1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! Contains infrastructure for configuring the compiler, including parsing
12 //! command line options.
14 pub use self::EntryFnType::*;
15 pub use self::CrateType::*;
16 pub use self::Passes::*;
17 pub use self::DebugInfoLevel::*;
19 use std::str::FromStr;
21 use session::{early_error, early_warn, Session};
22 use session::search_paths::SearchPaths;
24 use ich::StableHashingContext;
25 use rustc_target::spec::{LinkerFlavor, PanicStrategy, RelroLevel};
26 use rustc_target::spec::{Target, TargetTriple};
27 use rustc_data_structures::stable_hasher::ToStableHashKey;
31 use syntax::ast::{self, IntTy, UintTy};
32 use syntax::codemap::{FileName, FilePathMapping};
33 use syntax::edition::{Edition, EDITION_NAME_LIST, DEFAULT_EDITION};
34 use syntax::parse::token;
36 use syntax::symbol::Symbol;
37 use syntax::feature_gate::UnstableFeatures;
39 use errors::{ColorConfig, FatalError, Handler};
42 use std::collections::{BTreeMap, BTreeSet};
43 use std::collections::btree_map::Iter as BTreeMapIter;
44 use std::collections::btree_map::Keys as BTreeMapKeysIter;
45 use std::collections::btree_map::Values as BTreeMapValuesIter;
48 use std::hash::Hasher;
49 use std::collections::hash_map::DefaultHasher;
50 use std::collections::HashSet;
51 use std::iter::FromIterator;
52 use std::path::{Path, PathBuf};
60 #[derive(Clone, Hash, Debug)]
68 #[derive(Clone, Copy, PartialEq, Hash)]
78 #[derive(Clone, Copy, PartialEq, Hash)]
80 /// Don't do any LTO whatsoever
83 /// Do a full crate graph LTO. The flavor is determined by the compiler
84 /// (currently the default is "fat").
87 /// Do a full crate graph LTO with ThinLTO
90 /// Do a local graph LTO with ThinLTO (only relevant for multiple codegen
94 /// Do a full crate graph LTO with "fat" LTO
98 #[derive(Clone, PartialEq, Hash)]
99 pub enum CrossLangLto {
100 LinkerPlugin(PathBuf),
106 pub fn embed_bitcode(&self) -> bool {
108 CrossLangLto::LinkerPlugin(_) |
109 CrossLangLto::NoLink => true,
110 CrossLangLto::Disabled => false,
115 #[derive(Clone, Copy, PartialEq, Hash)]
116 pub enum DebugInfoLevel {
122 #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, PartialOrd, Ord, RustcEncodable, RustcDecodable)]
123 pub enum OutputType {
135 impl_stable_hash_for!(enum self::OutputType {
146 impl<'a, 'tcx> ToStableHashKey<StableHashingContext<'a>> for OutputType {
147 type KeyType = OutputType;
149 fn to_stable_hash_key(&self, _: &StableHashingContext<'a>) -> Self::KeyType {
155 fn is_compatible_with_codegen_units_and_single_output_file(&self) -> bool {
157 OutputType::Exe | OutputType::DepInfo => true,
159 | OutputType::Assembly
160 | OutputType::LlvmAssembly
163 | OutputType::Metadata => false,
167 fn shorthand(&self) -> &'static str {
169 OutputType::Bitcode => "llvm-bc",
170 OutputType::Assembly => "asm",
171 OutputType::LlvmAssembly => "llvm-ir",
172 OutputType::Mir => "mir",
173 OutputType::Object => "obj",
174 OutputType::Metadata => "metadata",
175 OutputType::Exe => "link",
176 OutputType::DepInfo => "dep-info",
180 fn from_shorthand(shorthand: &str) -> Option<Self> {
181 Some(match shorthand {
182 "asm" => OutputType::Assembly,
183 "llvm-ir" => OutputType::LlvmAssembly,
184 "mir" => OutputType::Mir,
185 "llvm-bc" => OutputType::Bitcode,
186 "obj" => OutputType::Object,
187 "metadata" => OutputType::Metadata,
188 "link" => OutputType::Exe,
189 "dep-info" => OutputType::DepInfo,
194 fn shorthands_display() -> String {
196 "`{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`",
197 OutputType::Bitcode.shorthand(),
198 OutputType::Assembly.shorthand(),
199 OutputType::LlvmAssembly.shorthand(),
200 OutputType::Mir.shorthand(),
201 OutputType::Object.shorthand(),
202 OutputType::Metadata.shorthand(),
203 OutputType::Exe.shorthand(),
204 OutputType::DepInfo.shorthand(),
208 pub fn extension(&self) -> &'static str {
210 OutputType::Bitcode => "bc",
211 OutputType::Assembly => "s",
212 OutputType::LlvmAssembly => "ll",
213 OutputType::Mir => "mir",
214 OutputType::Object => "o",
215 OutputType::Metadata => "rmeta",
216 OutputType::DepInfo => "d",
217 OutputType::Exe => "",
222 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
223 pub enum ErrorOutputType {
224 HumanReadable(ColorConfig),
229 impl Default for ErrorOutputType {
230 fn default() -> ErrorOutputType {
231 ErrorOutputType::HumanReadable(ColorConfig::Auto)
235 // Use tree-based collections to cheaply get a deterministic Hash implementation.
236 // DO NOT switch BTreeMap out for an unsorted container type! That would break
237 // dependency tracking for commandline arguments.
238 #[derive(Clone, Hash)]
239 pub struct OutputTypes(BTreeMap<OutputType, Option<PathBuf>>);
241 impl_stable_hash_for!(tuple_struct self::OutputTypes {
246 pub fn new(entries: &[(OutputType, Option<PathBuf>)]) -> OutputTypes {
247 OutputTypes(BTreeMap::from_iter(
248 entries.iter().map(|&(k, ref v)| (k, v.clone())),
252 pub fn get(&self, key: &OutputType) -> Option<&Option<PathBuf>> {
256 pub fn contains_key(&self, key: &OutputType) -> bool {
257 self.0.contains_key(key)
260 pub fn keys<'a>(&'a self) -> BTreeMapKeysIter<'a, OutputType, Option<PathBuf>> {
264 pub fn values<'a>(&'a self) -> BTreeMapValuesIter<'a, OutputType, Option<PathBuf>> {
268 pub fn len(&self) -> usize {
272 // True if any of the output types require codegen or linking.
273 pub fn should_codegen(&self) -> bool {
274 self.0.keys().any(|k| match *k {
276 | OutputType::Assembly
277 | OutputType::LlvmAssembly
280 | OutputType::Exe => true,
281 OutputType::Metadata | OutputType::DepInfo => false,
286 // Use tree-based collections to cheaply get a deterministic Hash implementation.
287 // DO NOT switch BTreeMap or BTreeSet out for an unsorted container type! That
288 // would break dependency tracking for commandline arguments.
289 #[derive(Clone, Hash)]
290 pub struct Externs(BTreeMap<String, BTreeSet<String>>);
293 pub fn new(data: BTreeMap<String, BTreeSet<String>>) -> Externs {
297 pub fn get(&self, key: &str) -> Option<&BTreeSet<String>> {
301 pub fn iter<'a>(&'a self) -> BTreeMapIter<'a, String, BTreeSet<String>> {
306 macro_rules! hash_option {
307 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [UNTRACKED]) => ({});
308 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [TRACKED]) => ({
309 if $sub_hashes.insert(stringify!($opt_name),
310 $opt_expr as &dyn dep_tracking::DepTrackingHash).is_some() {
311 bug!("Duplicate key in CLI DepTrackingHash: {}", stringify!($opt_name))
317 [UNTRACKED_WITH_WARNING $warn_val:expr, $warn_text:expr, $error_format:expr]) => ({
318 if *$opt_expr == $warn_val {
319 early_warn($error_format, $warn_text)
324 macro_rules! top_level_options {
325 (pub struct Options { $(
326 $opt:ident : $t:ty [$dep_tracking_marker:ident $($warn_val:expr, $warn_text:expr)*],
334 pub fn dep_tracking_hash(&self) -> u64 {
335 let mut sub_hashes = BTreeMap::new();
340 [$dep_tracking_marker $($warn_val,
342 self.error_format)*]);
344 let mut hasher = DefaultHasher::new();
345 dep_tracking::stable_hash(sub_hashes,
354 // The top-level commandline options struct
356 // For each option, one has to specify how it behaves with regard to the
357 // dependency tracking system of incremental compilation. This is done via the
358 // square-bracketed directive after the field type. The options are:
361 // A change in the given field will cause the compiler to completely clear the
362 // incremental compilation cache before proceeding.
365 // Incremental compilation is not influenced by this option.
367 // [UNTRACKED_WITH_WARNING(val, warning)]
368 // The option is incompatible with incremental compilation in some way. If it
369 // has the value `val`, the string `warning` is emitted as a warning.
371 // If you add a new option to this struct or one of the sub-structs like
372 // CodegenOptions, think about how it influences incremental compilation. If in
373 // doubt, specify [TRACKED], which is always "correct" but might lead to
374 // unnecessary re-compilation.
377 // The crate config requested for the session, which may be combined
378 // with additional crate configurations during the compile process
379 crate_types: Vec<CrateType> [TRACKED],
380 optimize: OptLevel [TRACKED],
381 // Include the debug_assertions flag into dependency tracking, since it
382 // can influence whether overflow checks are done or not.
383 debug_assertions: bool [TRACKED],
384 debuginfo: DebugInfoLevel [TRACKED],
385 lint_opts: Vec<(String, lint::Level)> [TRACKED],
386 lint_cap: Option<lint::Level> [TRACKED],
387 describe_lints: bool [UNTRACKED],
388 output_types: OutputTypes [TRACKED],
389 search_paths: SearchPaths [UNTRACKED],
390 libs: Vec<(String, Option<String>, Option<cstore::NativeLibraryKind>)> [TRACKED],
391 maybe_sysroot: Option<PathBuf> [TRACKED],
393 target_triple: TargetTriple [TRACKED],
395 test: bool [TRACKED],
396 error_format: ErrorOutputType [UNTRACKED],
398 // if Some, enable incremental compilation, using the given
399 // directory to store intermediate results
400 incremental: Option<PathBuf> [UNTRACKED],
402 debugging_opts: DebuggingOptions [TRACKED],
403 prints: Vec<PrintRequest> [UNTRACKED],
404 // Determines which borrow checker(s) to run. This is the parsed, sanitized
405 // version of `debugging_opts.borrowck`, which is just a plain string.
406 borrowck_mode: BorrowckMode [UNTRACKED],
407 cg: CodegenOptions [TRACKED],
408 externs: Externs [UNTRACKED],
409 crate_name: Option<String> [TRACKED],
410 // An optional name to use as the crate for std during std injection,
411 // written `extern crate name as std`. Defaults to `std`. Used by
412 // out-of-tree drivers.
413 alt_std_name: Option<String> [TRACKED],
414 // Indicates how the compiler should treat unstable features
415 unstable_features: UnstableFeatures [TRACKED],
417 // Indicates whether this run of the compiler is actually rustdoc. This
418 // is currently just a hack and will be removed eventually, so please
419 // try to not rely on this too much.
420 actually_rustdoc: bool [TRACKED],
422 // Specifications of codegen units / ThinLTO which are forced as a
423 // result of parsing command line options. These are not necessarily
424 // what rustc was invoked with, but massaged a bit to agree with
425 // commands like `--emit llvm-ir` which they're often incompatible with
426 // if we otherwise use the defaults of rustc.
427 cli_forced_codegen_units: Option<usize> [UNTRACKED],
428 cli_forced_thinlto_off: bool [UNTRACKED],
430 // Remap source path prefixes in all output (messages, object files, debug, etc)
431 remap_path_prefix: Vec<(PathBuf, PathBuf)> [UNTRACKED],
433 edition: Edition [TRACKED],
437 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
438 pub enum PrintRequest {
453 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
454 pub enum BorrowckMode {
461 /// Should we emit the AST-based borrow checker errors?
462 pub fn use_ast(self) -> bool {
464 BorrowckMode::Ast => true,
465 BorrowckMode::Compare => true,
466 BorrowckMode::Mir => false,
469 /// Should we emit the MIR-based borrow checker errors?
470 pub fn use_mir(self) -> bool {
472 BorrowckMode::Ast => false,
473 BorrowckMode::Compare => true,
474 BorrowckMode::Mir => true,
480 /// Load source from file
483 /// String that is shown in place of a filename
485 /// Anonymous source string
491 pub fn filestem(&self) -> String {
493 Input::File(ref ifile) => ifile.file_stem().unwrap().to_str().unwrap().to_string(),
494 Input::Str { .. } => "rust_out".to_string(),
500 pub struct OutputFilenames {
501 pub out_directory: PathBuf,
502 pub out_filestem: String,
503 pub single_output_file: Option<PathBuf>,
505 pub outputs: OutputTypes,
508 impl_stable_hash_for!(struct self::OutputFilenames {
516 pub const RUST_CGU_EXT: &str = "rcgu";
518 impl OutputFilenames {
519 pub fn path(&self, flavor: OutputType) -> PathBuf {
522 .and_then(|p| p.to_owned())
523 .or_else(|| self.single_output_file.clone())
524 .unwrap_or_else(|| self.temp_path(flavor, None))
527 /// Get the path where a compilation artifact of the given type for the
528 /// given codegen unit should be placed on disk. If codegen_unit_name is
529 /// None, a path distinct from those of any codegen unit will be generated.
530 pub fn temp_path(&self, flavor: OutputType, codegen_unit_name: Option<&str>) -> PathBuf {
531 let extension = flavor.extension();
532 self.temp_path_ext(extension, codegen_unit_name)
535 /// Like temp_path, but also supports things where there is no corresponding
536 /// OutputType, like no-opt-bitcode or lto-bitcode.
537 pub fn temp_path_ext(&self, ext: &str, codegen_unit_name: Option<&str>) -> PathBuf {
538 let base = self.out_directory.join(&self.filestem());
540 let mut extension = String::new();
542 if let Some(codegen_unit_name) = codegen_unit_name {
543 extension.push_str(codegen_unit_name);
547 if !extension.is_empty() {
548 extension.push_str(".");
549 extension.push_str(RUST_CGU_EXT);
550 extension.push_str(".");
553 extension.push_str(ext);
556 let path = base.with_extension(&extension[..]);
560 pub fn with_extension(&self, extension: &str) -> PathBuf {
562 .join(&self.filestem())
563 .with_extension(extension)
566 pub fn filestem(&self) -> String {
567 format!("{}{}", self.out_filestem, self.extra)
571 pub fn host_triple() -> &'static str {
572 // Get the host triple out of the build environment. This ensures that our
573 // idea of the host triple is the same as for the set of libraries we've
574 // actually built. We can't just take LLVM's host triple because they
575 // normalize all ix86 architectures to i386.
577 // Instead of grabbing the host triple (for the current host), we grab (at
578 // compile time) the target triple that this rustc is built with and
579 // calling that (at runtime) the host triple.
580 (option_env!("CFG_COMPILER_HOST_TRIPLE")).expect("CFG_COMPILER_HOST_TRIPLE")
583 /// Some reasonable defaults
584 pub fn basic_options() -> Options {
586 crate_types: Vec::new(),
587 optimize: OptLevel::No,
588 debuginfo: NoDebugInfo,
589 lint_opts: Vec::new(),
591 describe_lints: false,
592 output_types: OutputTypes(BTreeMap::new()),
593 search_paths: SearchPaths::new(),
595 target_triple: TargetTriple::from_triple(host_triple()),
598 debugging_opts: basic_debugging_options(),
600 borrowck_mode: BorrowckMode::Ast,
601 cg: basic_codegen_options(),
602 error_format: ErrorOutputType::default(),
603 externs: Externs(BTreeMap::new()),
607 unstable_features: UnstableFeatures::Disallow,
608 debug_assertions: true,
609 actually_rustdoc: false,
610 cli_forced_codegen_units: None,
611 cli_forced_thinlto_off: false,
612 remap_path_prefix: Vec::new(),
613 edition: DEFAULT_EDITION,
618 /// True if there is a reason to build the dep graph.
619 pub fn build_dep_graph(&self) -> bool {
620 self.incremental.is_some() || self.debugging_opts.dump_dep_graph
621 || self.debugging_opts.query_dep_graph
625 pub fn enable_dep_node_debug_strs(&self) -> bool {
626 cfg!(debug_assertions)
627 && (self.debugging_opts.query_dep_graph || self.debugging_opts.incremental_info)
630 pub fn file_path_mapping(&self) -> FilePathMapping {
631 FilePathMapping::new(self.remap_path_prefix.clone())
634 /// True if there will be an output file generated
635 pub fn will_create_output_file(&self) -> bool {
636 !self.debugging_opts.parse_only && // The file is just being parsed
637 !self.debugging_opts.ls // The file is just being queried
641 // The type of entry function, so
642 // users can have their own entry
644 #[derive(Copy, Clone, PartialEq)]
645 pub enum EntryFnType {
650 #[derive(Copy, PartialEq, PartialOrd, Clone, Ord, Eq, Hash, Debug)]
660 #[derive(Clone, Hash)]
662 SomePasses(Vec<String>),
667 pub fn is_empty(&self) -> bool {
669 SomePasses(ref v) => v.is_empty(),
675 /// Declare a macro that will define all CodegenOptions/DebuggingOptions fields and parsers all
676 /// at once. The goal of this macro is to define an interface that can be
677 /// programmatically used by the option parser in order to initialize the struct
678 /// without hardcoding field names all over the place.
680 /// The goal is to invoke this macro once with the correct fields, and then this
681 /// macro generates all necessary code. The main gotcha of this macro is the
682 /// cgsetters module which is a bunch of generated code to parse an option into
683 /// its respective field in the struct. There are a few hand-written parsers for
684 /// parsing specific types of values in this module.
685 macro_rules! options {
686 ($struct_name:ident, $setter_name:ident, $defaultfn:ident,
687 $buildfn:ident, $prefix:expr, $outputname:expr,
688 $stat:ident, $mod_desc:ident, $mod_set:ident,
689 $($opt:ident : $t:ty = (
692 [$dep_tracking_marker:ident $(($dep_warn_val:expr, $dep_warn_text:expr))*],
697 pub struct $struct_name { $(pub $opt: $t),* }
699 pub fn $defaultfn() -> $struct_name {
700 $struct_name { $($opt: $init),* }
703 pub fn $buildfn(matches: &getopts::Matches, error_format: ErrorOutputType) -> $struct_name
705 let mut op = $defaultfn();
706 for option in matches.opt_strs($prefix) {
707 let mut iter = option.splitn(2, '=');
708 let key = iter.next().unwrap();
709 let value = iter.next();
710 let option_to_lookup = key.replace("-", "_");
711 let mut found = false;
712 for &(candidate, setter, opt_type_desc, _) in $stat {
713 if option_to_lookup != candidate { continue }
714 if !setter(&mut op, value) {
715 match (value, opt_type_desc) {
716 (Some(..), None) => {
717 early_error(error_format, &format!("{} option `{}` takes no \
718 value", $outputname, key))
720 (None, Some(type_desc)) => {
721 early_error(error_format, &format!("{0} option `{1}` requires \
722 {2} ({3} {1}=<value>)",
726 (Some(value), Some(type_desc)) => {
727 early_error(error_format, &format!("incorrect value `{}` for {} \
728 option `{}` - {} was expected",
732 (None, None) => bug!()
739 early_error(error_format, &format!("unknown {} option: `{}`",
746 impl<'a> dep_tracking::DepTrackingHash for $struct_name {
748 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
749 let mut sub_hashes = BTreeMap::new();
754 [$dep_tracking_marker $($dep_warn_val,
758 dep_tracking::stable_hash(sub_hashes, hasher, error_format);
762 pub type $setter_name = fn(&mut $struct_name, v: Option<&str>) -> bool;
763 pub const $stat: &'static [(&'static str, $setter_name,
764 Option<&'static str>, &'static str)] =
765 &[ $( (stringify!($opt), $mod_set::$opt, $mod_desc::$parse, $desc) ),* ];
767 #[allow(non_upper_case_globals, dead_code)]
769 pub const parse_bool: Option<&'static str> = None;
770 pub const parse_opt_bool: Option<&'static str> =
771 Some("one of: `y`, `yes`, `on`, `n`, `no`, or `off`");
772 pub const parse_string: Option<&'static str> = Some("a string");
773 pub const parse_string_push: Option<&'static str> = Some("a string");
774 pub const parse_pathbuf_push: Option<&'static str> = Some("a path");
775 pub const parse_opt_string: Option<&'static str> = Some("a string");
776 pub const parse_opt_pathbuf: Option<&'static str> = Some("a path");
777 pub const parse_list: Option<&'static str> = Some("a space-separated list of strings");
778 pub const parse_opt_list: Option<&'static str> = Some("a space-separated list of strings");
779 pub const parse_uint: Option<&'static str> = Some("a number");
780 pub const parse_passes: Option<&'static str> =
781 Some("a space-separated list of passes, or `all`");
782 pub const parse_opt_uint: Option<&'static str> =
784 pub const parse_panic_strategy: Option<&'static str> =
785 Some("either `panic` or `abort`");
786 pub const parse_relro_level: Option<&'static str> =
787 Some("one of: `full`, `partial`, or `off`");
788 pub const parse_sanitizer: Option<&'static str> =
789 Some("one of: `address`, `leak`, `memory` or `thread`");
790 pub const parse_linker_flavor: Option<&'static str> =
791 Some(::rustc_target::spec::LinkerFlavor::one_of());
792 pub const parse_optimization_fuel: Option<&'static str> =
793 Some("crate=integer");
794 pub const parse_unpretty: Option<&'static str> =
795 Some("`string` or `string=string`");
796 pub const parse_lto: Option<&'static str> =
797 Some("one of `thin`, `fat`, or omitted");
798 pub const parse_cross_lang_lto: Option<&'static str> =
799 Some("either a boolean (`yes`, `no`, `on`, `off`, etc), `no-link`, \
800 or the path to the linker plugin");
805 use super::{$struct_name, Passes, SomePasses, AllPasses, Sanitizer, Lto,
807 use rustc_target::spec::{LinkerFlavor, PanicStrategy, RelroLevel};
808 use std::path::PathBuf;
811 pub fn $opt(cg: &mut $struct_name, v: Option<&str>) -> bool {
812 $parse(&mut cg.$opt, v)
816 fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool {
819 None => { *slot = true; true }
823 fn parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool {
827 "n" | "no" | "off" => {
830 "y" | "yes" | "on" => {
833 _ => { return false; }
838 None => { *slot = Some(true); true }
842 fn parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool {
844 Some(s) => { *slot = Some(s.to_string()); true },
849 fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, v: Option<&str>) -> bool {
851 Some(s) => { *slot = Some(PathBuf::from(s)); true },
856 fn parse_string(slot: &mut String, v: Option<&str>) -> bool {
858 Some(s) => { *slot = s.to_string(); true },
863 fn parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool {
865 Some(s) => { slot.push(s.to_string()); true },
870 fn parse_pathbuf_push(slot: &mut Vec<PathBuf>, v: Option<&str>) -> bool {
872 Some(s) => { slot.push(PathBuf::from(s)); true },
877 fn parse_list(slot: &mut Vec<String>, v: Option<&str>)
881 for s in s.split_whitespace() {
882 slot.push(s.to_string());
890 fn parse_opt_list(slot: &mut Option<Vec<String>>, v: Option<&str>)
894 let v = s.split_whitespace().map(|s| s.to_string()).collect();
902 fn parse_uint(slot: &mut usize, v: Option<&str>) -> bool {
903 match v.and_then(|s| s.parse().ok()) {
904 Some(i) => { *slot = i; true },
909 fn parse_opt_uint(slot: &mut Option<usize>, v: Option<&str>) -> bool {
911 Some(s) => { *slot = s.parse().ok(); slot.is_some() }
912 None => { *slot = None; false }
916 fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
923 let mut passes = vec![];
924 if parse_list(&mut passes, v) {
925 *slot = SomePasses(passes);
934 fn parse_panic_strategy(slot: &mut Option<PanicStrategy>, v: Option<&str>) -> bool {
936 Some("unwind") => *slot = Some(PanicStrategy::Unwind),
937 Some("abort") => *slot = Some(PanicStrategy::Abort),
943 fn parse_relro_level(slot: &mut Option<RelroLevel>, v: Option<&str>) -> bool {
946 match s.parse::<RelroLevel>() {
947 Ok(level) => *slot = Some(level),
956 fn parse_sanitizer(slote: &mut Option<Sanitizer>, v: Option<&str>) -> bool {
958 Some("address") => *slote = Some(Sanitizer::Address),
959 Some("leak") => *slote = Some(Sanitizer::Leak),
960 Some("memory") => *slote = Some(Sanitizer::Memory),
961 Some("thread") => *slote = Some(Sanitizer::Thread),
967 fn parse_linker_flavor(slote: &mut Option<LinkerFlavor>, v: Option<&str>) -> bool {
968 match v.and_then(LinkerFlavor::from_str) {
969 Some(lf) => *slote = Some(lf),
975 fn parse_optimization_fuel(slot: &mut Option<(String, u64)>, v: Option<&str>) -> bool {
979 let parts = s.split('=').collect::<Vec<_>>();
980 if parts.len() != 2 { return false; }
981 let crate_name = parts[0].to_string();
982 let fuel = parts[1].parse::<u64>();
983 if fuel.is_err() { return false; }
984 *slot = Some((crate_name, fuel.unwrap()));
990 fn parse_unpretty(slot: &mut Option<String>, v: Option<&str>) -> bool {
993 Some(s) if s.split('=').count() <= 2 => {
994 *slot = Some(s.to_string());
1001 fn parse_lto(slot: &mut Lto, v: Option<&str>) -> bool {
1004 Some("thin") => Lto::Thin,
1005 Some("fat") => Lto::Fat,
1006 Some(_) => return false,
1011 fn parse_cross_lang_lto(slot: &mut CrossLangLto, v: Option<&str>) -> bool {
1013 let mut bool_arg = None;
1014 if parse_opt_bool(&mut bool_arg, v) {
1015 *slot = if bool_arg.unwrap() {
1016 CrossLangLto::NoLink
1018 CrossLangLto::Disabled
1026 Some("no-link") => CrossLangLto::NoLink,
1027 Some(path) => CrossLangLto::LinkerPlugin(PathBuf::from(path)),
1034 options! {CodegenOptions, CodegenSetter, basic_codegen_options,
1035 build_codegen_options, "C", "codegen",
1036 CG_OPTIONS, cg_type_desc, cgsetters,
1037 ar: Option<String> = (None, parse_opt_string, [UNTRACKED],
1038 "this option is deprecated and does nothing"),
1039 linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1040 "system linker to link outputs with"),
1041 link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1042 "a single extra argument to append to the linker invocation (can be used several times)"),
1043 link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1044 "extra arguments to append to the linker invocation (space separated)"),
1045 link_dead_code: bool = (false, parse_bool, [UNTRACKED],
1046 "don't let linker strip dead code (turning it on can be used for code coverage)"),
1047 lto: Lto = (Lto::No, parse_lto, [TRACKED],
1048 "perform LLVM link-time optimizations"),
1049 target_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1050 "select target processor (rustc --print target-cpus for details)"),
1051 target_feature: String = ("".to_string(), parse_string, [TRACKED],
1052 "target specific attributes (rustc --print target-features for details)"),
1053 passes: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1054 "a list of extra LLVM passes to run (space separated)"),
1055 llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1056 "a list of arguments to pass to llvm (space separated)"),
1057 save_temps: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1058 "`-C save-temps` might not produce all requested temporary products \
1059 when incremental compilation is enabled.")],
1060 "save all temporary output files during compilation"),
1061 rpath: bool = (false, parse_bool, [UNTRACKED],
1062 "set rpath values in libs/exes"),
1063 overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1064 "use overflow checks for integer arithmetic"),
1065 no_prepopulate_passes: bool = (false, parse_bool, [TRACKED],
1066 "don't pre-populate the pass manager with a list of passes"),
1067 no_vectorize_loops: bool = (false, parse_bool, [TRACKED],
1068 "don't run the loop vectorization optimization passes"),
1069 no_vectorize_slp: bool = (false, parse_bool, [TRACKED],
1070 "don't run LLVM's SLP vectorization pass"),
1071 soft_float: bool = (false, parse_bool, [TRACKED],
1072 "use soft float ABI (*eabihf targets only)"),
1073 prefer_dynamic: bool = (false, parse_bool, [TRACKED],
1074 "prefer dynamic linking to static linking"),
1075 no_integrated_as: bool = (false, parse_bool, [TRACKED],
1076 "use an external assembler rather than LLVM's integrated one"),
1077 no_redzone: Option<bool> = (None, parse_opt_bool, [TRACKED],
1078 "disable the use of the redzone"),
1079 relocation_model: Option<String> = (None, parse_opt_string, [TRACKED],
1080 "choose the relocation model to use (rustc --print relocation-models for details)"),
1081 code_model: Option<String> = (None, parse_opt_string, [TRACKED],
1082 "choose the code model to use (rustc --print code-models for details)"),
1083 metadata: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1084 "metadata to mangle symbol names with"),
1085 extra_filename: String = ("".to_string(), parse_string, [UNTRACKED],
1086 "extra data to put in each output filename"),
1087 codegen_units: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1088 "divide crate into N units to optimize in parallel"),
1089 remark: Passes = (SomePasses(Vec::new()), parse_passes, [UNTRACKED],
1090 "print remarks for these optimization passes (space separated, or \"all\")"),
1091 no_stack_check: bool = (false, parse_bool, [UNTRACKED],
1092 "the --no-stack-check flag is deprecated and does nothing"),
1093 debuginfo: Option<usize> = (None, parse_opt_uint, [TRACKED],
1094 "debug info emission level, 0 = no debug info, 1 = line tables only, \
1095 2 = full debug info with variable and type information"),
1096 opt_level: Option<String> = (None, parse_opt_string, [TRACKED],
1097 "optimize with possible levels 0-3, s, or z"),
1098 force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
1099 "force use of the frame pointers"),
1100 debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
1101 "explicitly enable the cfg(debug_assertions) directive"),
1102 inline_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
1103 "set the threshold for inlining a function (default: 225)"),
1104 panic: Option<PanicStrategy> = (None, parse_panic_strategy,
1105 [TRACKED], "panic strategy to compile crate with"),
1106 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1107 "enable incremental compilation"),
1110 options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
1111 build_debugging_options, "Z", "debugging",
1112 DB_OPTIONS, db_type_desc, dbsetters,
1113 codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
1114 "the backend to use"),
1115 verbose: bool = (false, parse_bool, [UNTRACKED],
1116 "in general, enable more debug printouts"),
1117 span_free_formats: bool = (false, parse_bool, [UNTRACKED],
1118 "when debug-printing compiler state, do not include spans"), // o/w tests have closure@path
1119 identify_regions: bool = (false, parse_bool, [UNTRACKED],
1120 "make unnamed regions display as '# (where # is some non-ident unique id)"),
1121 emit_end_regions: bool = (false, parse_bool, [UNTRACKED],
1122 "emit EndRegion as part of MIR; enable transforms that solely process EndRegion"),
1123 borrowck: Option<String> = (None, parse_opt_string, [UNTRACKED],
1124 "select which borrowck is used (`ast`, `mir`, or `compare`)"),
1125 two_phase_borrows: bool = (false, parse_bool, [UNTRACKED],
1126 "use two-phase reserved/active distinction for `&mut` borrows in MIR borrowck"),
1127 two_phase_beyond_autoref: bool = (false, parse_bool, [UNTRACKED],
1128 "when using two-phase-borrows, allow two phases even for non-autoref `&mut` borrows"),
1129 time_passes: bool = (false, parse_bool, [UNTRACKED],
1130 "measure time of each rustc pass"),
1131 count_llvm_insns: bool = (false, parse_bool,
1132 [UNTRACKED_WITH_WARNING(true,
1133 "The output generated by `-Z count_llvm_insns` might not be reliable \
1134 when used with incremental compilation")],
1135 "count where LLVM instrs originate"),
1136 time_llvm_passes: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1137 "The output of `-Z time-llvm-passes` will only reflect timings of \
1138 re-codegened modules when used with incremental compilation" )],
1139 "measure time of each LLVM pass"),
1140 input_stats: bool = (false, parse_bool, [UNTRACKED],
1141 "gather statistics about the input"),
1142 codegen_stats: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1143 "The output of `-Z codegen-stats` might not be accurate when incremental \
1144 compilation is enabled")],
1145 "gather codegen statistics"),
1146 asm_comments: bool = (false, parse_bool, [TRACKED],
1147 "generate comments into the assembly (may change behavior)"),
1148 no_verify: bool = (false, parse_bool, [TRACKED],
1149 "skip LLVM verification"),
1150 borrowck_stats: bool = (false, parse_bool, [UNTRACKED],
1151 "gather borrowck statistics"),
1152 no_landing_pads: bool = (false, parse_bool, [TRACKED],
1153 "omit landing pads for unwinding"),
1154 fewer_names: bool = (false, parse_bool, [TRACKED],
1155 "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR)"),
1156 meta_stats: bool = (false, parse_bool, [UNTRACKED],
1157 "gather metadata statistics"),
1158 print_link_args: bool = (false, parse_bool, [UNTRACKED],
1159 "print the arguments passed to the linker"),
1160 print_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1161 "prints the llvm optimization passes being run"),
1162 ast_json: bool = (false, parse_bool, [UNTRACKED],
1163 "print the AST as JSON and halt"),
1164 query_threads: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1165 "execute queries on a thread pool with N threads"),
1166 ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED],
1167 "print the pre-expansion AST as JSON and halt"),
1168 ls: bool = (false, parse_bool, [UNTRACKED],
1169 "list the symbols defined by a library crate"),
1170 save_analysis: bool = (false, parse_bool, [UNTRACKED],
1171 "write syntax and type analysis (in JSON format) information, in \
1172 addition to normal output"),
1173 flowgraph_print_loans: bool = (false, parse_bool, [UNTRACKED],
1174 "include loan analysis data in -Z unpretty flowgraph output"),
1175 flowgraph_print_moves: bool = (false, parse_bool, [UNTRACKED],
1176 "include move analysis data in -Z unpretty flowgraph output"),
1177 flowgraph_print_assigns: bool = (false, parse_bool, [UNTRACKED],
1178 "include assignment analysis data in -Z unpretty flowgraph output"),
1179 flowgraph_print_all: bool = (false, parse_bool, [UNTRACKED],
1180 "include all dataflow analysis data in -Z unpretty flowgraph output"),
1181 print_region_graph: bool = (false, parse_bool, [UNTRACKED],
1182 "prints region inference graph. \
1183 Use with RUST_REGION_GRAPH=help for more info"),
1184 parse_only: bool = (false, parse_bool, [UNTRACKED],
1185 "parse only; do not compile, assemble, or link"),
1186 no_codegen: bool = (false, parse_bool, [TRACKED],
1187 "run all passes except codegen; no output"),
1188 treat_err_as_bug: bool = (false, parse_bool, [TRACKED],
1189 "treat all errors that occur as bugs"),
1190 external_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1191 "show macro backtraces even for non-local macros"),
1192 teach: bool = (false, parse_bool, [TRACKED],
1193 "show extended diagnostic help"),
1194 continue_parse_after_error: bool = (false, parse_bool, [TRACKED],
1195 "attempt to recover from parse errors (experimental)"),
1196 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1197 "enable incremental compilation (experimental)"),
1198 incremental_queries: bool = (true, parse_bool, [UNTRACKED],
1199 "enable incremental compilation support for queries (experimental)"),
1200 incremental_info: bool = (false, parse_bool, [UNTRACKED],
1201 "print high-level information about incremental reuse (or the lack thereof)"),
1202 incremental_dump_hash: bool = (false, parse_bool, [UNTRACKED],
1203 "dump hash information in textual format to stdout"),
1204 incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
1205 "verify incr. comp. hashes of green query instances"),
1206 incremental_ignore_spans: bool = (false, parse_bool, [UNTRACKED],
1207 "ignore spans during ICH computation -- used for testing"),
1208 dump_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1209 "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv)"),
1210 query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1211 "enable queries of the dependency graph for regression testing"),
1212 profile_queries: bool = (false, parse_bool, [UNTRACKED],
1213 "trace and profile the queries of the incremental compilation framework"),
1214 profile_queries_and_keys: bool = (false, parse_bool, [UNTRACKED],
1215 "trace and profile the queries and keys of the incremental compilation framework"),
1216 no_analysis: bool = (false, parse_bool, [UNTRACKED],
1217 "parse and expand the source, but run no analysis"),
1218 extra_plugins: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1219 "load extra plugins"),
1220 unstable_options: bool = (false, parse_bool, [UNTRACKED],
1221 "adds unstable command line options to rustc interface"),
1222 force_overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1223 "force overflow checks on or off"),
1224 trace_macros: bool = (false, parse_bool, [UNTRACKED],
1225 "for every macro invocation, print its name and arguments"),
1226 debug_macros: bool = (false, parse_bool, [TRACKED],
1227 "emit line numbers debug info inside macros"),
1228 enable_nonzeroing_move_hints: bool = (false, parse_bool, [TRACKED],
1229 "force nonzeroing move optimization on"),
1230 keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED],
1231 "don't clear the hygiene data after analysis"),
1232 keep_ast: bool = (false, parse_bool, [UNTRACKED],
1233 "keep the AST after lowering it to HIR"),
1234 show_span: Option<String> = (None, parse_opt_string, [TRACKED],
1235 "show spans for compiler debugging (expr|pat|ty)"),
1236 print_type_sizes: bool = (false, parse_bool, [UNTRACKED],
1237 "print layout information for each type encountered"),
1238 print_mono_items: Option<String> = (None, parse_opt_string, [UNTRACKED],
1239 "print the result of the monomorphization collection pass"),
1240 mir_opt_level: usize = (1, parse_uint, [TRACKED],
1241 "set the MIR optimization level (0-3, default: 1)"),
1242 mutable_noalias: Option<bool> = (None, parse_opt_bool, [TRACKED],
1243 "emit noalias metadata for mutable references (default: yes on LLVM >= 6)"),
1244 arg_align_attributes: bool = (false, parse_bool, [TRACKED],
1245 "emit align metadata for reference arguments"),
1246 dump_mir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1247 "dump MIR state at various points in transforms"),
1248 dump_mir_dir: String = (String::from("mir_dump"), parse_string, [UNTRACKED],
1249 "the directory the MIR is dumped into"),
1250 dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED],
1251 "in addition to `.mir` files, create graphviz `.dot` files"),
1252 dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED],
1253 "if set, exclude the pass number when dumping MIR (used in tests)"),
1254 mir_emit_validate: usize = (0, parse_uint, [TRACKED],
1255 "emit Validate MIR statements, interpreted e.g. by miri (0: do not emit; 1: if function \
1256 contains unsafe block, only validate arguments; 2: always emit full validation)"),
1257 perf_stats: bool = (false, parse_bool, [UNTRACKED],
1258 "print some performance-related statistics"),
1259 hir_stats: bool = (false, parse_bool, [UNTRACKED],
1260 "print some statistics about AST and HIR"),
1261 mir_stats: bool = (false, parse_bool, [UNTRACKED],
1262 "print some statistics about MIR"),
1263 always_encode_mir: bool = (false, parse_bool, [TRACKED],
1264 "encode MIR of all functions into the crate metadata"),
1265 osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
1266 "pass `-install_name @rpath/...` to the macOS linker"),
1267 sanitizer: Option<Sanitizer> = (None, parse_sanitizer, [TRACKED],
1269 linker_flavor: Option<LinkerFlavor> = (None, parse_linker_flavor, [UNTRACKED],
1271 fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
1272 "set the optimization fuel quota for a crate"),
1273 print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
1274 "make Rustc print the total optimization fuel used by a crate"),
1275 force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
1276 "force all crates to be `rustc_private` unstable"),
1277 pre_link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1278 "a single extra argument to prepend the linker invocation (can be used several times)"),
1279 pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1280 "extra arguments to prepend to the linker invocation (space separated)"),
1281 profile: bool = (false, parse_bool, [TRACKED],
1282 "insert profiling code"),
1283 pgo_gen: Option<String> = (None, parse_opt_string, [TRACKED],
1284 "Generate PGO profile data, to a given file, or to the default \
1285 location if it's empty."),
1286 pgo_use: String = (String::new(), parse_string, [TRACKED],
1287 "Use PGO profile data from the given profile file."),
1288 disable_instrumentation_preinliner: bool =
1289 (false, parse_bool, [TRACKED], "Disable the instrumentation pre-inliner, \
1290 useful for profiling / PGO."),
1291 relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
1292 "choose which RELRO level to use"),
1293 disable_ast_check_for_mutation_in_guard: bool = (false, parse_bool, [UNTRACKED],
1294 "skip AST-based mutation-in-guard check (mir-borrowck provides more precise check)"),
1295 nll_subminimal_causes: bool = (false, parse_bool, [UNTRACKED],
1296 "when tracking region error causes, accept subminimal results for faster execution."),
1297 nll_facts: bool = (false, parse_bool, [UNTRACKED],
1298 "dump facts from NLL analysis into side files"),
1299 disable_nll_user_type_assert: bool = (false, parse_bool, [UNTRACKED],
1300 "disable user provided type assertion in NLL"),
1301 nll_dont_emit_read_for_match: bool = (false, parse_bool, [UNTRACKED],
1302 "in match codegen, do not include ReadForMatch statements (used by mir-borrowck)"),
1303 polonius: bool = (false, parse_bool, [UNTRACKED],
1304 "enable polonius-based borrow-checker"),
1305 codegen_time_graph: bool = (false, parse_bool, [UNTRACKED],
1306 "generate a graphical HTML report of time spent in codegen and LLVM"),
1307 thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
1308 "enable ThinLTO when possible"),
1309 inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
1310 "control whether #[inline] functions are in all cgus"),
1311 tls_model: Option<String> = (None, parse_opt_string, [TRACKED],
1312 "choose the TLS model to use (rustc --print tls-models for details)"),
1313 saturating_float_casts: bool = (false, parse_bool, [TRACKED],
1314 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1315 the max/min integer respectively, and NaN is mapped to 0"),
1316 lower_128bit_ops: Option<bool> = (None, parse_opt_bool, [TRACKED],
1317 "rewrite operators on i128 and u128 into lang item calls (typically provided \
1318 by compiler-builtins) so codegen doesn't need to support them,
1319 overriding the default for the current target"),
1320 human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
1321 "generate human-readable, predictable names for codegen units"),
1322 dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
1323 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
1325 unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
1326 "Present the input source, unstable (and less-pretty) variants;
1327 valid types are any of the types for `--pretty`, as well as:
1328 `flowgraph=<nodeid>` (graphviz formatted flowgraph for node),
1329 `everybody_loops` (all function bodies replaced with `loop {}`),
1330 `hir` (the HIR), `hir,identified`, or
1331 `hir,typed` (HIR with types for each node)."),
1332 run_dsymutil: Option<bool> = (None, parse_opt_bool, [TRACKED],
1333 "run `dsymutil` and delete intermediate object files"),
1334 ui_testing: bool = (false, parse_bool, [UNTRACKED],
1335 "format compiler diagnostics in a way that's better suitable for UI testing"),
1336 embed_bitcode: bool = (false, parse_bool, [TRACKED],
1337 "embed LLVM bitcode in object files"),
1338 strip_debuginfo_if_disabled: Option<bool> = (None, parse_opt_bool, [TRACKED],
1339 "tell the linker to strip debuginfo when building without debuginfo enabled."),
1340 share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
1341 "make the current crate share its generic instantiations"),
1342 chalk: bool = (false, parse_bool, [TRACKED],
1343 "enable the experimental Chalk-based trait solving engine"),
1344 cross_lang_lto: CrossLangLto = (CrossLangLto::Disabled, parse_cross_lang_lto, [TRACKED],
1345 "generate build artifacts that are compatible with linker-based LTO."),
1346 no_parallel_llvm: bool = (false, parse_bool, [UNTRACKED],
1347 "don't run LLVM in parallel (while keeping codegen-units and ThinLTO)"),
1350 pub fn default_lib_output() -> CrateType {
1354 pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
1355 let end = &sess.target.target.target_endian;
1356 let arch = &sess.target.target.arch;
1357 let wordsz = &sess.target.target.target_pointer_width;
1358 let os = &sess.target.target.target_os;
1359 let env = &sess.target.target.target_env;
1360 let vendor = &sess.target.target.target_vendor;
1361 let min_atomic_width = sess.target.target.min_atomic_width();
1362 let max_atomic_width = sess.target.target.max_atomic_width();
1364 let mut ret = HashSet::new();
1366 ret.insert((Symbol::intern("target_os"), Some(Symbol::intern(os))));
1367 if let Some(ref fam) = sess.target.target.options.target_family {
1368 ret.insert((Symbol::intern("target_family"), Some(Symbol::intern(fam))));
1369 if fam == "windows" || fam == "unix" {
1370 ret.insert((Symbol::intern(fam), None));
1373 ret.insert((Symbol::intern("target_arch"), Some(Symbol::intern(arch))));
1374 ret.insert((Symbol::intern("target_endian"), Some(Symbol::intern(end))));
1376 Symbol::intern("target_pointer_width"),
1377 Some(Symbol::intern(wordsz)),
1379 ret.insert((Symbol::intern("target_env"), Some(Symbol::intern(env))));
1381 Symbol::intern("target_vendor"),
1382 Some(Symbol::intern(vendor)),
1384 if sess.target.target.options.has_elf_tls {
1385 ret.insert((Symbol::intern("target_thread_local"), None));
1387 for &i in &[8, 16, 32, 64, 128] {
1388 if i >= min_atomic_width && i <= max_atomic_width {
1389 let s = i.to_string();
1391 Symbol::intern("target_has_atomic"),
1392 Some(Symbol::intern(&s)),
1396 Symbol::intern("target_has_atomic"),
1397 Some(Symbol::intern("ptr")),
1402 if sess.opts.debug_assertions {
1403 ret.insert((Symbol::intern("debug_assertions"), None));
1405 if sess.opts.crate_types.contains(&CrateTypeProcMacro) {
1406 ret.insert((Symbol::intern("proc_macro"), None));
1411 pub fn build_configuration(sess: &Session, mut user_cfg: ast::CrateConfig) -> ast::CrateConfig {
1412 // Combine the configuration requested by the session (command line) with
1413 // some default and generated configuration items
1414 let default_cfg = default_configuration(sess);
1415 // If the user wants a test runner, then add the test cfg
1417 user_cfg.insert((Symbol::intern("test"), None));
1419 user_cfg.extend(default_cfg.iter().cloned());
1423 pub fn build_target_config(opts: &Options, sp: &Handler) -> Config {
1424 let target = match Target::search(&opts.target_triple) {
1427 sp.struct_fatal(&format!("Error loading target specification: {}", e))
1428 .help("Use `--print target-list` for a list of built-in targets")
1434 let (isize_ty, usize_ty) = match &target.target_pointer_width[..] {
1435 "16" => (ast::IntTy::I16, ast::UintTy::U16),
1436 "32" => (ast::IntTy::I32, ast::UintTy::U32),
1437 "64" => (ast::IntTy::I64, ast::UintTy::U64),
1438 w => sp.fatal(&format!(
1439 "target specification was invalid: \
1440 unrecognized target-pointer-width {}",
1452 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
1453 pub enum OptionStability {
1459 pub struct RustcOptGroup {
1460 pub apply: Box<dyn Fn(&mut getopts::Options) -> &mut getopts::Options>,
1461 pub name: &'static str,
1462 pub stability: OptionStability,
1465 impl RustcOptGroup {
1466 pub fn is_stable(&self) -> bool {
1467 self.stability == OptionStability::Stable
1470 pub fn stable<F>(name: &'static str, f: F) -> RustcOptGroup
1472 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1477 stability: OptionStability::Stable,
1481 pub fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup
1483 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1488 stability: OptionStability::Unstable,
1493 // The `opt` local module holds wrappers around the `getopts` API that
1494 // adds extra rustc-specific metadata to each option; such metadata
1495 // is exposed by . The public
1496 // functions below ending with `_u` are the functions that return
1497 // *unstable* options, i.e. options that are only enabled when the
1498 // user also passes the `-Z unstable-options` debugging flag.
1500 // The `fn opt_u` etc below are written so that we can use them
1501 // in the future; do not warn about them not being used right now.
1502 #![allow(dead_code)]
1505 use super::RustcOptGroup;
1507 pub type R = RustcOptGroup;
1508 pub type S = &'static str;
1510 fn stable<F>(name: S, f: F) -> R
1512 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1514 RustcOptGroup::stable(name, f)
1517 fn unstable<F>(name: S, f: F) -> R
1519 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1521 RustcOptGroup::unstable(name, f)
1524 fn longer(a: S, b: S) -> S {
1525 if a.len() > b.len() {
1532 pub fn opt_s(a: S, b: S, c: S, d: S) -> R {
1533 stable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1535 pub fn multi_s(a: S, b: S, c: S, d: S) -> R {
1536 stable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1538 pub fn flag_s(a: S, b: S, c: S) -> R {
1539 stable(longer(a, b), move |opts| opts.optflag(a, b, c))
1541 pub fn flagopt_s(a: S, b: S, c: S, d: S) -> R {
1542 stable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1544 pub fn flagmulti_s(a: S, b: S, c: S) -> R {
1545 stable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1548 pub fn opt(a: S, b: S, c: S, d: S) -> R {
1549 unstable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1551 pub fn multi(a: S, b: S, c: S, d: S) -> R {
1552 unstable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1554 pub fn flag(a: S, b: S, c: S) -> R {
1555 unstable(longer(a, b), move |opts| opts.optflag(a, b, c))
1557 pub fn flagopt(a: S, b: S, c: S, d: S) -> R {
1558 unstable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1560 pub fn flagmulti(a: S, b: S, c: S) -> R {
1561 unstable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1565 /// Returns the "short" subset of the rustc command line options,
1566 /// including metadata for each option, such as whether the option is
1567 /// part of the stable long-term interface for rustc.
1568 pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
1570 opt::flag_s("h", "help", "Display this message"),
1571 opt::multi_s("", "cfg", "Configure the compilation environment", "SPEC"),
1575 "Add a directory to the library search path. The
1576 optional KIND can be one of dependency, crate, native,
1577 framework or all (the default).",
1583 "Link the generated crate(s) to the specified native
1584 library NAME. The optional KIND can be one of
1585 static, dylib, or framework. If omitted, dylib is
1592 "Comma separated list of types of crates
1593 for the compiler to emit",
1594 "[bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]",
1599 "Specify the name of the crate being built",
1605 "Comma separated list of types of output for \
1606 the compiler to emit",
1607 "[asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]",
1612 "Comma separated list of compiler information to \
1614 "[crate-name|file-names|sysroot|cfg|target-list|\
1615 target-cpus|target-features|relocation-models|\
1616 code-models|tls-models|target-spec-json|native-static-libs]",
1618 opt::flagmulti_s("g", "", "Equivalent to -C debuginfo=2"),
1619 opt::flagmulti_s("O", "", "Equivalent to -C opt-level=2"),
1620 opt::opt_s("o", "", "Write output to <filename>", "FILENAME"),
1624 "Write output to compiler-chosen filename \
1631 "Provide a detailed explanation of an error \
1635 opt::flag_s("", "test", "Build a test harness"),
1639 "Target triple for which the code is compiled",
1642 opt::multi_s("W", "warn", "Set lint warnings", "OPT"),
1643 opt::multi_s("A", "allow", "Set lint allowed", "OPT"),
1644 opt::multi_s("D", "deny", "Set lint denied", "OPT"),
1645 opt::multi_s("F", "forbid", "Set lint forbidden", "OPT"),
1649 "Set the most restrictive lint level. \
1650 More restrictive lints are capped at this \
1654 opt::multi_s("C", "codegen", "Set a codegen option", "OPT[=VALUE]"),
1655 opt::flag_s("V", "version", "Print version info and exit"),
1656 opt::flag_s("v", "verbose", "Use verbose output"),
1660 /// Returns all rustc command line options, including metadata for
1661 /// each option, such as whether the option is part of the stable
1662 /// long-term interface for rustc.
1663 pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
1664 let mut opts = rustc_short_optgroups();
1669 "Specify where an external rust library is located",
1672 opt::opt_s("", "sysroot", "Override the system root", "PATH"),
1673 opt::multi("Z", "", "Set internal debugging options", "FLAG"),
1677 "How errors and other messages are produced",
1683 "Configure coloring of output:
1684 auto = colorize, if output goes to a tty (default);
1685 always = always colorize output;
1686 never = never colorize output",
1687 "auto|always|never",
1692 "Pretty-print the input instead of compiling;
1693 valid types are: `normal` (un-annotated source),
1694 `expanded` (crates expanded), or
1695 `expanded,identified` (fully parenthesized, AST nodes with IDs).",
1701 "Specify which edition of the compiler to use when compiling code.",
1706 "remap-path-prefix",
1707 "Remap source names in all output (compiler messages and output files)",
1714 // Convert strings provided as --cfg [cfgspec] into a crate_cfg
1715 pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> ast::CrateConfig {
1719 let sess = parse::ParseSess::new(FilePathMapping::empty());
1721 parse::new_parser_from_source_str(&sess, FileName::CfgSpec, s.to_string());
1723 let meta_item = panictry!(parser.parse_meta_item());
1725 if parser.token != token::Eof {
1727 ErrorOutputType::default(),
1728 &format!("invalid --cfg argument: {}", s),
1730 } else if meta_item.is_meta_item_list() {
1732 "invalid predicate in --cfg command line argument: `{}`",
1735 early_error(ErrorOutputType::default(), &msg)
1738 (meta_item.name(), meta_item.value_str())
1740 .collect::<ast::CrateConfig>()
1743 pub fn build_session_options_and_crate_config(
1744 matches: &getopts::Matches,
1745 ) -> (Options, ast::CrateConfig) {
1746 let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
1747 Some("auto") => ColorConfig::Auto,
1748 Some("always") => ColorConfig::Always,
1749 Some("never") => ColorConfig::Never,
1751 None => ColorConfig::Auto,
1753 Some(arg) => early_error(
1754 ErrorOutputType::default(),
1756 "argument for --color must be auto, \
1757 always or never (instead was `{}`)",
1763 let edition = match matches.opt_str("edition") {
1764 Some(arg) => match Edition::from_str(&arg){
1765 Ok(edition) => edition,
1766 Err(_) => early_error(
1767 ErrorOutputType::default(),
1769 "argument for --edition must be one of: \
1770 {}. (instead was `{}`)",
1776 None => DEFAULT_EDITION,
1779 if !edition.is_stable() && !nightly_options::is_nightly_build() {
1781 ErrorOutputType::default(),
1783 "Edition {} is unstable an only\
1784 available for nightly builds of rustc.",
1791 // We need the opts_present check because the driver will send us Matches
1792 // with only stable options if no unstable options are used. Since error-format
1793 // is unstable, it will not be present. We have to use opts_present not
1794 // opt_present because the latter will panic.
1795 let error_format = if matches.opts_present(&["error-format".to_owned()]) {
1796 match matches.opt_str("error-format").as_ref().map(|s| &s[..]) {
1797 Some("human") => ErrorOutputType::HumanReadable(color),
1798 Some("json") => ErrorOutputType::Json(false),
1799 Some("pretty-json") => ErrorOutputType::Json(true),
1800 Some("short") => ErrorOutputType::Short(color),
1801 None => ErrorOutputType::HumanReadable(color),
1803 Some(arg) => early_error(
1804 ErrorOutputType::HumanReadable(color),
1806 "argument for --error-format must be `human`, `json` or \
1807 `short` (instead was `{}`)",
1813 ErrorOutputType::HumanReadable(color)
1816 let unparsed_crate_types = matches.opt_strs("crate-type");
1817 let crate_types = parse_crate_types_from_list(unparsed_crate_types)
1818 .unwrap_or_else(|e| early_error(error_format, &e[..]));
1820 let mut lint_opts = vec![];
1821 let mut describe_lints = false;
1823 for &level in &[lint::Allow, lint::Warn, lint::Deny, lint::Forbid] {
1824 for lint_name in matches.opt_strs(level.as_str()) {
1825 if lint_name == "help" {
1826 describe_lints = true;
1828 lint_opts.push((lint_name.replace("-", "_"), level));
1833 let lint_cap = matches.opt_str("cap-lints").map(|cap| {
1834 lint::Level::from_str(&cap)
1835 .unwrap_or_else(|| early_error(error_format, &format!("unknown lint level: `{}`", cap)))
1838 let mut debugging_opts = build_debugging_options(matches, error_format);
1840 if !debugging_opts.unstable_options && error_format == ErrorOutputType::Json(true) {
1842 ErrorOutputType::Json(false),
1843 "--error-format=pretty-json is unstable",
1847 if debugging_opts.pgo_gen.is_some() && !debugging_opts.pgo_use.is_empty() {
1850 "options `-Z pgo-gen` and `-Z pgo-use` are exclusive",
1854 let mut output_types = BTreeMap::new();
1855 if !debugging_opts.parse_only {
1856 for list in matches.opt_strs("emit") {
1857 for output_type in list.split(',') {
1858 let mut parts = output_type.splitn(2, '=');
1859 let shorthand = parts.next().unwrap();
1860 let output_type = match OutputType::from_shorthand(shorthand) {
1861 Some(output_type) => output_type,
1862 None => early_error(
1865 "unknown emission type: `{}` - expected one of: {}",
1867 OutputType::shorthands_display(),
1871 let path = parts.next().map(PathBuf::from);
1872 output_types.insert(output_type, path);
1876 if output_types.is_empty() {
1877 output_types.insert(OutputType::Exe, None);
1880 let mut cg = build_codegen_options(matches, error_format);
1881 let mut codegen_units = cg.codegen_units;
1882 let mut disable_thinlto = false;
1884 // Issue #30063: if user requests llvm-related output to one
1885 // particular path, disable codegen-units.
1886 let incompatible: Vec<_> = output_types
1888 .map(|ot_path| ot_path.0)
1889 .filter(|ot| !ot.is_compatible_with_codegen_units_and_single_output_file())
1890 .map(|ot| ot.shorthand())
1892 if !incompatible.is_empty() {
1893 match codegen_units {
1894 Some(n) if n > 1 => {
1895 if matches.opt_present("o") {
1896 for ot in &incompatible {
1900 "--emit={} with -o incompatible with \
1901 -C codegen-units=N for N > 1",
1906 early_warn(error_format, "resetting to default -C codegen-units=1");
1907 codegen_units = Some(1);
1908 disable_thinlto = true;
1912 codegen_units = Some(1);
1913 disable_thinlto = true;
1918 if debugging_opts.query_threads == Some(0) {
1921 "Value for query threads must be a positive nonzero integer",
1925 if debugging_opts.query_threads.unwrap_or(1) > 1 && debugging_opts.fuel.is_some() {
1928 "Optimization fuel is incompatible with multiple query threads",
1932 if codegen_units == Some(0) {
1935 "Value for codegen units must be a positive nonzero integer",
1939 let incremental = match (&debugging_opts.incremental, &cg.incremental) {
1940 (&Some(ref path1), &Some(ref path2)) => {
1945 "conflicting paths for `-Z incremental` and \
1946 `-C incremental` specified: {} versus {}",
1954 (&Some(ref path), &None) => Some(path),
1955 (&None, &Some(ref path)) => Some(path),
1956 (&None, &None) => None,
1957 }.map(|m| PathBuf::from(m));
1959 if cg.lto != Lto::No && incremental.is_some() {
1962 "can't perform LTO when compiling incrementally",
1966 let mut prints = Vec::<PrintRequest>::new();
1967 if cg.target_cpu.as_ref().map_or(false, |s| s == "help") {
1968 prints.push(PrintRequest::TargetCPUs);
1969 cg.target_cpu = None;
1971 if cg.target_feature == "help" {
1972 prints.push(PrintRequest::TargetFeatures);
1973 cg.target_feature = "".to_string();
1975 if cg.relocation_model.as_ref().map_or(false, |s| s == "help") {
1976 prints.push(PrintRequest::RelocationModels);
1977 cg.relocation_model = None;
1979 if cg.code_model.as_ref().map_or(false, |s| s == "help") {
1980 prints.push(PrintRequest::CodeModels);
1981 cg.code_model = None;
1986 .map_or(false, |s| s == "help")
1988 prints.push(PrintRequest::TlsModels);
1989 debugging_opts.tls_model = None;
1994 let sysroot_opt = matches.opt_str("sysroot").map(|m| PathBuf::from(&m));
1995 let target_triple = if let Some(target) = matches.opt_str("target") {
1996 if target.ends_with(".json") {
1997 let path = Path::new(&target);
1998 match TargetTriple::from_path(&path) {
1999 Ok(triple) => triple,
2001 early_error(error_format, &format!("target file {:?} does not exist", path))
2005 TargetTriple::TargetTriple(target)
2008 TargetTriple::from_triple(host_triple())
2011 if matches.opt_present("O") {
2012 if cg.opt_level.is_some() {
2013 early_error(error_format, "-O and -C opt-level both provided");
2017 match cg.opt_level.as_ref().map(String::as_ref) {
2018 None => OptLevel::No,
2019 Some("0") => OptLevel::No,
2020 Some("1") => OptLevel::Less,
2021 Some("2") => OptLevel::Default,
2022 Some("3") => OptLevel::Aggressive,
2023 Some("s") => OptLevel::Size,
2024 Some("z") => OptLevel::SizeMin,
2029 "optimization level needs to be \
2030 between 0-3 (instead was `{}`)",
2038 let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);
2039 let debuginfo = if matches.opt_present("g") {
2040 if cg.debuginfo.is_some() {
2041 early_error(error_format, "-g and -C debuginfo both provided");
2045 match cg.debuginfo {
2046 None | Some(0) => NoDebugInfo,
2047 Some(1) => LimitedDebugInfo,
2048 Some(2) => FullDebugInfo,
2053 "debug info level needs to be between \
2054 0-2 (instead was `{}`)",
2062 let mut search_paths = SearchPaths::new();
2063 for s in &matches.opt_strs("L") {
2064 search_paths.add_path(&s[..], error_format);
2071 // Parse string of the form "[KIND=]lib[:new_name]",
2072 // where KIND is one of "dylib", "framework", "static".
2073 let mut parts = s.splitn(2, '=');
2074 let kind = parts.next().unwrap();
2075 let (name, kind) = match (parts.next(), kind) {
2076 (None, name) => (name, None),
2077 (Some(name), "dylib") => (name, Some(cstore::NativeUnknown)),
2078 (Some(name), "framework") => (name, Some(cstore::NativeFramework)),
2079 (Some(name), "static") => (name, Some(cstore::NativeStatic)),
2080 (Some(name), "static-nobundle") => (name, Some(cstore::NativeStaticNobundle)),
2085 "unknown library kind `{}`, expected \
2086 one of dylib, framework, or static",
2092 if kind == Some(cstore::NativeStaticNobundle) && !nightly_options::is_nightly_build() {
2096 "the library kind 'static-nobundle' is only \
2097 accepted on the nightly compiler"
2101 let mut name_parts = name.splitn(2, ':');
2102 let name = name_parts.next().unwrap();
2103 let new_name = name_parts.next();
2104 (name.to_string(), new_name.map(|n| n.to_string()), kind)
2108 let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
2109 let test = matches.opt_present("test");
2111 prints.extend(matches.opt_strs("print").into_iter().map(|s| match &*s {
2112 "crate-name" => PrintRequest::CrateName,
2113 "file-names" => PrintRequest::FileNames,
2114 "sysroot" => PrintRequest::Sysroot,
2115 "cfg" => PrintRequest::Cfg,
2116 "target-list" => PrintRequest::TargetList,
2117 "target-cpus" => PrintRequest::TargetCPUs,
2118 "target-features" => PrintRequest::TargetFeatures,
2119 "relocation-models" => PrintRequest::RelocationModels,
2120 "code-models" => PrintRequest::CodeModels,
2121 "tls-models" => PrintRequest::TlsModels,
2122 "native-static-libs" => PrintRequest::NativeStaticLibs,
2123 "target-spec-json" => {
2124 if nightly_options::is_unstable_enabled(matches) {
2125 PrintRequest::TargetSpec
2130 "the `-Z unstable-options` flag must also be passed to \
2131 enable the target-spec-json print option"
2136 req => early_error(error_format, &format!("unknown print request `{}`", req)),
2139 let borrowck_mode = match debugging_opts.borrowck.as_ref().map(|s| &s[..]) {
2140 None | Some("ast") => BorrowckMode::Ast,
2141 Some("mir") => BorrowckMode::Mir,
2142 Some("compare") => BorrowckMode::Compare,
2143 Some(m) => early_error(error_format, &format!("unknown borrowck mode `{}`", m)),
2146 if !cg.remark.is_empty() && debuginfo == NoDebugInfo {
2149 "-C remark will not show source locations without \
2154 let mut externs = BTreeMap::new();
2155 for arg in &matches.opt_strs("extern") {
2156 let mut parts = arg.splitn(2, '=');
2157 let name = match parts.next() {
2159 None => early_error(error_format, "--extern value must not be empty"),
2161 let location = match parts.next() {
2163 None => early_error(
2165 "--extern value must be of the format `foo=bar`",
2170 .entry(name.to_string())
2171 .or_insert_with(BTreeSet::new)
2172 .insert(location.to_string());
2175 let crate_name = matches.opt_str("crate-name");
2177 let remap_path_prefix = matches
2178 .opt_strs("remap-path-prefix")
2181 let mut parts = remap.rsplitn(2, '='); // reverse iterator
2182 let to = parts.next();
2183 let from = parts.next();
2185 (Some(from), Some(to)) => (PathBuf::from(from), PathBuf::from(to)),
2188 "--remap-path-prefix must contain '=' between FROM and TO",
2197 optimize: opt_level,
2202 output_types: OutputTypes(output_types),
2204 maybe_sysroot: sysroot_opt,
2213 externs: Externs(externs),
2217 unstable_features: UnstableFeatures::from_environment(),
2219 actually_rustdoc: false,
2220 cli_forced_codegen_units: codegen_units,
2221 cli_forced_thinlto_off: disable_thinlto,
2229 pub fn parse_crate_types_from_list(list_list: Vec<String>) -> Result<Vec<CrateType>, String> {
2230 let mut crate_types: Vec<CrateType> = Vec::new();
2231 for unparsed_crate_type in &list_list {
2232 for part in unparsed_crate_type.split(',') {
2233 let new_part = match part {
2234 "lib" => default_lib_output(),
2235 "rlib" => CrateTypeRlib,
2236 "staticlib" => CrateTypeStaticlib,
2237 "dylib" => CrateTypeDylib,
2238 "cdylib" => CrateTypeCdylib,
2239 "bin" => CrateTypeExecutable,
2240 "proc-macro" => CrateTypeProcMacro,
2242 return Err(format!("unknown crate type: `{}`", part));
2245 if !crate_types.contains(&new_part) {
2246 crate_types.push(new_part)
2254 pub mod nightly_options {
2256 use syntax::feature_gate::UnstableFeatures;
2257 use super::{ErrorOutputType, OptionStability, RustcOptGroup};
2258 use session::early_error;
2260 pub fn is_unstable_enabled(matches: &getopts::Matches) -> bool {
2265 .any(|x| *x == "unstable-options")
2268 pub fn is_nightly_build() -> bool {
2269 UnstableFeatures::from_environment().is_nightly_build()
2272 pub fn check_nightly_options(matches: &getopts::Matches, flags: &[RustcOptGroup]) {
2273 let has_z_unstable_option = matches
2276 .any(|x| *x == "unstable-options");
2277 let really_allows_unstable_options =
2278 UnstableFeatures::from_environment().is_nightly_build();
2280 for opt in flags.iter() {
2281 if opt.stability == OptionStability::Stable {
2284 if !matches.opt_present(opt.name) {
2287 if opt.name != "Z" && !has_z_unstable_option {
2289 ErrorOutputType::default(),
2291 "the `-Z unstable-options` flag must also be passed to enable \
2297 if really_allows_unstable_options {
2300 match opt.stability {
2301 OptionStability::Unstable => {
2303 "the option `{}` is only accepted on the \
2307 early_error(ErrorOutputType::default(), &msg);
2309 OptionStability::Stable => {}
2315 impl fmt::Display for CrateType {
2316 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
2318 CrateTypeExecutable => "bin".fmt(f),
2319 CrateTypeDylib => "dylib".fmt(f),
2320 CrateTypeRlib => "rlib".fmt(f),
2321 CrateTypeStaticlib => "staticlib".fmt(f),
2322 CrateTypeCdylib => "cdylib".fmt(f),
2323 CrateTypeProcMacro => "proc-macro".fmt(f),
2328 /// Commandline arguments passed to the compiler have to be incorporated with
2329 /// the dependency tracking system for incremental compilation. This module
2330 /// provides some utilities to make this more convenient.
2332 /// The values of all commandline arguments that are relevant for dependency
2333 /// tracking are hashed into a single value that determines whether the
2334 /// incremental compilation cache can be re-used or not. This hashing is done
2335 /// via the DepTrackingHash trait defined below, since the standard Hash
2336 /// implementation might not be suitable (e.g. arguments are stored in a Vec,
2337 /// the hash of which is order dependent, but we might not want the order of
2338 /// arguments to make a difference for the hash).
2340 /// However, since the value provided by Hash::hash often *is* suitable,
2341 /// especially for primitive types, there is the
2342 /// impl_dep_tracking_hash_via_hash!() macro that allows to simply reuse the
2343 /// Hash implementation for DepTrackingHash. It's important though that
2344 /// we have an opt-in scheme here, so one is hopefully forced to think about
2345 /// how the hash should be calculated when adding a new commandline argument.
2349 use std::collections::BTreeMap;
2350 use std::hash::Hash;
2351 use std::path::PathBuf;
2352 use std::collections::hash_map::DefaultHasher;
2353 use super::{CrateType, DebugInfoLevel, ErrorOutputType, Lto, OptLevel, OutputTypes,
2354 Passes, Sanitizer, CrossLangLto};
2355 use syntax::feature_gate::UnstableFeatures;
2356 use rustc_target::spec::{PanicStrategy, RelroLevel, TargetTriple};
2357 use syntax::edition::Edition;
2359 pub trait DepTrackingHash {
2360 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType);
2363 macro_rules! impl_dep_tracking_hash_via_hash {
2365 impl DepTrackingHash for $t {
2366 fn hash(&self, hasher: &mut DefaultHasher, _: ErrorOutputType) {
2367 Hash::hash(self, hasher);
2373 macro_rules! impl_dep_tracking_hash_for_sortable_vec_of {
2375 impl DepTrackingHash for Vec<$t> {
2376 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2377 let mut elems: Vec<&$t> = self.iter().collect();
2379 Hash::hash(&elems.len(), hasher);
2380 for (index, elem) in elems.iter().enumerate() {
2381 Hash::hash(&index, hasher);
2382 DepTrackingHash::hash(*elem, hasher, error_format);
2389 impl_dep_tracking_hash_via_hash!(bool);
2390 impl_dep_tracking_hash_via_hash!(usize);
2391 impl_dep_tracking_hash_via_hash!(u64);
2392 impl_dep_tracking_hash_via_hash!(String);
2393 impl_dep_tracking_hash_via_hash!(PathBuf);
2394 impl_dep_tracking_hash_via_hash!(lint::Level);
2395 impl_dep_tracking_hash_via_hash!(Option<bool>);
2396 impl_dep_tracking_hash_via_hash!(Option<usize>);
2397 impl_dep_tracking_hash_via_hash!(Option<String>);
2398 impl_dep_tracking_hash_via_hash!(Option<(String, u64)>);
2399 impl_dep_tracking_hash_via_hash!(Option<PanicStrategy>);
2400 impl_dep_tracking_hash_via_hash!(Option<RelroLevel>);
2401 impl_dep_tracking_hash_via_hash!(Option<lint::Level>);
2402 impl_dep_tracking_hash_via_hash!(Option<PathBuf>);
2403 impl_dep_tracking_hash_via_hash!(Option<cstore::NativeLibraryKind>);
2404 impl_dep_tracking_hash_via_hash!(CrateType);
2405 impl_dep_tracking_hash_via_hash!(PanicStrategy);
2406 impl_dep_tracking_hash_via_hash!(RelroLevel);
2407 impl_dep_tracking_hash_via_hash!(Passes);
2408 impl_dep_tracking_hash_via_hash!(OptLevel);
2409 impl_dep_tracking_hash_via_hash!(Lto);
2410 impl_dep_tracking_hash_via_hash!(DebugInfoLevel);
2411 impl_dep_tracking_hash_via_hash!(UnstableFeatures);
2412 impl_dep_tracking_hash_via_hash!(OutputTypes);
2413 impl_dep_tracking_hash_via_hash!(cstore::NativeLibraryKind);
2414 impl_dep_tracking_hash_via_hash!(Sanitizer);
2415 impl_dep_tracking_hash_via_hash!(Option<Sanitizer>);
2416 impl_dep_tracking_hash_via_hash!(TargetTriple);
2417 impl_dep_tracking_hash_via_hash!(Edition);
2418 impl_dep_tracking_hash_via_hash!(CrossLangLto);
2420 impl_dep_tracking_hash_for_sortable_vec_of!(String);
2421 impl_dep_tracking_hash_for_sortable_vec_of!(PathBuf);
2422 impl_dep_tracking_hash_for_sortable_vec_of!(CrateType);
2423 impl_dep_tracking_hash_for_sortable_vec_of!((String, lint::Level));
2424 impl_dep_tracking_hash_for_sortable_vec_of!((
2427 Option<cstore::NativeLibraryKind>
2429 impl_dep_tracking_hash_for_sortable_vec_of!((String, u64));
2431 impl<T1, T2> DepTrackingHash for (T1, T2)
2433 T1: DepTrackingHash,
2434 T2: DepTrackingHash,
2436 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2437 Hash::hash(&0, hasher);
2438 DepTrackingHash::hash(&self.0, hasher, error_format);
2439 Hash::hash(&1, hasher);
2440 DepTrackingHash::hash(&self.1, hasher, error_format);
2444 impl<T1, T2, T3> DepTrackingHash for (T1, T2, T3)
2446 T1: DepTrackingHash,
2447 T2: DepTrackingHash,
2448 T3: DepTrackingHash,
2450 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2451 Hash::hash(&0, hasher);
2452 DepTrackingHash::hash(&self.0, hasher, error_format);
2453 Hash::hash(&1, hasher);
2454 DepTrackingHash::hash(&self.1, hasher, error_format);
2455 Hash::hash(&2, hasher);
2456 DepTrackingHash::hash(&self.2, hasher, error_format);
2460 // This is a stable hash because BTreeMap is a sorted container
2462 sub_hashes: BTreeMap<&'static str, &dyn DepTrackingHash>,
2463 hasher: &mut DefaultHasher,
2464 error_format: ErrorOutputType,
2466 for (key, sub_hash) in sub_hashes {
2467 // Using Hash::hash() instead of DepTrackingHash::hash() is fine for
2468 // the keys, as they are just plain strings
2469 Hash::hash(&key.len(), hasher);
2470 Hash::hash(key, hasher);
2471 sub_hash.hash(hasher, error_format);
2482 use session::config::{build_configuration, build_session_options_and_crate_config};
2483 use session::config::{Lto, CrossLangLto};
2484 use session::build_session;
2485 use std::collections::{BTreeMap, BTreeSet};
2486 use std::iter::FromIterator;
2487 use std::path::PathBuf;
2488 use super::{Externs, OutputType, OutputTypes};
2489 use rustc_target::spec::{PanicStrategy, RelroLevel};
2490 use syntax::symbol::Symbol;
2491 use syntax::edition::{Edition, DEFAULT_EDITION};
2494 fn optgroups() -> getopts::Options {
2495 let mut opts = getopts::Options::new();
2496 for group in super::rustc_optgroups() {
2497 (group.apply)(&mut opts);
2502 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
2503 BTreeMap::from_iter(entries.into_iter())
2506 fn mk_set<V: Ord>(entries: Vec<V>) -> BTreeSet<V> {
2507 BTreeSet::from_iter(entries.into_iter())
2510 // When the user supplies --test we should implicitly supply --cfg test
2512 fn test_switch_implies_cfg_test() {
2513 syntax::with_globals(|| {
2514 let matches = &match optgroups().parse(&["--test".to_string()]) {
2516 Err(f) => panic!("test_switch_implies_cfg_test: {}", f),
2518 let registry = errors::registry::Registry::new(&[]);
2519 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2520 let sess = build_session(sessopts, None, registry);
2521 let cfg = build_configuration(&sess, cfg);
2522 assert!(cfg.contains(&(Symbol::intern("test"), None)));
2526 // When the user supplies --test and --cfg test, don't implicitly add
2527 // another --cfg test
2529 fn test_switch_implies_cfg_test_unless_cfg_test() {
2530 syntax::with_globals(|| {
2531 let matches = &match optgroups().parse(&["--test".to_string(),
2532 "--cfg=test".to_string()]) {
2534 Err(f) => panic!("test_switch_implies_cfg_test_unless_cfg_test: {}", f),
2536 let registry = errors::registry::Registry::new(&[]);
2537 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2538 let sess = build_session(sessopts, None, registry);
2539 let cfg = build_configuration(&sess, cfg);
2540 let mut test_items = cfg.iter().filter(|&&(name, _)| name == "test");
2541 assert!(test_items.next().is_some());
2542 assert!(test_items.next().is_none());
2547 fn test_can_print_warnings() {
2548 syntax::with_globals(|| {
2549 let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
2550 let registry = errors::registry::Registry::new(&[]);
2551 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2552 let sess = build_session(sessopts, None, registry);
2553 assert!(!sess.diagnostic().flags.can_emit_warnings);
2556 syntax::with_globals(|| {
2557 let matches = optgroups()
2558 .parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()])
2560 let registry = errors::registry::Registry::new(&[]);
2561 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2562 let sess = build_session(sessopts, None, registry);
2563 assert!(sess.diagnostic().flags.can_emit_warnings);
2566 syntax::with_globals(|| {
2567 let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
2568 let registry = errors::registry::Registry::new(&[]);
2569 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2570 let sess = build_session(sessopts, None, registry);
2571 assert!(sess.diagnostic().flags.can_emit_warnings);
2576 fn test_output_types_tracking_hash_different_paths() {
2577 let mut v1 = super::basic_options();
2578 let mut v2 = super::basic_options();
2579 let mut v3 = super::basic_options();
2582 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("./some/thing")))]);
2584 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("/some/thing")))]);
2585 v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
2587 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2588 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2589 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2592 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2593 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2594 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2598 fn test_output_types_tracking_hash_different_construction_order() {
2599 let mut v1 = super::basic_options();
2600 let mut v2 = super::basic_options();
2602 v1.output_types = OutputTypes::new(&[
2603 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2604 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2607 v2.output_types = OutputTypes::new(&[
2608 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2609 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2612 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2615 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2619 fn test_externs_tracking_hash_different_construction_order() {
2620 let mut v1 = super::basic_options();
2621 let mut v2 = super::basic_options();
2622 let mut v3 = super::basic_options();
2624 v1.externs = Externs::new(mk_map(vec![
2627 mk_set(vec![String::from("b"), String::from("c")]),
2631 mk_set(vec![String::from("e"), String::from("f")]),
2635 v2.externs = Externs::new(mk_map(vec![
2638 mk_set(vec![String::from("e"), String::from("f")]),
2642 mk_set(vec![String::from("b"), String::from("c")]),
2646 v3.externs = Externs::new(mk_map(vec![
2649 mk_set(vec![String::from("b"), String::from("c")]),
2653 mk_set(vec![String::from("f"), String::from("e")]),
2657 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2658 assert_eq!(v1.dep_tracking_hash(), v3.dep_tracking_hash());
2659 assert_eq!(v2.dep_tracking_hash(), v3.dep_tracking_hash());
2662 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2663 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2664 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2668 fn test_lints_tracking_hash_different_values() {
2669 let mut v1 = super::basic_options();
2670 let mut v2 = super::basic_options();
2671 let mut v3 = super::basic_options();
2673 v1.lint_opts = vec![
2674 (String::from("a"), lint::Allow),
2675 (String::from("b"), lint::Warn),
2676 (String::from("c"), lint::Deny),
2677 (String::from("d"), lint::Forbid),
2680 v2.lint_opts = vec![
2681 (String::from("a"), lint::Allow),
2682 (String::from("b"), lint::Warn),
2683 (String::from("X"), lint::Deny),
2684 (String::from("d"), lint::Forbid),
2687 v3.lint_opts = vec![
2688 (String::from("a"), lint::Allow),
2689 (String::from("b"), lint::Warn),
2690 (String::from("c"), lint::Forbid),
2691 (String::from("d"), lint::Deny),
2694 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2695 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2696 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2699 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2700 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2701 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2705 fn test_lints_tracking_hash_different_construction_order() {
2706 let mut v1 = super::basic_options();
2707 let mut v2 = super::basic_options();
2709 v1.lint_opts = vec![
2710 (String::from("a"), lint::Allow),
2711 (String::from("b"), lint::Warn),
2712 (String::from("c"), lint::Deny),
2713 (String::from("d"), lint::Forbid),
2716 v2.lint_opts = vec![
2717 (String::from("a"), lint::Allow),
2718 (String::from("c"), lint::Deny),
2719 (String::from("b"), lint::Warn),
2720 (String::from("d"), lint::Forbid),
2723 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2726 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2727 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2731 fn test_search_paths_tracking_hash_different_order() {
2732 let mut v1 = super::basic_options();
2733 let mut v2 = super::basic_options();
2734 let mut v3 = super::basic_options();
2735 let mut v4 = super::basic_options();
2739 .add_path("native=abc", super::ErrorOutputType::Json(false));
2741 .add_path("crate=def", super::ErrorOutputType::Json(false));
2743 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2745 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2747 .add_path("all=mno", super::ErrorOutputType::Json(false));
2750 .add_path("native=abc", super::ErrorOutputType::Json(false));
2752 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2754 .add_path("crate=def", super::ErrorOutputType::Json(false));
2756 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2758 .add_path("all=mno", super::ErrorOutputType::Json(false));
2761 .add_path("crate=def", super::ErrorOutputType::Json(false));
2763 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2765 .add_path("native=abc", super::ErrorOutputType::Json(false));
2767 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2769 .add_path("all=mno", super::ErrorOutputType::Json(false));
2772 .add_path("all=mno", super::ErrorOutputType::Json(false));
2774 .add_path("native=abc", super::ErrorOutputType::Json(false));
2776 .add_path("crate=def", super::ErrorOutputType::Json(false));
2778 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2780 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2782 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2783 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2784 assert!(v1.dep_tracking_hash() == v4.dep_tracking_hash());
2787 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2788 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2789 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2790 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2794 fn test_native_libs_tracking_hash_different_values() {
2795 let mut v1 = super::basic_options();
2796 let mut v2 = super::basic_options();
2797 let mut v3 = super::basic_options();
2798 let mut v4 = super::basic_options();
2802 (String::from("a"), None, Some(cstore::NativeStatic)),
2803 (String::from("b"), None, Some(cstore::NativeFramework)),
2804 (String::from("c"), None, Some(cstore::NativeUnknown)),
2809 (String::from("a"), None, Some(cstore::NativeStatic)),
2810 (String::from("X"), None, Some(cstore::NativeFramework)),
2811 (String::from("c"), None, Some(cstore::NativeUnknown)),
2816 (String::from("a"), None, Some(cstore::NativeStatic)),
2817 (String::from("b"), None, Some(cstore::NativeStatic)),
2818 (String::from("c"), None, Some(cstore::NativeUnknown)),
2823 (String::from("a"), None, Some(cstore::NativeStatic)),
2826 Some(String::from("X")),
2827 Some(cstore::NativeFramework),
2829 (String::from("c"), None, Some(cstore::NativeUnknown)),
2832 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2833 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2834 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
2837 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2838 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2839 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2840 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2844 fn test_native_libs_tracking_hash_different_order() {
2845 let mut v1 = super::basic_options();
2846 let mut v2 = super::basic_options();
2847 let mut v3 = super::basic_options();
2851 (String::from("a"), None, Some(cstore::NativeStatic)),
2852 (String::from("b"), None, Some(cstore::NativeFramework)),
2853 (String::from("c"), None, Some(cstore::NativeUnknown)),
2857 (String::from("b"), None, Some(cstore::NativeFramework)),
2858 (String::from("a"), None, Some(cstore::NativeStatic)),
2859 (String::from("c"), None, Some(cstore::NativeUnknown)),
2863 (String::from("c"), None, Some(cstore::NativeUnknown)),
2864 (String::from("a"), None, Some(cstore::NativeStatic)),
2865 (String::from("b"), None, Some(cstore::NativeFramework)),
2868 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2869 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2870 assert!(v2.dep_tracking_hash() == v3.dep_tracking_hash());
2873 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2874 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2875 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2879 fn test_codegen_options_tracking_hash() {
2880 let reference = super::basic_options();
2881 let mut opts = super::basic_options();
2883 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
2884 opts.cg.ar = Some(String::from("abc"));
2885 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2887 opts.cg.linker = Some(PathBuf::from("linker"));
2888 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2890 opts.cg.link_args = Some(vec![String::from("abc"), String::from("def")]);
2891 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2893 opts.cg.link_dead_code = true;
2894 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2896 opts.cg.rpath = true;
2897 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2899 opts.cg.extra_filename = String::from("extra-filename");
2900 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2902 opts.cg.codegen_units = Some(42);
2903 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2905 opts.cg.remark = super::SomePasses(vec![String::from("pass1"), String::from("pass2")]);
2906 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2908 opts.cg.save_temps = true;
2909 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2911 opts.cg.incremental = Some(String::from("abc"));
2912 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2914 // Make sure changing a [TRACKED] option changes the hash
2915 opts = reference.clone();
2916 opts.cg.lto = Lto::Fat;
2917 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2919 opts = reference.clone();
2920 opts.cg.target_cpu = Some(String::from("abc"));
2921 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2923 opts = reference.clone();
2924 opts.cg.target_feature = String::from("all the features, all of them");
2925 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2927 opts = reference.clone();
2928 opts.cg.passes = vec![String::from("1"), String::from("2")];
2929 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2931 opts = reference.clone();
2932 opts.cg.llvm_args = vec![String::from("1"), String::from("2")];
2933 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2935 opts = reference.clone();
2936 opts.cg.overflow_checks = Some(true);
2937 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2939 opts = reference.clone();
2940 opts.cg.no_prepopulate_passes = true;
2941 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2943 opts = reference.clone();
2944 opts.cg.no_vectorize_loops = true;
2945 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2947 opts = reference.clone();
2948 opts.cg.no_vectorize_slp = true;
2949 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2951 opts = reference.clone();
2952 opts.cg.soft_float = true;
2953 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2955 opts = reference.clone();
2956 opts.cg.prefer_dynamic = true;
2957 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2959 opts = reference.clone();
2960 opts.cg.no_integrated_as = true;
2961 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2963 opts = reference.clone();
2964 opts.cg.no_redzone = Some(true);
2965 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2967 opts = reference.clone();
2968 opts.cg.relocation_model = Some(String::from("relocation model"));
2969 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2971 opts = reference.clone();
2972 opts.cg.code_model = Some(String::from("code model"));
2973 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2975 opts = reference.clone();
2976 opts.debugging_opts.tls_model = Some(String::from("tls model"));
2977 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2979 opts = reference.clone();
2980 opts.debugging_opts.pgo_gen = Some(String::from("abc"));
2981 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2983 opts = reference.clone();
2984 opts.debugging_opts.pgo_use = String::from("abc");
2985 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2987 opts = reference.clone();
2988 opts.cg.metadata = vec![String::from("A"), String::from("B")];
2989 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2991 opts = reference.clone();
2992 opts.cg.debuginfo = Some(0xdeadbeef);
2993 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2995 opts = reference.clone();
2996 opts.cg.debuginfo = Some(0xba5eba11);
2997 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2999 opts = reference.clone();
3000 opts.cg.force_frame_pointers = Some(false);
3001 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3003 opts = reference.clone();
3004 opts.cg.debug_assertions = Some(true);
3005 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3007 opts = reference.clone();
3008 opts.cg.inline_threshold = Some(0xf007ba11);
3009 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3011 opts = reference.clone();
3012 opts.cg.panic = Some(PanicStrategy::Abort);
3013 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3017 fn test_debugging_options_tracking_hash() {
3018 let reference = super::basic_options();
3019 let mut opts = super::basic_options();
3021 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
3022 opts.debugging_opts.verbose = true;
3023 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3024 opts.debugging_opts.time_passes = true;
3025 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3026 opts.debugging_opts.count_llvm_insns = true;
3027 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3028 opts.debugging_opts.time_llvm_passes = true;
3029 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3030 opts.debugging_opts.input_stats = true;
3031 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3032 opts.debugging_opts.codegen_stats = true;
3033 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3034 opts.debugging_opts.borrowck_stats = true;
3035 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3036 opts.debugging_opts.meta_stats = true;
3037 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3038 opts.debugging_opts.print_link_args = true;
3039 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3040 opts.debugging_opts.print_llvm_passes = true;
3041 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3042 opts.debugging_opts.ast_json = true;
3043 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3044 opts.debugging_opts.ast_json_noexpand = true;
3045 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3046 opts.debugging_opts.ls = true;
3047 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3048 opts.debugging_opts.save_analysis = true;
3049 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3050 opts.debugging_opts.flowgraph_print_loans = true;
3051 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3052 opts.debugging_opts.flowgraph_print_moves = true;
3053 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3054 opts.debugging_opts.flowgraph_print_assigns = true;
3055 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3056 opts.debugging_opts.flowgraph_print_all = true;
3057 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3058 opts.debugging_opts.print_region_graph = true;
3059 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3060 opts.debugging_opts.parse_only = true;
3061 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3062 opts.debugging_opts.incremental = Some(String::from("abc"));
3063 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3064 opts.debugging_opts.dump_dep_graph = true;
3065 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3066 opts.debugging_opts.query_dep_graph = true;
3067 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3068 opts.debugging_opts.no_analysis = true;
3069 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3070 opts.debugging_opts.unstable_options = true;
3071 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3072 opts.debugging_opts.trace_macros = true;
3073 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3074 opts.debugging_opts.keep_hygiene_data = true;
3075 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3076 opts.debugging_opts.keep_ast = true;
3077 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3078 opts.debugging_opts.print_mono_items = Some(String::from("abc"));
3079 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3080 opts.debugging_opts.dump_mir = Some(String::from("abc"));
3081 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3082 opts.debugging_opts.dump_mir_dir = String::from("abc");
3083 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3084 opts.debugging_opts.dump_mir_graphviz = true;
3085 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3087 // Make sure changing a [TRACKED] option changes the hash
3088 opts = reference.clone();
3089 opts.debugging_opts.asm_comments = true;
3090 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3092 opts = reference.clone();
3093 opts.debugging_opts.no_verify = true;
3094 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3096 opts = reference.clone();
3097 opts.debugging_opts.no_landing_pads = true;
3098 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3100 opts = reference.clone();
3101 opts.debugging_opts.fewer_names = true;
3102 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3104 opts = reference.clone();
3105 opts.debugging_opts.no_codegen = true;
3106 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3108 opts = reference.clone();
3109 opts.debugging_opts.treat_err_as_bug = true;
3110 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3112 opts = reference.clone();
3113 opts.debugging_opts.continue_parse_after_error = true;
3114 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3116 opts = reference.clone();
3117 opts.debugging_opts.extra_plugins = vec![String::from("plugin1"), String::from("plugin2")];
3118 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3120 opts = reference.clone();
3121 opts.debugging_opts.force_overflow_checks = Some(true);
3122 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3124 opts = reference.clone();
3125 opts.debugging_opts.enable_nonzeroing_move_hints = true;
3126 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3128 opts = reference.clone();
3129 opts.debugging_opts.show_span = Some(String::from("abc"));
3130 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3132 opts = reference.clone();
3133 opts.debugging_opts.mir_opt_level = 3;
3134 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3136 opts = reference.clone();
3137 opts.debugging_opts.relro_level = Some(RelroLevel::Full);
3138 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3140 opts = reference.clone();
3141 opts.debugging_opts.cross_lang_lto = CrossLangLto::NoLink;
3142 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3146 fn test_edition_parsing() {
3147 // test default edition
3148 let options = super::basic_options();
3149 assert!(options.edition == DEFAULT_EDITION);
3151 let matches = optgroups()
3152 .parse(&["--edition=2018".to_string()])
3154 let (sessopts, _) = build_session_options_and_crate_config(&matches);
3155 assert!(sessopts.edition == Edition::Edition2018)