1 // Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 use rustc
::session
::Session
;
12 use rustc
::session
::config
::{self, Input, OutputFilenames}
;
13 use rustc
::session
::search_paths
::PathKind
;
17 use rustc
::metadata
::creader
::CrateReader
;
18 use rustc
::middle
::{stability, ty, reachable}
;
19 use rustc
::middle
::dependency_format
;
21 use rustc
::plugin
::registry
::Registry
;
23 use rustc
::util
::common
::time
;
24 use rustc_borrowck
as borrowck
;
25 use rustc_resolve
as resolve
;
26 use rustc_trans
::back
::link
;
27 use rustc_trans
::back
::write
;
28 use rustc_trans
::trans
;
29 use rustc_typeck
as typeck
;
31 use super::Compilation
;
36 use std
::ffi
::{OsString, OsStr}
;
38 use std
::io
::{self, Write}
;
39 use std
::path
::{Path, PathBuf}
;
42 use syntax
::attr
::AttrMetaMethods
;
43 use syntax
::diagnostics
;
45 use syntax
::parse
::token
;
48 pub fn compile_input(sess
: Session
,
49 cfg
: ast
::CrateConfig
,
51 outdir
: &Option
<PathBuf
>,
52 output
: &Option
<PathBuf
>,
53 addl_plugins
: Option
<Vec
<String
>>,
54 control
: CompileController
) {
55 macro_rules
! controller_entry_point
{($point
: ident
, $tsess
: expr
, $make_state
: expr
) => ({
56 let state
= $make_state
;
57 (control
.$point
.callback
)(state
);
59 $tsess
.abort_if_errors();
60 if control
.$point
.stop
== Compilation
::Stop
{
65 // We need nested scopes here, because the intermediate results can keep
66 // large chunks of memory alive and we want to free them as soon as
67 // possible to keep the peak memory usage low
68 let (sess
, result
) = {
69 let (outputs
, expanded_crate
, id
) = {
70 let krate
= phase_1_parse_input(&sess
, cfg
, input
);
72 controller_entry_point
!(after_parse
,
74 CompileState
::state_after_parse(input
,
79 let outputs
= build_output_filenames(input
,
84 let id
= link
::find_crate_name(Some(&sess
),
88 = match phase_2_configure_and_expand(&sess
,
96 (outputs
, expanded_crate
, id
)
99 controller_entry_point
!(after_expand
,
101 CompileState
::state_after_expand(input
,
107 let mut forest
= ast_map
::Forest
::new(expanded_crate
);
108 let arenas
= ty
::CtxtArenas
::new();
109 let ast_map
= assign_node_ids_and_map(&sess
, &mut forest
);
111 write_out_deps(&sess
, input
, &outputs
, &id
[..]);
113 controller_entry_point
!(after_write_deps
,
115 CompileState
::state_after_write_deps(input
,
122 phase_3_run_analysis_passes(sess
,
126 control
.make_glob_map
,
130 let state
= CompileState
::state_after_analysis(input
,
136 (control
.after_analysis
.callback
)(state
);
138 tcx
.sess
.abort_if_errors();
139 if control
.after_analysis
.stop
== Compilation
::Stop
{
144 if log_enabled
!(::log
::INFO
) {
145 println
!("Pre-trans");
146 tcx
.print_debug_stats();
148 let trans
= phase_4_translate_to_llvm(tcx
, analysis
);
150 if log_enabled
!(::log
::INFO
) {
151 println
!("Post-trans");
152 tcx
.print_debug_stats();
155 // Discard interned strings as they are no longer required.
156 token
::get_ident_interner().clear();
162 let (outputs
, trans
) = if let Ok(out
) = result
{
168 phase_5_run_llvm_passes(&sess
, &trans
, &outputs
);
170 controller_entry_point
!(after_llvm
,
172 CompileState
::state_after_llvm(input
,
177 phase_6_link_output(&sess
, &trans
, &outputs
);
180 /// The name used for source code that doesn't originate in a file
181 /// (e.g. source from stdin or a string)
182 pub fn anon_src() -> String
{
186 pub fn source_name(input
: &Input
) -> String
{
188 // FIXME (#9639): This needs to handle non-utf8 paths
189 Input
::File(ref ifile
) => ifile
.to_str().unwrap().to_string(),
190 Input
::Str(_
) => anon_src()
194 /// CompileController is used to customise compilation, it allows compilation to
195 /// be stopped and/or to call arbitrary code at various points in compilation.
196 /// It also allows for various flags to be set to influence what information gets
197 /// collected during compilation.
199 /// This is a somewhat higher level controller than a Session - the Session
200 /// controls what happens in each phase, whereas the CompileController controls
201 /// whether a phase is run at all and whether other code (from outside the
202 /// the compiler) is run between phases.
204 /// Note that if compilation is set to stop and a callback is provided for a
205 /// given entry point, the callback is called before compilation is stopped.
207 /// Expect more entry points to be added in the future.
208 pub struct CompileController
<'a
> {
209 pub after_parse
: PhaseController
<'a
>,
210 pub after_expand
: PhaseController
<'a
>,
211 pub after_write_deps
: PhaseController
<'a
>,
212 pub after_analysis
: PhaseController
<'a
>,
213 pub after_llvm
: PhaseController
<'a
>,
215 pub make_glob_map
: resolve
::MakeGlobMap
,
218 impl<'a
> CompileController
<'a
> {
219 pub fn basic() -> CompileController
<'a
> {
221 after_parse
: PhaseController
::basic(),
222 after_expand
: PhaseController
::basic(),
223 after_write_deps
: PhaseController
::basic(),
224 after_analysis
: PhaseController
::basic(),
225 after_llvm
: PhaseController
::basic(),
226 make_glob_map
: resolve
::MakeGlobMap
::No
,
231 pub struct PhaseController
<'a
> {
232 pub stop
: Compilation
,
233 pub callback
: Box
<Fn(CompileState
) -> () + 'a
>,
236 impl<'a
> PhaseController
<'a
> {
237 pub fn basic() -> PhaseController
<'a
> {
239 stop
: Compilation
::Continue
,
240 callback
: box |_
| {}
,
245 /// State that is passed to a callback. What state is available depends on when
246 /// during compilation the callback is made. See the various constructor methods
247 /// (`state_*`) in the impl to see which data is provided for any given entry point.
248 pub struct CompileState
<'a
, 'ast
: 'a
, 'tcx
: 'a
> {
249 pub input
: &'a Input
,
250 pub session
: &'a Session
,
251 pub cfg
: Option
<&'a ast
::CrateConfig
>,
252 pub krate
: Option
<&'a ast
::Crate
>,
253 pub crate_name
: Option
<&'a
str>,
254 pub output_filenames
: Option
<&'a OutputFilenames
>,
255 pub out_dir
: Option
<&'a Path
>,
256 pub expanded_crate
: Option
<&'a ast
::Crate
>,
257 pub ast_map
: Option
<&'a ast_map
::Map
<'ast
>>,
258 pub analysis
: Option
<&'a ty
::CrateAnalysis
>,
259 pub tcx
: Option
<&'a ty
::ctxt
<'tcx
>>,
260 pub trans
: Option
<&'a trans
::CrateTranslation
>,
263 impl<'a
, 'ast
, 'tcx
> CompileState
<'a
, 'ast
, 'tcx
> {
264 fn empty(input
: &'a Input
,
265 session
: &'a Session
,
266 out_dir
: &'a Option
<PathBuf
>)
267 -> CompileState
<'a
, 'ast
, 'tcx
> {
271 out_dir
: out_dir
.as_ref().map(|s
| &**s
),
275 output_filenames
: None
,
276 expanded_crate
: None
,
284 fn state_after_parse(input
: &'a Input
,
285 session
: &'a Session
,
286 out_dir
: &'a Option
<PathBuf
>,
287 krate
: &'a ast
::Crate
)
288 -> CompileState
<'a
, 'ast
, 'tcx
> {
291 .. CompileState
::empty(input
, session
, out_dir
)
295 fn state_after_expand(input
: &'a Input
,
296 session
: &'a Session
,
297 out_dir
: &'a Option
<PathBuf
>,
298 expanded_crate
: &'a ast
::Crate
,
300 -> CompileState
<'a
, 'ast
, 'tcx
> {
302 crate_name
: Some(crate_name
),
303 expanded_crate
: Some(expanded_crate
),
304 .. CompileState
::empty(input
, session
, out_dir
)
308 fn state_after_write_deps(input
: &'a Input
,
309 session
: &'a Session
,
310 out_dir
: &'a Option
<PathBuf
>,
311 ast_map
: &'a ast_map
::Map
<'ast
>,
312 expanded_crate
: &'a ast
::Crate
,
314 -> CompileState
<'a
, 'ast
, 'tcx
> {
316 crate_name
: Some(crate_name
),
317 ast_map
: Some(ast_map
),
318 expanded_crate
: Some(expanded_crate
),
319 .. CompileState
::empty(input
, session
, out_dir
)
323 fn state_after_analysis(input
: &'a Input
,
324 session
: &'a Session
,
325 out_dir
: &'a Option
<PathBuf
>,
326 expanded_crate
: &'a ast
::Crate
,
327 analysis
: &'a ty
::CrateAnalysis
,
328 tcx
: &'a ty
::ctxt
<'tcx
>)
329 -> CompileState
<'a
, 'ast
, 'tcx
> {
331 analysis
: Some(analysis
),
333 expanded_crate
: Some(expanded_crate
),
334 .. CompileState
::empty(input
, session
, out_dir
)
339 fn state_after_llvm(input
: &'a Input
,
340 session
: &'a Session
,
341 out_dir
: &'a Option
<PathBuf
>,
342 trans
: &'a trans
::CrateTranslation
)
343 -> CompileState
<'a
, 'ast
, 'tcx
> {
346 .. CompileState
::empty(input
, session
, out_dir
)
351 pub fn phase_1_parse_input(sess
: &Session
, cfg
: ast
::CrateConfig
, input
: &Input
)
353 // These may be left in an incoherent state after a previous compile.
354 // `clear_tables` and `get_ident_interner().clear()` can be used to free
355 // memory, but they do not restore the initial state.
356 syntax
::ext
::mtwt
::reset_tables();
357 token
::reset_ident_interner();
359 let krate
= time(sess
.time_passes(), "parsing", (), |_
| {
361 Input
::File(ref file
) => {
362 parse
::parse_crate_from_file(&(*file
), cfg
.clone(), &sess
.parse_sess
)
364 Input
::Str(ref src
) => {
365 parse
::parse_crate_from_source_str(anon_src().to_string(),
373 if sess
.opts
.debugging_opts
.ast_json_noexpand
{
374 println
!("{}", json
::as_json(&krate
));
377 if let Some(ref s
) = sess
.opts
.show_span
{
378 syntax
::show_span
::run(sess
.diagnostic(), s
, &krate
);
384 // For continuing compilation after a parsed crate has been
387 /// Run the "early phases" of the compiler: initial `cfg` processing,
388 /// loading compiler plugins (including those from `addl_plugins`),
389 /// syntax expansion, secondary `cfg` expansion, synthesis of a test
390 /// harness if one is to be provided and injection of a dependency on the
391 /// standard library and prelude.
393 /// Returns `None` if we're aborting after handling -W help.
394 pub fn phase_2_configure_and_expand(sess
: &Session
,
395 mut krate
: ast
::Crate
,
397 addl_plugins
: Option
<Vec
<String
>>)
398 -> Option
<ast
::Crate
> {
399 let time_passes
= sess
.time_passes();
401 // strip before anything else because crate metadata may use #[cfg_attr]
402 // and so macros can depend on configuration variables, such as
404 // #[macro_use] #[cfg(foo)]
405 // mod bar { macro_rules! baz!(() => {{}}) }
407 // baz! should not use this definition unless foo is enabled.
409 krate
= time(time_passes
, "configuration 1", krate
, |krate
|
410 syntax
::config
::strip_unconfigured_items(sess
.diagnostic(), krate
));
412 *sess
.crate_types
.borrow_mut() =
413 collect_crate_types(sess
, &krate
.attrs
);
414 *sess
.crate_metadata
.borrow_mut() =
415 collect_crate_metadata(sess
, &krate
.attrs
);
417 time(time_passes
, "recursion limit", (), |_
| {
418 middle
::recursion_limit
::update_recursion_limit(sess
, &krate
);
421 time(time_passes
, "gated macro checking", (), |_
| {
423 syntax
::feature_gate
::check_crate_macros(sess
.codemap(),
424 &sess
.parse_sess
.span_diagnostic
,
427 // these need to be set "early" so that expansion sees `quote` if enabled.
428 *sess
.features
.borrow_mut() = features
;
429 sess
.abort_if_errors();
433 krate
= time(time_passes
, "crate injection", krate
, |krate
|
434 syntax
::std_inject
::maybe_inject_crates_ref(krate
,
435 sess
.opts
.alt_std_name
.clone()));
437 let macros
= time(time_passes
, "macro loading", (), |_
|
438 metadata
::macro_import
::read_macro_defs(sess
, &krate
));
440 let mut addl_plugins
= Some(addl_plugins
);
441 let registrars
= time(time_passes
, "plugin loading", (), |_
|
442 plugin
::load
::load_plugins(sess
, &krate
, addl_plugins
.take().unwrap()));
444 let mut registry
= Registry
::new(sess
, &krate
);
446 time(time_passes
, "plugin registration", registrars
, |registrars
| {
447 if sess
.features
.borrow().rustc_diagnostic_macros
{
448 registry
.register_macro("__diagnostic_used",
449 diagnostics
::plugin
::expand_diagnostic_used
);
450 registry
.register_macro("__register_diagnostic",
451 diagnostics
::plugin
::expand_register_diagnostic
);
452 registry
.register_macro("__build_diagnostic_array",
453 diagnostics
::plugin
::expand_build_diagnostic_array
);
456 for registrar
in registrars
{
457 registry
.args_hidden
= Some(registrar
.args
);
458 (registrar
.fun
)(&mut registry
);
462 let Registry
{ syntax_exts
, lint_passes
, lint_groups
,
463 llvm_passes
, attributes
, .. } = registry
;
466 let mut ls
= sess
.lint_store
.borrow_mut();
467 for pass
in lint_passes
{
468 ls
.register_pass(Some(sess
), true, pass
);
471 for (name
, to
) in lint_groups
{
472 ls
.register_group(Some(sess
), true, name
, to
);
475 *sess
.plugin_llvm_passes
.borrow_mut() = llvm_passes
;
476 *sess
.plugin_attributes
.borrow_mut() = attributes
.clone();
479 // Lint plugins are registered; now we can process command line flags.
480 if sess
.opts
.describe_lints
{
481 super::describe_lints(&*sess
.lint_store
.borrow(), true);
484 sess
.lint_store
.borrow_mut().process_command_line(sess
);
486 // Abort if there are errors from lint processing or a plugin registrar.
487 sess
.abort_if_errors();
489 krate
= time(time_passes
, "expansion", (krate
, macros
, syntax_exts
),
490 |(krate
, macros
, syntax_exts
)| {
491 // Windows dlls do not have rpaths, so they don't know how to find their
492 // dependencies. It's up to us to tell the system where to find all the
493 // dependent dlls. Note that this uses cfg!(windows) as opposed to
494 // targ_cfg because syntax extensions are always loaded for the host
495 // compiler, not for the target.
496 let mut _old_path
= OsString
::new();
498 _old_path
= env
::var_os("PATH").unwrap_or(_old_path
);
499 let mut new_path
= sess
.host_filesearch(PathKind
::All
)
500 .get_dylib_search_paths();
501 new_path
.extend(env
::split_paths(&_old_path
));
502 env
::set_var("PATH", &env
::join_paths(new_path
).unwrap());
504 let features
= sess
.features
.borrow();
505 let cfg
= syntax
::ext
::expand
::ExpansionConfig
{
506 crate_name
: crate_name
.to_string(),
507 features
: Some(&features
),
508 recursion_limit
: sess
.recursion_limit
.get(),
509 trace_mac
: sess
.opts
.debugging_opts
.trace_macros
,
511 let ret
= syntax
::ext
::expand
::expand_crate(&sess
.parse_sess
,
517 env
::set_var("PATH", &_old_path
);
523 // Needs to go *after* expansion to be able to check the results
524 // of macro expansion. This runs before #[cfg] to try to catch as
525 // much as possible (e.g. help the programmer avoid platform
526 // specific differences)
527 time(time_passes
, "complete gated feature checking 1", (), |_
| {
529 syntax
::feature_gate
::check_crate(sess
.codemap(),
530 &sess
.parse_sess
.span_diagnostic
,
532 sess
.opts
.unstable_features
);
533 *sess
.features
.borrow_mut() = features
;
534 sess
.abort_if_errors();
537 // JBC: make CFG processing part of expansion to avoid this problem:
539 // strip again, in case expansion added anything with a #[cfg].
540 krate
= time(time_passes
, "configuration 2", krate
, |krate
|
541 syntax
::config
::strip_unconfigured_items(sess
.diagnostic(), krate
));
543 krate
= time(time_passes
, "maybe building test harness", krate
, |krate
|
544 syntax
::test
::modify_for_testing(&sess
.parse_sess
,
549 krate
= time(time_passes
, "prelude injection", krate
, |krate
|
550 syntax
::std_inject
::maybe_inject_prelude(&sess
.parse_sess
, krate
));
552 time(time_passes
, "checking that all macro invocations are gone", &krate
, |krate
|
553 syntax
::ext
::expand
::check_for_macros(&sess
.parse_sess
, krate
));
555 // One final feature gating of the true AST that gets compiled
556 // later, to make sure we've got everything (e.g. configuration
557 // can insert new attributes via `cfg_attr`)
558 time(time_passes
, "complete gated feature checking 2", (), |_
| {
560 syntax
::feature_gate
::check_crate(sess
.codemap(),
561 &sess
.parse_sess
.span_diagnostic
,
563 sess
.opts
.unstable_features
);
564 *sess
.features
.borrow_mut() = features
;
565 sess
.abort_if_errors();
571 pub fn assign_node_ids_and_map
<'ast
>(sess
: &Session
,
572 forest
: &'ast
mut ast_map
::Forest
)
573 -> ast_map
::Map
<'ast
> {
574 struct NodeIdAssigner
<'a
> {
578 impl<'a
> ast_map
::FoldOps
for NodeIdAssigner
<'a
> {
579 fn new_id(&self, old_id
: ast
::NodeId
) -> ast
::NodeId
{
580 assert_eq
!(old_id
, ast
::DUMMY_NODE_ID
);
581 self.sess
.next_node_id()
585 let map
= time(sess
.time_passes(), "assigning node ids and indexing ast", forest
, |forest
|
586 ast_map
::map_crate(forest
, NodeIdAssigner { sess: sess }
));
588 if sess
.opts
.debugging_opts
.ast_json
{
589 println
!("{}", json
::as_json(map
.krate()));
595 /// Run the resolution, typechecking, region checking and other
596 /// miscellaneous analysis passes on the crate. Return various
597 /// structures carrying the results of the analysis.
598 pub fn phase_3_run_analysis_passes
<'tcx
, F
, R
>(sess
: Session
,
599 ast_map
: ast_map
::Map
<'tcx
>,
600 arenas
: &'tcx ty
::CtxtArenas
<'tcx
>,
602 make_glob_map
: resolve
::MakeGlobMap
,
605 where F
: for<'a
> FnOnce(&'a ty
::ctxt
<'tcx
>,
606 ty
::CrateAnalysis
) -> R
608 let time_passes
= sess
.time_passes();
609 let krate
= ast_map
.krate();
611 time(time_passes
, "external crate/lib resolution", (), |_
|
612 CrateReader
::new(&sess
).read_crates(krate
));
614 let lang_items
= time(time_passes
, "language item collection", (), |_
|
615 middle
::lang_items
::collect_language_items(krate
, &sess
));
617 let resolve
::CrateMap
{
625 time(time_passes
, "resolution", (),
626 |_
| resolve
::resolve_crate(&sess
, &ast_map
, make_glob_map
));
628 // Discard MTWT tables that aren't required past resolution.
629 syntax
::ext
::mtwt
::clear_tables();
631 let named_region_map
= time(time_passes
, "lifetime resolution", (),
632 |_
| middle
::resolve_lifetime
::krate(&sess
, krate
, &def_map
));
634 time(time_passes
, "looking for entry point", (),
635 |_
| middle
::entry
::find_entry_point(&sess
, &ast_map
));
637 sess
.plugin_registrar_fn
.set(
638 time(time_passes
, "looking for plugin registrar", (), |_
|
639 plugin
::build
::find_plugin_registrar(
640 sess
.diagnostic(), krate
)));
642 let region_map
= time(time_passes
, "region resolution", (), |_
|
643 middle
::region
::resolve_crate(&sess
, krate
));
645 time(time_passes
, "loop checking", (), |_
|
646 middle
::check_loop
::check_crate(&sess
, krate
));
648 time(time_passes
, "static item recursion checking", (), |_
|
649 middle
::check_static_recursion
::check_crate(&sess
, krate
, &def_map
, &ast_map
));
651 ty
::ctxt
::create_and_enter(sess
,
659 stability
::Index
::new(krate
),
662 // passes are timed inside typeck
663 typeck
::check_crate(tcx
, trait_map
);
665 time(time_passes
, "const checking", (), |_
|
666 middle
::check_const
::check_crate(tcx
));
668 let (exported_items
, public_items
) =
669 time(time_passes
, "privacy checking", (), |_
|
670 rustc_privacy
::check_crate(tcx
, &export_map
, external_exports
));
672 // Do not move this check past lint
673 time(time_passes
, "stability index", (), |_
|
674 tcx
.stability
.borrow_mut().build(tcx
, krate
, &public_items
));
676 time(time_passes
, "intrinsic checking", (), |_
|
677 middle
::intrinsicck
::check_crate(tcx
));
679 time(time_passes
, "effect checking", (), |_
|
680 middle
::effect
::check_crate(tcx
));
682 time(time_passes
, "match checking", (), |_
|
683 middle
::check_match
::check_crate(tcx
));
685 time(time_passes
, "liveness checking", (), |_
|
686 middle
::liveness
::check_crate(tcx
));
688 time(time_passes
, "borrow checking", (), |_
|
689 borrowck
::check_crate(tcx
));
691 time(time_passes
, "rvalue checking", (), |_
|
692 middle
::check_rvalues
::check_crate(tcx
, krate
));
694 // Avoid overwhelming user with errors if type checking failed.
695 // I'm not sure how helpful this is, to be honest, but it avoids a
696 // lot of annoying errors in the compile-fail tests (basically,
697 // lint warnings and so on -- kindck used to do this abort, but
698 // kindck is gone now). -nmatsakis
699 tcx
.sess
.abort_if_errors();
702 time(time_passes
, "reachability checking", (), |_
|
703 reachable
::find_reachable(tcx
, &exported_items
));
705 time(time_passes
, "death checking", (), |_
| {
706 middle
::dead
::check_crate(tcx
,
711 let ref lib_features_used
=
712 time(time_passes
, "stability checking", (), |_
|
713 stability
::check_unstable_api_usage(tcx
));
715 time(time_passes
, "unused lib feature checking", (), |_
|
716 stability
::check_unused_or_stable_features(
717 &tcx
.sess
, lib_features_used
));
719 time(time_passes
, "lint checking", (), |_
|
720 lint
::check_crate(tcx
, &exported_items
));
722 // The above three passes generate errors w/o aborting
723 tcx
.sess
.abort_if_errors();
725 f(tcx
, ty
::CrateAnalysis
{
726 export_map
: export_map
,
727 exported_items
: exported_items
,
728 public_items
: public_items
,
729 reachable
: reachable_map
,
736 /// Run the translation phase to LLVM, after which the AST and analysis can
738 pub fn phase_4_translate_to_llvm(tcx
: &ty
::ctxt
, analysis
: ty
::CrateAnalysis
)
739 -> trans
::CrateTranslation
{
740 let time_passes
= tcx
.sess
.time_passes();
742 time(time_passes
, "resolving dependency formats", (), |_
|
743 dependency_format
::calculate(tcx
));
745 // Option dance to work around the lack of stack once closures.
746 time(time_passes
, "translation", analysis
, |analysis
|
747 trans
::trans_crate(tcx
, analysis
))
750 /// Run LLVM itself, producing a bitcode file, assembly file or object file
751 /// as a side effect.
752 pub fn phase_5_run_llvm_passes(sess
: &Session
,
753 trans
: &trans
::CrateTranslation
,
754 outputs
: &OutputFilenames
) {
755 if sess
.opts
.cg
.no_integrated_as
{
756 let output_type
= config
::OutputTypeAssembly
;
758 time(sess
.time_passes(), "LLVM passes", (), |_
|
759 write
::run_passes(sess
, trans
, &[output_type
], outputs
));
761 write
::run_assembler(sess
, outputs
);
763 // Remove assembly source, unless --save-temps was specified
764 if !sess
.opts
.cg
.save_temps
{
765 fs
::remove_file(&outputs
.temp_path(config
::OutputTypeAssembly
)).unwrap();
768 time(sess
.time_passes(), "LLVM passes", (), |_
|
769 write
::run_passes(sess
,
771 &sess
.opts
.output_types
,
775 sess
.abort_if_errors();
778 /// Run the linker on any artifacts that resulted from the LLVM run.
779 /// This should produce either a finished executable or library.
780 pub fn phase_6_link_output(sess
: &Session
,
781 trans
: &trans
::CrateTranslation
,
782 outputs
: &OutputFilenames
) {
783 time(sess
.time_passes(), "linking", (), |_
|
784 link
::link_binary(sess
,
787 &trans
.link
.crate_name
));
790 fn escape_dep_filename(filename
: &str) -> String
{
791 // Apparently clang and gcc *only* escape spaces:
792 // http://llvm.org/klaus/clang/commit/9d50634cfc268ecc9a7250226dd5ca0e945240d4
793 filename
.replace(" ", "\\ ")
796 fn write_out_deps(sess
: &Session
,
798 outputs
: &OutputFilenames
,
801 let mut out_filenames
= Vec
::new();
802 for output_type
in &sess
.opts
.output_types
{
803 let file
= outputs
.path(*output_type
);
805 config
::OutputTypeExe
=> {
806 for output
in sess
.crate_types
.borrow().iter() {
807 let p
= link
::filename_for_input(sess
, *output
, id
,
809 out_filenames
.push(p
);
812 _
=> { out_filenames.push(file); }
816 // Write out dependency rules to the dep-info file if requested with
818 let deps_filename
= match sess
.opts
.write_dependency_info
{
819 // Use filename from --dep-file argument if given
820 (true, Some(ref filename
)) => filename
.clone(),
821 // Use default filename: crate source filename with extension replaced
823 (true, None
) => match *input
{
824 Input
::File(..) => outputs
.with_extension("d"),
826 sess
.warn("can not write --dep-info without a filename \
827 when compiling stdin.");
834 let result
= (|| -> io
::Result
<()> {
835 // Build a list of files used to compile the output and
836 // write Makefile-compatible dependency rules
837 let files
: Vec
<String
> = sess
.codemap().files
.borrow()
839 .filter(|fmap
| fmap
.is_real_file())
840 .filter(|fmap
| !fmap
.is_imported())
841 .map(|fmap
| escape_dep_filename(&fmap
.name
))
843 let mut file
= try
!(fs
::File
::create(&deps_filename
));
844 for path
in &out_filenames
{
845 try
!(write
!(&mut file
,
846 "{}: {}\n\n", path
.display(), files
.join(" ")));
854 sess
.fatal(&format
!("error writing dependencies to `{}`: {}",
855 deps_filename
.display(), e
));
860 pub fn collect_crate_types(session
: &Session
,
861 attrs
: &[ast
::Attribute
]) -> Vec
<config
::CrateType
> {
862 // Unconditionally collect crate types from attributes to make them used
863 let attr_types
: Vec
<config
::CrateType
> = attrs
.iter().filter_map(|a
| {
864 if a
.check_name("crate_type") {
865 match a
.value_str() {
866 Some(ref n
) if *n
== "rlib" => {
867 Some(config
::CrateTypeRlib
)
869 Some(ref n
) if *n
== "dylib" => {
870 Some(config
::CrateTypeDylib
)
872 Some(ref n
) if *n
== "lib" => {
873 Some(config
::default_lib_output())
875 Some(ref n
) if *n
== "staticlib" => {
876 Some(config
::CrateTypeStaticlib
)
878 Some(ref n
) if *n
== "bin" => Some(config
::CrateTypeExecutable
),
880 session
.add_lint(lint
::builtin
::UNKNOWN_CRATE_TYPES
,
883 "invalid `crate_type` \
888 session
.span_err(a
.span
, "`crate_type` requires a value");
889 session
.note("for example: `#![crate_type=\"lib\"]`");
898 // If we're generating a test executable, then ignore all other output
899 // styles at all other locations
900 if session
.opts
.test
{
901 return vec
!(config
::CrateTypeExecutable
)
904 // Only check command line flags if present. If no types are specified by
905 // command line, then reuse the empty `base` Vec to hold the types that
906 // will be found in crate attributes.
907 let mut base
= session
.opts
.crate_types
.clone();
909 base
.extend(attr_types
);
911 base
.push(link
::default_output_for_target(session
));
917 base
.into_iter().filter(|crate_type
| {
918 let res
= !link
::invalid_output_for_target(session
, *crate_type
);
921 session
.warn(&format
!("dropping unsupported crate type `{}` \
923 *crate_type
, session
.opts
.target_triple
));
930 pub fn collect_crate_metadata(session
: &Session
,
931 _attrs
: &[ast
::Attribute
]) -> Vec
<String
> {
932 session
.opts
.cg
.metadata
.clone()
935 pub fn build_output_filenames(input
: &Input
,
936 odir
: &Option
<PathBuf
>,
937 ofile
: &Option
<PathBuf
>,
938 attrs
: &[ast
::Attribute
],
943 // "-" as input file will cause the parser to read from stdin so we
944 // have to make up a name
945 // We want to toss everything after the final '.'
946 let dirpath
= match *odir
{
947 Some(ref d
) => d
.clone(),
948 None
=> PathBuf
::new()
951 // If a crate name is present, we use it as the link name
952 let stem
= sess
.opts
.crate_name
.clone().or_else(|| {
953 attr
::find_crate_name(attrs
).map(|n
| n
.to_string())
954 }).unwrap_or(input
.filestem());
957 out_directory
: dirpath
,
959 single_output_file
: None
,
960 extra
: sess
.opts
.cg
.extra_filename
.clone(),
964 Some(ref out_file
) => {
965 let ofile
= if sess
.opts
.output_types
.len() > 1 {
966 sess
.warn("ignoring specified output filename because multiple \
967 outputs were requested");
970 Some(out_file
.clone())
973 sess
.warn("ignoring --out-dir flag due to -o flag.");
976 let cur_dir
= Path
::new("");
979 out_directory
: out_file
.parent().unwrap_or(cur_dir
).to_path_buf(),
980 out_filestem
: out_file
.file_stem().unwrap_or(OsStr
::new(""))
981 .to_str().unwrap().to_string(),
982 single_output_file
: ofile
,
983 extra
: sess
.opts
.cg
.extra_filename
.clone(),