1 //! Contains infrastructure for configuring the compiler, including parsing
2 //! command line options.
6 use crate::session::{early_error, early_warn, Session};
7 use crate::session::search_paths::SearchPath;
9 use rustc_target::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, RelroLevel};
10 use rustc_target::spec::{Target, TargetTriple};
12 use crate::middle::cstore;
14 use syntax::ast::{self, IntTy, UintTy, MetaItemKind};
15 use syntax::source_map::{FileName, FilePathMapping};
16 use syntax::edition::{Edition, EDITION_NAME_LIST, DEFAULT_EDITION};
17 use syntax::parse::token;
19 use syntax::symbol::Symbol;
20 use syntax::feature_gate::UnstableFeatures;
22 use errors::{ColorConfig, FatalError, Handler};
25 use std::collections::{BTreeMap, BTreeSet};
26 use std::collections::btree_map::Iter as BTreeMapIter;
27 use std::collections::btree_map::Keys as BTreeMapKeysIter;
28 use std::collections::btree_map::Values as BTreeMapValuesIter;
30 use rustc_data_structures::fx::FxHashSet;
32 use std::hash::Hasher;
33 use std::collections::hash_map::DefaultHasher;
34 use std::iter::FromIterator;
35 use std::path::{Path, PathBuf};
43 #[derive(Clone, Hash, Debug)]
51 #[derive(Clone, Copy, Debug, PartialEq, Hash)]
61 impl_stable_hash_via_hash!(OptLevel);
63 /// This is what the `LtoCli` values get mapped to after resolving defaults and
64 /// and taking other command line options into account.
65 #[derive(Clone, Copy, PartialEq, Hash, Debug)]
67 /// Don't do any LTO whatsoever
70 /// Do a full crate graph LTO with ThinLTO
73 /// Do a local graph LTO with ThinLTO (only relevant for multiple codegen
77 /// Do a full crate graph LTO with "fat" LTO
81 /// The different settings that the `-C lto` flag can have.
82 #[derive(Clone, Copy, PartialEq, Hash, Debug)]
94 /// No `-C lto` flag passed
98 #[derive(Clone, PartialEq, Hash)]
99 pub enum LinkerPluginLto {
100 LinkerPlugin(PathBuf),
105 impl LinkerPluginLto {
106 pub fn enabled(&self) -> bool {
108 LinkerPluginLto::LinkerPlugin(_) |
109 LinkerPluginLto::LinkerPluginAuto => true,
110 LinkerPluginLto::Disabled => false,
115 #[derive(Clone, Copy, PartialEq, Hash)]
122 #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, PartialOrd, Ord, RustcEncodable, RustcDecodable)]
123 pub enum OutputType {
134 impl_stable_hash_via_hash!(OutputType);
137 fn is_compatible_with_codegen_units_and_single_output_file(&self) -> bool {
139 OutputType::Exe | OutputType::DepInfo => true,
141 | OutputType::Assembly
142 | OutputType::LlvmAssembly
145 | OutputType::Metadata => false,
149 fn shorthand(&self) -> &'static str {
151 OutputType::Bitcode => "llvm-bc",
152 OutputType::Assembly => "asm",
153 OutputType::LlvmAssembly => "llvm-ir",
154 OutputType::Mir => "mir",
155 OutputType::Object => "obj",
156 OutputType::Metadata => "metadata",
157 OutputType::Exe => "link",
158 OutputType::DepInfo => "dep-info",
162 fn from_shorthand(shorthand: &str) -> Option<Self> {
163 Some(match shorthand {
164 "asm" => OutputType::Assembly,
165 "llvm-ir" => OutputType::LlvmAssembly,
166 "mir" => OutputType::Mir,
167 "llvm-bc" => OutputType::Bitcode,
168 "obj" => OutputType::Object,
169 "metadata" => OutputType::Metadata,
170 "link" => OutputType::Exe,
171 "dep-info" => OutputType::DepInfo,
176 fn shorthands_display() -> String {
178 "`{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`",
179 OutputType::Bitcode.shorthand(),
180 OutputType::Assembly.shorthand(),
181 OutputType::LlvmAssembly.shorthand(),
182 OutputType::Mir.shorthand(),
183 OutputType::Object.shorthand(),
184 OutputType::Metadata.shorthand(),
185 OutputType::Exe.shorthand(),
186 OutputType::DepInfo.shorthand(),
190 pub fn extension(&self) -> &'static str {
192 OutputType::Bitcode => "bc",
193 OutputType::Assembly => "s",
194 OutputType::LlvmAssembly => "ll",
195 OutputType::Mir => "mir",
196 OutputType::Object => "o",
197 OutputType::Metadata => "rmeta",
198 OutputType::DepInfo => "d",
199 OutputType::Exe => "",
204 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
205 pub enum ErrorOutputType {
206 HumanReadable(ColorConfig),
211 impl Default for ErrorOutputType {
212 fn default() -> ErrorOutputType {
213 ErrorOutputType::HumanReadable(ColorConfig::Auto)
217 // Use tree-based collections to cheaply get a deterministic Hash implementation.
218 // DO NOT switch BTreeMap out for an unsorted container type! That would break
219 // dependency tracking for command-line arguments.
220 #[derive(Clone, Hash)]
221 pub struct OutputTypes(BTreeMap<OutputType, Option<PathBuf>>);
223 impl_stable_hash_via_hash!(OutputTypes);
226 pub fn new(entries: &[(OutputType, Option<PathBuf>)]) -> OutputTypes {
227 OutputTypes(BTreeMap::from_iter(
228 entries.iter().map(|&(k, ref v)| (k, v.clone())),
232 pub fn get(&self, key: &OutputType) -> Option<&Option<PathBuf>> {
236 pub fn contains_key(&self, key: &OutputType) -> bool {
237 self.0.contains_key(key)
240 pub fn keys<'a>(&'a self) -> BTreeMapKeysIter<'a, OutputType, Option<PathBuf>> {
244 pub fn values<'a>(&'a self) -> BTreeMapValuesIter<'a, OutputType, Option<PathBuf>> {
248 pub fn len(&self) -> usize {
252 // True if any of the output types require codegen or linking.
253 pub fn should_codegen(&self) -> bool {
254 self.0.keys().any(|k| match *k {
256 | OutputType::Assembly
257 | OutputType::LlvmAssembly
260 | OutputType::Exe => true,
261 OutputType::Metadata | OutputType::DepInfo => false,
266 // Use tree-based collections to cheaply get a deterministic Hash implementation.
267 // DO NOT switch BTreeMap or BTreeSet out for an unsorted container type! That
268 // would break dependency tracking for command-line arguments.
269 #[derive(Clone, Hash)]
270 pub struct Externs(BTreeMap<String, BTreeSet<Option<String>>>);
273 pub fn new(data: BTreeMap<String, BTreeSet<Option<String>>>) -> Externs {
277 pub fn get(&self, key: &str) -> Option<&BTreeSet<Option<String>>> {
281 pub fn iter<'a>(&'a self) -> BTreeMapIter<'a, String, BTreeSet<Option<String>>> {
286 macro_rules! hash_option {
287 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [UNTRACKED]) => ({});
288 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [TRACKED]) => ({
289 if $sub_hashes.insert(stringify!($opt_name),
290 $opt_expr as &dyn dep_tracking::DepTrackingHash).is_some() {
291 bug!("Duplicate key in CLI DepTrackingHash: {}", stringify!($opt_name))
297 [UNTRACKED_WITH_WARNING $warn_val:expr, $warn_text:expr, $error_format:expr]) => ({
298 if *$opt_expr == $warn_val {
299 early_warn($error_format, $warn_text)
304 macro_rules! top_level_options {
305 (pub struct Options { $(
306 $opt:ident : $t:ty [$dep_tracking_marker:ident $($warn_val:expr, $warn_text:expr)*],
314 pub fn dep_tracking_hash(&self) -> u64 {
315 let mut sub_hashes = BTreeMap::new();
320 [$dep_tracking_marker $($warn_val,
322 self.error_format)*]);
324 let mut hasher = DefaultHasher::new();
325 dep_tracking::stable_hash(sub_hashes,
334 // The top-level command-line options struct
336 // For each option, one has to specify how it behaves with regard to the
337 // dependency tracking system of incremental compilation. This is done via the
338 // square-bracketed directive after the field type. The options are:
341 // A change in the given field will cause the compiler to completely clear the
342 // incremental compilation cache before proceeding.
345 // Incremental compilation is not influenced by this option.
347 // [UNTRACKED_WITH_WARNING(val, warning)]
348 // The option is incompatible with incremental compilation in some way. If it
349 // has the value `val`, the string `warning` is emitted as a warning.
351 // If you add a new option to this struct or one of the sub-structs like
352 // CodegenOptions, think about how it influences incremental compilation. If in
353 // doubt, specify [TRACKED], which is always "correct" but might lead to
354 // unnecessary re-compilation.
357 // The crate config requested for the session, which may be combined
358 // with additional crate configurations during the compile process
359 crate_types: Vec<CrateType> [TRACKED],
360 optimize: OptLevel [TRACKED],
361 // Include the debug_assertions flag into dependency tracking, since it
362 // can influence whether overflow checks are done or not.
363 debug_assertions: bool [TRACKED],
364 debuginfo: DebugInfo [TRACKED],
365 lint_opts: Vec<(String, lint::Level)> [TRACKED],
366 lint_cap: Option<lint::Level> [TRACKED],
367 describe_lints: bool [UNTRACKED],
368 output_types: OutputTypes [TRACKED],
369 search_paths: Vec<SearchPath> [UNTRACKED],
370 libs: Vec<(String, Option<String>, Option<cstore::NativeLibraryKind>)> [TRACKED],
371 maybe_sysroot: Option<PathBuf> [TRACKED],
373 target_triple: TargetTriple [TRACKED],
375 test: bool [TRACKED],
376 error_format: ErrorOutputType [UNTRACKED],
378 // if Some, enable incremental compilation, using the given
379 // directory to store intermediate results
380 incremental: Option<PathBuf> [UNTRACKED],
382 debugging_opts: DebuggingOptions [TRACKED],
383 prints: Vec<PrintRequest> [UNTRACKED],
384 // Determines which borrow checker(s) to run. This is the parsed, sanitized
385 // version of `debugging_opts.borrowck`, which is just a plain string.
386 borrowck_mode: BorrowckMode [UNTRACKED],
387 cg: CodegenOptions [TRACKED],
388 externs: Externs [UNTRACKED],
389 crate_name: Option<String> [TRACKED],
390 // An optional name to use as the crate for std during std injection,
391 // written `extern crate name as std`. Defaults to `std`. Used by
392 // out-of-tree drivers.
393 alt_std_name: Option<String> [TRACKED],
394 // Indicates how the compiler should treat unstable features
395 unstable_features: UnstableFeatures [TRACKED],
397 // Indicates whether this run of the compiler is actually rustdoc. This
398 // is currently just a hack and will be removed eventually, so please
399 // try to not rely on this too much.
400 actually_rustdoc: bool [TRACKED],
402 // Specifications of codegen units / ThinLTO which are forced as a
403 // result of parsing command line options. These are not necessarily
404 // what rustc was invoked with, but massaged a bit to agree with
405 // commands like `--emit llvm-ir` which they're often incompatible with
406 // if we otherwise use the defaults of rustc.
407 cli_forced_codegen_units: Option<usize> [UNTRACKED],
408 cli_forced_thinlto_off: bool [UNTRACKED],
410 // Remap source path prefixes in all output (messages, object files, debug, etc)
411 remap_path_prefix: Vec<(PathBuf, PathBuf)> [UNTRACKED],
413 edition: Edition [TRACKED],
415 // The list of crates to consider private when
416 // checking leaked private dependency types in public interfaces
417 extern_private: Vec<String> [TRACKED],
421 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
422 pub enum PrintRequest {
437 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
438 pub enum BorrowckMode {
446 /// Should we run the MIR-based borrow check, but also fall back
447 /// on the AST borrow check if the MIR-based one errors.
448 pub fn migrate(self) -> bool {
450 BorrowckMode::Ast => false,
451 BorrowckMode::Compare => false,
452 BorrowckMode::Mir => false,
453 BorrowckMode::Migrate => true,
457 /// Should we emit the AST-based borrow checker errors?
458 pub fn use_ast(self) -> bool {
460 BorrowckMode::Ast => true,
461 BorrowckMode::Compare => true,
462 BorrowckMode::Mir => false,
463 BorrowckMode::Migrate => false,
466 /// Should we emit the MIR-based borrow checker errors?
467 pub fn use_mir(self) -> bool {
469 BorrowckMode::Ast => false,
470 BorrowckMode::Compare => true,
471 BorrowckMode::Mir => true,
472 BorrowckMode::Migrate => true,
478 /// Loads source from file
481 /// String that is shown in place of a filename
483 /// Anonymous source string
489 pub fn filestem(&self) -> &str {
491 Input::File(ref ifile) => ifile.file_stem().unwrap().to_str().unwrap(),
492 Input::Str { .. } => "rust_out",
496 pub fn get_input(&mut self) -> Option<&mut String> {
498 Input::File(_) => None,
499 Input::Str { ref mut input, .. } => Some(input),
503 pub fn source_name(&self) -> FileName {
505 Input::File(ref ifile) => ifile.clone().into(),
506 Input::Str { ref name, .. } => name.clone(),
511 #[derive(Clone, Hash)]
512 pub struct OutputFilenames {
513 pub out_directory: PathBuf,
514 pub out_filestem: String,
515 pub single_output_file: Option<PathBuf>,
517 pub outputs: OutputTypes,
520 impl_stable_hash_via_hash!(OutputFilenames);
522 pub const RUST_CGU_EXT: &str = "rcgu";
524 impl OutputFilenames {
525 pub fn path(&self, flavor: OutputType) -> PathBuf {
528 .and_then(|p| p.to_owned())
529 .or_else(|| self.single_output_file.clone())
530 .unwrap_or_else(|| self.temp_path(flavor, None))
533 /// Gets the path where a compilation artifact of the given type for the
534 /// given codegen unit should be placed on disk. If codegen_unit_name is
535 /// None, a path distinct from those of any codegen unit will be generated.
536 pub fn temp_path(&self, flavor: OutputType, codegen_unit_name: Option<&str>) -> PathBuf {
537 let extension = flavor.extension();
538 self.temp_path_ext(extension, codegen_unit_name)
541 /// Like temp_path, but also supports things where there is no corresponding
542 /// OutputType, like noopt-bitcode or lto-bitcode.
543 pub fn temp_path_ext(&self, ext: &str, codegen_unit_name: Option<&str>) -> PathBuf {
544 let base = self.out_directory.join(&self.filestem());
546 let mut extension = String::new();
548 if let Some(codegen_unit_name) = codegen_unit_name {
549 extension.push_str(codegen_unit_name);
553 if !extension.is_empty() {
554 extension.push_str(".");
555 extension.push_str(RUST_CGU_EXT);
556 extension.push_str(".");
559 extension.push_str(ext);
562 let path = base.with_extension(&extension[..]);
566 pub fn with_extension(&self, extension: &str) -> PathBuf {
568 .join(&self.filestem())
569 .with_extension(extension)
572 pub fn filestem(&self) -> String {
573 format!("{}{}", self.out_filestem, self.extra)
577 pub fn host_triple() -> &'static str {
578 // Get the host triple out of the build environment. This ensures that our
579 // idea of the host triple is the same as for the set of libraries we've
580 // actually built. We can't just take LLVM's host triple because they
581 // normalize all ix86 architectures to i386.
583 // Instead of grabbing the host triple (for the current host), we grab (at
584 // compile time) the target triple that this rustc is built with and
585 // calling that (at runtime) the host triple.
586 (option_env!("CFG_COMPILER_HOST_TRIPLE")).expect("CFG_COMPILER_HOST_TRIPLE")
589 impl Default for Options {
590 fn default() -> Options {
592 crate_types: Vec::new(),
593 optimize: OptLevel::No,
594 debuginfo: DebugInfo::None,
595 lint_opts: Vec::new(),
597 describe_lints: false,
598 output_types: OutputTypes(BTreeMap::new()),
599 search_paths: vec![],
601 target_triple: TargetTriple::from_triple(host_triple()),
604 debugging_opts: basic_debugging_options(),
606 borrowck_mode: BorrowckMode::Ast,
607 cg: basic_codegen_options(),
608 error_format: ErrorOutputType::default(),
609 externs: Externs(BTreeMap::new()),
613 unstable_features: UnstableFeatures::Disallow,
614 debug_assertions: true,
615 actually_rustdoc: false,
616 cli_forced_codegen_units: None,
617 cli_forced_thinlto_off: false,
618 remap_path_prefix: Vec::new(),
619 edition: DEFAULT_EDITION,
620 extern_private: Vec::new()
626 /// Returns `true` if there is a reason to build the dep graph.
627 pub fn build_dep_graph(&self) -> bool {
628 self.incremental.is_some() || self.debugging_opts.dump_dep_graph
629 || self.debugging_opts.query_dep_graph
633 pub fn enable_dep_node_debug_strs(&self) -> bool {
634 cfg!(debug_assertions)
635 && (self.debugging_opts.query_dep_graph || self.debugging_opts.incremental_info)
638 pub fn file_path_mapping(&self) -> FilePathMapping {
639 FilePathMapping::new(self.remap_path_prefix.clone())
642 /// Returns `true` if there will be an output file generated
643 pub fn will_create_output_file(&self) -> bool {
644 !self.debugging_opts.parse_only && // The file is just being parsed
645 !self.debugging_opts.ls // The file is just being queried
649 pub fn share_generics(&self) -> bool {
650 match self.debugging_opts.share_generics {
651 Some(setting) => setting,
653 match self.optimize {
657 OptLevel::SizeMin => true,
659 OptLevel::Aggressive => false,
666 // The type of entry function, so users can have their own entry functions
667 #[derive(Copy, Clone, PartialEq, Hash, Debug)]
668 pub enum EntryFnType {
673 impl_stable_hash_via_hash!(EntryFnType);
675 #[derive(Copy, PartialEq, PartialOrd, Clone, Ord, Eq, Hash, Debug)]
685 #[derive(Clone, Hash)]
692 pub fn is_empty(&self) -> bool {
694 Passes::Some(ref v) => v.is_empty(),
695 Passes::All => false,
700 /// Declare a macro that will define all CodegenOptions/DebuggingOptions fields and parsers all
701 /// at once. The goal of this macro is to define an interface that can be
702 /// programmatically used by the option parser in order to initialize the struct
703 /// without hardcoding field names all over the place.
705 /// The goal is to invoke this macro once with the correct fields, and then this
706 /// macro generates all necessary code. The main gotcha of this macro is the
707 /// cgsetters module which is a bunch of generated code to parse an option into
708 /// its respective field in the struct. There are a few hand-written parsers for
709 /// parsing specific types of values in this module.
710 macro_rules! options {
711 ($struct_name:ident, $setter_name:ident, $defaultfn:ident,
712 $buildfn:ident, $prefix:expr, $outputname:expr,
713 $stat:ident, $mod_desc:ident, $mod_set:ident,
714 $($opt:ident : $t:ty = (
717 [$dep_tracking_marker:ident $(($dep_warn_val:expr, $dep_warn_text:expr))*],
722 pub struct $struct_name { $(pub $opt: $t),* }
724 pub fn $defaultfn() -> $struct_name {
725 $struct_name { $($opt: $init),* }
728 pub fn $buildfn(matches: &getopts::Matches, error_format: ErrorOutputType) -> $struct_name
730 let mut op = $defaultfn();
731 for option in matches.opt_strs($prefix) {
732 let mut iter = option.splitn(2, '=');
733 let key = iter.next().unwrap();
734 let value = iter.next();
735 let option_to_lookup = key.replace("-", "_");
736 let mut found = false;
737 for &(candidate, setter, opt_type_desc, _) in $stat {
738 if option_to_lookup != candidate { continue }
739 if !setter(&mut op, value) {
740 match (value, opt_type_desc) {
741 (Some(..), None) => {
742 early_error(error_format, &format!("{} option `{}` takes no \
743 value", $outputname, key))
745 (None, Some(type_desc)) => {
746 early_error(error_format, &format!("{0} option `{1}` requires \
747 {2} ({3} {1}=<value>)",
751 (Some(value), Some(type_desc)) => {
752 early_error(error_format, &format!("incorrect value `{}` for {} \
753 option `{}` - {} was expected",
757 (None, None) => bug!()
764 early_error(error_format, &format!("unknown {} option: `{}`",
771 impl<'a> dep_tracking::DepTrackingHash for $struct_name {
772 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
773 let mut sub_hashes = BTreeMap::new();
778 [$dep_tracking_marker $($dep_warn_val,
782 dep_tracking::stable_hash(sub_hashes, hasher, error_format);
786 pub type $setter_name = fn(&mut $struct_name, v: Option<&str>) -> bool;
787 pub const $stat: &[(&str, $setter_name, Option<&str>, &str)] =
788 &[ $( (stringify!($opt), $mod_set::$opt, $mod_desc::$parse, $desc) ),* ];
790 #[allow(non_upper_case_globals, dead_code)]
792 pub const parse_bool: Option<&str> = None;
793 pub const parse_opt_bool: Option<&str> =
794 Some("one of: `y`, `yes`, `on`, `n`, `no`, or `off`");
795 pub const parse_string: Option<&str> = Some("a string");
796 pub const parse_string_push: Option<&str> = Some("a string");
797 pub const parse_pathbuf_push: Option<&str> = Some("a path");
798 pub const parse_opt_string: Option<&str> = Some("a string");
799 pub const parse_opt_pathbuf: Option<&str> = Some("a path");
800 pub const parse_list: Option<&str> = Some("a space-separated list of strings");
801 pub const parse_opt_list: Option<&str> = Some("a space-separated list of strings");
802 pub const parse_uint: Option<&str> = Some("a number");
803 pub const parse_passes: Option<&str> =
804 Some("a space-separated list of passes, or `all`");
805 pub const parse_opt_uint: Option<&str> =
807 pub const parse_panic_strategy: Option<&str> =
808 Some("either `unwind` or `abort`");
809 pub const parse_relro_level: Option<&str> =
810 Some("one of: `full`, `partial`, or `off`");
811 pub const parse_sanitizer: Option<&str> =
812 Some("one of: `address`, `leak`, `memory` or `thread`");
813 pub const parse_linker_flavor: Option<&str> =
814 Some(::rustc_target::spec::LinkerFlavor::one_of());
815 pub const parse_optimization_fuel: Option<&str> =
816 Some("crate=integer");
817 pub const parse_unpretty: Option<&str> =
818 Some("`string` or `string=string`");
819 pub const parse_lto: Option<&str> =
820 Some("either a boolean (`yes`, `no`, `on`, `off`, etc), `thin`, \
822 pub const parse_linker_plugin_lto: Option<&str> =
823 Some("either a boolean (`yes`, `no`, `on`, `off`, etc), \
824 or the path to the linker plugin");
825 pub const parse_merge_functions: Option<&str> =
826 Some("one of: `disabled`, `trampolines`, or `aliases`");
831 use super::{$struct_name, Passes, Sanitizer, LtoCli, LinkerPluginLto};
832 use rustc_target::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, RelroLevel};
833 use std::path::PathBuf;
834 use std::str::FromStr;
837 pub fn $opt(cg: &mut $struct_name, v: Option<&str>) -> bool {
838 $parse(&mut cg.$opt, v)
842 fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool {
845 None => { *slot = true; true }
849 fn parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool {
853 "n" | "no" | "off" => {
856 "y" | "yes" | "on" => {
859 _ => { return false; }
864 None => { *slot = Some(true); true }
868 fn parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool {
870 Some(s) => { *slot = Some(s.to_string()); true },
875 fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, v: Option<&str>) -> bool {
877 Some(s) => { *slot = Some(PathBuf::from(s)); true },
882 fn parse_string(slot: &mut String, v: Option<&str>) -> bool {
884 Some(s) => { *slot = s.to_string(); true },
889 fn parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool {
891 Some(s) => { slot.push(s.to_string()); true },
896 fn parse_pathbuf_push(slot: &mut Vec<PathBuf>, v: Option<&str>) -> bool {
898 Some(s) => { slot.push(PathBuf::from(s)); true },
903 fn parse_list(slot: &mut Vec<String>, v: Option<&str>)
907 slot.extend(s.split_whitespace().map(|s| s.to_string()));
914 fn parse_opt_list(slot: &mut Option<Vec<String>>, v: Option<&str>)
918 let v = s.split_whitespace().map(|s| s.to_string()).collect();
926 fn parse_uint(slot: &mut usize, v: Option<&str>) -> bool {
927 match v.and_then(|s| s.parse().ok()) {
928 Some(i) => { *slot = i; true },
933 fn parse_opt_uint(slot: &mut Option<usize>, v: Option<&str>) -> bool {
935 Some(s) => { *slot = s.parse().ok(); slot.is_some() }
936 None => { *slot = None; false }
940 fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
947 let mut passes = vec![];
948 if parse_list(&mut passes, v) {
949 *slot = Passes::Some(passes);
958 fn parse_panic_strategy(slot: &mut Option<PanicStrategy>, v: Option<&str>) -> bool {
960 Some("unwind") => *slot = Some(PanicStrategy::Unwind),
961 Some("abort") => *slot = Some(PanicStrategy::Abort),
967 fn parse_relro_level(slot: &mut Option<RelroLevel>, v: Option<&str>) -> bool {
970 match s.parse::<RelroLevel>() {
971 Ok(level) => *slot = Some(level),
980 fn parse_sanitizer(slote: &mut Option<Sanitizer>, v: Option<&str>) -> bool {
982 Some("address") => *slote = Some(Sanitizer::Address),
983 Some("leak") => *slote = Some(Sanitizer::Leak),
984 Some("memory") => *slote = Some(Sanitizer::Memory),
985 Some("thread") => *slote = Some(Sanitizer::Thread),
991 fn parse_linker_flavor(slote: &mut Option<LinkerFlavor>, v: Option<&str>) -> bool {
992 match v.and_then(LinkerFlavor::from_str) {
993 Some(lf) => *slote = Some(lf),
999 fn parse_optimization_fuel(slot: &mut Option<(String, u64)>, v: Option<&str>) -> bool {
1003 let parts = s.split('=').collect::<Vec<_>>();
1004 if parts.len() != 2 { return false; }
1005 let crate_name = parts[0].to_string();
1006 let fuel = parts[1].parse::<u64>();
1007 if fuel.is_err() { return false; }
1008 *slot = Some((crate_name, fuel.unwrap()));
1014 fn parse_unpretty(slot: &mut Option<String>, v: Option<&str>) -> bool {
1017 Some(s) if s.split('=').count() <= 2 => {
1018 *slot = Some(s.to_string());
1025 fn parse_lto(slot: &mut LtoCli, v: Option<&str>) -> bool {
1027 let mut bool_arg = None;
1028 if parse_opt_bool(&mut bool_arg, v) {
1029 *slot = if bool_arg.unwrap() {
1039 None => LtoCli::NoParam,
1040 Some("thin") => LtoCli::Thin,
1041 Some("fat") => LtoCli::Fat,
1042 Some(_) => return false,
1047 fn parse_linker_plugin_lto(slot: &mut LinkerPluginLto, v: Option<&str>) -> bool {
1049 let mut bool_arg = None;
1050 if parse_opt_bool(&mut bool_arg, v) {
1051 *slot = if bool_arg.unwrap() {
1052 LinkerPluginLto::LinkerPluginAuto
1054 LinkerPluginLto::Disabled
1061 None => LinkerPluginLto::LinkerPluginAuto,
1062 Some(path) => LinkerPluginLto::LinkerPlugin(PathBuf::from(path)),
1067 fn parse_merge_functions(slot: &mut Option<MergeFunctions>, v: Option<&str>) -> bool {
1068 match v.and_then(|s| MergeFunctions::from_str(s).ok()) {
1069 Some(mergefunc) => *slot = Some(mergefunc),
1077 options! {CodegenOptions, CodegenSetter, basic_codegen_options,
1078 build_codegen_options, "C", "codegen",
1079 CG_OPTIONS, cg_type_desc, cgsetters,
1080 ar: Option<String> = (None, parse_opt_string, [UNTRACKED],
1081 "this option is deprecated and does nothing"),
1082 linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1083 "system linker to link outputs with"),
1084 link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1085 "a single extra argument to append to the linker invocation (can be used several times)"),
1086 link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1087 "extra arguments to append to the linker invocation (space separated)"),
1088 link_dead_code: bool = (false, parse_bool, [UNTRACKED],
1089 "don't let linker strip dead code (turning it on can be used for code coverage)"),
1090 lto: LtoCli = (LtoCli::Unspecified, parse_lto, [TRACKED],
1091 "perform LLVM link-time optimizations"),
1092 target_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1093 "select target processor (rustc --print target-cpus for details)"),
1094 target_feature: String = (String::new(), parse_string, [TRACKED],
1095 "target specific attributes (rustc --print target-features for details)"),
1096 passes: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1097 "a list of extra LLVM passes to run (space separated)"),
1098 llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1099 "a list of arguments to pass to llvm (space separated)"),
1100 save_temps: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1101 "`-C save-temps` might not produce all requested temporary products \
1102 when incremental compilation is enabled.")],
1103 "save all temporary output files during compilation"),
1104 rpath: bool = (false, parse_bool, [UNTRACKED],
1105 "set rpath values in libs/exes"),
1106 overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1107 "use overflow checks for integer arithmetic"),
1108 no_prepopulate_passes: bool = (false, parse_bool, [TRACKED],
1109 "don't pre-populate the pass manager with a list of passes"),
1110 no_vectorize_loops: bool = (false, parse_bool, [TRACKED],
1111 "don't run the loop vectorization optimization passes"),
1112 no_vectorize_slp: bool = (false, parse_bool, [TRACKED],
1113 "don't run LLVM's SLP vectorization pass"),
1114 soft_float: bool = (false, parse_bool, [TRACKED],
1115 "use soft float ABI (*eabihf targets only)"),
1116 prefer_dynamic: bool = (false, parse_bool, [TRACKED],
1117 "prefer dynamic linking to static linking"),
1118 no_integrated_as: bool = (false, parse_bool, [TRACKED],
1119 "use an external assembler rather than LLVM's integrated one"),
1120 no_redzone: Option<bool> = (None, parse_opt_bool, [TRACKED],
1121 "disable the use of the redzone"),
1122 relocation_model: Option<String> = (None, parse_opt_string, [TRACKED],
1123 "choose the relocation model to use (rustc --print relocation-models for details)"),
1124 code_model: Option<String> = (None, parse_opt_string, [TRACKED],
1125 "choose the code model to use (rustc --print code-models for details)"),
1126 metadata: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1127 "metadata to mangle symbol names with"),
1128 extra_filename: String = (String::new(), parse_string, [UNTRACKED],
1129 "extra data to put in each output filename"),
1130 codegen_units: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1131 "divide crate into N units to optimize in parallel"),
1132 remark: Passes = (Passes::Some(Vec::new()), parse_passes, [UNTRACKED],
1133 "print remarks for these optimization passes (space separated, or \"all\")"),
1134 no_stack_check: bool = (false, parse_bool, [UNTRACKED],
1135 "the --no-stack-check flag is deprecated and does nothing"),
1136 debuginfo: Option<usize> = (None, parse_opt_uint, [TRACKED],
1137 "debug info emission level, 0 = no debug info, 1 = line tables only, \
1138 2 = full debug info with variable and type information"),
1139 opt_level: Option<String> = (None, parse_opt_string, [TRACKED],
1140 "optimize with possible levels 0-3, s, or z"),
1141 force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
1142 "force use of the frame pointers"),
1143 debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
1144 "explicitly enable the cfg(debug_assertions) directive"),
1145 inline_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
1146 "set the threshold for inlining a function (default: 225)"),
1147 panic: Option<PanicStrategy> = (None, parse_panic_strategy,
1148 [TRACKED], "panic strategy to compile crate with"),
1149 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1150 "enable incremental compilation"),
1151 default_linker_libraries: Option<bool> = (None, parse_opt_bool, [UNTRACKED],
1152 "allow the linker to link its default libraries"),
1153 linker_flavor: Option<LinkerFlavor> = (None, parse_linker_flavor, [UNTRACKED],
1155 linker_plugin_lto: LinkerPluginLto = (LinkerPluginLto::Disabled,
1156 parse_linker_plugin_lto, [TRACKED],
1157 "generate build artifacts that are compatible with linker-based LTO."),
1161 options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
1162 build_debugging_options, "Z", "debugging",
1163 DB_OPTIONS, db_type_desc, dbsetters,
1164 codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
1165 "the backend to use"),
1166 verbose: bool = (false, parse_bool, [UNTRACKED],
1167 "in general, enable more debug printouts"),
1168 span_free_formats: bool = (false, parse_bool, [UNTRACKED],
1169 "when debug-printing compiler state, do not include spans"), // o/w tests have closure@path
1170 identify_regions: bool = (false, parse_bool, [UNTRACKED],
1171 "make unnamed regions display as '# (where # is some non-ident unique id)"),
1172 borrowck: Option<String> = (None, parse_opt_string, [UNTRACKED],
1173 "select which borrowck is used (`ast`, `mir`, `migrate`, or `compare`)"),
1174 two_phase_borrows: bool = (false, parse_bool, [UNTRACKED],
1175 "use two-phase reserved/active distinction for `&mut` borrows in MIR borrowck"),
1176 two_phase_beyond_autoref: bool = (false, parse_bool, [UNTRACKED],
1177 "when using two-phase-borrows, allow two phases even for non-autoref `&mut` borrows"),
1178 time_passes: bool = (false, parse_bool, [UNTRACKED],
1179 "measure time of each rustc pass"),
1180 count_llvm_insns: bool = (false, parse_bool,
1181 [UNTRACKED_WITH_WARNING(true,
1182 "The output generated by `-Z count_llvm_insns` might not be reliable \
1183 when used with incremental compilation")],
1184 "count where LLVM instrs originate"),
1185 time_llvm_passes: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1186 "The output of `-Z time-llvm-passes` will only reflect timings of \
1187 re-codegened modules when used with incremental compilation" )],
1188 "measure time of each LLVM pass"),
1189 input_stats: bool = (false, parse_bool, [UNTRACKED],
1190 "gather statistics about the input"),
1191 codegen_stats: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1192 "The output of `-Z codegen-stats` might not be accurate when incremental \
1193 compilation is enabled")],
1194 "gather codegen statistics"),
1195 asm_comments: bool = (false, parse_bool, [TRACKED],
1196 "generate comments into the assembly (may change behavior)"),
1197 verify_llvm_ir: bool = (false, parse_bool, [TRACKED],
1199 borrowck_stats: bool = (false, parse_bool, [UNTRACKED],
1200 "gather borrowck statistics"),
1201 no_landing_pads: bool = (false, parse_bool, [TRACKED],
1202 "omit landing pads for unwinding"),
1203 fewer_names: bool = (false, parse_bool, [TRACKED],
1204 "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR)"),
1205 meta_stats: bool = (false, parse_bool, [UNTRACKED],
1206 "gather metadata statistics"),
1207 print_link_args: bool = (false, parse_bool, [UNTRACKED],
1208 "print the arguments passed to the linker"),
1209 print_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1210 "prints the llvm optimization passes being run"),
1211 ast_json: bool = (false, parse_bool, [UNTRACKED],
1212 "print the AST as JSON and halt"),
1213 threads: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1214 "use a thread pool with N threads"),
1215 ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED],
1216 "print the pre-expansion AST as JSON and halt"),
1217 ls: bool = (false, parse_bool, [UNTRACKED],
1218 "list the symbols defined by a library crate"),
1219 save_analysis: bool = (false, parse_bool, [UNTRACKED],
1220 "write syntax and type analysis (in JSON format) information, in \
1221 addition to normal output"),
1222 flowgraph_print_loans: bool = (false, parse_bool, [UNTRACKED],
1223 "include loan analysis data in -Z unpretty flowgraph output"),
1224 flowgraph_print_moves: bool = (false, parse_bool, [UNTRACKED],
1225 "include move analysis data in -Z unpretty flowgraph output"),
1226 flowgraph_print_assigns: bool = (false, parse_bool, [UNTRACKED],
1227 "include assignment analysis data in -Z unpretty flowgraph output"),
1228 flowgraph_print_all: bool = (false, parse_bool, [UNTRACKED],
1229 "include all dataflow analysis data in -Z unpretty flowgraph output"),
1230 print_region_graph: bool = (false, parse_bool, [UNTRACKED],
1231 "prints region inference graph. \
1232 Use with RUST_REGION_GRAPH=help for more info"),
1233 parse_only: bool = (false, parse_bool, [UNTRACKED],
1234 "parse only; do not compile, assemble, or link"),
1235 no_codegen: bool = (false, parse_bool, [TRACKED],
1236 "run all passes except codegen; no output"),
1237 treat_err_as_bug: bool = (false, parse_bool, [TRACKED],
1238 "treat all errors that occur as bugs"),
1239 report_delayed_bugs: bool = (false, parse_bool, [TRACKED],
1240 "immediately print bugs registered with `delay_span_bug`"),
1241 external_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1242 "show macro backtraces even for non-local macros"),
1243 teach: bool = (false, parse_bool, [TRACKED],
1244 "show extended diagnostic help"),
1245 continue_parse_after_error: bool = (false, parse_bool, [TRACKED],
1246 "attempt to recover from parse errors (experimental)"),
1247 dep_tasks: bool = (false, parse_bool, [UNTRACKED],
1248 "print tasks that execute and the color their dep node gets (requires debug build)"),
1249 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1250 "enable incremental compilation (experimental)"),
1251 incremental_queries: bool = (true, parse_bool, [UNTRACKED],
1252 "enable incremental compilation support for queries (experimental)"),
1253 incremental_info: bool = (false, parse_bool, [UNTRACKED],
1254 "print high-level information about incremental reuse (or the lack thereof)"),
1255 incremental_dump_hash: bool = (false, parse_bool, [UNTRACKED],
1256 "dump hash information in textual format to stdout"),
1257 incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
1258 "verify incr. comp. hashes of green query instances"),
1259 incremental_ignore_spans: bool = (false, parse_bool, [UNTRACKED],
1260 "ignore spans during ICH computation -- used for testing"),
1261 instrument_mcount: bool = (false, parse_bool, [TRACKED],
1262 "insert function instrument code for mcount-based tracing"),
1263 dump_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1264 "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv)"),
1265 query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1266 "enable queries of the dependency graph for regression testing"),
1267 profile_queries: bool = (false, parse_bool, [UNTRACKED],
1268 "trace and profile the queries of the incremental compilation framework"),
1269 profile_queries_and_keys: bool = (false, parse_bool, [UNTRACKED],
1270 "trace and profile the queries and keys of the incremental compilation framework"),
1271 no_analysis: bool = (false, parse_bool, [UNTRACKED],
1272 "parse and expand the source, but run no analysis"),
1273 extra_plugins: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1274 "load extra plugins"),
1275 unstable_options: bool = (false, parse_bool, [UNTRACKED],
1276 "adds unstable command line options to rustc interface"),
1277 force_overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1278 "force overflow checks on or off"),
1279 trace_macros: bool = (false, parse_bool, [UNTRACKED],
1280 "for every macro invocation, print its name and arguments"),
1281 debug_macros: bool = (false, parse_bool, [TRACKED],
1282 "emit line numbers debug info inside macros"),
1283 keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED],
1284 "don't clear the hygiene data after analysis"),
1285 keep_ast: bool = (false, parse_bool, [UNTRACKED],
1286 "keep the AST after lowering it to HIR"),
1287 show_span: Option<String> = (None, parse_opt_string, [TRACKED],
1288 "show spans for compiler debugging (expr|pat|ty)"),
1289 print_type_sizes: bool = (false, parse_bool, [UNTRACKED],
1290 "print layout information for each type encountered"),
1291 print_mono_items: Option<String> = (None, parse_opt_string, [UNTRACKED],
1292 "print the result of the monomorphization collection pass"),
1293 mir_opt_level: usize = (1, parse_uint, [TRACKED],
1294 "set the MIR optimization level (0-3, default: 1)"),
1295 mutable_noalias: Option<bool> = (None, parse_opt_bool, [TRACKED],
1296 "emit noalias metadata for mutable references (default: yes on LLVM >= 6)"),
1297 dump_mir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1298 "dump MIR state to file.
1299 `val` is used to select which passes and functions to dump. For example:
1300 `all` matches all passes and functions,
1301 `foo` matches all passes for functions whose name contains 'foo',
1302 `foo & ConstProp` only the 'ConstProp' pass for function names containing 'foo',
1303 `foo | bar` all passes for function names containing 'foo' or 'bar'."),
1305 dump_mir_dir: String = (String::from("mir_dump"), parse_string, [UNTRACKED],
1306 "the directory the MIR is dumped into"),
1307 dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED],
1308 "in addition to `.mir` files, create graphviz `.dot` files"),
1309 dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED],
1310 "if set, exclude the pass number when dumping MIR (used in tests)"),
1311 mir_emit_retag: bool = (false, parse_bool, [TRACKED],
1312 "emit Retagging MIR statements, interpreted e.g., by miri; implies -Zmir-opt-level=0"),
1313 perf_stats: bool = (false, parse_bool, [UNTRACKED],
1314 "print some performance-related statistics"),
1315 query_stats: bool = (false, parse_bool, [UNTRACKED],
1316 "print some statistics about the query system"),
1317 hir_stats: bool = (false, parse_bool, [UNTRACKED],
1318 "print some statistics about AST and HIR"),
1319 always_encode_mir: bool = (false, parse_bool, [TRACKED],
1320 "encode MIR of all functions into the crate metadata"),
1321 unleash_the_miri_inside_of_you: bool = (false, parse_bool, [TRACKED],
1322 "take the breaks off const evaluation. NOTE: this is unsound"),
1323 osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
1324 "pass `-install_name @rpath/...` to the macOS linker"),
1325 sanitizer: Option<Sanitizer> = (None, parse_sanitizer, [TRACKED],
1327 fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
1328 "set the optimization fuel quota for a crate"),
1329 print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
1330 "make Rustc print the total optimization fuel used by a crate"),
1331 force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
1332 "force all crates to be `rustc_private` unstable"),
1333 pre_link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1334 "a single extra argument to prepend the linker invocation (can be used several times)"),
1335 pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1336 "extra arguments to prepend to the linker invocation (space separated)"),
1337 profile: bool = (false, parse_bool, [TRACKED],
1338 "insert profiling code"),
1339 pgo_gen: Option<String> = (None, parse_opt_string, [TRACKED],
1340 "Generate PGO profile data, to a given file, or to the default location if it's empty."),
1341 pgo_use: String = (String::new(), parse_string, [TRACKED],
1342 "Use PGO profile data from the given profile file."),
1343 disable_instrumentation_preinliner: bool = (false, parse_bool, [TRACKED],
1344 "Disable the instrumentation pre-inliner, useful for profiling / PGO."),
1345 relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
1346 "choose which RELRO level to use"),
1347 nll_facts: bool = (false, parse_bool, [UNTRACKED],
1348 "dump facts from NLL analysis into side files"),
1349 nll_dont_emit_read_for_match: bool = (false, parse_bool, [UNTRACKED],
1350 "in match codegen, do not include FakeRead statements (used by mir-borrowck)"),
1351 dont_buffer_diagnostics: bool = (false, parse_bool, [UNTRACKED],
1352 "emit diagnostics rather than buffering (breaks NLL error downgrading, sorting)."),
1353 polonius: bool = (false, parse_bool, [UNTRACKED],
1354 "enable polonius-based borrow-checker"),
1355 codegen_time_graph: bool = (false, parse_bool, [UNTRACKED],
1356 "generate a graphical HTML report of time spent in codegen and LLVM"),
1357 thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
1358 "enable ThinLTO when possible"),
1359 inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
1360 "control whether #[inline] functions are in all cgus"),
1361 tls_model: Option<String> = (None, parse_opt_string, [TRACKED],
1362 "choose the TLS model to use (rustc --print tls-models for details)"),
1363 saturating_float_casts: bool = (false, parse_bool, [TRACKED],
1364 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1365 the max/min integer respectively, and NaN is mapped to 0"),
1366 lower_128bit_ops: Option<bool> = (None, parse_opt_bool, [TRACKED],
1367 "rewrite operators on i128 and u128 into lang item calls (typically provided \
1368 by compiler-builtins) so codegen doesn't need to support them,
1369 overriding the default for the current target"),
1370 human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
1371 "generate human-readable, predictable names for codegen units"),
1372 dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
1373 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
1375 unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
1376 "Present the input source, unstable (and less-pretty) variants;
1377 valid types are any of the types for `--pretty`, as well as:
1378 `expanded`, `expanded,identified`,
1379 `expanded,hygiene` (with internal representations),
1380 `flowgraph=<nodeid>` (graphviz formatted flowgraph for node),
1381 `flowgraph,unlabelled=<nodeid>` (unlabelled graphviz formatted flowgraph for node),
1382 `everybody_loops` (all function bodies replaced with `loop {}`),
1383 `hir` (the HIR), `hir,identified`,
1384 `hir,typed` (HIR with types for each node),
1385 `hir-tree` (dump the raw HIR),
1386 `mir` (the MIR), or `mir-cfg` (graphviz formatted MIR)"),
1387 run_dsymutil: Option<bool> = (None, parse_opt_bool, [TRACKED],
1388 "run `dsymutil` and delete intermediate object files"),
1389 ui_testing: bool = (false, parse_bool, [UNTRACKED],
1390 "format compiler diagnostics in a way that's better suitable for UI testing"),
1391 embed_bitcode: bool = (false, parse_bool, [TRACKED],
1392 "embed LLVM bitcode in object files"),
1393 strip_debuginfo_if_disabled: Option<bool> = (None, parse_opt_bool, [TRACKED],
1394 "tell the linker to strip debuginfo when building without debuginfo enabled."),
1395 share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
1396 "make the current crate share its generic instantiations"),
1397 chalk: bool = (false, parse_bool, [TRACKED],
1398 "enable the experimental Chalk-based trait solving engine"),
1399 no_parallel_llvm: bool = (false, parse_bool, [UNTRACKED],
1400 "don't run LLVM in parallel (while keeping codegen-units and ThinLTO)"),
1401 no_leak_check: bool = (false, parse_bool, [UNTRACKED],
1402 "disables the 'leak check' for subtyping; unsound, but useful for tests"),
1403 no_interleave_lints: bool = (false, parse_bool, [UNTRACKED],
1404 "don't interleave execution of lints; allows benchmarking individual lints"),
1405 crate_attr: Vec<String> = (Vec::new(), parse_string_push, [TRACKED],
1406 "inject the given attribute in the crate"),
1407 self_profile: bool = (false, parse_bool, [UNTRACKED],
1408 "run the self profiler"),
1409 profile_json: bool = (false, parse_bool, [UNTRACKED],
1410 "output a json file with profiler results"),
1411 emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
1412 "emits a section containing stack size metadata"),
1413 plt: Option<bool> = (None, parse_opt_bool, [TRACKED],
1414 "whether to use the PLT when calling into shared libraries;
1415 only has effect for PIC code on systems with ELF binaries
1416 (default: PLT is disabled if full relro is enabled)"),
1417 merge_functions: Option<MergeFunctions> = (None, parse_merge_functions, [TRACKED],
1418 "control the operation of the MergeFunctions LLVM pass, taking
1419 the same values as the target option of the same name"),
1422 pub fn default_lib_output() -> CrateType {
1426 pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
1427 let end = &sess.target.target.target_endian;
1428 let arch = &sess.target.target.arch;
1429 let wordsz = &sess.target.target.target_pointer_width;
1430 let os = &sess.target.target.target_os;
1431 let env = &sess.target.target.target_env;
1432 let vendor = &sess.target.target.target_vendor;
1433 let min_atomic_width = sess.target.target.min_atomic_width();
1434 let max_atomic_width = sess.target.target.max_atomic_width();
1435 let atomic_cas = sess.target.target.options.atomic_cas;
1437 let mut ret = FxHashSet::default();
1438 ret.reserve(6); // the minimum number of insertions
1440 ret.insert((Symbol::intern("target_os"), Some(Symbol::intern(os))));
1441 if let Some(ref fam) = sess.target.target.options.target_family {
1442 ret.insert((Symbol::intern("target_family"), Some(Symbol::intern(fam))));
1443 if fam == "windows" || fam == "unix" {
1444 ret.insert((Symbol::intern(fam), None));
1447 ret.insert((Symbol::intern("target_arch"), Some(Symbol::intern(arch))));
1448 ret.insert((Symbol::intern("target_endian"), Some(Symbol::intern(end))));
1450 Symbol::intern("target_pointer_width"),
1451 Some(Symbol::intern(wordsz)),
1453 ret.insert((Symbol::intern("target_env"), Some(Symbol::intern(env))));
1455 Symbol::intern("target_vendor"),
1456 Some(Symbol::intern(vendor)),
1458 if sess.target.target.options.has_elf_tls {
1459 ret.insert((Symbol::intern("target_thread_local"), None));
1461 for &i in &[8, 16, 32, 64, 128] {
1462 if i >= min_atomic_width && i <= max_atomic_width {
1463 let s = i.to_string();
1465 Symbol::intern("target_has_atomic"),
1466 Some(Symbol::intern(&s)),
1470 Symbol::intern("target_has_atomic"),
1471 Some(Symbol::intern("ptr")),
1477 ret.insert((Symbol::intern("target_has_atomic"), Some(Symbol::intern("cas"))));
1479 if sess.opts.debug_assertions {
1480 ret.insert((Symbol::intern("debug_assertions"), None));
1482 if sess.opts.crate_types.contains(&CrateType::ProcMacro) {
1483 ret.insert((Symbol::intern("proc_macro"), None));
1488 pub fn build_configuration(sess: &Session, mut user_cfg: ast::CrateConfig) -> ast::CrateConfig {
1489 // Combine the configuration requested by the session (command line) with
1490 // some default and generated configuration items
1491 let default_cfg = default_configuration(sess);
1492 // If the user wants a test runner, then add the test cfg
1494 user_cfg.insert((Symbol::intern("test"), None));
1496 user_cfg.extend(default_cfg.iter().cloned());
1500 pub fn build_target_config(opts: &Options, sp: &Handler) -> Config {
1501 let target = Target::search(&opts.target_triple).unwrap_or_else(|e| {
1502 sp.struct_fatal(&format!("Error loading target specification: {}", e))
1503 .help("Use `--print target-list` for a list of built-in targets")
1508 let (isize_ty, usize_ty) = match &target.target_pointer_width[..] {
1509 "16" => (ast::IntTy::I16, ast::UintTy::U16),
1510 "32" => (ast::IntTy::I32, ast::UintTy::U32),
1511 "64" => (ast::IntTy::I64, ast::UintTy::U64),
1512 w => sp.fatal(&format!(
1513 "target specification was invalid: \
1514 unrecognized target-pointer-width {}",
1526 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
1527 pub enum OptionStability {
1532 pub struct RustcOptGroup {
1533 pub apply: Box<dyn Fn(&mut getopts::Options) -> &mut getopts::Options>,
1534 pub name: &'static str,
1535 pub stability: OptionStability,
1538 impl RustcOptGroup {
1539 pub fn is_stable(&self) -> bool {
1540 self.stability == OptionStability::Stable
1543 pub fn stable<F>(name: &'static str, f: F) -> RustcOptGroup
1545 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1550 stability: OptionStability::Stable,
1554 pub fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup
1556 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1561 stability: OptionStability::Unstable,
1566 // The `opt` local module holds wrappers around the `getopts` API that
1567 // adds extra rustc-specific metadata to each option; such metadata
1568 // is exposed by . The public
1569 // functions below ending with `_u` are the functions that return
1570 // *unstable* options, i.e., options that are only enabled when the
1571 // user also passes the `-Z unstable-options` debugging flag.
1573 // The `fn opt_u` etc below are written so that we can use them
1574 // in the future; do not warn about them not being used right now.
1575 #![allow(dead_code)]
1578 use super::RustcOptGroup;
1580 pub type R = RustcOptGroup;
1581 pub type S = &'static str;
1583 fn stable<F>(name: S, f: F) -> R
1585 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1587 RustcOptGroup::stable(name, f)
1590 fn unstable<F>(name: S, f: F) -> R
1592 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1594 RustcOptGroup::unstable(name, f)
1597 fn longer(a: S, b: S) -> S {
1598 if a.len() > b.len() {
1605 pub fn opt_s(a: S, b: S, c: S, d: S) -> R {
1606 stable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1608 pub fn multi_s(a: S, b: S, c: S, d: S) -> R {
1609 stable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1611 pub fn flag_s(a: S, b: S, c: S) -> R {
1612 stable(longer(a, b), move |opts| opts.optflag(a, b, c))
1614 pub fn flagopt_s(a: S, b: S, c: S, d: S) -> R {
1615 stable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1617 pub fn flagmulti_s(a: S, b: S, c: S) -> R {
1618 stable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1621 pub fn opt(a: S, b: S, c: S, d: S) -> R {
1622 unstable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1624 pub fn multi(a: S, b: S, c: S, d: S) -> R {
1625 unstable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1627 pub fn flag(a: S, b: S, c: S) -> R {
1628 unstable(longer(a, b), move |opts| opts.optflag(a, b, c))
1630 pub fn flagopt(a: S, b: S, c: S, d: S) -> R {
1631 unstable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1633 pub fn flagmulti(a: S, b: S, c: S) -> R {
1634 unstable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1638 /// Returns the "short" subset of the rustc command line options,
1639 /// including metadata for each option, such as whether the option is
1640 /// part of the stable long-term interface for rustc.
1641 pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
1643 opt::flag_s("h", "help", "Display this message"),
1644 opt::multi_s("", "cfg", "Configure the compilation environment", "SPEC"),
1648 "Add a directory to the library search path. The
1649 optional KIND can be one of dependency, crate, native,
1650 framework or all (the default).",
1656 "Link the generated crate(s) to the specified native
1657 library NAME. The optional KIND can be one of
1658 static, dylib, or framework. If omitted, dylib is
1665 "Comma separated list of types of crates
1666 for the compiler to emit",
1667 "[bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]",
1672 "Specify the name of the crate being built",
1678 "Comma separated list of types of output for \
1679 the compiler to emit",
1680 "[asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]",
1685 "Comma separated list of compiler information to \
1687 "[crate-name|file-names|sysroot|cfg|target-list|\
1688 target-cpus|target-features|relocation-models|\
1689 code-models|tls-models|target-spec-json|native-static-libs]",
1691 opt::flagmulti_s("g", "", "Equivalent to -C debuginfo=2"),
1692 opt::flagmulti_s("O", "", "Equivalent to -C opt-level=2"),
1693 opt::opt_s("o", "", "Write output to <filename>", "FILENAME"),
1697 "Write output to compiler-chosen filename \
1704 "Provide a detailed explanation of an error \
1708 opt::flag_s("", "test", "Build a test harness"),
1712 "Target triple for which the code is compiled",
1715 opt::multi_s("W", "warn", "Set lint warnings", "OPT"),
1716 opt::multi_s("A", "allow", "Set lint allowed", "OPT"),
1717 opt::multi_s("D", "deny", "Set lint denied", "OPT"),
1718 opt::multi_s("F", "forbid", "Set lint forbidden", "OPT"),
1722 "Set the most restrictive lint level. \
1723 More restrictive lints are capped at this \
1727 opt::multi_s("C", "codegen", "Set a codegen option", "OPT[=VALUE]"),
1728 opt::flag_s("V", "version", "Print version info and exit"),
1729 opt::flag_s("v", "verbose", "Use verbose output"),
1733 /// Returns all rustc command line options, including metadata for
1734 /// each option, such as whether the option is part of the stable
1735 /// long-term interface for rustc.
1736 pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
1737 let mut opts = rustc_short_optgroups();
1742 "Specify where an external rust library is located",
1748 "Specify where an extern rust library is located, marking it as a private dependency",
1751 opt::opt_s("", "sysroot", "Override the system root", "PATH"),
1752 opt::multi("Z", "", "Set internal debugging options", "FLAG"),
1756 "How errors and other messages are produced",
1762 "Configure coloring of output:
1763 auto = colorize, if output goes to a tty (default);
1764 always = always colorize output;
1765 never = never colorize output",
1766 "auto|always|never",
1771 "Pretty-print the input instead of compiling;
1772 valid types are: `normal` (un-annotated source),
1773 `expanded` (crates expanded), or
1774 `expanded,identified` (fully parenthesized, AST nodes with IDs).",
1780 "Specify which edition of the compiler to use when compiling code.",
1785 "remap-path-prefix",
1786 "Remap source names in all output (compiler messages and output files)",
1793 // Convert strings provided as --cfg [cfgspec] into a crate_cfg
1794 pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> ast::CrateConfig {
1798 let sess = parse::ParseSess::new(FilePathMapping::empty());
1799 let filename = FileName::cfg_spec_source_code(&s);
1800 let mut parser = parse::new_parser_from_source_str(&sess, filename, s.to_string());
1802 macro_rules! error {($reason: expr) => {
1803 early_error(ErrorOutputType::default(),
1804 &format!(concat!("invalid `--cfg` argument: `{}` (", $reason, ")"), s));
1807 match &mut parser.parse_meta_item() {
1808 Ok(meta_item) if parser.token == token::Eof => {
1809 if meta_item.ident.segments.len() != 1 {
1810 error!("argument key must be an identifier");
1812 match &meta_item.node {
1813 MetaItemKind::List(..) => {
1814 error!(r#"expected `key` or `key="value"`"#);
1816 MetaItemKind::NameValue(lit) if !lit.node.is_str() => {
1817 error!("argument value must be a string");
1819 MetaItemKind::NameValue(..) | MetaItemKind::Word => {
1820 return (meta_item.name(), meta_item.value_str());
1825 Err(err) => err.cancel(),
1828 error!(r#"expected `key` or `key="value"`"#);
1830 .collect::<ast::CrateConfig>()
1833 pub fn get_cmd_lint_options(matches: &getopts::Matches,
1834 error_format: ErrorOutputType)
1835 -> (Vec<(String, lint::Level)>, bool, Option<lint::Level>) {
1836 let mut lint_opts = vec![];
1837 let mut describe_lints = false;
1839 for &level in &[lint::Allow, lint::Warn, lint::Deny, lint::Forbid] {
1840 for lint_name in matches.opt_strs(level.as_str()) {
1841 if lint_name == "help" {
1842 describe_lints = true;
1844 lint_opts.push((lint_name.replace("-", "_"), level));
1849 let lint_cap = matches.opt_str("cap-lints").map(|cap| {
1850 lint::Level::from_str(&cap)
1851 .unwrap_or_else(|| early_error(error_format, &format!("unknown lint level: `{}`", cap)))
1853 (lint_opts, describe_lints, lint_cap)
1856 pub fn build_session_options_and_crate_config(
1857 matches: &getopts::Matches,
1858 ) -> (Options, ast::CrateConfig) {
1859 let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
1860 Some("auto") => ColorConfig::Auto,
1861 Some("always") => ColorConfig::Always,
1862 Some("never") => ColorConfig::Never,
1864 None => ColorConfig::Auto,
1866 Some(arg) => early_error(
1867 ErrorOutputType::default(),
1869 "argument for --color must be auto, \
1870 always or never (instead was `{}`)",
1876 let edition = match matches.opt_str("edition") {
1877 Some(arg) => Edition::from_str(&arg).unwrap_or_else(|_|
1879 ErrorOutputType::default(),
1881 "argument for --edition must be one of: \
1882 {}. (instead was `{}`)",
1888 None => DEFAULT_EDITION,
1891 if !edition.is_stable() && !nightly_options::is_nightly_build() {
1893 ErrorOutputType::default(),
1895 "Edition {} is unstable and only \
1896 available for nightly builds of rustc.",
1903 // We need the opts_present check because the driver will send us Matches
1904 // with only stable options if no unstable options are used. Since error-format
1905 // is unstable, it will not be present. We have to use opts_present not
1906 // opt_present because the latter will panic.
1907 let error_format = if matches.opts_present(&["error-format".to_owned()]) {
1908 match matches.opt_str("error-format").as_ref().map(|s| &s[..]) {
1909 Some("human") => ErrorOutputType::HumanReadable(color),
1910 Some("json") => ErrorOutputType::Json(false),
1911 Some("pretty-json") => ErrorOutputType::Json(true),
1912 Some("short") => ErrorOutputType::Short(color),
1913 None => ErrorOutputType::HumanReadable(color),
1915 Some(arg) => early_error(
1916 ErrorOutputType::HumanReadable(color),
1918 "argument for --error-format must be `human`, `json` or \
1919 `short` (instead was `{}`)",
1925 ErrorOutputType::HumanReadable(color)
1928 let unparsed_crate_types = matches.opt_strs("crate-type");
1929 let crate_types = parse_crate_types_from_list(unparsed_crate_types)
1930 .unwrap_or_else(|e| early_error(error_format, &e[..]));
1933 let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
1935 let mut debugging_opts = build_debugging_options(matches, error_format);
1937 if !debugging_opts.unstable_options && error_format == ErrorOutputType::Json(true) {
1939 ErrorOutputType::Json(false),
1940 "--error-format=pretty-json is unstable",
1944 if debugging_opts.pgo_gen.is_some() && !debugging_opts.pgo_use.is_empty() {
1947 "options `-Z pgo-gen` and `-Z pgo-use` are exclusive",
1951 let mut output_types = BTreeMap::new();
1952 if !debugging_opts.parse_only {
1953 for list in matches.opt_strs("emit") {
1954 for output_type in list.split(',') {
1955 let mut parts = output_type.splitn(2, '=');
1956 let shorthand = parts.next().unwrap();
1957 let output_type = OutputType::from_shorthand(shorthand).unwrap_or_else(||
1961 "unknown emission type: `{}` - expected one of: {}",
1963 OutputType::shorthands_display(),
1967 let path = parts.next().map(PathBuf::from);
1968 output_types.insert(output_type, path);
1972 if output_types.is_empty() {
1973 output_types.insert(OutputType::Exe, None);
1976 let mut cg = build_codegen_options(matches, error_format);
1977 let mut codegen_units = cg.codegen_units;
1978 let mut disable_thinlto = false;
1980 // Issue #30063: if user requests llvm-related output to one
1981 // particular path, disable codegen-units.
1982 let incompatible: Vec<_> = output_types
1984 .map(|ot_path| ot_path.0)
1985 .filter(|ot| !ot.is_compatible_with_codegen_units_and_single_output_file())
1986 .map(|ot| ot.shorthand())
1988 if !incompatible.is_empty() {
1989 match codegen_units {
1990 Some(n) if n > 1 => {
1991 if matches.opt_present("o") {
1992 for ot in &incompatible {
1996 "--emit={} with -o incompatible with \
1997 -C codegen-units=N for N > 1",
2002 early_warn(error_format, "resetting to default -C codegen-units=1");
2003 codegen_units = Some(1);
2004 disable_thinlto = true;
2008 codegen_units = Some(1);
2009 disable_thinlto = true;
2014 if debugging_opts.threads == Some(0) {
2017 "Value for threads must be a positive nonzero integer",
2021 if debugging_opts.threads.unwrap_or(1) > 1 && debugging_opts.fuel.is_some() {
2024 "Optimization fuel is incompatible with multiple threads",
2028 if codegen_units == Some(0) {
2031 "Value for codegen units must be a positive nonzero integer",
2035 let incremental = match (&debugging_opts.incremental, &cg.incremental) {
2036 (&Some(ref path1), &Some(ref path2)) => {
2041 "conflicting paths for `-Z incremental` and \
2042 `-C incremental` specified: {} versus {}",
2050 (&Some(ref path), &None) => Some(path),
2051 (&None, &Some(ref path)) => Some(path),
2052 (&None, &None) => None,
2053 }.map(|m| PathBuf::from(m));
2055 if debugging_opts.profile && incremental.is_some() {
2058 "can't instrument with gcov profiling when compiling incrementally",
2062 let mut prints = Vec::<PrintRequest>::new();
2063 if cg.target_cpu.as_ref().map_or(false, |s| s == "help") {
2064 prints.push(PrintRequest::TargetCPUs);
2065 cg.target_cpu = None;
2067 if cg.target_feature == "help" {
2068 prints.push(PrintRequest::TargetFeatures);
2069 cg.target_feature = String::new();
2071 if cg.relocation_model.as_ref().map_or(false, |s| s == "help") {
2072 prints.push(PrintRequest::RelocationModels);
2073 cg.relocation_model = None;
2075 if cg.code_model.as_ref().map_or(false, |s| s == "help") {
2076 prints.push(PrintRequest::CodeModels);
2077 cg.code_model = None;
2082 .map_or(false, |s| s == "help")
2084 prints.push(PrintRequest::TlsModels);
2085 debugging_opts.tls_model = None;
2090 let sysroot_opt = matches.opt_str("sysroot").map(|m| PathBuf::from(&m));
2091 let target_triple = if let Some(target) = matches.opt_str("target") {
2092 if target.ends_with(".json") {
2093 let path = Path::new(&target);
2094 TargetTriple::from_path(&path).unwrap_or_else(|_|
2095 early_error(error_format, &format!("target file {:?} does not exist", path)))
2097 TargetTriple::TargetTriple(target)
2100 TargetTriple::from_triple(host_triple())
2103 if matches.opt_present("O") {
2104 if cg.opt_level.is_some() {
2105 early_error(error_format, "-O and -C opt-level both provided");
2109 match cg.opt_level.as_ref().map(String::as_ref) {
2110 None => OptLevel::No,
2111 Some("0") => OptLevel::No,
2112 Some("1") => OptLevel::Less,
2113 Some("2") => OptLevel::Default,
2114 Some("3") => OptLevel::Aggressive,
2115 Some("s") => OptLevel::Size,
2116 Some("z") => OptLevel::SizeMin,
2121 "optimization level needs to be \
2122 between 0-3, s or z (instead was `{}`)",
2130 let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);
2131 let debuginfo = if matches.opt_present("g") {
2132 if cg.debuginfo.is_some() {
2133 early_error(error_format, "-g and -C debuginfo both provided");
2137 match cg.debuginfo {
2138 None | Some(0) => DebugInfo::None,
2139 Some(1) => DebugInfo::Limited,
2140 Some(2) => DebugInfo::Full,
2145 "debug info level needs to be between \
2146 0-2 (instead was `{}`)",
2154 let mut search_paths = vec![];
2155 for s in &matches.opt_strs("L") {
2156 search_paths.push(SearchPath::from_cli_opt(&s[..], error_format));
2163 // Parse string of the form "[KIND=]lib[:new_name]",
2164 // where KIND is one of "dylib", "framework", "static".
2165 let mut parts = s.splitn(2, '=');
2166 let kind = parts.next().unwrap();
2167 let (name, kind) = match (parts.next(), kind) {
2168 (None, name) => (name, None),
2169 (Some(name), "dylib") => (name, Some(cstore::NativeUnknown)),
2170 (Some(name), "framework") => (name, Some(cstore::NativeFramework)),
2171 (Some(name), "static") => (name, Some(cstore::NativeStatic)),
2172 (Some(name), "static-nobundle") => (name, Some(cstore::NativeStaticNobundle)),
2177 "unknown library kind `{}`, expected \
2178 one of dylib, framework, or static",
2184 if kind == Some(cstore::NativeStaticNobundle) && !nightly_options::is_nightly_build() {
2188 "the library kind 'static-nobundle' is only \
2189 accepted on the nightly compiler"
2193 let mut name_parts = name.splitn(2, ':');
2194 let name = name_parts.next().unwrap();
2195 let new_name = name_parts.next();
2196 (name.to_owned(), new_name.map(|n| n.to_owned()), kind)
2200 let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
2201 let test = matches.opt_present("test");
2203 let is_unstable_enabled = nightly_options::is_unstable_enabled(matches);
2205 prints.extend(matches.opt_strs("print").into_iter().map(|s| match &*s {
2206 "crate-name" => PrintRequest::CrateName,
2207 "file-names" => PrintRequest::FileNames,
2208 "sysroot" => PrintRequest::Sysroot,
2209 "cfg" => PrintRequest::Cfg,
2210 "target-list" => PrintRequest::TargetList,
2211 "target-cpus" => PrintRequest::TargetCPUs,
2212 "target-features" => PrintRequest::TargetFeatures,
2213 "relocation-models" => PrintRequest::RelocationModels,
2214 "code-models" => PrintRequest::CodeModels,
2215 "tls-models" => PrintRequest::TlsModels,
2216 "native-static-libs" => PrintRequest::NativeStaticLibs,
2217 "target-spec-json" => {
2218 if is_unstable_enabled {
2219 PrintRequest::TargetSpec
2223 "the `-Z unstable-options` flag must also be passed to \
2224 enable the target-spec-json print option",
2228 req => early_error(error_format, &format!("unknown print request `{}`", req)),
2231 let borrowck_mode = match debugging_opts.borrowck.as_ref().map(|s| &s[..]) {
2232 None | Some("ast") => BorrowckMode::Ast,
2233 Some("mir") => BorrowckMode::Mir,
2234 Some("compare") => BorrowckMode::Compare,
2235 Some("migrate") => BorrowckMode::Migrate,
2236 Some(m) => early_error(error_format, &format!("unknown borrowck mode `{}`", m)),
2239 if !cg.remark.is_empty() && debuginfo == DebugInfo::None {
2242 "-C remark requires \"-C debuginfo=n\" to show source locations",
2246 if matches.opt_present("extern-private") && !debugging_opts.unstable_options {
2248 ErrorOutputType::default(),
2249 "'--extern-private' is unstable and only \
2250 available for nightly builds of rustc."
2254 let extern_private = matches.opt_strs("extern-private");
2256 let mut externs: BTreeMap<_, BTreeSet<_>> = BTreeMap::new();
2257 for arg in matches.opt_strs("extern").into_iter().chain(matches.opt_strs("extern-private")) {
2258 let mut parts = arg.splitn(2, '=');
2259 let name = parts.next().unwrap_or_else(||
2260 early_error(error_format, "--extern value must not be empty"));
2261 let location = parts.next().map(|s| s.to_string());
2262 if location.is_none() && !is_unstable_enabled {
2265 "the `-Z unstable-options` flag must also be passed to \
2266 enable `--extern crate_name` without `=path`",
2271 .entry(name.to_owned())
2276 let crate_name = matches.opt_str("crate-name");
2278 let remap_path_prefix = matches
2279 .opt_strs("remap-path-prefix")
2282 let mut parts = remap.rsplitn(2, '='); // reverse iterator
2283 let to = parts.next();
2284 let from = parts.next();
2286 (Some(from), Some(to)) => (PathBuf::from(from), PathBuf::from(to)),
2289 "--remap-path-prefix must contain '=' between FROM and TO",
2298 optimize: opt_level,
2303 output_types: OutputTypes(output_types),
2305 maybe_sysroot: sysroot_opt,
2314 externs: Externs(externs),
2318 unstable_features: UnstableFeatures::from_environment(),
2320 actually_rustdoc: false,
2321 cli_forced_codegen_units: codegen_units,
2322 cli_forced_thinlto_off: disable_thinlto,
2331 pub fn parse_crate_types_from_list(list_list: Vec<String>) -> Result<Vec<CrateType>, String> {
2332 let mut crate_types: Vec<CrateType> = Vec::new();
2333 for unparsed_crate_type in &list_list {
2334 for part in unparsed_crate_type.split(',') {
2335 let new_part = match part {
2336 "lib" => default_lib_output(),
2337 "rlib" => CrateType::Rlib,
2338 "staticlib" => CrateType::Staticlib,
2339 "dylib" => CrateType::Dylib,
2340 "cdylib" => CrateType::Cdylib,
2341 "bin" => CrateType::Executable,
2342 "proc-macro" => CrateType::ProcMacro,
2343 _ => return Err(format!("unknown crate type: `{}`", part))
2345 if !crate_types.contains(&new_part) {
2346 crate_types.push(new_part)
2354 pub mod nightly_options {
2356 use syntax::feature_gate::UnstableFeatures;
2357 use super::{ErrorOutputType, OptionStability, RustcOptGroup};
2358 use crate::session::early_error;
2360 pub fn is_unstable_enabled(matches: &getopts::Matches) -> bool {
2365 .any(|x| *x == "unstable-options")
2368 pub fn is_nightly_build() -> bool {
2369 UnstableFeatures::from_environment().is_nightly_build()
2372 pub fn check_nightly_options(matches: &getopts::Matches, flags: &[RustcOptGroup]) {
2373 let has_z_unstable_option = matches
2376 .any(|x| *x == "unstable-options");
2377 let really_allows_unstable_options =
2378 UnstableFeatures::from_environment().is_nightly_build();
2380 for opt in flags.iter() {
2381 if opt.stability == OptionStability::Stable {
2384 if !matches.opt_present(opt.name) {
2387 if opt.name != "Z" && !has_z_unstable_option {
2389 ErrorOutputType::default(),
2391 "the `-Z unstable-options` flag must also be passed to enable \
2397 if really_allows_unstable_options {
2400 match opt.stability {
2401 OptionStability::Unstable => {
2403 "the option `{}` is only accepted on the \
2407 early_error(ErrorOutputType::default(), &msg);
2409 OptionStability::Stable => {}
2415 impl fmt::Display for CrateType {
2416 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
2418 CrateType::Executable => "bin".fmt(f),
2419 CrateType::Dylib => "dylib".fmt(f),
2420 CrateType::Rlib => "rlib".fmt(f),
2421 CrateType::Staticlib => "staticlib".fmt(f),
2422 CrateType::Cdylib => "cdylib".fmt(f),
2423 CrateType::ProcMacro => "proc-macro".fmt(f),
2428 /// Command-line arguments passed to the compiler have to be incorporated with
2429 /// the dependency tracking system for incremental compilation. This module
2430 /// provides some utilities to make this more convenient.
2432 /// The values of all command-line arguments that are relevant for dependency
2433 /// tracking are hashed into a single value that determines whether the
2434 /// incremental compilation cache can be re-used or not. This hashing is done
2435 /// via the DepTrackingHash trait defined below, since the standard Hash
2436 /// implementation might not be suitable (e.g., arguments are stored in a Vec,
2437 /// the hash of which is order dependent, but we might not want the order of
2438 /// arguments to make a difference for the hash).
2440 /// However, since the value provided by Hash::hash often *is* suitable,
2441 /// especially for primitive types, there is the
2442 /// impl_dep_tracking_hash_via_hash!() macro that allows to simply reuse the
2443 /// Hash implementation for DepTrackingHash. It's important though that
2444 /// we have an opt-in scheme here, so one is hopefully forced to think about
2445 /// how the hash should be calculated when adding a new command-line argument.
2448 use crate::middle::cstore;
2449 use std::collections::BTreeMap;
2450 use std::hash::Hash;
2451 use std::path::PathBuf;
2452 use std::collections::hash_map::DefaultHasher;
2453 use super::{CrateType, DebugInfo, ErrorOutputType, OptLevel, OutputTypes,
2454 Passes, Sanitizer, LtoCli, LinkerPluginLto};
2455 use syntax::feature_gate::UnstableFeatures;
2456 use rustc_target::spec::{MergeFunctions, PanicStrategy, RelroLevel, TargetTriple};
2457 use syntax::edition::Edition;
2459 pub trait DepTrackingHash {
2460 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType);
2463 macro_rules! impl_dep_tracking_hash_via_hash {
2465 impl DepTrackingHash for $t {
2466 fn hash(&self, hasher: &mut DefaultHasher, _: ErrorOutputType) {
2467 Hash::hash(self, hasher);
2473 macro_rules! impl_dep_tracking_hash_for_sortable_vec_of {
2475 impl DepTrackingHash for Vec<$t> {
2476 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2477 let mut elems: Vec<&$t> = self.iter().collect();
2479 Hash::hash(&elems.len(), hasher);
2480 for (index, elem) in elems.iter().enumerate() {
2481 Hash::hash(&index, hasher);
2482 DepTrackingHash::hash(*elem, hasher, error_format);
2489 impl_dep_tracking_hash_via_hash!(bool);
2490 impl_dep_tracking_hash_via_hash!(usize);
2491 impl_dep_tracking_hash_via_hash!(u64);
2492 impl_dep_tracking_hash_via_hash!(String);
2493 impl_dep_tracking_hash_via_hash!(PathBuf);
2494 impl_dep_tracking_hash_via_hash!(lint::Level);
2495 impl_dep_tracking_hash_via_hash!(Option<bool>);
2496 impl_dep_tracking_hash_via_hash!(Option<usize>);
2497 impl_dep_tracking_hash_via_hash!(Option<String>);
2498 impl_dep_tracking_hash_via_hash!(Option<(String, u64)>);
2499 impl_dep_tracking_hash_via_hash!(Option<Vec<String>>);
2500 impl_dep_tracking_hash_via_hash!(Option<MergeFunctions>);
2501 impl_dep_tracking_hash_via_hash!(Option<PanicStrategy>);
2502 impl_dep_tracking_hash_via_hash!(Option<RelroLevel>);
2503 impl_dep_tracking_hash_via_hash!(Option<lint::Level>);
2504 impl_dep_tracking_hash_via_hash!(Option<PathBuf>);
2505 impl_dep_tracking_hash_via_hash!(Option<cstore::NativeLibraryKind>);
2506 impl_dep_tracking_hash_via_hash!(CrateType);
2507 impl_dep_tracking_hash_via_hash!(MergeFunctions);
2508 impl_dep_tracking_hash_via_hash!(PanicStrategy);
2509 impl_dep_tracking_hash_via_hash!(RelroLevel);
2510 impl_dep_tracking_hash_via_hash!(Passes);
2511 impl_dep_tracking_hash_via_hash!(OptLevel);
2512 impl_dep_tracking_hash_via_hash!(LtoCli);
2513 impl_dep_tracking_hash_via_hash!(DebugInfo);
2514 impl_dep_tracking_hash_via_hash!(UnstableFeatures);
2515 impl_dep_tracking_hash_via_hash!(OutputTypes);
2516 impl_dep_tracking_hash_via_hash!(cstore::NativeLibraryKind);
2517 impl_dep_tracking_hash_via_hash!(Sanitizer);
2518 impl_dep_tracking_hash_via_hash!(Option<Sanitizer>);
2519 impl_dep_tracking_hash_via_hash!(TargetTriple);
2520 impl_dep_tracking_hash_via_hash!(Edition);
2521 impl_dep_tracking_hash_via_hash!(LinkerPluginLto);
2523 impl_dep_tracking_hash_for_sortable_vec_of!(String);
2524 impl_dep_tracking_hash_for_sortable_vec_of!(PathBuf);
2525 impl_dep_tracking_hash_for_sortable_vec_of!(CrateType);
2526 impl_dep_tracking_hash_for_sortable_vec_of!((String, lint::Level));
2527 impl_dep_tracking_hash_for_sortable_vec_of!((
2530 Option<cstore::NativeLibraryKind>
2532 impl_dep_tracking_hash_for_sortable_vec_of!((String, u64));
2534 impl<T1, T2> DepTrackingHash for (T1, T2)
2536 T1: DepTrackingHash,
2537 T2: DepTrackingHash,
2539 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2540 Hash::hash(&0, hasher);
2541 DepTrackingHash::hash(&self.0, hasher, error_format);
2542 Hash::hash(&1, hasher);
2543 DepTrackingHash::hash(&self.1, hasher, error_format);
2547 impl<T1, T2, T3> DepTrackingHash for (T1, T2, T3)
2549 T1: DepTrackingHash,
2550 T2: DepTrackingHash,
2551 T3: DepTrackingHash,
2553 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2554 Hash::hash(&0, hasher);
2555 DepTrackingHash::hash(&self.0, hasher, error_format);
2556 Hash::hash(&1, hasher);
2557 DepTrackingHash::hash(&self.1, hasher, error_format);
2558 Hash::hash(&2, hasher);
2559 DepTrackingHash::hash(&self.2, hasher, error_format);
2563 // This is a stable hash because BTreeMap is a sorted container
2565 sub_hashes: BTreeMap<&'static str, &dyn DepTrackingHash>,
2566 hasher: &mut DefaultHasher,
2567 error_format: ErrorOutputType,
2569 for (key, sub_hash) in sub_hashes {
2570 // Using Hash::hash() instead of DepTrackingHash::hash() is fine for
2571 // the keys, as they are just plain strings
2572 Hash::hash(&key.len(), hasher);
2573 Hash::hash(key, hasher);
2574 sub_hash.hash(hasher, error_format);
2583 use crate::middle::cstore;
2584 use crate::session::config::{build_configuration, build_session_options_and_crate_config};
2585 use crate::session::config::{LtoCli, LinkerPluginLto};
2586 use crate::session::build_session;
2587 use crate::session::search_paths::SearchPath;
2588 use std::collections::{BTreeMap, BTreeSet};
2589 use std::iter::FromIterator;
2590 use std::path::PathBuf;
2591 use super::{Externs, OutputType, OutputTypes};
2592 use rustc_target::spec::{MergeFunctions, PanicStrategy, RelroLevel};
2593 use syntax::symbol::Symbol;
2594 use syntax::edition::{Edition, DEFAULT_EDITION};
2598 fn optgroups() -> getopts::Options {
2599 let mut opts = getopts::Options::new();
2600 for group in super::rustc_optgroups() {
2601 (group.apply)(&mut opts);
2606 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
2607 BTreeMap::from_iter(entries.into_iter())
2610 fn mk_set<V: Ord>(entries: Vec<V>) -> BTreeSet<V> {
2611 BTreeSet::from_iter(entries.into_iter())
2614 // When the user supplies --test we should implicitly supply --cfg test
2616 fn test_switch_implies_cfg_test() {
2617 syntax::with_globals(|| {
2618 let matches = &match optgroups().parse(&["--test".to_string()]) {
2620 Err(f) => panic!("test_switch_implies_cfg_test: {}", f),
2622 let registry = errors::registry::Registry::new(&[]);
2623 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2624 let sess = build_session(sessopts, None, registry);
2625 let cfg = build_configuration(&sess, cfg);
2626 assert!(cfg.contains(&(Symbol::intern("test"), None)));
2630 // When the user supplies --test and --cfg test, don't implicitly add
2631 // another --cfg test
2633 fn test_switch_implies_cfg_test_unless_cfg_test() {
2634 syntax::with_globals(|| {
2635 let matches = &match optgroups().parse(&["--test".to_string(),
2636 "--cfg=test".to_string()]) {
2638 Err(f) => panic!("test_switch_implies_cfg_test_unless_cfg_test: {}", f),
2640 let registry = errors::registry::Registry::new(&[]);
2641 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2642 let sess = build_session(sessopts, None, registry);
2643 let cfg = build_configuration(&sess, cfg);
2644 let mut test_items = cfg.iter().filter(|&&(name, _)| name == "test");
2645 assert!(test_items.next().is_some());
2646 assert!(test_items.next().is_none());
2651 fn test_can_print_warnings() {
2652 syntax::with_globals(|| {
2653 let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
2654 let registry = errors::registry::Registry::new(&[]);
2655 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2656 let sess = build_session(sessopts, None, registry);
2657 assert!(!sess.diagnostic().flags.can_emit_warnings);
2660 syntax::with_globals(|| {
2661 let matches = optgroups()
2662 .parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()])
2664 let registry = errors::registry::Registry::new(&[]);
2665 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2666 let sess = build_session(sessopts, None, registry);
2667 assert!(sess.diagnostic().flags.can_emit_warnings);
2670 syntax::with_globals(|| {
2671 let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
2672 let registry = errors::registry::Registry::new(&[]);
2673 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2674 let sess = build_session(sessopts, None, registry);
2675 assert!(sess.diagnostic().flags.can_emit_warnings);
2680 fn test_output_types_tracking_hash_different_paths() {
2681 let mut v1 = Options::default();
2682 let mut v2 = Options::default();
2683 let mut v3 = Options::default();
2686 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("./some/thing")))]);
2688 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("/some/thing")))]);
2689 v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
2691 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2692 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2693 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2696 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2697 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2698 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2702 fn test_output_types_tracking_hash_different_construction_order() {
2703 let mut v1 = Options::default();
2704 let mut v2 = Options::default();
2706 v1.output_types = OutputTypes::new(&[
2707 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2708 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2711 v2.output_types = OutputTypes::new(&[
2712 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2713 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2716 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2719 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2723 fn test_externs_tracking_hash_different_construction_order() {
2724 let mut v1 = Options::default();
2725 let mut v2 = Options::default();
2726 let mut v3 = Options::default();
2728 v1.externs = Externs::new(mk_map(vec![
2731 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2735 mk_set(vec![Some(String::from("e")), Some(String::from("f"))]),
2739 v2.externs = Externs::new(mk_map(vec![
2742 mk_set(vec![Some(String::from("e")), Some(String::from("f"))]),
2746 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2750 v3.externs = Externs::new(mk_map(vec![
2753 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2757 mk_set(vec![Some(String::from("f")), Some(String::from("e"))]),
2761 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2762 assert_eq!(v1.dep_tracking_hash(), v3.dep_tracking_hash());
2763 assert_eq!(v2.dep_tracking_hash(), v3.dep_tracking_hash());
2766 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2767 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2768 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2772 fn test_lints_tracking_hash_different_values() {
2773 let mut v1 = Options::default();
2774 let mut v2 = Options::default();
2775 let mut v3 = Options::default();
2777 v1.lint_opts = vec![
2778 (String::from("a"), lint::Allow),
2779 (String::from("b"), lint::Warn),
2780 (String::from("c"), lint::Deny),
2781 (String::from("d"), lint::Forbid),
2784 v2.lint_opts = vec![
2785 (String::from("a"), lint::Allow),
2786 (String::from("b"), lint::Warn),
2787 (String::from("X"), lint::Deny),
2788 (String::from("d"), lint::Forbid),
2791 v3.lint_opts = vec![
2792 (String::from("a"), lint::Allow),
2793 (String::from("b"), lint::Warn),
2794 (String::from("c"), lint::Forbid),
2795 (String::from("d"), lint::Deny),
2798 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2799 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2800 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2803 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2804 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2805 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2809 fn test_lints_tracking_hash_different_construction_order() {
2810 let mut v1 = Options::default();
2811 let mut v2 = Options::default();
2813 v1.lint_opts = vec![
2814 (String::from("a"), lint::Allow),
2815 (String::from("b"), lint::Warn),
2816 (String::from("c"), lint::Deny),
2817 (String::from("d"), lint::Forbid),
2820 v2.lint_opts = vec![
2821 (String::from("a"), lint::Allow),
2822 (String::from("c"), lint::Deny),
2823 (String::from("b"), lint::Warn),
2824 (String::from("d"), lint::Forbid),
2827 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2830 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2831 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2835 fn test_search_paths_tracking_hash_different_order() {
2836 let mut v1 = Options::default();
2837 let mut v2 = Options::default();
2838 let mut v3 = Options::default();
2839 let mut v4 = Options::default();
2843 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2845 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2847 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2849 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2851 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2854 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2856 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2858 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2860 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2862 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2865 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2867 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2869 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2871 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2873 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2876 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2878 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2880 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2882 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2884 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2886 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2887 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2888 assert!(v1.dep_tracking_hash() == v4.dep_tracking_hash());
2891 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2892 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2893 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2894 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2898 fn test_native_libs_tracking_hash_different_values() {
2899 let mut v1 = Options::default();
2900 let mut v2 = Options::default();
2901 let mut v3 = Options::default();
2902 let mut v4 = Options::default();
2906 (String::from("a"), None, Some(cstore::NativeStatic)),
2907 (String::from("b"), None, Some(cstore::NativeFramework)),
2908 (String::from("c"), None, Some(cstore::NativeUnknown)),
2913 (String::from("a"), None, Some(cstore::NativeStatic)),
2914 (String::from("X"), None, Some(cstore::NativeFramework)),
2915 (String::from("c"), None, Some(cstore::NativeUnknown)),
2920 (String::from("a"), None, Some(cstore::NativeStatic)),
2921 (String::from("b"), None, Some(cstore::NativeStatic)),
2922 (String::from("c"), None, Some(cstore::NativeUnknown)),
2927 (String::from("a"), None, Some(cstore::NativeStatic)),
2930 Some(String::from("X")),
2931 Some(cstore::NativeFramework),
2933 (String::from("c"), None, Some(cstore::NativeUnknown)),
2936 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2937 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2938 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
2941 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2942 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2943 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2944 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2948 fn test_native_libs_tracking_hash_different_order() {
2949 let mut v1 = Options::default();
2950 let mut v2 = Options::default();
2951 let mut v3 = Options::default();
2955 (String::from("a"), None, Some(cstore::NativeStatic)),
2956 (String::from("b"), None, Some(cstore::NativeFramework)),
2957 (String::from("c"), None, Some(cstore::NativeUnknown)),
2961 (String::from("b"), None, Some(cstore::NativeFramework)),
2962 (String::from("a"), None, Some(cstore::NativeStatic)),
2963 (String::from("c"), None, Some(cstore::NativeUnknown)),
2967 (String::from("c"), None, Some(cstore::NativeUnknown)),
2968 (String::from("a"), None, Some(cstore::NativeStatic)),
2969 (String::from("b"), None, Some(cstore::NativeFramework)),
2972 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2973 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2974 assert!(v2.dep_tracking_hash() == v3.dep_tracking_hash());
2977 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2978 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2979 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2983 fn test_codegen_options_tracking_hash() {
2984 let reference = Options::default();
2985 let mut opts = Options::default();
2987 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
2988 opts.cg.ar = Some(String::from("abc"));
2989 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2991 opts.cg.linker = Some(PathBuf::from("linker"));
2992 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2994 opts.cg.link_args = Some(vec![String::from("abc"), String::from("def")]);
2995 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2997 opts.cg.link_dead_code = true;
2998 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3000 opts.cg.rpath = true;
3001 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3003 opts.cg.extra_filename = String::from("extra-filename");
3004 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3006 opts.cg.codegen_units = Some(42);
3007 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3009 opts.cg.remark = super::Passes::Some(vec![String::from("pass1"), String::from("pass2")]);
3010 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3012 opts.cg.save_temps = true;
3013 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3015 opts.cg.incremental = Some(String::from("abc"));
3016 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3018 // Make sure changing a [TRACKED] option changes the hash
3019 opts = reference.clone();
3020 opts.cg.lto = LtoCli::Fat;
3021 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3023 opts = reference.clone();
3024 opts.cg.target_cpu = Some(String::from("abc"));
3025 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3027 opts = reference.clone();
3028 opts.cg.target_feature = String::from("all the features, all of them");
3029 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3031 opts = reference.clone();
3032 opts.cg.passes = vec![String::from("1"), String::from("2")];
3033 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3035 opts = reference.clone();
3036 opts.cg.llvm_args = vec![String::from("1"), String::from("2")];
3037 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3039 opts = reference.clone();
3040 opts.cg.overflow_checks = Some(true);
3041 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3043 opts = reference.clone();
3044 opts.cg.no_prepopulate_passes = true;
3045 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3047 opts = reference.clone();
3048 opts.cg.no_vectorize_loops = true;
3049 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3051 opts = reference.clone();
3052 opts.cg.no_vectorize_slp = true;
3053 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3055 opts = reference.clone();
3056 opts.cg.soft_float = true;
3057 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3059 opts = reference.clone();
3060 opts.cg.prefer_dynamic = true;
3061 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3063 opts = reference.clone();
3064 opts.cg.no_integrated_as = true;
3065 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3067 opts = reference.clone();
3068 opts.cg.no_redzone = Some(true);
3069 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3071 opts = reference.clone();
3072 opts.cg.relocation_model = Some(String::from("relocation model"));
3073 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3075 opts = reference.clone();
3076 opts.cg.code_model = Some(String::from("code model"));
3077 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3079 opts = reference.clone();
3080 opts.debugging_opts.tls_model = Some(String::from("tls model"));
3081 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3083 opts = reference.clone();
3084 opts.debugging_opts.pgo_gen = Some(String::from("abc"));
3085 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3087 opts = reference.clone();
3088 opts.debugging_opts.pgo_use = String::from("abc");
3089 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3091 opts = reference.clone();
3092 opts.cg.metadata = vec![String::from("A"), String::from("B")];
3093 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3095 opts = reference.clone();
3096 opts.cg.debuginfo = Some(0xdeadbeef);
3097 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3099 opts = reference.clone();
3100 opts.cg.debuginfo = Some(0xba5eba11);
3101 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3103 opts = reference.clone();
3104 opts.cg.force_frame_pointers = Some(false);
3105 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3107 opts = reference.clone();
3108 opts.cg.debug_assertions = Some(true);
3109 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3111 opts = reference.clone();
3112 opts.cg.inline_threshold = Some(0xf007ba11);
3113 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3115 opts = reference.clone();
3116 opts.cg.panic = Some(PanicStrategy::Abort);
3117 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3119 opts = reference.clone();
3120 opts.cg.linker_plugin_lto = LinkerPluginLto::LinkerPluginAuto;
3121 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3125 fn test_debugging_options_tracking_hash() {
3126 let reference = Options::default();
3127 let mut opts = Options::default();
3129 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
3130 opts.debugging_opts.verbose = true;
3131 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3132 opts.debugging_opts.time_passes = true;
3133 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3134 opts.debugging_opts.count_llvm_insns = true;
3135 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3136 opts.debugging_opts.time_llvm_passes = true;
3137 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3138 opts.debugging_opts.input_stats = true;
3139 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3140 opts.debugging_opts.codegen_stats = true;
3141 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3142 opts.debugging_opts.borrowck_stats = true;
3143 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3144 opts.debugging_opts.meta_stats = true;
3145 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3146 opts.debugging_opts.print_link_args = true;
3147 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3148 opts.debugging_opts.print_llvm_passes = true;
3149 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3150 opts.debugging_opts.ast_json = true;
3151 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3152 opts.debugging_opts.ast_json_noexpand = true;
3153 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3154 opts.debugging_opts.ls = true;
3155 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3156 opts.debugging_opts.save_analysis = true;
3157 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3158 opts.debugging_opts.flowgraph_print_loans = true;
3159 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3160 opts.debugging_opts.flowgraph_print_moves = true;
3161 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3162 opts.debugging_opts.flowgraph_print_assigns = true;
3163 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3164 opts.debugging_opts.flowgraph_print_all = true;
3165 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3166 opts.debugging_opts.print_region_graph = true;
3167 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3168 opts.debugging_opts.parse_only = true;
3169 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3170 opts.debugging_opts.incremental = Some(String::from("abc"));
3171 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3172 opts.debugging_opts.dump_dep_graph = true;
3173 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3174 opts.debugging_opts.query_dep_graph = true;
3175 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3176 opts.debugging_opts.no_analysis = true;
3177 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3178 opts.debugging_opts.unstable_options = true;
3179 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3180 opts.debugging_opts.trace_macros = true;
3181 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3182 opts.debugging_opts.keep_hygiene_data = true;
3183 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3184 opts.debugging_opts.keep_ast = true;
3185 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3186 opts.debugging_opts.print_mono_items = Some(String::from("abc"));
3187 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3188 opts.debugging_opts.dump_mir = Some(String::from("abc"));
3189 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3190 opts.debugging_opts.dump_mir_dir = String::from("abc");
3191 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3192 opts.debugging_opts.dump_mir_graphviz = true;
3193 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3195 // Make sure changing a [TRACKED] option changes the hash
3196 opts = reference.clone();
3197 opts.debugging_opts.asm_comments = true;
3198 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3200 opts = reference.clone();
3201 opts.debugging_opts.verify_llvm_ir = true;
3202 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3204 opts = reference.clone();
3205 opts.debugging_opts.no_landing_pads = true;
3206 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3208 opts = reference.clone();
3209 opts.debugging_opts.fewer_names = true;
3210 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3212 opts = reference.clone();
3213 opts.debugging_opts.no_codegen = true;
3214 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3216 opts = reference.clone();
3217 opts.debugging_opts.treat_err_as_bug = true;
3218 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3220 opts = reference.clone();
3221 opts.debugging_opts.report_delayed_bugs = true;
3222 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3224 opts = reference.clone();
3225 opts.debugging_opts.continue_parse_after_error = true;
3226 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3228 opts = reference.clone();
3229 opts.debugging_opts.extra_plugins = vec![String::from("plugin1"), String::from("plugin2")];
3230 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3232 opts = reference.clone();
3233 opts.debugging_opts.force_overflow_checks = Some(true);
3234 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3236 opts = reference.clone();
3237 opts.debugging_opts.show_span = Some(String::from("abc"));
3238 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3240 opts = reference.clone();
3241 opts.debugging_opts.mir_opt_level = 3;
3242 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3244 opts = reference.clone();
3245 opts.debugging_opts.relro_level = Some(RelroLevel::Full);
3246 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3248 opts = reference.clone();
3249 opts.debugging_opts.merge_functions = Some(MergeFunctions::Disabled);
3250 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3254 fn test_edition_parsing() {
3255 // test default edition
3256 let options = Options::default();
3257 assert!(options.edition == DEFAULT_EDITION);
3259 let matches = optgroups()
3260 .parse(&["--edition=2018".to_string()])
3262 let (sessopts, _) = build_session_options_and_crate_config(&matches);
3263 assert!(sessopts.edition == Edition::Edition2018)