>compile/2</code>, but takes the module name from the
%% specified <code>File</code>. Returns both the name and the final
%% binary if successful.
%%
%% @see file/1
%% @see compile/2
-spec file(Mod, comp_options()) -> {'ok', Mod, compile_ret()}
| {'error', term()}
when Mod :: mod().
file(File, Options) when is_atom(File) ->
case beam_lib:info(File) of
L when is_list(L) ->
{module, Mod} = lists:keyfind(module, 1, L),
case compile(Mod, File, Options) of
{ok, CompRet} ->
{ok, Mod, CompRet};
Other ->
Other
end;
Error ->
Error
end.
%%-----------------------------------------------------------------------
%% The rest are internal functions:
%%-----------------------------------------------------------------------
%% @doc
%% Get BEAM code from `.beam' files or directly from binaries.
%% File is either a file name or a binary containing the BEAM code.
disasm(File) ->
case beam_disasm:file(File) of
#beam_file{labeled_exports = LabeledExports,
compile_info = CompInfo, code = BeamCode} ->
CompOpts = proplists:get_value(options, CompInfo, []),
HCompOpts = case lists:keyfind(hipe, 1, CompOpts) of
{hipe, L} when is_list(L) -> L;
{hipe, X} -> [X];
_ -> []
end,
Exports = fix_beam_exports(LabeledExports),
{{BeamCode, Exports}, HCompOpts};
{error, _Mod, Error} ->
io:format("~s\n", [beam_lib:format_error(Error)]),
?EXIT(no_beam_code)
end.
fix_beam_exports(BeamExports) ->
fix_beam_exports(BeamExports, []).
fix_beam_exports([{F,A,_}|BeamExports], Exports) ->
fix_beam_exports(BeamExports, [{F,A} | Exports]);
fix_beam_exports([], Exports) ->
Exports.
get_beam_icode(Mod, {BeamCode, Exports}, File, Options) ->
{ok, Icode} =
?option_time((catch {ok, hipe_beam_to_icode:module(BeamCode, Options)}),
"BEAM-to-Icode", Options),
BeamBin = get_beam_code(File),
{{Mod, Exports, Icode}, BeamBin}.
get_core_icode(Mod, Core, File, Options) ->
{ok, Icode} =
?option_time((catch {ok, cerl_to_icode:module(Core, Options)}),
"BEAM-to-Icode", Options),
NeedBeamCode = not proplists:get_bool(load, Options),
BeamBin =
case NeedBeamCode of
true -> [];
false -> get_beam_code(File)
end,
Exports = [cerl:var_name(V) || V <- cerl:module_exports(Core)],
{{Mod, Exports, Icode}, BeamBin}.
get_beam_code(Bin) when is_binary(Bin) -> Bin;
get_beam_code(FileName) ->
case erl_prim_loader:get_file(FileName) of
{ok, Bin, _} ->
Bin;
error ->
?EXIT(no_beam_file)
end.
%% ---------------------------------------------------------------------
%% All compilations go through this function. Note that it receives only
%% "basic" options. Name is just used for verbosity. The DisasmFun and
%% IcodeFun only collect the Icode; most of the real work is done in the
%% 'finalize' function.
run_compiler(Name, DisasmFun, IcodeFun, Opts0) ->
Opts = expand_basic_options(Opts0 ++ ?COMPILE_DEFAULTS),
?when_option(verbose, Opts, ?debug_msg("Compiling: ~p\n",[Name])),
?option_start_time("Compile", Opts),
Res = run_compiler_1(Name, DisasmFun, IcodeFun, Opts),
?option_stop_time("Compile", Opts),
Res.
run_compiler_1(Name, DisasmFun, IcodeFun, Options) ->
Parent = self(),
{trap_exit,TrapExit} = process_info(Parent, trap_exit),
%% Spawn a compilation process CompProc. In case this process gets
%% killed, the trap_exit flag is restored to that of the Parent process.
process_flag(trap_exit, true),
CompProc =
spawn_link(
fun () ->
try
%% Compiler process
set_architecture(Options),
pre_init(Options),
%% The full option expansion is not done
%% until the DisasmFun returns.
{Code, CompOpts} = DisasmFun(Options),
Opts0 = expand_options(Options ++ CompOpts,
get(hipe_target_arch)),
Opts =
case proplists:get_bool(to_llvm, Opts0) andalso
not llvm_support_available() of
true ->
?error_msg("No LLVM version 3.4 or greater "
"found in $PATH; aborting "
"native code compilation.\n", []),
?EXIT(cant_find_required_llvm_version);
false ->
Opts0
end,
check_options(Opts),
?when_option(verbose, Options,
?debug_msg("Options: ~p.\n",[Opts])),
init(Opts),
{Icode, WholeModule} = IcodeFun(Code, Opts),
CompRes = compile_finish(Icode, WholeModule, Opts),
compiler_return(CompRes, Parent)
catch error:Error ->
print_crash_message(Name, Error),
exit(Error)
end
end),
Timeout = case proplists:get_value(timeout, Options) of
N when is_integer(N), N >= 0 -> N;
undefined -> ?DEFAULT_TIMEOUT;
infinity -> infinity;
Other ->
?WARNING_MSG("Bad timeout value: ~P\n"
"Using default timeout limit.\n",
[Other, 5]),
?DEFAULT_TIMEOUT
end,
receive
{'EXIT', CompProc, normal} -> ok;
{'EXIT', CompProc, Reason} -> exit(Reason)
after Timeout ->
%% Kill the compilation process
exit(CompProc, kill),
receive {'EXIT', CompProc, _} -> ok end,
flush(),
?error_msg("ERROR: Compilation of ~w timed out.\n",[Name]),
exit(timed_out)
end,
Result = receive {CompProc, Res} -> Res end,
process_flag(trap_exit, TrapExit),
Result.
flush() ->
receive
_ -> flush()
after 0 ->
ok
end.
compiler_return(Res, Client) ->
Client ! {self(), Res}.
compile_finish({Mod, Exports, Icode}, WholeModule, Options) ->
Res = finalize(Icode, Mod, Exports, WholeModule, Options),
post(Res, Icode, Options).
%% -------------------------------------------------------------------------
%% finalize/5
%% compiles, assembles, and optionally loads a list of `{MFA, Icode}' pairs,
%% and returns `{ok, {TargetArch, Binary}}' or `{error, Reason, Stack}'.
finalize(OrigList, Mod, Exports, WholeModule, Opts) ->
List = icode_multret(OrigList, Mod, Opts, Exports),
{T1Compile,_} = erlang:statistics(runtime),
CompiledCode =
case proplists:get_value(use_callgraph, Opts) of
true ->
%% Compiling the functions bottom-up by using a call graph
CallGraph = hipe_icode_callgraph:construct(List),
OrdList = hipe_icode_callgraph:to_list(CallGraph),
finalize_fun(OrdList, Exports, Opts);
_ ->
%% Compiling the functions bottom-up by reversing the list
OrdList = lists:reverse(List),
finalize_fun(OrdList, Exports, Opts)
end,
{T2Compile,_} = erlang:statistics(runtime),
?when_option(verbose, Opts,
?debug_msg("Compiled ~p in ~.2f s\n",
[Mod,(T2Compile-T1Compile)/1000])),
case proplists:get_bool(to_rtl, Opts) of
true ->
{ok, CompiledCode};
false ->
Closures =
[MFA || {MFA, Icode} <- List,
hipe_icode:icode_is_closure(Icode)],
{T1,_} = erlang:statistics(runtime),
?when_option(verbose, Opts, ?debug_msg("Assembling ~w",[Mod])),
try assemble(CompiledCode, Closures, Exports, Opts) of
Bin ->
{T2,_} = erlang:statistics(runtime),
?when_option(verbose, Opts,
?debug_untagged_msg(" in ~.2f s\n",
[(T2-T1)/1000])),
{module,Mod} = maybe_load(Mod, Bin, WholeModule, Opts),
TargetArch = get(hipe_target_arch),
{ok, {TargetArch,Bin}}
catch
error:Error ->
{error,Error,erlang:get_stacktrace()}
end
end.
finalize_fun(MfaIcodeList, Exports, Opts) ->
case proplists:get_value(concurrent_comp, Opts) of
FalseVal when (FalseVal =:= undefined) orelse (FalseVal =:= false) ->
NoServers = #comp_servers{pp_server = none, range = none, type = none},
[finalize_fun_sequential(MFAIcode, Opts, NoServers)
|| {_MFA, _Icode} = MFAIcode <- MfaIcodeList];
TrueVal when (TrueVal =:= true) orelse (TrueVal =:= debug) ->
finalize_fun_concurrent(MfaIcodeList, Exports, Opts)
end.
finalize_fun_concurrent(MfaIcodeList, Exports, Opts) ->
Self = self(),
case MfaIcodeList of
[{{M,_,_},_}|_] ->
CallGraph = hipe_icode_callgraph:construct_callgraph(MfaIcodeList),
Exported = [{M, F, A} || {F, A} <- Exports],
Closures = [MFA || {MFA, Icode} <- MfaIcodeList,
hipe_icode:icode_is_closure(Icode)],
%% In principle, a function could both be exported and used as a
%% closure so make sure to add it only once in Escaping below
Escaping = ordsets:from_list(Exported ++ Closures),
NonEscaping = [MFA || {{_M, F, A} = MFA, Icode} <- MfaIcodeList,
not lists:member({F, A}, Exports),
not hipe_icode:icode_is_closure(Icode)],
TypeServerFun =
fun() ->
hipe_icode_coordinator:coordinate(CallGraph, Escaping,
NonEscaping, hipe_icode_type)
end,
TypeServer = spawn_link(TypeServerFun),
PPServerFun =
fun() ->
pp_server_start(Opts)
end,
PPServer = spawn_link(PPServerFun),
RangeServerFun =
fun() ->
hipe_icode_coordinator:coordinate(CallGraph, Escaping,
NonEscaping, hipe_icode_range)
end,
RangeServer = spawn_link(RangeServerFun),
Servers = #comp_servers{pp_server = PPServer,
range = RangeServer,
type = TypeServer},
CompFuns =
[fun() ->
set_architecture(Opts),
pre_init(Opts),
init(Opts),
Self ! finalize_fun_sequential(IcodeFun, Opts, Servers)
end || IcodeFun <- MfaIcodeList],
lists:foreach(fun (F) -> spawn_link(F) end, CompFuns),
Final = [receive Res when element(1, Res) =:= MFA -> Res end
|| {MFA, _} <- MfaIcodeList],
lists:foreach(fun (Pid) -> stop_and_wait(Pid) end,
[PPServer, TypeServer, RangeServer]),
Final;
[] ->
[]
end.
stop_and_wait(Pid) ->
Pid ! {stop, self()},
receive
_ -> ok
end.
finalize_fun_sequential({MFA, Icode}, Opts, Servers) ->
{T1, _} = erlang:statistics(runtime),
?when_option(verbose, Opts, ?debug_msg("Compiling ~w~n", [MFA])),
try hipe_main:compile_icode(MFA, Icode, Opts, Servers) of
{native, _Platform, {unprofiled, Code}} ->
{T2, _} = erlang:statistics(runtime),
?when_option(verbose, Opts,
?debug_msg("Compiled ~w in ~.2f s\n", [MFA,(T2-T1)/1000])),
{MFA, Code};
{rtl, LinearRtl} ->
{MFA, LinearRtl};
{llvm_binary, Binary} ->
{MFA, Binary}
catch
error:Error ->
?when_option(verbose, Opts, ?debug_untagged_msg("\n", [])),
print_crash_message(MFA, Error),
exit(Error)
end.
print_crash_message(What, Error) ->
StackFun = fun(_,_,_) -> false end,
FormatFun = fun (Term, _) -> io_lib:format("~p", [Term]) end,
StackTrace = lib:format_stacktrace(1, erlang:get_stacktrace(),
StackFun, FormatFun),
WhatS = case What of
{M,F,A} -> io_lib:format("~w:~w/~w", [M,F,A]);
Mod -> io_lib:format("~w", [Mod])
end,
?error_msg("INTERNAL ERROR~n"
"while compiling ~s~n"
"crash reason: ~p~n"
"~s~n",
[WhatS, Error, StackTrace]).
pp_server_start(Opts) ->
set_architecture(Opts),
garbage_collect(),
pp_server().
pp_server() ->
receive
{print, Fun} ->
Fun(), pp_server();
{stop, Pid} ->
Pid ! {done, self()};
_ ->
pp_server()
end.
icode_multret(List, Mod, Opts, Exports) ->
case proplists:get_bool(icode_multret, Opts) of
true ->
hipe_icode_mulret:mult_ret(List, Mod, Opts, Exports);
false ->
List
end.
maybe_load(Mod, Bin, WholeModule, Opts) ->
case proplists:get_bool(load, Opts) of
false ->
{module, Mod};
true ->
?when_option(verbose, Opts, ?debug_msg("Loading/linking\n", [])),
do_load(Mod, Bin, WholeModule)
end.
do_load(Mod, Bin, BeamBinOrPath) when is_binary(BeamBinOrPath);
is_list(BeamBinOrPath) ->
HostArch = get(hipe_host_arch),
TargetArch = get(hipe_target_arch),
%% Make sure we can do the load.
if HostArch =/= TargetArch ->
?EXIT({host_and_target_arch_differ, HostArch, TargetArch});
true -> ok
end,
case code:is_sticky(Mod) of
true ->
%% We unpack and repack the Beam binary as a workaround to
%% ensure that it is not compressed.
{ok, _, Chunks} = beam_lib:all_chunks(BeamBinOrPath),
{ok, Beam} = beam_lib:build_module(Chunks),
%% Don't purge or register sticky mods; just load native.
code:load_native_sticky(Mod, Bin, Beam);
false ->
%% Normal loading of a whole module
ChunkName = hipe_unified_loader:chunk_name(HostArch),
{ok, _, Chunks0} = beam_lib:all_chunks(BeamBinOrPath),
Chunks = [{ChunkName, Bin}|lists:keydelete(ChunkName, 1, Chunks0)],
{ok, BeamPlusNative} = beam_lib:build_module(Chunks),
code:load_binary(Mod, code:which(Mod), BeamPlusNative)
end.
assemble(CompiledCode, Closures, Exports, Options) ->
case proplists:get_bool(to_llvm, Options) of
false ->
case get(hipe_target_arch) of
ultrasparc ->
hipe_sparc_assemble:assemble(CompiledCode, Closures, Exports, Options);
powerpc ->
hipe_ppc_assemble:assemble(CompiledCode, Closures, Exports, Options);
ppc64 ->
hipe_ppc_assemble:assemble(CompiledCode, Closures, Exports, Options);
arm ->
hipe_arm_assemble:assemble(CompiledCode, Closures, Exports, Options);
x86 ->
hipe_x86_assemble:assemble(CompiledCode, Closures, Exports, Options);
amd64 ->
hipe_amd64_assemble:assemble(CompiledCode, Closures, Exports, Options);
Arch ->
?EXIT({executing_on_an_unsupported_architecture, Arch})
end;
true ->
%% Merge already compiled code (per MFA) to a single binary.
hipe_llvm_merge:finalize(CompiledCode, Closures, Exports)
end.
%% --------------------------------------------------------------------
%% Initialise host and target architectures. Target defaults to host,
%% but can be overridden by passing an option {target, Target}.
set_architecture(Options) ->
HostArch = erlang:system_info(hipe_architecture),
put(hipe_host_arch, HostArch),
put(hipe_target_arch, proplists:get_value(target, Options, HostArch)),
ok.
%% This sets up some globally accessed stuff that are needed by the
%% compiler process before it even gets the full list of options.
%% Therefore, this expands the current set of options for local use.
pre_init(Opts) ->
Options = expand_options(Opts, get(hipe_target_arch)),
%% Initialise some counters used for measurements and benchmarking. If
%% the option 'measure_regalloc' is given the compilation will return
%% a keylist with the counter values.
put(hipe_time,
case proplists:get_value(time, Options, false) of
true -> [hipe, hipe_main];
OptTime -> OptTime
end),
lists:foreach(fun (T) -> ?set_hipe_timer_val(T, 0) end, hipe_timers()),
lists:foreach(fun (Counter) ->
case Counter of
{CounterName, InitVal} -> put(CounterName, InitVal);
CounterName -> put(CounterName, 0)
end
end,
proplists:get_value(counters, Options, [])),
put(hipe_debug, proplists:get_bool(debug, Options)),
put(hipe_inline_fp, proplists:get_bool(inline_fp, Options)),
ok.
%% Prepare the compiler process by setting up variables which are
%% accessed globally. Options have been fully expanded at ths point.
init(_Options) ->
put(callersavetime, 0),
put(totalspill, {0,0}),
put(spilledtemps, 0),
put(pre_ra_instrs, 0),
put(post_ra_instrs, 0),
put(pre_ra_temps, 0),
put(post_ra_temps, 0),
put(noregs, 0),
put(bbs, 0),
ok.
%% --------------------------------------------------------------------
post(Res, Icode, Options) ->
TimerVals =
case proplists:get_value(timers, Options) of
Timers when is_list(Timers) ->
[{Timer, ?get_hipe_timer_val(Timer)} || Timer <- Timers];
_ -> []
end,
CounterVals =
case proplists:get_value(counters, Options) of
Counters when is_list(Counters) ->
[case Counter of
{CounterName, _InitVal} -> {CounterName, get(CounterName)};
CounterName -> {CounterName, get(CounterName)}
end
|| Counter <- Counters];
_ -> []
end,
Measures =
case proplists:get_bool(measure_regalloc, Options) of
true ->
get(); % return whole process dictionary list (simplest way...)
false -> []
end,
Info = TimerVals ++ CounterVals ++ Measures,
case proplists:get_bool(get_called_modules, Options) of
true ->
CalledMods = hipe_icode_callgraph:get_called_modules(Icode),
case Info of
[] ->
{Res, {called_modules, CalledMods}};
_ ->
{Res, {info, Info}, {called_modules, CalledMods}}
end;
false ->
case Info of
[] ->
Res;
_ ->
{Res, {info, Info}}
end
end.
%% --------------------------------------------------------------------
%% @doc Returns the current HiPE version as a string().
-spec version() -> nonempty_string().
version() ->
?VERSION_STRING().
%% @doc Returns checksum identifying the target runtime system.
-spec erts_checksum() -> integer().
erts_checksum() ->
?HIPE_ERTS_CHECKSUM.
%% --------------------------------------------------------------------
%% D O C U M E N T A T I O N - H E L P
%% --------------------------------------------------------------------
%% @doc Prints on-line documentation to the standard output.
-spec help() -> 'ok'.
help() ->
M =
"The HiPE Compiler (Version " ++ ?VERSION_STRING() ++ ")\n" ++
"\n" ++
" The normal way to native-compile Erlang code using HiPE is to\n" ++
" include `native' in the Erlang compiler options, as in:\n" ++
" 1> c(my_module, [native]).\n" ++
" Options to the HiPE compiler must then be passed as follows:\n" ++
" 1> c(my_module, [native,{hipe,Options}]).\n" ++
" Use `help_options()' for details.\n" ++
"\n" ++
" Utility functions:\n" ++
" help()\n" ++
" Prints this message.\n" ++
" help_options()\n" ++
" Prints a description of options recognized by the\n" ++
" HiPE compiler.\n" ++
" help_option(Option)\n" ++
" Prints a description of that option.\n" ++
" help_debug_options()\n" ++
" Prints a description of debug options.\n" ++
" version() ->\n" ++
" Returns the HiPE version as a string'.\n" ++
" erts_checksum() ->\n" ++
" Returns a checksum identifying the target runtime system.\n" ++
"\n" ++
" For HiPE developers only:\n" ++
" Use `help_hiper()' for information about HiPE's low-level interface\n",
io:put_chars(M),
ok.
-spec help_hiper() -> 'ok'.
help_hiper() ->
M =
" This interface is supposed to be used by HiPE-developers only!\n" ++
" Note that all options are specific to the HiPE compiler.\n" ++
" c(Name,Options)\n" ++
" Compiles the module or function Name and loads it\n" ++
" to memory. Name is an atom or a tuple {M,F,A}.\n" ++
" c(Name)\n" ++
" As above, but using only default options.\n" ++
" f(File,Options)\n" ++
" As c(Name,File,Options), but taking the module name\n" ++
" from File.\n" ++
" f(File)\n" ++
" As above, but using only default options.\n" ++
" compile(Name,Options)\n" ++
" Compiles the module or function Name to a binary.\n" ++
" By default, this does not load to memory.\n" ++
" compile(Name)\n" ++
" As above, but using only default options.\n" ++
" file(File,Options)\n" ++
" As compile(Name,File,Options), but taking the\n" ++
" module name from File.\n" ++
" file(File)\n" ++
" As above, but using only default options.\n" ++
" load(Module)\n" ++
" Loads the named module into memory.\n",
io:put_chars(M),
ok.
%% TODO: it should be possible to specify the target somehow when asking
%% for available options. Right now, you only see host machine options.
%% @doc Prints documentation about options to the standard output.
-spec help_options() -> 'ok'.
help_options() ->
HostArch = erlang:system_info(hipe_architecture),
O1 = expand_options([o1], HostArch),
O2 = expand_options([o2], HostArch),
O3 = expand_options([o3], HostArch),
io:format("HiPE Compiler Options\n" ++
" Boolean-valued options generally have corresponding " ++
"aliases `no_...',\n" ++
" and can also be specified as `{Option, true}' " ++
"or `{Option, false}.\n\n" ++
" General boolean options:\n" ++
" ~p.\n\n" ++
" Non-boolean options:\n" ++
" o#, where 0 =< # =< 3:\n" ++
" Select optimization level (the default is 2).\n\n" ++
" Further options can be found below; " ++
"use `hipe:help_option(Name)' for details.\n\n" ++
" Aliases:\n" ++
" pp_all = ~p,\n" ++
" pp_sparc = pp_native,\n" ++
" pp_x86 = pp_native,\n" ++
" pp_amd64 = pp_native,\n" ++
" pp_ppc = pp_native,\n" ++
" o0,\n" ++
" o1 = ~p,\n" ++
" o2 = ~p ++ o1,\n" ++
" o3 = ~p ++ o2.\n",
[ordsets:from_list([verbose, debug, time, load, pp_beam,
pp_icode, pp_rtl, pp_native, pp_asm,
timeout]),
expand_options([pp_all], HostArch),
O1 -- [o1],
(O2 -- O1) -- [o2],
(O3 -- O2) -- [o3]]),
ok.
%% Documentation of the individual options.
%% If you add an option, please add help-text here.
-spec option_text(atom()) -> string().
option_text('O') ->
"Specify optimization level. Used as o1, o2, o3.\n" ++
" At the moment levels 0 - 3 are implemented.\n" ++
" Aliases: 'O1', 'O2', O3'.";
option_text(caller_save_spill_restore) ->
"Activates caller save register spills and restores";
option_text(debug) ->
"Outputs internal debugging information during compilation";
option_text(icode_call_elim) ->
"Performs call elimination of BIFs that are side-effect free\n" ++
"only on some argument types";
option_text(icode_range) ->
"Performs integer range analysis on the Icode level";
option_text(icode_ssa_check) ->
"Checks whether Icode is on SSA form or not";
option_text(icode_ssa_copy_prop) ->
"Performs copy propagation on Icode SSA";
option_text(icode_ssa_const_prop) ->
"Performs sparse conditional constant propagation on Icode SSA";
option_text(icode_ssa_struct_reuse) ->
"Factors out common tuple and list constructions on Icode SSA";
option_text(icode_type) ->
"Performs type analysis on the Icode level\n" ++
"and then simplifies the code based on the results of this analysis";
option_text(load) ->
"Automatically load the produced native code into memory";
option_text(peephole) ->
"Enables peephole optimizations";
option_text(pmatch) ->
"Enables pattern matching compilation when compiling from Core;\n" ++
"has no effect when compiling from BEAM bytecode";
option_text(pp_asm) ->
"Displays assembly listing with addresses and bytecode\n" ++
"Currently available for x86 only";
option_text(pp_beam) ->
"Display the input BEAM code";
option_text(pp_icode) ->
"Display the intermediate HiPE-ICode";
option_text(pp_rtl) ->
"Display the intermediate HiPE-RTL code";
option_text(pp_rtl_lcm) ->
"Display the intermediate HiPE-RTL lazy code motion sets";
option_text(pp_rtl_ssapre) ->
"Display the intermediate HiPE-RTL A-SSAPRE sets";
option_text(pp_native) ->
"Display the generated (back-end specific) native code";
option_text(regalloc) ->
"Select register allocation algorithm. Used as {regalloc, METHOD}.\n" ++
" Currently available methods:\n" ++
" naive - spills everything (for debugging and testing)\n" ++
" linear_scan - fast; not so good if few registers available\n" ++
" graph_color - slow, but gives OK performance\n" ++
" coalescing - slower, tries hard to use registers\n" ++
" optimistic - another variant of a coalescing allocator";
option_text(remove_comments) ->
"Strip comments from intermediate code";
option_text(rtl_ssa) ->
"Perform SSA conversion on the RTL level -- default starting at O2";
option_text(rtl_ssa_const_prop) ->
"Performs sparse conditional constant propagation on RTL SSA";
option_text(rtl_lcm) ->
"Perform Lazy Code Motion on RTL";
option_text(rtl_ssapre) ->
"Perform A-SSAPRE on RTL";
option_text(time) ->
"Reports the compilation times for the different stages\n" ++
"of the compiler.\n" ++
" {time, Module} reports timings for the module Module.\n" ++
" {time, [M1, M2, M3]} reports timings for the specified modules.\n" ++
" {time, all} reports timings all modules.\n" ++
" time reports timings for the main module.\n";
option_text(timeout) ->
"Specify compilation time limit in ms. Used as {timeout, LIMIT}.\n" ++
" The limit must be a non-negative integer or the atom 'infinity'.\n" ++
" The current default limit is 15 minutes (900000 ms).";
option_text(use_indexing) ->
"Use indexing for multiple-choice branch selection";
option_text(use_callgraph) ->
"Compile the functions in a module according to a reversed topological\n" ++
"sorted order to gain more information when using a persistent lookup\n" ++
"table for storing intra-modular type information";
option_text(verbose) ->
"Output information about what is being done";
option_text(Opt) when is_atom(Opt) ->
"".
%% @doc Prints documentation about a specific option to the standard output.
-spec help_option(comp_option()) -> 'ok'.
help_option(Opt) ->
HostArch = erlang:system_info(hipe_architecture),
case expand_options([Opt], HostArch) of
[Opt] ->
Name = if is_atom(Opt) -> Opt;
tuple_size(Opt) =:= 2 -> element(1, Opt)
end,
case option_text(Name) of
"" ->
case lists:member(Name, opt_keys()) of
true ->
io:format("~w - Sorry, this option is not documented yet.\n",
[Name]);
_ ->
io:format("Unknown option ~p.\n", [Name])
end;
Txt ->
io:fwrite("~w - ~s\n", [Name, Txt])
end;
Opts ->
io:fwrite("This is an alias for: ~p.\n", [Opts])
end,
ok.
%% @doc Prints documentation about debugging options to the standard
%% output.
-spec help_debug_options() -> 'ok'.
help_debug_options() ->
io:format("HiPE compiler debug options:\n" ++
" Might require that some modules have been compiled " ++
"with the debug flag.\n" ++
" rtl_show_translation - Prints each step in the\n" ++
" translation from Icode to RTL\n",
[]),
ok.
hipe_timers() ->
[time_ra].
%% ____________________________________________________________________
%%
%% Option expansion
%% These are currently in use, but not documented:
%%
%% count_instrs:
%% icode_type:
%% icode_range:
%% {ls_order, Order}:
%% {regalloc, Algorithm}:
%% remove_comments
%% timeregalloc:
%% timers
%% use_indexing
%% Valid option keys. (Don't list aliases or negations - the check is
%% done after the options have been expanded to normal form.)
opt_keys() ->
[
binary_opt,
bitlevel_binaries,
caller_save_spill_restore,
concurrent_comp,
core,
core_transform,
counters,
count_instrs,
count_spills,
count_temps,
debug,
get_called_modules,
split_arith,
split_arith_unsafe,
icode_call_elim,
icode_inline_bifs,
icode_ssa_check,
icode_ssa_copy_prop,
icode_ssa_const_prop,
icode_ssa_struct_reuse,
icode_type,
icode_range,
icode_multret,
inline_fp,
ls_order,
load,
measure_regalloc,
peephole,
pmatch,
pp_asm,
pp_beam,
pp_icode,
pp_icode_ssa,
pp_icode_split_arith,
pp_opt_icode,
pp_range_icode,
pp_typed_icode,
pp_icode_liveness,
pp_native,
pp_rtl,
pp_rtl_liveness,
pp_rtl_ssa,
pp_rtl_lcm,
pp_rtl_ssapre,
pp_rtl_linear,
regalloc,
remove_comments,
rtl_ssa,
rtl_ssa_const_prop,
rtl_lcm,
rtl_ssapre,
rtl_show_translation,
spillmin_color,
target,
time,
timeout,
timeregalloc,
timers,
to_rtl,
to_llvm, % Use the LLVM backend for compilation.
llvm_save_temps, % Save the LLVM intermediate files in the current
% directory; useful for debugging.
llvm_llc, % Specify llc optimization-level: o1, o2, o3, undefined.
llvm_opt, % Specify opt optimization-level: o1, o2, o3, undefined.
use_indexing,
use_inline_atom_search,
use_callgraph,
use_clusters,
use_jumptable,
verbose,
%% verbose_spills,
x87].
%% Definitions:
o1_opts(TargetArch) ->
Common = [inline_fp, pmatch, peephole],
case TargetArch of
ultrasparc ->
Common;
powerpc ->
Common;
ppc64 ->
Common;
arm ->
Common -- [inline_fp]; % Pointless optimising for absent hardware
x86 ->
[x87 | Common]; % XXX: Temporary until x86 has sse2
amd64 ->
Common;
Arch ->
?EXIT({executing_on_an_unsupported_architecture,Arch})
end.
o2_opts(TargetArch) ->
Common = [icode_ssa_const_prop, icode_ssa_copy_prop, % icode_ssa_struct_reuse,
icode_type, icode_inline_bifs, icode_call_elim, rtl_lcm,
rtl_ssa, rtl_ssa_const_prop,
spillmin_color, use_indexing, remove_comments,
concurrent_comp, binary_opt | o1_opts(TargetArch)],
case TargetArch of
T when T =:= amd64 orelse T =:= ppc64 -> % 64-bit targets
[icode_range | Common];
_ -> % T \in [arm, powerpc, ultrasparc, x86]
Common % [rtl_ssapre | Common];
end.
o3_opts(TargetArch) ->
%% no point checking for target architecture since this is checked in 'o1'
[icode_range, {regalloc,coalescing} | o2_opts(TargetArch)].
%% Note that in general, the normal form for options should be positive.
%% This is a good programming convention, so that tests in the code say
%% "if 'x' ..." instead of "if not 'no_x' ...".
opt_negations() ->
[{no_binary_opt, binary_opt},
{no_bitlevel_binaries, bitlevel_binaries},
{no_core, core},
{no_debug, debug},
{no_get_called_modules, get_called_modules},
{no_split_arith, split_arith},
{no_concurrent_comp, concurrent_comp},
{no_icode_inline_bifs, icode_inline_bifs},
{no_icode_range, icode_range},
{no_icode_split_arith, icode_split_arith},
{no_icode_call_elim, icode_call_elim},
{no_icode_ssa_check, icode_ssa_check},
{no_icode_ssa_copy_prop, icode_ssa_copy_prop},
{no_icode_ssa_const_prop, icode_ssa_const_prop},
{no_icode_ssa_struct_reuse, icode_ssa_struct_reuse},
{no_icode_type, icode_type},
{no_inline_fp, inline_fp},
{no_load, load},
{no_peephole, peephole},
{no_pmatch, pmatch},
{no_pp_beam, pp_beam},
{no_pp_icode, pp_icode},
{no_pp_icode_ssa, pp_icode_ssa},
{no_pp_opt_icode, pp_opt_icode},
{no_pp_typed_icode, pp_typed_icode},
{no_pp_rtl, pp_rtl},
{no_pp_native, pp_native},
{no_pp_rtl_lcm, pp_rtl_lcm},
{no_pp_rtl_ssapre, pp_rtl_ssapre},
{no_remove_comments, remove_comments},
{no_rtl_ssa, rtl_ssa},
{no_rtl_ssa_const_prop, rtl_ssa_const_prop},
{no_rtl_lcm, rtl_lcm},
{no_rtl_ssapre, rtl_ssapre},
{no_rtl_show_translation, rtl_show_translation},
{no_time, time},
{no_use_callgraph, use_callgraph},
{no_use_clusters, use_clusters},
{no_use_inline_atom_search, use_inline_atom_search},
{no_use_indexing, use_indexing}].
%% Don't use negative forms in right-hand sides of aliases and expansions!
%% We only expand negations once, before the other expansions are done.
opt_aliases() ->
[{'O0', o0},
{'O1', o1},
{'O2', o2},
{'O3', o3},
{pp_sparc, pp_native},
{pp_x86, pp_native},
{pp_amd64, pp_native},
{pp_ppc, pp_native}].
opt_basic_expansions() ->
[{pp_all, [pp_beam, pp_icode, pp_rtl, pp_native]}].
opt_expansions(TargetArch) ->
[{o1, o1_opts(TargetArch)},
{o2, o2_opts(TargetArch)},
{o3, o3_opts(TargetArch)},
{to_llvm, llvm_opts(o3, TargetArch)},
{{to_llvm, o0}, llvm_opts(o0, TargetArch)},
{{to_llvm, o1}, llvm_opts(o1, TargetArch)},
{{to_llvm, o2}, llvm_opts(o2, TargetArch)},
{{to_llvm, o3}, llvm_opts(o3, TargetArch)},
{x87, [x87, inline_fp]},
{inline_fp, case TargetArch of %% XXX: Temporary until x86 has sse2
x86 -> [x87, inline_fp];
_ -> [inline_fp] end}].
llvm_opts(O, TargetArch) ->
Base = [to_llvm, {llvm_opt, O}, {llvm_llc, O}],
case TargetArch of
%% A llvm bug present in 3.4 through (at least) 3.8 miscompiles x86
%% functions that have floats are spilled to stack by clobbering the process
%% pointer (ebp) trying to realign the stack pointer.
x86 -> [no_inline_fp | Base];
_ -> Base
end.
%% This expands "basic" options, which may be tested early and cannot be
%% in conflict with options found in the source code.
-spec expand_basic_options(comp_options()) -> comp_options().
expand_basic_options(Opts) ->
proplists:normalize(Opts, [{negations, opt_negations()},
{aliases, opt_aliases()},
{expand, opt_basic_expansions()}]).
-spec expand_kt2(comp_options()) -> comp_options().
expand_kt2(Opts) ->
proplists:normalize(Opts, [{expand, [{kt2_type,
[{use_callgraph, fixpoint}, core,
{core_transform, cerl_typean}]}]}]).
%% Note that the given
%% list should contain the total set of options, since things like 'o2'
%% are expanded here. Basic expansions are processed here also, since
%% this function is called from the help functions.
-spec expand_options(comp_options(), hipe_architecture()) -> comp_options().
expand_options(Opts, TargetArch) ->
proplists:normalize(Opts, [{negations, opt_negations()},
{aliases, opt_aliases()},
{expand, opt_basic_expansions()},
{expand, opt_expansions(TargetArch)},
{negations, opt_negations()}]).
-spec check_options(comp_options()) -> 'ok'.
check_options(Opts) ->
Keys = ordsets:from_list(opt_keys()),
Used = ordsets:from_list(proplists:get_keys(Opts)),
case ordsets:subtract(Used, Keys) of
[] ->
ok;
L ->
?WARNING_MSG("Unknown options: ~p.\n", [L]),
ok
end.
-spec llvm_support_available() -> boolean().
llvm_support_available() ->
get_llvm_version() >= {3,4}.
-type llvm_version() :: {Major :: integer(), Minor :: integer()}.
-spec get_llvm_version() -> llvm_version() | {0, 0}.
get_llvm_version() ->
OptStr = os:cmd("opt -version"),
SubStr = "LLVM version ", N = length(SubStr),
case string:str(OptStr, SubStr) of
0 -> % No opt available
{0, 0};
S ->
case string:tokens(string:sub_string(OptStr, S + N), ".") of
[MajorS, MinorS | _] ->
case {string:to_integer(MajorS), string:to_integer(MinorS)} of
{{Major, ""}, {Minor, _}}
when is_integer(Major), is_integer(Minor) ->
{Major, Minor};
_ -> {0, 0}
end;
_ -> {0, 0} %XXX: Assumes no revision numbers in versioning
end
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
