3 use crate::early_error;
5 use crate::search_paths::SearchPath;
6 use crate::utils::NativeLib;
7 use rustc_target::spec::{CodeModel, LinkerFlavor, MergeFunctions, PanicStrategy, SanitizerSet};
8 use rustc_target::spec::{
9 RelocModel, RelroLevel, SplitDebuginfo, StackProtector, TargetTriple, TlsModel,
12 use rustc_feature::UnstableFeatures;
13 use rustc_span::edition::Edition;
14 use rustc_span::RealFileName;
15 use rustc_span::SourceFileHashAlgorithm;
17 use std::collections::BTreeMap;
19 use std::collections::hash_map::DefaultHasher;
20 use std::hash::Hasher;
21 use std::num::NonZeroUsize;
22 use std::path::PathBuf;
26 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr) => {
28 .insert(stringify!($opt_name), $opt_expr as &dyn dep_tracking::DepTrackingHash)
31 panic!("duplicate key in CLI DepTrackingHash: {}", stringify!($opt_name))
36 macro_rules! hash_opt {
37 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, $_for_crate_hash: ident, [UNTRACKED]) => {{}};
38 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, $_for_crate_hash: ident, [TRACKED]) => {{ insert!($opt_name, $opt_expr, $sub_hashes) }};
39 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, $for_crate_hash: ident, [TRACKED_NO_CRATE_HASH]) => {{
41 insert!($opt_name, $opt_expr, $sub_hashes)
44 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, $_for_crate_hash: ident, [SUBSTRUCT]) => {{}};
47 macro_rules! hash_substruct {
48 ($opt_name:ident, $opt_expr:expr, $error_format:expr, $for_crate_hash:expr, $hasher:expr, [UNTRACKED]) => {{}};
49 ($opt_name:ident, $opt_expr:expr, $error_format:expr, $for_crate_hash:expr, $hasher:expr, [TRACKED]) => {{}};
50 ($opt_name:ident, $opt_expr:expr, $error_format:expr, $for_crate_hash:expr, $hasher:expr, [TRACKED_NO_CRATE_HASH]) => {{}};
51 ($opt_name:ident, $opt_expr:expr, $error_format:expr, $for_crate_hash:expr, $hasher:expr, [SUBSTRUCT]) => {
52 use crate::config::dep_tracking::DepTrackingHash;
53 $opt_expr.dep_tracking_hash($for_crate_hash, $error_format).hash(
61 macro_rules! top_level_options {
62 ( $( #[$top_level_attr:meta] )* pub struct Options { $(
64 $opt:ident : $t:ty [$dep_tracking_marker:ident],
67 $( #[$top_level_attr] )*
76 pub fn dep_tracking_hash(&self, for_crate_hash: bool) -> u64 {
77 let mut sub_hashes = BTreeMap::new();
83 [$dep_tracking_marker]);
85 let mut hasher = DefaultHasher::new();
86 dep_tracking::stable_hash(sub_hashes,
96 [$dep_tracking_marker]);
105 /// The top-level command-line options struct.
107 /// For each option, one has to specify how it behaves with regard to the
108 /// dependency tracking system of incremental compilation. This is done via the
109 /// square-bracketed directive after the field type. The options are:
112 /// A change in the given field will cause the compiler to completely clear the
113 /// incremental compilation cache before proceeding.
115 /// - `[TRACKED_NO_CRATE_HASH]`
116 /// Same as `[TRACKED]`, but will not affect the crate hash. This is useful for options that only
117 /// affect the incremental cache.
120 /// Incremental compilation is not influenced by this option.
123 /// Second-level sub-structs containing more options.
125 /// If you add a new option to this struct or one of the sub-structs like
126 /// `CodegenOptions`, think about how it influences incremental compilation. If in
127 /// doubt, specify `[TRACKED]`, which is always "correct" but might lead to
128 /// unnecessary re-compilation.
130 /// The crate config requested for the session, which may be combined
131 /// with additional crate configurations during the compile process.
132 crate_types: Vec<CrateType> [TRACKED],
133 optimize: OptLevel [TRACKED],
134 /// Include the `debug_assertions` flag in dependency tracking, since it
135 /// can influence whether overflow checks are done or not.
136 debug_assertions: bool [TRACKED],
137 debuginfo: DebugInfo [TRACKED],
138 lint_opts: Vec<(String, lint::Level)> [TRACKED_NO_CRATE_HASH],
139 lint_cap: Option<lint::Level> [TRACKED_NO_CRATE_HASH],
140 describe_lints: bool [UNTRACKED],
141 output_types: OutputTypes [TRACKED],
142 search_paths: Vec<SearchPath> [UNTRACKED],
143 libs: Vec<NativeLib> [TRACKED],
144 maybe_sysroot: Option<PathBuf> [UNTRACKED],
146 target_triple: TargetTriple [TRACKED],
148 test: bool [TRACKED],
149 error_format: ErrorOutputType [UNTRACKED],
151 /// If `Some`, enable incremental compilation, using the given
152 /// directory to store intermediate results.
153 incremental: Option<PathBuf> [UNTRACKED],
154 assert_incr_state: Option<IncrementalStateAssertion> [UNTRACKED],
156 debugging_opts: DebuggingOptions [SUBSTRUCT],
157 prints: Vec<PrintRequest> [UNTRACKED],
158 /// Determines which borrow checker(s) to run. This is the parsed, sanitized
159 /// version of `debugging_opts.borrowck`, which is just a plain string.
160 borrowck_mode: BorrowckMode [UNTRACKED],
161 cg: CodegenOptions [SUBSTRUCT],
162 externs: Externs [UNTRACKED],
163 extern_dep_specs: ExternDepSpecs [UNTRACKED],
164 crate_name: Option<String> [TRACKED],
165 /// An optional name to use as the crate for std during std injection,
166 /// written `extern crate name as std`. Defaults to `std`. Used by
167 /// out-of-tree drivers.
168 alt_std_name: Option<String> [TRACKED],
169 /// Indicates how the compiler should treat unstable features.
170 unstable_features: UnstableFeatures [TRACKED],
172 /// Indicates whether this run of the compiler is actually rustdoc. This
173 /// is currently just a hack and will be removed eventually, so please
174 /// try to not rely on this too much.
175 actually_rustdoc: bool [TRACKED],
177 /// Control path trimming.
178 trimmed_def_paths: TrimmedDefPaths [TRACKED],
180 /// Specifications of codegen units / ThinLTO which are forced as a
181 /// result of parsing command line options. These are not necessarily
182 /// what rustc was invoked with, but massaged a bit to agree with
183 /// commands like `--emit llvm-ir` which they're often incompatible with
184 /// if we otherwise use the defaults of rustc.
185 cli_forced_codegen_units: Option<usize> [UNTRACKED],
186 cli_forced_thinlto_off: bool [UNTRACKED],
188 /// Remap source path prefixes in all output (messages, object files, debug, etc.).
189 remap_path_prefix: Vec<(PathBuf, PathBuf)> [TRACKED_NO_CRATE_HASH],
190 /// Base directory containing the `src/` for the Rust standard library, and
191 /// potentially `rustc` as well, if we can can find it. Right now it's always
192 /// `$sysroot/lib/rustlib/src/rust` (i.e. the `rustup` `rust-src` component).
194 /// This directory is what the virtual `/rustc/$hash` is translated back to,
195 /// if Rust was built with path remapping to `/rustc/$hash` enabled
196 /// (the `rust.remap-debuginfo` option in `config.toml`).
197 real_rust_source_base_dir: Option<PathBuf> [TRACKED_NO_CRATE_HASH],
199 edition: Edition [TRACKED],
201 /// `true` if we're emitting JSON blobs about each artifact produced
203 json_artifact_notifications: bool [TRACKED],
205 /// `true` if we're emitting a JSON blob containing the unused externs
206 json_unused_externs: bool [UNTRACKED],
208 pretty: Option<PpMode> [UNTRACKED],
210 /// The (potentially remapped) working directory
211 working_dir: RealFileName [TRACKED],
215 /// Defines all `CodegenOptions`/`DebuggingOptions` fields and parsers all at once. The goal of this
216 /// macro is to define an interface that can be programmatically used by the option parser
217 /// to initialize the struct without hardcoding field names all over the place.
219 /// The goal is to invoke this macro once with the correct fields, and then this macro generates all
220 /// necessary code. The main gotcha of this macro is the `cgsetters` module which is a bunch of
221 /// generated code to parse an option into its respective field in the struct. There are a few
222 /// hand-written parsers for parsing specific types of values in this module.
223 macro_rules! options {
224 ($struct_name:ident, $stat:ident, $optmod:ident, $prefix:expr, $outputname:expr,
225 $($( #[$attr:meta] )* $opt:ident : $t:ty = (
228 [$dep_tracking_marker:ident],
233 pub struct $struct_name { $(pub $opt: $t),* }
235 impl Default for $struct_name {
236 fn default() -> $struct_name {
237 $struct_name { $( $( #[$attr] )* $opt: $init),* }
243 matches: &getopts::Matches,
244 error_format: ErrorOutputType,
246 build_options(matches, $stat, $prefix, $outputname, error_format)
249 fn dep_tracking_hash(&self, for_crate_hash: bool, error_format: ErrorOutputType) -> u64 {
250 let mut sub_hashes = BTreeMap::new();
256 [$dep_tracking_marker]);
258 let mut hasher = DefaultHasher::new();
259 dep_tracking::stable_hash(sub_hashes,
268 pub const $stat: OptionDescrs<$struct_name> =
269 &[ $( (stringify!($opt), $optmod::$opt, desc::$parse, $desc) ),* ];
273 pub(super) fn $opt(cg: &mut super::$struct_name, v: Option<&str>) -> bool {
274 super::parse::$parse(&mut redirect_field!(cg.$opt), v)
281 // Sometimes different options need to build a common structure.
282 // That structure can be kept in one of the options' fields, the others become dummy.
283 macro_rules! redirect_field {
284 ($cg:ident.link_arg) => {
287 ($cg:ident.pre_link_arg) => {
290 ($cg:ident.$field:ident) => {
295 type OptionSetter<O> = fn(&mut O, v: Option<&str>) -> bool;
296 type OptionDescrs<O> = &'static [(&'static str, OptionSetter<O>, &'static str, &'static str)];
298 fn build_options<O: Default>(
299 matches: &getopts::Matches,
300 descrs: OptionDescrs<O>,
303 error_format: ErrorOutputType,
305 let mut op = O::default();
306 for option in matches.opt_strs(prefix) {
307 let (key, value) = match option.split_once('=') {
308 None => (option, None),
309 Some((k, v)) => (k.to_string(), Some(v)),
312 let option_to_lookup = key.replace("-", "_");
313 match descrs.iter().find(|(name, ..)| *name == option_to_lookup) {
314 Some((_, setter, type_desc, _)) => {
315 if !setter(&mut op, value) {
320 "{0} option `{1}` requires {2} ({3} {1}=<value>)",
321 outputname, key, type_desc, prefix
324 Some(value) => early_error(
327 "incorrect value `{}` for {} option `{}` - {} was expected",
328 value, outputname, key, type_desc
334 None => early_error(error_format, &format!("unknown {} option: `{}`", outputname, key)),
340 #[allow(non_upper_case_globals)]
342 pub const parse_no_flag: &str = "no value";
343 pub const parse_bool: &str = "one of: `y`, `yes`, `on`, `n`, `no`, or `off`";
344 pub const parse_opt_bool: &str = parse_bool;
345 pub const parse_string: &str = "a string";
346 pub const parse_opt_string: &str = parse_string;
347 pub const parse_string_push: &str = parse_string;
348 pub const parse_opt_pathbuf: &str = "a path";
349 pub const parse_list: &str = "a space-separated list of strings";
350 pub const parse_opt_comma_list: &str = "a comma-separated list of strings";
351 pub const parse_number: &str = "a number";
352 pub const parse_opt_number: &str = parse_number;
353 pub const parse_threads: &str = parse_number;
354 pub const parse_passes: &str = "a space-separated list of passes, or `all`";
355 pub const parse_panic_strategy: &str = "either `unwind` or `abort`";
356 pub const parse_opt_panic_strategy: &str = parse_panic_strategy;
357 pub const parse_relro_level: &str = "one of: `full`, `partial`, or `off`";
358 pub const parse_sanitizers: &str = "comma separated list of sanitizers: `address`, `cfi`, `hwaddress`, `leak`, `memory` or `thread`";
359 pub const parse_sanitizer_memory_track_origins: &str = "0, 1, or 2";
360 pub const parse_cfguard: &str =
361 "either a boolean (`yes`, `no`, `on`, `off`, etc), `checks`, or `nochecks`";
362 pub const parse_strip: &str = "either `none`, `debuginfo`, or `symbols`";
363 pub const parse_linker_flavor: &str = ::rustc_target::spec::LinkerFlavor::one_of();
364 pub const parse_optimization_fuel: &str = "crate=integer";
365 pub const parse_mir_spanview: &str = "`statement` (default), `terminator`, or `block`";
366 pub const parse_instrument_coverage: &str =
367 "`all` (default), `except-unused-generics`, `except-unused-functions`, or `off`";
368 pub const parse_unpretty: &str = "`string` or `string=string`";
369 pub const parse_treat_err_as_bug: &str = "either no value or a number bigger than 0";
370 pub const parse_lto: &str =
371 "either a boolean (`yes`, `no`, `on`, `off`, etc), `thin`, `fat`, or omitted";
372 pub const parse_linker_plugin_lto: &str =
373 "either a boolean (`yes`, `no`, `on`, `off`, etc), or the path to the linker plugin";
374 pub const parse_location_detail: &str =
375 "comma seperated list of location details to track: `file`, `line`, or `column`";
376 pub const parse_switch_with_opt_path: &str =
377 "an optional path to the profiling data output directory";
378 pub const parse_merge_functions: &str = "one of: `disabled`, `trampolines`, or `aliases`";
379 pub const parse_symbol_mangling_version: &str = "either `legacy` or `v0` (RFC 2603)";
380 pub const parse_src_file_hash: &str = "either `md5` or `sha1`";
381 pub const parse_relocation_model: &str =
382 "one of supported relocation models (`rustc --print relocation-models`)";
383 pub const parse_code_model: &str = "one of supported code models (`rustc --print code-models`)";
384 pub const parse_tls_model: &str = "one of supported TLS models (`rustc --print tls-models`)";
385 pub const parse_target_feature: &str = parse_string;
386 pub const parse_wasi_exec_model: &str = "either `command` or `reactor`";
387 pub const parse_split_debuginfo: &str =
388 "one of supported split-debuginfo modes (`off`, `packed`, or `unpacked`)";
389 pub const parse_gcc_ld: &str = "one of: no value, `lld`";
390 pub const parse_stack_protector: &str =
391 "one of (`none` (default), `basic`, `strong`, or `all`)";
392 pub const parse_branch_protection: &str =
393 "a `+` separated combination of `bti`, `b-key`, `pac-ret`, or `leaf`";
398 use std::str::FromStr;
400 /// This is for boolean options that don't take a value and start with
401 /// `no-`. This style of option is deprecated.
402 crate fn parse_no_flag(slot: &mut bool, v: Option<&str>) -> bool {
412 /// Use this for any boolean option that has a static default.
413 crate fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool {
415 Some("y") | Some("yes") | Some("on") | None => {
419 Some("n") | Some("no") | Some("off") => {
427 /// Use this for any boolean option that lacks a static default. (The
428 /// actions taken when such an option is not specified will depend on
429 /// other factors, such as other options, or target options.)
430 crate fn parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool {
432 Some("y") | Some("yes") | Some("on") | None => {
436 Some("n") | Some("no") | Some("off") => {
444 /// Use this for any string option that has a static default.
445 crate fn parse_string(slot: &mut String, v: Option<&str>) -> bool {
448 *slot = s.to_string();
455 /// Use this for any string option that lacks a static default.
456 crate fn parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool {
459 *slot = Some(s.to_string());
466 crate fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, v: Option<&str>) -> bool {
469 *slot = Some(PathBuf::from(s));
476 crate fn parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool {
479 slot.push(s.to_string());
486 crate fn parse_list(slot: &mut Vec<String>, v: Option<&str>) -> bool {
489 slot.extend(s.split_whitespace().map(|s| s.to_string()));
496 crate fn parse_location_detail(ld: &mut LocationDetail, v: Option<&str>) -> bool {
501 for s in v.split(',') {
503 "file" => ld.file = true,
504 "line" => ld.line = true,
505 "column" => ld.column = true,
515 crate fn parse_opt_comma_list(slot: &mut Option<Vec<String>>, v: Option<&str>) -> bool {
518 let mut v: Vec<_> = s.split(',').map(|s| s.to_string()).collect();
527 crate fn parse_threads(slot: &mut usize, v: Option<&str>) -> bool {
528 match v.and_then(|s| s.parse().ok()) {
530 *slot = ::num_cpus::get();
541 /// Use this for any numeric option that has a static default.
542 crate fn parse_number<T: Copy + FromStr>(slot: &mut T, v: Option<&str>) -> bool {
543 match v.and_then(|s| s.parse().ok()) {
552 /// Use this for any numeric option that lacks a static default.
553 crate fn parse_opt_number<T: Copy + FromStr>(slot: &mut Option<T>, v: Option<&str>) -> bool {
556 *slot = s.parse().ok();
563 crate fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
570 let mut passes = vec![];
571 if parse_list(&mut passes, v) {
581 crate fn parse_opt_panic_strategy(slot: &mut Option<PanicStrategy>, v: Option<&str>) -> bool {
583 Some("unwind") => *slot = Some(PanicStrategy::Unwind),
584 Some("abort") => *slot = Some(PanicStrategy::Abort),
590 crate fn parse_panic_strategy(slot: &mut PanicStrategy, v: Option<&str>) -> bool {
592 Some("unwind") => *slot = PanicStrategy::Unwind,
593 Some("abort") => *slot = PanicStrategy::Abort,
599 crate fn parse_relro_level(slot: &mut Option<RelroLevel>, v: Option<&str>) -> bool {
601 Some(s) => match s.parse::<RelroLevel>() {
602 Ok(level) => *slot = Some(level),
610 crate fn parse_sanitizers(slot: &mut SanitizerSet, v: Option<&str>) -> bool {
612 for s in v.split(',') {
614 "address" => SanitizerSet::ADDRESS,
615 "cfi" => SanitizerSet::CFI,
616 "leak" => SanitizerSet::LEAK,
617 "memory" => SanitizerSet::MEMORY,
618 "thread" => SanitizerSet::THREAD,
619 "hwaddress" => SanitizerSet::HWADDRESS,
629 crate fn parse_sanitizer_memory_track_origins(slot: &mut usize, v: Option<&str>) -> bool {
631 Some("2") | None => {
647 crate fn parse_strip(slot: &mut Strip, v: Option<&str>) -> bool {
649 Some("none") => *slot = Strip::None,
650 Some("debuginfo") => *slot = Strip::Debuginfo,
651 Some("symbols") => *slot = Strip::Symbols,
657 crate fn parse_cfguard(slot: &mut CFGuard, v: Option<&str>) -> bool {
659 let mut bool_arg = None;
660 if parse_opt_bool(&mut bool_arg, v) {
661 *slot = if bool_arg.unwrap() { CFGuard::Checks } else { CFGuard::Disabled };
667 None => CFGuard::Checks,
668 Some("checks") => CFGuard::Checks,
669 Some("nochecks") => CFGuard::NoChecks,
670 Some(_) => return false,
675 crate fn parse_linker_flavor(slot: &mut Option<LinkerFlavor>, v: Option<&str>) -> bool {
676 match v.and_then(LinkerFlavor::from_str) {
677 Some(lf) => *slot = Some(lf),
683 crate fn parse_optimization_fuel(slot: &mut Option<(String, u64)>, v: Option<&str>) -> bool {
687 let parts = s.split('=').collect::<Vec<_>>();
688 if parts.len() != 2 {
691 let crate_name = parts[0].to_string();
692 let fuel = parts[1].parse::<u64>();
696 *slot = Some((crate_name, fuel.unwrap()));
702 crate fn parse_unpretty(slot: &mut Option<String>, v: Option<&str>) -> bool {
705 Some(s) if s.split('=').count() <= 2 => {
706 *slot = Some(s.to_string());
713 crate fn parse_mir_spanview(slot: &mut Option<MirSpanview>, v: Option<&str>) -> bool {
715 let mut bool_arg = None;
716 if parse_opt_bool(&mut bool_arg, v) {
717 *slot = if bool_arg.unwrap() { Some(MirSpanview::Statement) } else { None };
724 *slot = Some(MirSpanview::Statement);
730 *slot = Some(match v.trim_end_matches('s') {
731 "statement" | "stmt" => MirSpanview::Statement,
732 "terminator" | "term" => MirSpanview::Terminator,
733 "block" | "basicblock" => MirSpanview::Block,
739 crate fn parse_instrument_coverage(
740 slot: &mut Option<InstrumentCoverage>,
744 let mut bool_arg = None;
745 if parse_opt_bool(&mut bool_arg, v) {
746 *slot = if bool_arg.unwrap() { Some(InstrumentCoverage::All) } else { None };
753 *slot = Some(InstrumentCoverage::All);
759 *slot = Some(match v {
760 "all" => InstrumentCoverage::All,
761 "except-unused-generics" | "except_unused_generics" => {
762 InstrumentCoverage::ExceptUnusedGenerics
764 "except-unused-functions" | "except_unused_functions" => {
765 InstrumentCoverage::ExceptUnusedFunctions
767 "off" | "no" | "n" | "false" | "0" => InstrumentCoverage::Off,
773 crate fn parse_treat_err_as_bug(slot: &mut Option<NonZeroUsize>, v: Option<&str>) -> bool {
776 *slot = s.parse().ok();
780 *slot = NonZeroUsize::new(1);
786 crate fn parse_lto(slot: &mut LtoCli, v: Option<&str>) -> bool {
788 let mut bool_arg = None;
789 if parse_opt_bool(&mut bool_arg, v) {
790 *slot = if bool_arg.unwrap() { LtoCli::Yes } else { LtoCli::No };
796 None => LtoCli::NoParam,
797 Some("thin") => LtoCli::Thin,
798 Some("fat") => LtoCli::Fat,
799 Some(_) => return false,
804 crate fn parse_linker_plugin_lto(slot: &mut LinkerPluginLto, v: Option<&str>) -> bool {
806 let mut bool_arg = None;
807 if parse_opt_bool(&mut bool_arg, v) {
808 *slot = if bool_arg.unwrap() {
809 LinkerPluginLto::LinkerPluginAuto
811 LinkerPluginLto::Disabled
818 None => LinkerPluginLto::LinkerPluginAuto,
819 Some(path) => LinkerPluginLto::LinkerPlugin(PathBuf::from(path)),
824 crate fn parse_switch_with_opt_path(slot: &mut SwitchWithOptPath, v: Option<&str>) -> bool {
826 None => SwitchWithOptPath::Enabled(None),
827 Some(path) => SwitchWithOptPath::Enabled(Some(PathBuf::from(path))),
832 crate fn parse_merge_functions(slot: &mut Option<MergeFunctions>, v: Option<&str>) -> bool {
833 match v.and_then(|s| MergeFunctions::from_str(s).ok()) {
834 Some(mergefunc) => *slot = Some(mergefunc),
840 crate fn parse_relocation_model(slot: &mut Option<RelocModel>, v: Option<&str>) -> bool {
841 match v.and_then(|s| RelocModel::from_str(s).ok()) {
842 Some(relocation_model) => *slot = Some(relocation_model),
843 None if v == Some("default") => *slot = None,
849 crate fn parse_code_model(slot: &mut Option<CodeModel>, v: Option<&str>) -> bool {
850 match v.and_then(|s| CodeModel::from_str(s).ok()) {
851 Some(code_model) => *slot = Some(code_model),
857 crate fn parse_tls_model(slot: &mut Option<TlsModel>, v: Option<&str>) -> bool {
858 match v.and_then(|s| TlsModel::from_str(s).ok()) {
859 Some(tls_model) => *slot = Some(tls_model),
865 crate fn parse_symbol_mangling_version(
866 slot: &mut Option<SymbolManglingVersion>,
870 Some("legacy") => Some(SymbolManglingVersion::Legacy),
871 Some("v0") => Some(SymbolManglingVersion::V0),
877 crate fn parse_src_file_hash(
878 slot: &mut Option<SourceFileHashAlgorithm>,
881 match v.and_then(|s| SourceFileHashAlgorithm::from_str(s).ok()) {
882 Some(hash_kind) => *slot = Some(hash_kind),
888 crate fn parse_target_feature(slot: &mut String, v: Option<&str>) -> bool {
891 if !slot.is_empty() {
901 crate fn parse_wasi_exec_model(slot: &mut Option<WasiExecModel>, v: Option<&str>) -> bool {
903 Some("command") => *slot = Some(WasiExecModel::Command),
904 Some("reactor") => *slot = Some(WasiExecModel::Reactor),
910 crate fn parse_split_debuginfo(slot: &mut Option<SplitDebuginfo>, v: Option<&str>) -> bool {
911 match v.and_then(|s| SplitDebuginfo::from_str(s).ok()) {
912 Some(e) => *slot = Some(e),
918 crate fn parse_gcc_ld(slot: &mut Option<LdImpl>, v: Option<&str>) -> bool {
920 None => *slot = None,
921 Some("lld") => *slot = Some(LdImpl::Lld),
927 crate fn parse_stack_protector(slot: &mut StackProtector, v: Option<&str>) -> bool {
928 match v.and_then(|s| StackProtector::from_str(s).ok()) {
929 Some(ssp) => *slot = ssp,
935 crate fn parse_branch_protection(slot: &mut BranchProtection, v: Option<&str>) -> bool {
938 for opt in s.split('+') {
940 "bti" => slot.bti = true,
941 "pac-ret" if slot.pac_ret.is_none() => {
942 slot.pac_ret = Some(PacRet { leaf: false, key: PAuthKey::A })
944 "leaf" => match slot.pac_ret.as_mut() {
945 Some(pac) => pac.leaf = true,
948 "b-key" => match slot.pac_ret.as_mut() {
949 Some(pac) => pac.key = PAuthKey::B,
964 CodegenOptions, CG_OPTIONS, cgopts, "C", "codegen",
966 // This list is in alphabetical order.
968 // If you add a new option, please update:
969 // - compiler/rustc_interface/src/tests.rs
970 // - src/doc/rustc/src/codegen-options/index.md
972 ar: String = (String::new(), parse_string, [UNTRACKED],
973 "this option is deprecated and does nothing"),
974 branch_protection: BranchProtection = (BranchProtection::default(), parse_branch_protection, [TRACKED],
975 "set options for branch target identification and pointer authentication on AArch64"),
976 code_model: Option<CodeModel> = (None, parse_code_model, [TRACKED],
977 "choose the code model to use (`rustc --print code-models` for details)"),
978 codegen_units: Option<usize> = (None, parse_opt_number, [UNTRACKED],
979 "divide crate into N units to optimize in parallel"),
980 control_flow_guard: CFGuard = (CFGuard::Disabled, parse_cfguard, [TRACKED],
981 "use Windows Control Flow Guard (default: no)"),
982 debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
983 "explicitly enable the `cfg(debug_assertions)` directive"),
984 debuginfo: usize = (0, parse_number, [TRACKED],
985 "debug info emission level (0 = no debug info, 1 = line tables only, \
986 2 = full debug info with variable and type information; default: 0)"),
987 default_linker_libraries: bool = (false, parse_bool, [UNTRACKED],
988 "allow the linker to link its default libraries (default: no)"),
989 embed_bitcode: bool = (true, parse_bool, [TRACKED],
990 "emit bitcode in rlibs (default: yes)"),
991 extra_filename: String = (String::new(), parse_string, [UNTRACKED],
992 "extra data to put in each output filename"),
993 force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
994 "force use of the frame pointers"),
995 force_unwind_tables: Option<bool> = (None, parse_opt_bool, [TRACKED],
996 "force use of unwind tables"),
997 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
998 "enable incremental compilation"),
999 inline_threshold: Option<u32> = (None, parse_opt_number, [TRACKED],
1000 "set the threshold for inlining a function"),
1001 link_arg: (/* redirected to link_args */) = ((), parse_string_push, [UNTRACKED],
1002 "a single extra argument to append to the linker invocation (can be used several times)"),
1003 link_args: Vec<String> = (Vec::new(), parse_list, [UNTRACKED],
1004 "extra arguments to append to the linker invocation (space separated)"),
1005 link_dead_code: Option<bool> = (None, parse_opt_bool, [TRACKED],
1006 "keep dead code at link time (useful for code coverage) (default: no)"),
1007 link_self_contained: Option<bool> = (None, parse_opt_bool, [UNTRACKED],
1008 "control whether to link Rust provided C objects/libraries or rely
1009 on C toolchain installed in the system"),
1010 linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1011 "system linker to link outputs with"),
1012 linker_flavor: Option<LinkerFlavor> = (None, parse_linker_flavor, [UNTRACKED],
1014 linker_plugin_lto: LinkerPluginLto = (LinkerPluginLto::Disabled,
1015 parse_linker_plugin_lto, [TRACKED],
1016 "generate build artifacts that are compatible with linker-based LTO"),
1017 llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1018 "a list of arguments to pass to LLVM (space separated)"),
1019 lto: LtoCli = (LtoCli::Unspecified, parse_lto, [TRACKED],
1020 "perform LLVM link-time optimizations"),
1021 metadata: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1022 "metadata to mangle symbol names with"),
1023 no_prepopulate_passes: bool = (false, parse_no_flag, [TRACKED],
1024 "give an empty list of passes to the pass manager"),
1025 no_redzone: Option<bool> = (None, parse_opt_bool, [TRACKED],
1026 "disable the use of the redzone"),
1027 no_stack_check: bool = (false, parse_no_flag, [UNTRACKED],
1028 "this option is deprecated and does nothing"),
1029 no_vectorize_loops: bool = (false, parse_no_flag, [TRACKED],
1030 "disable loop vectorization optimization passes"),
1031 no_vectorize_slp: bool = (false, parse_no_flag, [TRACKED],
1032 "disable LLVM's SLP vectorization pass"),
1033 opt_level: String = ("0".to_string(), parse_string, [TRACKED],
1034 "optimization level (0-3, s, or z; default: 0)"),
1035 overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1036 "use overflow checks for integer arithmetic"),
1037 panic: Option<PanicStrategy> = (None, parse_opt_panic_strategy, [TRACKED],
1038 "panic strategy to compile crate with"),
1039 passes: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1040 "a list of extra LLVM passes to run (space separated)"),
1041 prefer_dynamic: bool = (false, parse_bool, [TRACKED],
1042 "prefer dynamic linking to static linking (default: no)"),
1043 profile_generate: SwitchWithOptPath = (SwitchWithOptPath::Disabled,
1044 parse_switch_with_opt_path, [TRACKED],
1045 "compile the program with profiling instrumentation"),
1046 profile_use: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1047 "use the given `.profdata` file for profile-guided optimization"),
1048 relocation_model: Option<RelocModel> = (None, parse_relocation_model, [TRACKED],
1049 "control generation of position-independent code (PIC) \
1050 (`rustc --print relocation-models` for details)"),
1051 remark: Passes = (Passes::Some(Vec::new()), parse_passes, [UNTRACKED],
1052 "print remarks for these optimization passes (space separated, or \"all\")"),
1053 rpath: bool = (false, parse_bool, [UNTRACKED],
1054 "set rpath values in libs/exes (default: no)"),
1055 save_temps: bool = (false, parse_bool, [UNTRACKED],
1056 "save all temporary output files during compilation (default: no)"),
1057 soft_float: bool = (false, parse_bool, [TRACKED],
1058 "use soft float ABI (*eabihf targets only) (default: no)"),
1059 split_debuginfo: Option<SplitDebuginfo> = (None, parse_split_debuginfo, [TRACKED],
1060 "how to handle split-debuginfo, a platform-specific option"),
1061 strip: Strip = (Strip::None, parse_strip, [UNTRACKED],
1062 "tell the linker which information to strip (`none` (default), `debuginfo` or `symbols`)"),
1063 target_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1064 "select target processor (`rustc --print target-cpus` for details)"),
1065 target_feature: String = (String::new(), parse_target_feature, [TRACKED],
1066 "target specific attributes. (`rustc --print target-features` for details). \
1067 This feature is unsafe."),
1069 // This list is in alphabetical order.
1071 // If you add a new option, please update:
1072 // - compiler/rustc_interface/src/tests.rs
1073 // - src/doc/rustc/src/codegen-options/index.md
1077 DebuggingOptions, DB_OPTIONS, dbopts, "Z", "debugging",
1079 // This list is in alphabetical order.
1081 // If you add a new option, please update:
1082 // - compiler/rustc_interface/src/tests.rs
1084 allow_features: Option<Vec<String>> = (None, parse_opt_comma_list, [TRACKED],
1085 "only allow the listed language features to be enabled in code (space separated)"),
1086 always_encode_mir: bool = (false, parse_bool, [TRACKED],
1087 "encode MIR of all functions into the crate metadata (default: no)"),
1088 assume_incomplete_release: bool = (false, parse_bool, [TRACKED],
1089 "make cfg(version) treat the current version as incomplete (default: no)"),
1090 asm_comments: bool = (false, parse_bool, [TRACKED],
1091 "generate comments into the assembly (may change behavior) (default: no)"),
1092 assert_incr_state: Option<String> = (None, parse_opt_string, [UNTRACKED],
1093 "assert that the incremental cache is in given state: \
1094 either `loaded` or `not-loaded`."),
1095 ast_json: bool = (false, parse_bool, [UNTRACKED],
1096 "print the AST as JSON and halt (default: no)"),
1097 ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED],
1098 "print the pre-expansion AST as JSON and halt (default: no)"),
1099 binary_dep_depinfo: bool = (false, parse_bool, [TRACKED],
1100 "include artifacts (sysroot, crate dependencies) used during compilation in dep-info \
1102 borrowck: String = ("migrate".to_string(), parse_string, [UNTRACKED],
1103 "select which borrowck is used (`mir` or `migrate`) (default: `migrate`)"),
1104 cgu_partitioning_strategy: Option<String> = (None, parse_opt_string, [TRACKED],
1105 "the codegen unit partitioning strategy to use"),
1106 chalk: bool = (false, parse_bool, [TRACKED],
1107 "enable the experimental Chalk-based trait solving engine"),
1108 codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
1109 "the backend to use"),
1110 combine_cgu: bool = (false, parse_bool, [TRACKED],
1111 "combine CGUs into a single one"),
1112 crate_attr: Vec<String> = (Vec::new(), parse_string_push, [TRACKED],
1113 "inject the given attribute in the crate"),
1114 debug_info_for_profiling: bool = (false, parse_bool, [TRACKED],
1115 "emit discriminators and other data necessary for AutoFDO"),
1116 debug_macros: bool = (false, parse_bool, [TRACKED],
1117 "emit line numbers debug info inside macros (default: no)"),
1118 deduplicate_diagnostics: bool = (true, parse_bool, [UNTRACKED],
1119 "deduplicate identical diagnostics (default: yes)"),
1120 dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
1121 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
1122 themselves (default: no)"),
1123 dep_tasks: bool = (false, parse_bool, [UNTRACKED],
1124 "print tasks that execute and the color their dep node gets (requires debug build) \
1126 dont_buffer_diagnostics: bool = (false, parse_bool, [UNTRACKED],
1127 "emit diagnostics rather than buffering (breaks NLL error downgrading, sorting) \
1129 dual_proc_macros: bool = (false, parse_bool, [TRACKED],
1130 "load proc macros for both target and host, but only link to the target (default: no)"),
1131 dump_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1132 "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv) \
1134 dump_mir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1135 "dump MIR state to file.
1136 `val` is used to select which passes and functions to dump. For example:
1137 `all` matches all passes and functions,
1138 `foo` matches all passes for functions whose name contains 'foo',
1139 `foo & ConstProp` only the 'ConstProp' pass for function names containing 'foo',
1140 `foo | bar` all passes for function names containing 'foo' or 'bar'."),
1141 dump_mir_dataflow: bool = (false, parse_bool, [UNTRACKED],
1142 "in addition to `.mir` files, create graphviz `.dot` files with dataflow results \
1144 dump_mir_dir: String = ("mir_dump".to_string(), parse_string, [UNTRACKED],
1145 "the directory the MIR is dumped into (default: `mir_dump`)"),
1146 dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED],
1147 "exclude the pass number when dumping MIR (used in tests) (default: no)"),
1148 dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED],
1149 "in addition to `.mir` files, create graphviz `.dot` files (and with \
1150 `-Z instrument-coverage`, also create a `.dot` file for the MIR-derived \
1151 coverage graph) (default: no)"),
1152 dump_mir_spanview: Option<MirSpanview> = (None, parse_mir_spanview, [UNTRACKED],
1153 "in addition to `.mir` files, create `.html` files to view spans for \
1154 all `statement`s (including terminators), only `terminator` spans, or \
1155 computed `block` spans (one span encompassing a block's terminator and \
1156 all statements). If `-Z instrument-coverage` is also enabled, create \
1157 an additional `.html` file showing the computed coverage spans."),
1158 emit_future_incompat_report: bool = (false, parse_bool, [UNTRACKED],
1159 "emits a future-incompatibility report for lints (RFC 2834)"),
1160 emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
1161 "emit a section containing stack size metadata (default: no)"),
1162 fewer_names: Option<bool> = (None, parse_opt_bool, [TRACKED],
1163 "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR) \
1165 force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
1166 "force all crates to be `rustc_private` unstable (default: no)"),
1167 fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
1168 "set the optimization fuel quota for a crate"),
1169 function_sections: Option<bool> = (None, parse_opt_bool, [TRACKED],
1170 "whether each function should go in its own section"),
1171 future_incompat_test: bool = (false, parse_bool, [UNTRACKED],
1172 "forces all lints to be future incompatible, used for internal testing (default: no)"),
1173 gcc_ld: Option<LdImpl> = (None, parse_gcc_ld, [TRACKED], "implementation of ld used by cc"),
1174 graphviz_dark_mode: bool = (false, parse_bool, [UNTRACKED],
1175 "use dark-themed colors in graphviz output (default: no)"),
1176 graphviz_font: String = ("Courier, monospace".to_string(), parse_string, [UNTRACKED],
1177 "use the given `fontname` in graphviz output; can be overridden by setting \
1178 environment variable `RUSTC_GRAPHVIZ_FONT` (default: `Courier, monospace`)"),
1179 hir_stats: bool = (false, parse_bool, [UNTRACKED],
1180 "print some statistics about AST and HIR (default: no)"),
1181 human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
1182 "generate human-readable, predictable names for codegen units (default: no)"),
1183 identify_regions: bool = (false, parse_bool, [UNTRACKED],
1184 "display unnamed regions as `'<id>`, using a non-ident unique id (default: no)"),
1185 incremental_ignore_spans: bool = (false, parse_bool, [UNTRACKED],
1186 "ignore spans during ICH computation -- used for testing (default: no)"),
1187 incremental_info: bool = (false, parse_bool, [UNTRACKED],
1188 "print high-level information about incremental reuse (or the lack thereof) \
1190 incremental_relative_spans: bool = (false, parse_bool, [TRACKED],
1191 "hash spans relative to their parent item for incr. comp. (default: no)"),
1192 incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
1193 "verify incr. comp. hashes of green query instances (default: no)"),
1194 inline_mir: Option<bool> = (None, parse_opt_bool, [TRACKED],
1195 "enable MIR inlining (default: no)"),
1196 inline_mir_threshold: Option<usize> = (None, parse_opt_number, [TRACKED],
1197 "a default MIR inlining threshold (default: 50)"),
1198 inline_mir_hint_threshold: Option<usize> = (None, parse_opt_number, [TRACKED],
1199 "inlining threshold for functions with inline hint (default: 100)"),
1200 inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
1201 "control whether `#[inline]` functions are in all CGUs"),
1202 input_stats: bool = (false, parse_bool, [UNTRACKED],
1203 "gather statistics about the input (default: no)"),
1204 instrument_coverage: Option<InstrumentCoverage> = (None, parse_instrument_coverage, [TRACKED],
1205 "instrument the generated code to support LLVM source-based code coverage \
1206 reports (note, the compiler build config must include `profiler = true`); \
1207 implies `-Z symbol-mangling-version=v0`. Optional values are:
1208 `=all` (implicit value)
1209 `=except-unused-generics`
1210 `=except-unused-functions`
1212 instrument_mcount: bool = (false, parse_bool, [TRACKED],
1213 "insert function instrument code for mcount-based tracing (default: no)"),
1214 keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED],
1215 "keep hygiene data after analysis (default: no)"),
1216 link_native_libraries: bool = (true, parse_bool, [UNTRACKED],
1217 "link native libraries in the linker invocation (default: yes)"),
1218 link_only: bool = (false, parse_bool, [TRACKED],
1219 "link the `.rlink` file generated by `-Z no-link` (default: no)"),
1220 llvm_plugins: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1221 "a list LLVM plugins to enable (space separated)"),
1222 llvm_time_trace: bool = (false, parse_bool, [UNTRACKED],
1223 "generate JSON tracing data file from LLVM data (default: no)"),
1224 location_detail: LocationDetail = (LocationDetail::all(), parse_location_detail, [TRACKED],
1225 "comma seperated list of location details to be tracked when using caller_location \
1226 valid options are `file`, `line`, and `column` (default: all)"),
1227 ls: bool = (false, parse_bool, [UNTRACKED],
1228 "list the symbols defined by a library crate (default: no)"),
1229 macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1230 "show macro backtraces (default: no)"),
1231 merge_functions: Option<MergeFunctions> = (None, parse_merge_functions, [TRACKED],
1232 "control the operation of the MergeFunctions LLVM pass, taking \
1233 the same values as the target option of the same name"),
1234 meta_stats: bool = (false, parse_bool, [UNTRACKED],
1235 "gather metadata statistics (default: no)"),
1236 mir_emit_retag: bool = (false, parse_bool, [TRACKED],
1237 "emit Retagging MIR statements, interpreted e.g., by miri; implies -Zmir-opt-level=0 \
1239 mir_opt_level: Option<usize> = (None, parse_opt_number, [TRACKED],
1240 "MIR optimization level (0-4; default: 1 in non optimized builds and 2 in optimized builds)"),
1241 move_size_limit: Option<usize> = (None, parse_opt_number, [TRACKED],
1242 "the size at which the `large_assignments` lint starts to be emitted"),
1243 mutable_noalias: Option<bool> = (None, parse_opt_bool, [TRACKED],
1244 "emit noalias metadata for mutable references (default: yes)"),
1245 new_llvm_pass_manager: Option<bool> = (None, parse_opt_bool, [TRACKED],
1246 "use new LLVM pass manager (default: no)"),
1247 nll_facts: bool = (false, parse_bool, [UNTRACKED],
1248 "dump facts from NLL analysis into side files (default: no)"),
1249 nll_facts_dir: String = ("nll-facts".to_string(), parse_string, [UNTRACKED],
1250 "the directory the NLL facts are dumped into (default: `nll-facts`)"),
1251 no_analysis: bool = (false, parse_no_flag, [UNTRACKED],
1252 "parse and expand the source, but run no analysis"),
1253 no_codegen: bool = (false, parse_no_flag, [TRACKED_NO_CRATE_HASH],
1254 "run all passes except codegen; no output"),
1255 no_generate_arange_section: bool = (false, parse_no_flag, [TRACKED],
1256 "omit DWARF address ranges that give faster lookups"),
1257 no_interleave_lints: bool = (false, parse_no_flag, [UNTRACKED],
1258 "execute lints separately; allows benchmarking individual lints"),
1259 no_leak_check: bool = (false, parse_no_flag, [UNTRACKED],
1260 "disable the 'leak check' for subtyping; unsound, but useful for tests"),
1261 no_link: bool = (false, parse_no_flag, [TRACKED],
1262 "compile without linking"),
1263 no_parallel_llvm: bool = (false, parse_no_flag, [UNTRACKED],
1264 "run LLVM in non-parallel mode (while keeping codegen-units and ThinLTO)"),
1265 no_unique_section_names: bool = (false, parse_bool, [TRACKED],
1266 "do not use unique names for text and data sections when -Z function-sections is used"),
1267 no_profiler_runtime: bool = (false, parse_no_flag, [TRACKED],
1268 "prevent automatic injection of the profiler_builtins crate"),
1269 normalize_docs: bool = (false, parse_bool, [TRACKED],
1270 "normalize associated items in rustdoc when generating documentation"),
1271 osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
1272 "pass `-install_name @rpath/...` to the macOS linker (default: no)"),
1273 panic_abort_tests: bool = (false, parse_bool, [TRACKED],
1274 "support compiling tests with panic=abort (default: no)"),
1275 panic_in_drop: PanicStrategy = (PanicStrategy::Unwind, parse_panic_strategy, [TRACKED],
1276 "panic strategy for panics in drops"),
1277 parse_only: bool = (false, parse_bool, [UNTRACKED],
1278 "parse only; do not compile, assemble, or link (default: no)"),
1279 partially_uninit_const_threshold: Option<usize> = (None, parse_opt_number, [TRACKED],
1280 "allow generating const initializers with mixed init/uninit bytes, \
1281 and set the maximum total size of a const allocation for which this is allowed (default: never)"),
1282 perf_stats: bool = (false, parse_bool, [UNTRACKED],
1283 "print some performance-related statistics (default: no)"),
1284 pick_stable_methods_before_any_unstable: bool = (true, parse_bool, [TRACKED],
1285 "try to pick stable methods first before picking any unstable methods (default: yes)"),
1286 plt: Option<bool> = (None, parse_opt_bool, [TRACKED],
1287 "whether to use the PLT when calling into shared libraries;
1288 only has effect for PIC code on systems with ELF binaries
1289 (default: PLT is disabled if full relro is enabled)"),
1290 polonius: bool = (false, parse_bool, [TRACKED],
1291 "enable polonius-based borrow-checker (default: no)"),
1292 polymorphize: bool = (false, parse_bool, [TRACKED],
1293 "perform polymorphization analysis"),
1294 pre_link_arg: (/* redirected to pre_link_args */) = ((), parse_string_push, [UNTRACKED],
1295 "a single extra argument to prepend the linker invocation (can be used several times)"),
1296 pre_link_args: Vec<String> = (Vec::new(), parse_list, [UNTRACKED],
1297 "extra arguments to prepend to the linker invocation (space separated)"),
1298 precise_enum_drop_elaboration: bool = (true, parse_bool, [TRACKED],
1299 "use a more precise version of drop elaboration for matches on enums (default: yes). \
1300 This results in better codegen, but has caused miscompilations on some tier 2 platforms. \
1301 See #77382 and #74551."),
1302 print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
1303 "make rustc print the total optimization fuel used by a crate"),
1304 print_link_args: bool = (false, parse_bool, [UNTRACKED],
1305 "print the arguments passed to the linker (default: no)"),
1306 print_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1307 "print the LLVM optimization passes being run (default: no)"),
1308 print_mono_items: Option<String> = (None, parse_opt_string, [UNTRACKED],
1309 "print the result of the monomorphization collection pass"),
1310 print_type_sizes: bool = (false, parse_bool, [UNTRACKED],
1311 "print layout information for each type encountered (default: no)"),
1312 proc_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1313 "show backtraces for panics during proc-macro execution (default: no)"),
1314 profile: bool = (false, parse_bool, [TRACKED],
1315 "insert profiling code (default: no)"),
1316 profile_closures: bool = (false, parse_no_flag, [UNTRACKED],
1317 "profile size of closures"),
1318 profile_emit: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1319 "file path to emit profiling data at runtime when using 'profile' \
1320 (default based on relative source path)"),
1321 profiler_runtime: String = (String::from("profiler_builtins"), parse_string, [TRACKED],
1322 "name of the profiler runtime crate to automatically inject (default: `profiler_builtins`)"),
1323 profile_sample_use: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1324 "use the given `.prof` file for sampled profile-guided optimization (also known as AutoFDO)"),
1325 query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1326 "enable queries of the dependency graph for regression testing (default: no)"),
1327 query_stats: bool = (false, parse_bool, [UNTRACKED],
1328 "print some statistics about the query system (default: no)"),
1329 randomize_layout: bool = (false, parse_bool, [TRACKED],
1330 "randomize the layout of types (default: no)"),
1331 relax_elf_relocations: Option<bool> = (None, parse_opt_bool, [TRACKED],
1332 "whether ELF relocations can be relaxed"),
1333 relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
1334 "choose which RELRO level to use"),
1335 remap_cwd_prefix: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1336 "remap paths under the current working directory to this path prefix"),
1337 simulate_remapped_rust_src_base: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1338 "simulate the effect of remap-debuginfo = true at bootstrapping by remapping path \
1339 to rust's source base directory. only meant for testing purposes"),
1340 report_delayed_bugs: bool = (false, parse_bool, [TRACKED],
1341 "immediately print bugs registered with `delay_span_bug` (default: no)"),
1342 sanitizer: SanitizerSet = (SanitizerSet::empty(), parse_sanitizers, [TRACKED],
1344 sanitizer_memory_track_origins: usize = (0, parse_sanitizer_memory_track_origins, [TRACKED],
1345 "enable origins tracking in MemorySanitizer"),
1346 sanitizer_recover: SanitizerSet = (SanitizerSet::empty(), parse_sanitizers, [TRACKED],
1347 "enable recovery for selected sanitizers"),
1348 saturating_float_casts: Option<bool> = (None, parse_opt_bool, [TRACKED],
1349 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1350 the max/min integer respectively, and NaN is mapped to 0 (default: yes)"),
1351 save_analysis: bool = (false, parse_bool, [UNTRACKED],
1352 "write syntax and type analysis (in JSON format) information, in \
1353 addition to normal output (default: no)"),
1354 self_profile: SwitchWithOptPath = (SwitchWithOptPath::Disabled,
1355 parse_switch_with_opt_path, [UNTRACKED],
1356 "run the self profiler and output the raw event data"),
1357 /// keep this in sync with the event filter names in librustc_data_structures/profiling.rs
1358 self_profile_events: Option<Vec<String>> = (None, parse_opt_comma_list, [UNTRACKED],
1359 "specify the events recorded by the self profiler;
1360 for example: `-Z self-profile-events=default,query-keys`
1361 all options: none, all, default, generic-activity, query-provider, query-cache-hit
1362 query-blocked, incr-cache-load, incr-result-hashing, query-keys, function-args, args, llvm, artifact-sizes"),
1363 share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
1364 "make the current crate share its generic instantiations"),
1365 show_span: Option<String> = (None, parse_opt_string, [TRACKED],
1366 "show spans for compiler debugging (expr|pat|ty)"),
1367 span_debug: bool = (false, parse_bool, [UNTRACKED],
1368 "forward proc_macro::Span's `Debug` impl to `Span`"),
1369 /// o/w tests have closure@path
1370 span_free_formats: bool = (false, parse_bool, [UNTRACKED],
1371 "exclude spans when debug-printing compiler state (default: no)"),
1372 src_hash_algorithm: Option<SourceFileHashAlgorithm> = (None, parse_src_file_hash, [TRACKED],
1373 "hash algorithm of source files in debug info (`md5`, `sha1`, or `sha256`)"),
1374 stack_protector: StackProtector = (StackProtector::None, parse_stack_protector, [TRACKED],
1375 "control stack smash protection strategy (`rustc --print stack-protector-strategies` for details)"),
1376 strip: Strip = (Strip::None, parse_strip, [UNTRACKED],
1377 "tell the linker which information to strip (`none` (default), `debuginfo` or `symbols`)"),
1378 split_dwarf_inlining: bool = (true, parse_bool, [UNTRACKED],
1379 "provide minimal debug info in the object/executable to facilitate online \
1380 symbolication/stack traces in the absence of .dwo/.dwp files when using Split DWARF"),
1381 symbol_mangling_version: Option<SymbolManglingVersion> = (None,
1382 parse_symbol_mangling_version, [TRACKED],
1383 "which mangling version to use for symbol names ('legacy' (default) or 'v0')"),
1384 teach: bool = (false, parse_bool, [TRACKED],
1385 "show extended diagnostic help (default: no)"),
1386 temps_dir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1387 "the directory the intermediate files are written to"),
1388 terminal_width: Option<usize> = (None, parse_opt_number, [UNTRACKED],
1389 "set the current terminal width"),
1390 tune_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1391 "select processor to schedule for (`rustc --print target-cpus` for details)"),
1392 thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
1393 "enable ThinLTO when possible"),
1394 thir_unsafeck: bool = (false, parse_bool, [TRACKED],
1395 "use the THIR unsafety checker (default: no)"),
1396 /// We default to 1 here since we want to behave like
1397 /// a sequential compiler for now. This'll likely be adjusted
1398 /// in the future. Note that -Zthreads=0 is the way to get
1399 /// the num_cpus behavior.
1400 threads: usize = (1, parse_threads, [UNTRACKED],
1401 "use a thread pool with N threads"),
1402 time: bool = (false, parse_bool, [UNTRACKED],
1403 "measure time of rustc processes (default: no)"),
1404 time_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1405 "measure time of each LLVM pass (default: no)"),
1406 time_passes: bool = (false, parse_bool, [UNTRACKED],
1407 "measure time of each rustc pass (default: no)"),
1408 tls_model: Option<TlsModel> = (None, parse_tls_model, [TRACKED],
1409 "choose the TLS model to use (`rustc --print tls-models` for details)"),
1410 trace_macros: bool = (false, parse_bool, [UNTRACKED],
1411 "for every macro invocation, print its name and arguments (default: no)"),
1412 trap_unreachable: Option<bool> = (None, parse_opt_bool, [TRACKED],
1413 "generate trap instructions for unreachable intrinsics (default: use target setting, usually yes)"),
1414 treat_err_as_bug: Option<NonZeroUsize> = (None, parse_treat_err_as_bug, [TRACKED],
1415 "treat error number `val` that occurs as bug"),
1416 trim_diagnostic_paths: bool = (true, parse_bool, [UNTRACKED],
1417 "in diagnostics, use heuristics to shorten paths referring to items"),
1418 ui_testing: bool = (false, parse_bool, [UNTRACKED],
1419 "emit compiler diagnostics in a form suitable for UI testing (default: no)"),
1420 unleash_the_miri_inside_of_you: bool = (false, parse_bool, [TRACKED],
1421 "take the brakes off const evaluation. NOTE: this is unsound (default: no)"),
1422 unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
1423 "present the input source, unstable (and less-pretty) variants;
1424 `normal`, `identified`,
1425 `expanded`, `expanded,identified`,
1426 `expanded,hygiene` (with internal representations),
1427 `everybody_loops` (all function bodies replaced with `loop {}`),
1428 `ast-tree` (raw AST before expansion),
1429 `ast-tree,expanded` (raw AST after expansion),
1430 `hir` (the HIR), `hir,identified`,
1431 `hir,typed` (HIR with types for each node),
1432 `hir-tree` (dump the raw HIR),
1433 `mir` (the MIR), or `mir-cfg` (graphviz formatted MIR)"),
1434 unsound_mir_opts: bool = (false, parse_bool, [TRACKED],
1435 "enable unsound and buggy MIR optimizations (default: no)"),
1436 unstable_options: bool = (false, parse_bool, [UNTRACKED],
1437 "adds unstable command line options to rustc interface (default: no)"),
1438 use_ctors_section: Option<bool> = (None, parse_opt_bool, [TRACKED],
1439 "use legacy .ctors section for initializers rather than .init_array"),
1440 validate_mir: bool = (false, parse_bool, [UNTRACKED],
1441 "validate MIR after each transformation"),
1442 verbose: bool = (false, parse_bool, [UNTRACKED],
1443 "in general, enable more debug printouts (default: no)"),
1444 verify_llvm_ir: bool = (false, parse_bool, [TRACKED],
1445 "verify LLVM IR (default: no)"),
1446 wasi_exec_model: Option<WasiExecModel> = (None, parse_wasi_exec_model, [TRACKED],
1447 "whether to build a wasi command or reactor"),
1449 // This list is in alphabetical order.
1451 // If you add a new option, please update:
1452 // - compiler/rustc_interface/src/tests.rs
1455 #[derive(Clone, Hash, PartialEq, Eq, Debug)]
1456 pub enum WasiExecModel {
1461 #[derive(Clone, Copy, Hash)]