3 use crate::early_error
;
5 use crate::search_paths
::SearchPath
;
6 use crate::utils
::NativeLibKind
;
8 use rustc_target
::spec
::{CodeModel, LinkerFlavor, MergeFunctions, PanicStrategy}
;
9 use rustc_target
::spec
::{RelocModel, RelroLevel, SplitDebuginfo, TargetTriple, TlsModel}
;
11 use rustc_feature
::UnstableFeatures
;
12 use rustc_span
::edition
::Edition
;
13 use rustc_span
::SourceFileHashAlgorithm
;
15 use std
::collections
::BTreeMap
;
17 use std
::collections
::hash_map
::DefaultHasher
;
18 use std
::hash
::Hasher
;
19 use std
::path
::PathBuf
;
22 macro_rules
! hash_option
{
23 ($opt_name
:ident
, $opt_expr
:expr
, $sub_hashes
:expr
, [UNTRACKED
]) => {{}
};
24 ($opt_name
:ident
, $opt_expr
:expr
, $sub_hashes
:expr
, [TRACKED
]) => {{
26 .insert(stringify
!($opt_name
), $opt_expr
as &dyn dep_tracking
::DepTrackingHash
)
29 panic
!("duplicate key in CLI DepTrackingHash: {}", stringify
!($opt_name
))
34 macro_rules
! top_level_options
{
35 (pub struct Options
{ $
(
36 $opt
:ident
: $t
:ty
[$dep_tracking_marker
:ident $
($warn_val
:expr
, $warn_text
:expr
)*],
44 pub fn dep_tracking_hash(&self) -> u64 {
45 let mut sub_hashes
= BTreeMap
::new();
50 [$dep_tracking_marker $
($warn_val
,
52 self.error_format
)*]);
54 let mut hasher
= DefaultHasher
::new();
55 dep_tracking
::stable_hash(sub_hashes
,
64 // The top-level command-line options struct.
66 // For each option, one has to specify how it behaves with regard to the
67 // dependency tracking system of incremental compilation. This is done via the
68 // square-bracketed directive after the field type. The options are:
71 // A change in the given field will cause the compiler to completely clear the
72 // incremental compilation cache before proceeding.
75 // Incremental compilation is not influenced by this option.
77 // If you add a new option to this struct or one of the sub-structs like
78 // `CodegenOptions`, think about how it influences incremental compilation. If in
79 // doubt, specify [TRACKED], which is always "correct" but might lead to
80 // unnecessary re-compilation.
83 // The crate config requested for the session, which may be combined
84 // with additional crate configurations during the compile process.
85 crate_types
: Vec
<CrateType
> [TRACKED
],
86 optimize
: OptLevel
[TRACKED
],
87 // Include the `debug_assertions` flag in dependency tracking, since it
88 // can influence whether overflow checks are done or not.
89 debug_assertions
: bool
[TRACKED
],
90 debuginfo
: DebugInfo
[TRACKED
],
91 lint_opts
: Vec
<(String
, lint
::Level
)> [TRACKED
],
92 lint_cap
: Option
<lint
::Level
> [TRACKED
],
93 describe_lints
: bool
[UNTRACKED
],
94 output_types
: OutputTypes
[TRACKED
],
95 search_paths
: Vec
<SearchPath
> [UNTRACKED
],
96 libs
: Vec
<(String
, Option
<String
>, NativeLibKind
)> [TRACKED
],
97 maybe_sysroot
: Option
<PathBuf
> [UNTRACKED
],
99 target_triple
: TargetTriple
[TRACKED
],
101 test
: bool
[TRACKED
],
102 error_format
: ErrorOutputType
[UNTRACKED
],
104 // If `Some`, enable incremental compilation, using the given
105 // directory to store intermediate results.
106 incremental
: Option
<PathBuf
> [UNTRACKED
],
108 debugging_opts
: DebuggingOptions
[TRACKED
],
109 prints
: Vec
<PrintRequest
> [UNTRACKED
],
110 // Determines which borrow checker(s) to run. This is the parsed, sanitized
111 // version of `debugging_opts.borrowck`, which is just a plain string.
112 borrowck_mode
: BorrowckMode
[UNTRACKED
],
113 cg
: CodegenOptions
[TRACKED
],
114 externs
: Externs
[UNTRACKED
],
115 crate_name
: Option
<String
> [TRACKED
],
116 // An optional name to use as the crate for std during std injection,
117 // written `extern crate name as std`. Defaults to `std`. Used by
118 // out-of-tree drivers.
119 alt_std_name
: Option
<String
> [TRACKED
],
120 // Indicates how the compiler should treat unstable features.
121 unstable_features
: UnstableFeatures
[TRACKED
],
123 // Indicates whether this run of the compiler is actually rustdoc. This
124 // is currently just a hack and will be removed eventually, so please
125 // try to not rely on this too much.
126 actually_rustdoc
: bool
[TRACKED
],
128 // Control path trimming.
129 trimmed_def_paths
: TrimmedDefPaths
[TRACKED
],
131 // Specifications of codegen units / ThinLTO which are forced as a
132 // result of parsing command line options. These are not necessarily
133 // what rustc was invoked with, but massaged a bit to agree with
134 // commands like `--emit llvm-ir` which they're often incompatible with
135 // if we otherwise use the defaults of rustc.
136 cli_forced_codegen_units
: Option
<usize> [UNTRACKED
],
137 cli_forced_thinlto_off
: bool
[UNTRACKED
],
139 // Remap source path prefixes in all output (messages, object files, debug, etc.).
140 remap_path_prefix
: Vec
<(PathBuf
, PathBuf
)> [UNTRACKED
],
142 edition
: Edition
[TRACKED
],
144 // `true` if we're emitting JSON blobs about each artifact produced
146 json_artifact_notifications
: bool
[TRACKED
],
148 pretty
: Option
<PpMode
> [UNTRACKED
],
152 /// Defines all `CodegenOptions`/`DebuggingOptions` fields and parsers all at once. The goal of this
153 /// macro is to define an interface that can be programmatically used by the option parser
154 /// to initialize the struct without hardcoding field names all over the place.
156 /// The goal is to invoke this macro once with the correct fields, and then this macro generates all
157 /// necessary code. The main gotcha of this macro is the `cgsetters` module which is a bunch of
158 /// generated code to parse an option into its respective field in the struct. There are a few
159 /// hand-written parsers for parsing specific types of values in this module.
160 macro_rules
! options
{
161 ($struct_name
:ident
, $setter_name
:ident
, $defaultfn
:ident
,
162 $buildfn
:ident
, $prefix
:expr
, $outputname
:expr
,
163 $stat
:ident
, $mod_desc
:ident
, $mod_set
:ident
,
164 $
($opt
:ident
: $t
:ty
= (
167 [$dep_tracking_marker
:ident $
(($dep_warn_val
:expr
, $dep_warn_text
:expr
))*],
172 pub struct $struct_name { $(pub $opt: $t),* }
174 pub fn $
defaultfn() -> $struct_name
{
175 $struct_name { $($opt: $init),* }
178 pub fn $
buildfn(matches
: &getopts
::Matches
, error_format
: ErrorOutputType
) -> $struct_name
180 let mut op
= $
defaultfn();
181 for option
in matches
.opt_strs($prefix
) {
182 let (key
, value
) = match option
.split_once('
='
) {
183 None
=> (option
, None
),
184 Some((k
, v
)) => (k
.to_string(), Some(v
)),
186 let option_to_lookup
= key
.replace("-", "_");
187 let mut found
= false;
188 for &(candidate
, setter
, type_desc
, _
) in $stat
{
189 if option_to_lookup
!= candidate { continue }
190 if !setter(&mut op
, value
) {
193 early_error(error_format
, &format
!("{0} option `{1}` requires \
194 {2} ({3} {1}=<value>)",
199 early_error(error_format
, &format
!("incorrect value `{}` for {} \
200 option `{}` - {} was expected",
210 early_error(error_format
, &format
!("unknown {} option: `{}`",
217 impl dep_tracking
::DepTrackingHash
for $struct_name
{
218 fn hash(&self, hasher
: &mut DefaultHasher
, error_format
: ErrorOutputType
) {
219 let mut sub_hashes
= BTreeMap
::new();
224 [$dep_tracking_marker $
($dep_warn_val
,
228 dep_tracking
::stable_hash(sub_hashes
, hasher
, error_format
);
232 pub type $setter_name
= fn(&mut $struct_name
, v
: Option
<&str>) -> bool
;
233 pub const $stat
: &[(&str, $setter_name
, &str, &str)] =
234 &[ $
( (stringify
!($opt
), $mod_set
::$opt
, $mod_desc
::$parse
, $desc
) ),* ];
236 #[allow(non_upper_case_globals, dead_code)]
238 pub const parse_no_flag
: &str = "no value";
239 pub const parse_bool
: &str = "one of: `y`, `yes`, `on`, `n`, `no`, or `off`";
240 pub const parse_opt_bool
: &str = parse_bool
;
241 pub const parse_string
: &str = "a string";
242 pub const parse_opt_string
: &str = parse_string
;
243 pub const parse_string_push
: &str = parse_string
;
244 pub const parse_opt_pathbuf
: &str = "a path";
245 pub const parse_pathbuf_push
: &str = parse_opt_pathbuf
;
246 pub const parse_list
: &str = "a space-separated list of strings";
247 pub const parse_opt_list
: &str = parse_list
;
248 pub const parse_opt_comma_list
: &str = "a comma-separated list of strings";
249 pub const parse_uint
: &str = "a number";
250 pub const parse_opt_uint
: &str = parse_uint
;
251 pub const parse_threads
: &str = parse_uint
;
252 pub const parse_passes
: &str = "a space-separated list of passes, or `all`";
253 pub const parse_panic_strategy
: &str = "either `unwind` or `abort`";
254 pub const parse_relro_level
: &str = "one of: `full`, `partial`, or `off`";
255 pub const parse_sanitizers
: &str = "comma separated list of sanitizers: `address`, `leak`, `memory` or `thread`";
256 pub const parse_sanitizer_memory_track_origins
: &str = "0, 1, or 2";
257 pub const parse_cfguard
: &str =
258 "either a boolean (`yes`, `no`, `on`, `off`, etc), `checks`, or `nochecks`";
259 pub const parse_strip
: &str = "either `none`, `debuginfo`, or `symbols`";
260 pub const parse_linker_flavor
: &str = ::rustc_target
::spec
::LinkerFlavor
::one_of();
261 pub const parse_optimization_fuel
: &str = "crate=integer";
262 pub const parse_mir_spanview
: &str = "`statement` (default), `terminator`, or `block`";
263 pub const parse_unpretty
: &str = "`string` or `string=string`";
264 pub const parse_treat_err_as_bug
: &str = "either no value or a number bigger than 0";
265 pub const parse_lto
: &str =
266 "either a boolean (`yes`, `no`, `on`, `off`, etc), `thin`, `fat`, or omitted";
267 pub const parse_linker_plugin_lto
: &str =
268 "either a boolean (`yes`, `no`, `on`, `off`, etc), or the path to the linker plugin";
269 pub const parse_switch_with_opt_path
: &str =
270 "an optional path to the profiling data output directory";
271 pub const parse_merge_functions
: &str = "one of: `disabled`, `trampolines`, or `aliases`";
272 pub const parse_symbol_mangling_version
: &str = "either `legacy` or `v0` (RFC 2603)";
273 pub const parse_src_file_hash
: &str = "either `md5` or `sha1`";
274 pub const parse_relocation_model
: &str =
275 "one of supported relocation models (`rustc --print relocation-models`)";
276 pub const parse_code_model
: &str =
277 "one of supported code models (`rustc --print code-models`)";
278 pub const parse_tls_model
: &str =
279 "one of supported TLS models (`rustc --print tls-models`)";
280 pub const parse_target_feature
: &str = parse_string
;
281 pub const parse_wasi_exec_model
: &str = "either `command` or `reactor`";
282 pub const parse_split_debuginfo
: &str =
283 "one of supported split-debuginfo modes (`off` or `dsymutil`)";
289 use std
::str::FromStr
;
291 // Sometimes different options need to build a common structure.
292 // That structure can kept in one of the options' fields, the others become dummy.
293 macro_rules
! redirect_field
{
294 ($cg
:ident
.link_arg
) => { $cg.link_args }
;
295 ($cg
:ident
.pre_link_arg
) => { $cg.pre_link_args }
;
296 ($cg
:ident
.$field
:ident
) => { $cg.$field }
;
300 pub fn $
opt(cg
: &mut $struct_name
, v
: Option
<&str>) -> bool
{
301 $
parse(&mut redirect_field
!(cg
.$opt
), v
)
305 /// This is for boolean options that don't take a value and start with
306 /// `no-`. This style of option is deprecated.
307 fn parse_no_flag(slot
: &mut bool
, v
: Option
<&str>) -> bool
{
309 None
=> { *slot = true; true }
314 /// Use this for any boolean option that has a static default.
315 fn parse_bool(slot
: &mut bool
, v
: Option
<&str>) -> bool
{
317 Some("y") | Some("yes") | Some("on") | None
=> { *slot = true; true }
318 Some("n") | Some("no") | Some("off") => { *slot = false; true }
323 /// Use this for any boolean option that lacks a static default. (The
324 /// actions taken when such an option is not specified will depend on
325 /// other factors, such as other options, or target options.)
326 fn parse_opt_bool(slot
: &mut Option
<bool
>, v
: Option
<&str>) -> bool
{
328 Some("y") | Some("yes") | Some("on") | None
=> { *slot = Some(true); true }
329 Some("n") | Some("no") | Some("off") => { *slot = Some(false); true }
334 /// Use this for any string option that has a static default.
335 fn parse_string(slot
: &mut String
, v
: Option
<&str>) -> bool
{
337 Some(s
) => { *slot = s.to_string(); true }
,
342 /// Use this for any string option that lacks a static default.
343 fn parse_opt_string(slot
: &mut Option
<String
>, v
: Option
<&str>) -> bool
{
345 Some(s
) => { *slot = Some(s.to_string()); true }
,
350 fn parse_opt_pathbuf(slot
: &mut Option
<PathBuf
>, v
: Option
<&str>) -> bool
{
352 Some(s
) => { *slot = Some(PathBuf::from(s)); true }
,
357 fn parse_string_push(slot
: &mut Vec
<String
>, v
: Option
<&str>) -> bool
{
359 Some(s
) => { slot.push(s.to_string()); true }
,
364 fn parse_pathbuf_push(slot
: &mut Vec
<PathBuf
>, v
: Option
<&str>) -> bool
{
366 Some(s
) => { slot.push(PathBuf::from(s)); true }
,
371 fn parse_list(slot
: &mut Vec
<String
>, v
: Option
<&str>)
375 slot
.extend(s
.split_whitespace().map(|s
| s
.to_string()));
382 fn parse_opt_list(slot
: &mut Option
<Vec
<String
>>, v
: Option
<&str>)
386 let v
= s
.split_whitespace().map(|s
| s
.to_string()).collect();
394 fn parse_opt_comma_list(slot
: &mut Option
<Vec
<String
>>, v
: Option
<&str>)
398 let v
= s
.split('
,'
).map(|s
| s
.to_string()).collect();
406 fn parse_threads(slot
: &mut usize, v
: Option
<&str>) -> bool
{
407 match v
.and_then(|s
| s
.parse().ok()) {
408 Some(0) => { *slot = ::num_cpus::get(); true }
,
409 Some(i
) => { *slot = i; true }
,
414 /// Use this for any uint option that has a static default.
415 fn parse_uint(slot
: &mut usize, v
: Option
<&str>) -> bool
{
416 match v
.and_then(|s
| s
.parse().ok()) {
417 Some(i
) => { *slot = i; true }
,
422 /// Use this for any uint option that lacks a static default.
423 fn parse_opt_uint(slot
: &mut Option
<usize>, v
: Option
<&str>) -> bool
{
425 Some(s
) => { *slot = s.parse().ok(); slot.is_some() }
430 fn parse_passes(slot
: &mut Passes
, v
: Option
<&str>) -> bool
{
437 let mut passes
= vec
![];
438 if parse_list(&mut passes
, v
) {
439 *slot
= Passes
::Some(passes
);
448 fn parse_panic_strategy(slot
: &mut Option
<PanicStrategy
>, v
: Option
<&str>) -> bool
{
450 Some("unwind") => *slot
= Some(PanicStrategy
::Unwind
),
451 Some("abort") => *slot
= Some(PanicStrategy
::Abort
),
457 fn parse_relro_level(slot
: &mut Option
<RelroLevel
>, v
: Option
<&str>) -> bool
{
460 match s
.parse
::<RelroLevel
>() {
461 Ok(level
) => *slot
= Some(level
),
470 fn parse_sanitizers(slot
: &mut SanitizerSet
, v
: Option
<&str>) -> bool
{
472 for s
in v
.split('
,'
) {
474 "address" => SanitizerSet
::ADDRESS
,
475 "leak" => SanitizerSet
::LEAK
,
476 "memory" => SanitizerSet
::MEMORY
,
477 "thread" => SanitizerSet
::THREAD
,
487 fn parse_sanitizer_memory_track_origins(slot
: &mut usize, v
: Option
<&str>) -> bool
{
489 Some("2") | None
=> { *slot = 2; true }
490 Some("1") => { *slot = 1; true }
491 Some("0") => { *slot = 0; true }
496 fn parse_strip(slot
: &mut Strip
, v
: Option
<&str>) -> bool
{
498 Some("none") => *slot
= Strip
::None
,
499 Some("debuginfo") => *slot
= Strip
::Debuginfo
,
500 Some("symbols") => *slot
= Strip
::Symbols
,
506 fn parse_cfguard(slot
: &mut CFGuard
, v
: Option
<&str>) -> bool
{
508 let mut bool_arg
= None
;
509 if parse_opt_bool(&mut bool_arg
, v
) {
510 *slot
= if bool_arg
.unwrap() {
520 None
=> CFGuard
::Checks
,
521 Some("checks") => CFGuard
::Checks
,
522 Some("nochecks") => CFGuard
::NoChecks
,
523 Some(_
) => return false,
528 fn parse_linker_flavor(slote
: &mut Option
<LinkerFlavor
>, v
: Option
<&str>) -> bool
{
529 match v
.and_then(LinkerFlavor
::from_str
) {
530 Some(lf
) => *slote
= Some(lf
),
536 fn parse_optimization_fuel(slot
: &mut Option
<(String
, u64)>, v
: Option
<&str>) -> bool
{
540 let parts
= s
.split('
='
).collect
::<Vec
<_
>>();
541 if parts
.len() != 2 { return false; }
542 let crate_name
= parts
[0].to_string();
543 let fuel
= parts
[1].parse
::<u64>();
544 if fuel
.is_err() { return false; }
545 *slot
= Some((crate_name
, fuel
.unwrap()));
551 fn parse_unpretty(slot
: &mut Option
<String
>, v
: Option
<&str>) -> bool
{
554 Some(s
) if s
.split('
='
).count() <= 2 => {
555 *slot
= Some(s
.to_string());
562 fn parse_mir_spanview(slot
: &mut Option
<MirSpanview
>, v
: Option
<&str>) -> bool
{
564 let mut bool_arg
= None
;
565 if parse_opt_bool(&mut bool_arg
, v
) {
566 *slot
= if bool_arg
.unwrap() {
567 Some(MirSpanview
::Statement
)
577 *slot
= Some(MirSpanview
::Statement
);
583 *slot
= Some(match v
.trim_end_matches("s") {
584 "statement" | "stmt" => MirSpanview
::Statement
,
585 "terminator" | "term" => MirSpanview
::Terminator
,
586 "block" | "basicblock" => MirSpanview
::Block
,
592 fn parse_treat_err_as_bug(slot
: &mut Option
<usize>, v
: Option
<&str>) -> bool
{
594 Some(s
) => { *slot = s.parse().ok().filter(|&x| x != 0); slot.unwrap_or(0) != 0 }
595 None
=> { *slot = Some(1); true }
599 fn parse_lto(slot
: &mut LtoCli
, v
: Option
<&str>) -> bool
{
601 let mut bool_arg
= None
;
602 if parse_opt_bool(&mut bool_arg
, v
) {
603 *slot
= if bool_arg
.unwrap() {
613 None
=> LtoCli
::NoParam
,
614 Some("thin") => LtoCli
::Thin
,
615 Some("fat") => LtoCli
::Fat
,
616 Some(_
) => return false,
621 fn parse_linker_plugin_lto(slot
: &mut LinkerPluginLto
, v
: Option
<&str>) -> bool
{
623 let mut bool_arg
= None
;
624 if parse_opt_bool(&mut bool_arg
, v
) {
625 *slot
= if bool_arg
.unwrap() {
626 LinkerPluginLto
::LinkerPluginAuto
628 LinkerPluginLto
::Disabled
635 None
=> LinkerPluginLto
::LinkerPluginAuto
,
636 Some(path
) => LinkerPluginLto
::LinkerPlugin(PathBuf
::from(path
)),
641 fn parse_switch_with_opt_path(slot
: &mut SwitchWithOptPath
, v
: Option
<&str>) -> bool
{
643 None
=> SwitchWithOptPath
::Enabled(None
),
644 Some(path
) => SwitchWithOptPath
::Enabled(Some(PathBuf
::from(path
))),
649 fn parse_merge_functions(slot
: &mut Option
<MergeFunctions
>, v
: Option
<&str>) -> bool
{
650 match v
.and_then(|s
| MergeFunctions
::from_str(s
).ok()) {
651 Some(mergefunc
) => *slot
= Some(mergefunc
),
657 fn parse_relocation_model(slot
: &mut Option
<RelocModel
>, v
: Option
<&str>) -> bool
{
658 match v
.and_then(|s
| RelocModel
::from_str(s
).ok()) {
659 Some(relocation_model
) => *slot
= Some(relocation_model
),
660 None
if v
== Some("default") => *slot
= None
,
666 fn parse_code_model(slot
: &mut Option
<CodeModel
>, v
: Option
<&str>) -> bool
{
667 match v
.and_then(|s
| CodeModel
::from_str(s
).ok()) {
668 Some(code_model
) => *slot
= Some(code_model
),
674 fn parse_tls_model(slot
: &mut Option
<TlsModel
>, v
: Option
<&str>) -> bool
{
675 match v
.and_then(|s
| TlsModel
::from_str(s
).ok()) {
676 Some(tls_model
) => *slot
= Some(tls_model
),
682 fn parse_symbol_mangling_version(
683 slot
: &mut Option
<SymbolManglingVersion
>,
687 Some("legacy") => Some(SymbolManglingVersion
::Legacy
),
688 Some("v0") => Some(SymbolManglingVersion
::V0
),
694 fn parse_src_file_hash(slot
: &mut Option
<SourceFileHashAlgorithm
>, v
: Option
<&str>) -> bool
{
695 match v
.and_then(|s
| SourceFileHashAlgorithm
::from_str(s
).ok()) {
696 Some(hash_kind
) => *slot
= Some(hash_kind
),
702 fn parse_target_feature(slot
: &mut String
, v
: Option
<&str>) -> bool
{
705 if !slot
.is_empty() {
715 fn parse_wasi_exec_model(slot
: &mut Option
<WasiExecModel
>, v
: Option
<&str>) -> bool
{
717 Some("command") => *slot
= Some(WasiExecModel
::Command
),
718 Some("reactor") => *slot
= Some(WasiExecModel
::Reactor
),
724 fn parse_split_debuginfo(slot
: &mut Option
<SplitDebuginfo
>, v
: Option
<&str>) -> bool
{
725 match v
.and_then(|s
| SplitDebuginfo
::from_str(s
).ok()) {
726 Some(e
) => *slot
= Some(e
),
734 options
! {CodegenOptions
, CodegenSetter
, basic_codegen_options
,
735 build_codegen_options
, "C", "codegen",
736 CG_OPTIONS
, cg_type_desc
, cgsetters
,
738 // This list is in alphabetical order.
740 // If you add a new option, please update:
741 // - compiler/rustc_interface/src/tests.rs
742 // - src/doc/rustc/src/codegen-options/index.md
744 ar
: String
= (String
::new(), parse_string
, [UNTRACKED
],
745 "this option is deprecated and does nothing"),
746 code_model
: Option
<CodeModel
> = (None
, parse_code_model
, [TRACKED
],
747 "choose the code model to use (`rustc --print code-models` for details)"),
748 codegen_units
: Option
<usize> = (None
, parse_opt_uint
, [UNTRACKED
],
749 "divide crate into N units to optimize in parallel"),
750 control_flow_guard
: CFGuard
= (CFGuard
::Disabled
, parse_cfguard
, [TRACKED
],
751 "use Windows Control Flow Guard (default: no)"),
752 debug_assertions
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
753 "explicitly enable the `cfg(debug_assertions)` directive"),
754 debuginfo
: usize = (0, parse_uint
, [TRACKED
],
755 "debug info emission level (0 = no debug info, 1 = line tables only, \
756 2 = full debug info with variable and type information; default: 0)"),
757 default_linker_libraries
: bool
= (false, parse_bool
, [UNTRACKED
],
758 "allow the linker to link its default libraries (default: no)"),
759 embed_bitcode
: bool
= (true, parse_bool
, [TRACKED
],
760 "emit bitcode in rlibs (default: yes)"),
761 extra_filename
: String
= (String
::new(), parse_string
, [UNTRACKED
],
762 "extra data to put in each output filename"),
763 force_frame_pointers
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
764 "force use of the frame pointers"),
765 force_unwind_tables
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
766 "force use of unwind tables"),
767 incremental
: Option
<String
> = (None
, parse_opt_string
, [UNTRACKED
],
768 "enable incremental compilation"),
769 inline_threshold
: Option
<usize> = (None
, parse_opt_uint
, [TRACKED
],
770 "set the threshold for inlining a function"),
771 link_arg
: (/* redirected to link_args */) = ((), parse_string_push
, [UNTRACKED
],
772 "a single extra argument to append to the linker invocation (can be used several times)"),
773 link_args
: Vec
<String
> = (Vec
::new(), parse_list
, [UNTRACKED
],
774 "extra arguments to append to the linker invocation (space separated)"),
775 link_dead_code
: Option
<bool
> = (None
, parse_opt_bool
, [UNTRACKED
],
776 "keep dead code at link time (useful for code coverage) (default: no)"),
777 link_self_contained
: Option
<bool
> = (None
, parse_opt_bool
, [UNTRACKED
],
778 "control whether to link Rust provided C objects/libraries or rely
779 on C toolchain installed in the system"),
780 linker
: Option
<PathBuf
> = (None
, parse_opt_pathbuf
, [UNTRACKED
],
781 "system linker to link outputs with"),
782 linker_flavor
: Option
<LinkerFlavor
> = (None
, parse_linker_flavor
, [UNTRACKED
],
784 linker_plugin_lto
: LinkerPluginLto
= (LinkerPluginLto
::Disabled
,
785 parse_linker_plugin_lto
, [TRACKED
],
786 "generate build artifacts that are compatible with linker-based LTO"),
787 llvm_args
: Vec
<String
> = (Vec
::new(), parse_list
, [TRACKED
],
788 "a list of arguments to pass to LLVM (space separated)"),
789 lto
: LtoCli
= (LtoCli
::Unspecified
, parse_lto
, [TRACKED
],
790 "perform LLVM link-time optimizations"),
791 metadata
: Vec
<String
> = (Vec
::new(), parse_list
, [TRACKED
],
792 "metadata to mangle symbol names with"),
793 no_prepopulate_passes
: bool
= (false, parse_no_flag
, [TRACKED
],
794 "give an empty list of passes to the pass manager"),
795 no_redzone
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
796 "disable the use of the redzone"),
797 no_stack_check
: bool
= (false, parse_no_flag
, [UNTRACKED
],
798 "this option is deprecated and does nothing"),
799 no_vectorize_loops
: bool
= (false, parse_no_flag
, [TRACKED
],
800 "disable loop vectorization optimization passes"),
801 no_vectorize_slp
: bool
= (false, parse_no_flag
, [TRACKED
],
802 "disable LLVM's SLP vectorization pass"),
803 opt_level
: String
= ("0".to_string(), parse_string
, [TRACKED
],
804 "optimization level (0-3, s, or z; default: 0)"),
805 overflow_checks
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
806 "use overflow checks for integer arithmetic"),
807 panic
: Option
<PanicStrategy
> = (None
, parse_panic_strategy
, [TRACKED
],
808 "panic strategy to compile crate with"),
809 passes
: Vec
<String
> = (Vec
::new(), parse_list
, [TRACKED
],
810 "a list of extra LLVM passes to run (space separated)"),
811 prefer_dynamic
: bool
= (false, parse_bool
, [TRACKED
],
812 "prefer dynamic linking to static linking (default: no)"),
813 profile_generate
: SwitchWithOptPath
= (SwitchWithOptPath
::Disabled
,
814 parse_switch_with_opt_path
, [TRACKED
],
815 "compile the program with profiling instrumentation"),
816 profile_use
: Option
<PathBuf
> = (None
, parse_opt_pathbuf
, [TRACKED
],
817 "use the given `.profdata` file for profile-guided optimization"),
818 relocation_model
: Option
<RelocModel
> = (None
, parse_relocation_model
, [TRACKED
],
819 "control generation of position-independent code (PIC) \
820 (`rustc --print relocation-models` for details)"),
821 remark
: Passes
= (Passes
::Some(Vec
::new()), parse_passes
, [UNTRACKED
],
822 "print remarks for these optimization passes (space separated, or \"all\")"),
823 rpath
: bool
= (false, parse_bool
, [UNTRACKED
],
824 "set rpath values in libs/exes (default: no)"),
825 save_temps
: bool
= (false, parse_bool
, [UNTRACKED
],
826 "save all temporary output files during compilation (default: no)"),
827 soft_float
: bool
= (false, parse_bool
, [TRACKED
],
828 "use soft float ABI (*eabihf targets only) (default: no)"),
829 split_debuginfo
: Option
<SplitDebuginfo
> = (None
, parse_split_debuginfo
, [TRACKED
],
830 "how to handle split-debuginfo, a platform-specific option"),
831 target_cpu
: Option
<String
> = (None
, parse_opt_string
, [TRACKED
],
832 "select target processor (`rustc --print target-cpus` for details)"),
833 target_feature
: String
= (String
::new(), parse_target_feature
, [TRACKED
],
834 "target specific attributes. (`rustc --print target-features` for details). \
835 This feature is unsafe."),
837 // This list is in alphabetical order.
839 // If you add a new option, please update:
840 // - compiler/rustc_interface/src/tests.rs
841 // - src/doc/rustc/src/codegen-options/index.md
844 options
! {DebuggingOptions
, DebuggingSetter
, basic_debugging_options
,
845 build_debugging_options
, "Z", "debugging",
846 DB_OPTIONS
, db_type_desc
, dbsetters
,
848 // This list is in alphabetical order.
850 // If you add a new option, please update:
851 // - compiler/rustc_interface/src/tests.rs
853 allow_features
: Option
<Vec
<String
>> = (None
, parse_opt_comma_list
, [TRACKED
],
854 "only allow the listed language features to be enabled in code (space separated)"),
855 always_encode_mir
: bool
= (false, parse_bool
, [TRACKED
],
856 "encode MIR of all functions into the crate metadata (default: no)"),
857 assume_incomplete_release
: bool
= (false, parse_bool
, [TRACKED
],
858 "make cfg(version) treat the current version as incomplete (default: no)"),
859 asm_comments
: bool
= (false, parse_bool
, [TRACKED
],
860 "generate comments into the assembly (may change behavior) (default: no)"),
861 ast_json
: bool
= (false, parse_bool
, [UNTRACKED
],
862 "print the AST as JSON and halt (default: no)"),
863 ast_json_noexpand
: bool
= (false, parse_bool
, [UNTRACKED
],
864 "print the pre-expansion AST as JSON and halt (default: no)"),
865 binary_dep_depinfo
: bool
= (false, parse_bool
, [TRACKED
],
866 "include artifacts (sysroot, crate dependencies) used during compilation in dep-info \
868 borrowck
: String
= ("migrate".to_string(), parse_string
, [UNTRACKED
],
869 "select which borrowck is used (`mir` or `migrate`) (default: `migrate`)"),
870 borrowck_stats
: bool
= (false, parse_bool
, [UNTRACKED
],
871 "gather borrowck statistics (default: no)"),
872 cgu_partitioning_strategy
: Option
<String
> = (None
, parse_opt_string
, [TRACKED
],
873 "the codegen unit partitioning strategy to use"),
874 chalk
: bool
= (false, parse_bool
, [TRACKED
],
875 "enable the experimental Chalk-based trait solving engine"),
876 codegen_backend
: Option
<String
> = (None
, parse_opt_string
, [TRACKED
],
877 "the backend to use"),
878 combine_cgu
: bool
= (false, parse_bool
, [TRACKED
],
879 "combine CGUs into a single one"),
880 crate_attr
: Vec
<String
> = (Vec
::new(), parse_string_push
, [TRACKED
],
881 "inject the given attribute in the crate"),
882 debug_macros
: bool
= (false, parse_bool
, [TRACKED
],
883 "emit line numbers debug info inside macros (default: no)"),
884 deduplicate_diagnostics
: bool
= (true, parse_bool
, [UNTRACKED
],
885 "deduplicate identical diagnostics (default: yes)"),
886 dep_info_omit_d_target
: bool
= (false, parse_bool
, [TRACKED
],
887 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
888 themselves (default: no)"),
889 dep_tasks
: bool
= (false, parse_bool
, [UNTRACKED
],
890 "print tasks that execute and the color their dep node gets (requires debug build) \
892 dont_buffer_diagnostics
: bool
= (false, parse_bool
, [UNTRACKED
],
893 "emit diagnostics rather than buffering (breaks NLL error downgrading, sorting) \
895 dual_proc_macros
: bool
= (false, parse_bool
, [TRACKED
],
896 "load proc macros for both target and host, but only link to the target (default: no)"),
897 dump_dep_graph
: bool
= (false, parse_bool
, [UNTRACKED
],
898 "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv) \
900 dump_mir
: Option
<String
> = (None
, parse_opt_string
, [UNTRACKED
],
901 "dump MIR state to file.
902 `val` is used to select which passes and functions to dump. For example:
903 `all` matches all passes and functions,
904 `foo` matches all passes for functions whose name contains 'foo',
905 `foo & ConstProp` only the 'ConstProp' pass for function names containing 'foo',
906 `foo | bar` all passes for function names containing 'foo' or 'bar'."),
907 dump_mir_dataflow
: bool
= (false, parse_bool
, [UNTRACKED
],
908 "in addition to `.mir` files, create graphviz `.dot` files with dataflow results \
910 dump_mir_dir
: String
= ("mir_dump".to_string(), parse_string
, [UNTRACKED
],
911 "the directory the MIR is dumped into (default: `mir_dump`)"),
912 dump_mir_exclude_pass_number
: bool
= (false, parse_bool
, [UNTRACKED
],
913 "exclude the pass number when dumping MIR (used in tests) (default: no)"),
914 dump_mir_graphviz
: bool
= (false, parse_bool
, [UNTRACKED
],
915 "in addition to `.mir` files, create graphviz `.dot` files (and with \
916 `-Z instrument-coverage`, also create a `.dot` file for the MIR-derived \
917 coverage graph) (default: no)"),
918 dump_mir_spanview
: Option
<MirSpanview
> = (None
, parse_mir_spanview
, [UNTRACKED
],
919 "in addition to `.mir` files, create `.html` files to view spans for \
920 all `statement`s (including terminators), only `terminator` spans, or \
921 computed `block` spans (one span encompassing a block's terminator and \
922 all statements). If `-Z instrument-coverage` is also enabled, create \
923 an additional `.html` file showing the computed coverage spans."),
924 emit_future_incompat_report
: bool
= (false, parse_bool
, [UNTRACKED
],
925 "emits a future-incompatibility report for lints (RFC 2834)"),
926 emit_stack_sizes
: bool
= (false, parse_bool
, [UNTRACKED
],
927 "emit a section containing stack size metadata (default: no)"),
928 fewer_names
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
929 "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR) \
931 force_overflow_checks
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
932 "force overflow checks on or off"),
933 force_unstable_if_unmarked
: bool
= (false, parse_bool
, [TRACKED
],
934 "force all crates to be `rustc_private` unstable (default: no)"),
935 fuel
: Option
<(String
, u64)> = (None
, parse_optimization_fuel
, [TRACKED
],
936 "set the optimization fuel quota for a crate"),
937 function_sections
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
938 "whether each function should go in its own section"),
939 graphviz_dark_mode
: bool
= (false, parse_bool
, [UNTRACKED
],
940 "use dark-themed colors in graphviz output (default: no)"),
941 graphviz_font
: String
= ("Courier, monospace".to_string(), parse_string
, [UNTRACKED
],
942 "use the given `fontname` in graphviz output; can be overridden by setting \
943 environment variable `RUSTC_GRAPHVIZ_FONT` (default: `Courier, monospace`)"),
944 hir_stats
: bool
= (false, parse_bool
, [UNTRACKED
],
945 "print some statistics about AST and HIR (default: no)"),
946 human_readable_cgu_names
: bool
= (false, parse_bool
, [TRACKED
],
947 "generate human-readable, predictable names for codegen units (default: no)"),
948 identify_regions
: bool
= (false, parse_bool
, [UNTRACKED
],
949 "display unnamed regions as `'<id>`, using a non-ident unique id (default: no)"),
950 incremental_ignore_spans
: bool
= (false, parse_bool
, [UNTRACKED
],
951 "ignore spans during ICH computation -- used for testing (default: no)"),
952 incremental_info
: bool
= (false, parse_bool
, [UNTRACKED
],
953 "print high-level information about incremental reuse (or the lack thereof) \
955 incremental_verify_ich
: bool
= (false, parse_bool
, [UNTRACKED
],
956 "verify incr. comp. hashes of green query instances (default: no)"),
957 inline_mir_threshold
: usize = (50, parse_uint
, [TRACKED
],
958 "a default MIR inlining threshold (default: 50)"),
959 inline_mir_hint_threshold
: usize = (100, parse_uint
, [TRACKED
],
960 "inlining threshold for functions with inline hint (default: 100)"),
961 inline_in_all_cgus
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
962 "control whether `#[inline]` functions are in all CGUs"),
963 input_stats
: bool
= (false, parse_bool
, [UNTRACKED
],
964 "gather statistics about the input (default: no)"),
965 insert_sideeffect
: bool
= (false, parse_bool
, [TRACKED
],
966 "fix undefined behavior when a thread doesn't eventually make progress \
967 (such as entering an empty infinite loop) by inserting llvm.sideeffect \
969 instrument_coverage
: bool
= (false, parse_bool
, [TRACKED
],
970 "instrument the generated code to support LLVM source-based code coverage \
971 reports (note, the compiler build config must include `profiler = true`, \
972 and is mutually exclusive with `-C profile-generate`/`-C profile-use`); \
973 implies `-Z symbol-mangling-version=v0`; disables/overrides some Rust \
974 optimizations (default: no)"),
975 instrument_mcount
: bool
= (false, parse_bool
, [TRACKED
],
976 "insert function instrument code for mcount-based tracing (default: no)"),
977 keep_hygiene_data
: bool
= (false, parse_bool
, [UNTRACKED
],
978 "keep hygiene data after analysis (default: no)"),
979 link_native_libraries
: bool
= (true, parse_bool
, [UNTRACKED
],
980 "link native libraries in the linker invocation (default: yes)"),
981 link_only
: bool
= (false, parse_bool
, [TRACKED
],
982 "link the `.rlink` file generated by `-Z no-link` (default: no)"),
983 llvm_time_trace
: bool
= (false, parse_bool
, [UNTRACKED
],
984 "generate JSON tracing data file from LLVM data (default: no)"),
985 ls
: bool
= (false, parse_bool
, [UNTRACKED
],
986 "list the symbols defined by a library crate (default: no)"),
987 macro_backtrace
: bool
= (false, parse_bool
, [UNTRACKED
],
988 "show macro backtraces (default: no)"),
989 merge_functions
: Option
<MergeFunctions
> = (None
, parse_merge_functions
, [TRACKED
],
990 "control the operation of the MergeFunctions LLVM pass, taking \
991 the same values as the target option of the same name"),
992 meta_stats
: bool
= (false, parse_bool
, [UNTRACKED
],
993 "gather metadata statistics (default: no)"),
994 mir_emit_retag
: bool
= (false, parse_bool
, [TRACKED
],
995 "emit Retagging MIR statements, interpreted e.g., by miri; implies -Zmir-opt-level=0 \
997 mir_opt_level
: usize = (1, parse_uint
, [TRACKED
],
998 "MIR optimization level (0-3; default: 1)"),
999 mutable_noalias
: bool
= (false, parse_bool
, [TRACKED
],
1000 "emit noalias metadata for mutable references (default: no)"),
1001 new_llvm_pass_manager
: bool
= (false, parse_bool
, [TRACKED
],
1002 "use new LLVM pass manager (default: no)"),
1003 nll_facts
: bool
= (false, parse_bool
, [UNTRACKED
],
1004 "dump facts from NLL analysis into side files (default: no)"),
1005 nll_facts_dir
: String
= ("nll-facts".to_string(), parse_string
, [UNTRACKED
],
1006 "the directory the NLL facts are dumped into (default: `nll-facts`)"),
1007 no_analysis
: bool
= (false, parse_no_flag
, [UNTRACKED
],
1008 "parse and expand the source, but run no analysis"),
1009 no_codegen
: bool
= (false, parse_no_flag
, [TRACKED
],
1010 "run all passes except codegen; no output"),
1011 no_generate_arange_section
: bool
= (false, parse_no_flag
, [TRACKED
],
1012 "omit DWARF address ranges that give faster lookups"),
1013 no_interleave_lints
: bool
= (false, parse_no_flag
, [UNTRACKED
],
1014 "execute lints separately; allows benchmarking individual lints"),
1015 no_leak_check
: bool
= (false, parse_no_flag
, [UNTRACKED
],
1016 "disable the 'leak check' for subtyping; unsound, but useful for tests"),
1017 no_link
: bool
= (false, parse_no_flag
, [TRACKED
],
1018 "compile without linking"),
1019 no_parallel_llvm
: bool
= (false, parse_no_flag
, [UNTRACKED
],
1020 "run LLVM in non-parallel mode (while keeping codegen-units and ThinLTO)"),
1021 no_profiler_runtime
: bool
= (false, parse_no_flag
, [TRACKED
],
1022 "prevent automatic injection of the profiler_builtins crate"),
1023 normalize_docs
: bool
= (false, parse_bool
, [TRACKED
],
1024 "normalize associated items in rustdoc when generating documentation"),
1025 osx_rpath_install_name
: bool
= (false, parse_bool
, [TRACKED
],
1026 "pass `-install_name @rpath/...` to the macOS linker (default: no)"),
1027 panic_abort_tests
: bool
= (false, parse_bool
, [TRACKED
],
1028 "support compiling tests with panic=abort (default: no)"),
1029 parse_only
: bool
= (false, parse_bool
, [UNTRACKED
],
1030 "parse only; do not compile, assemble, or link (default: no)"),
1031 perf_stats
: bool
= (false, parse_bool
, [UNTRACKED
],
1032 "print some performance-related statistics (default: no)"),
1033 plt
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
1034 "whether to use the PLT when calling into shared libraries;
1035 only has effect for PIC code on systems with ELF binaries
1036 (default: PLT is disabled if full relro is enabled)"),
1037 polonius
: bool
= (false, parse_bool
, [TRACKED
],
1038 "enable polonius-based borrow-checker (default: no)"),
1039 polymorphize
: bool
= (false, parse_bool
, [TRACKED
],
1040 "perform polymorphization analysis"),
1041 pre_link_arg
: (/* redirected to pre_link_args */) = ((), parse_string_push
, [UNTRACKED
],
1042 "a single extra argument to prepend the linker invocation (can be used several times)"),
1043 pre_link_args
: Vec
<String
> = (Vec
::new(), parse_list
, [UNTRACKED
],
1044 "extra arguments to prepend to the linker invocation (space separated)"),
1045 precise_enum_drop_elaboration
: bool
= (true, parse_bool
, [TRACKED
],
1046 "use a more precise version of drop elaboration for matches on enums (default: yes). \
1047 This results in better codegen, but has caused miscompilations on some tier 2 platforms. \
1048 See #77382 and #74551."),
1049 print_fuel
: Option
<String
> = (None
, parse_opt_string
, [TRACKED
],
1050 "make rustc print the total optimization fuel used by a crate"),
1051 print_link_args
: bool
= (false, parse_bool
, [UNTRACKED
],
1052 "print the arguments passed to the linker (default: no)"),
1053 print_llvm_passes
: bool
= (false, parse_bool
, [UNTRACKED
],
1054 "print the LLVM optimization passes being run (default: no)"),
1055 print_mono_items
: Option
<String
> = (None
, parse_opt_string
, [UNTRACKED
],
1056 "print the result of the monomorphization collection pass"),
1057 print_type_sizes
: bool
= (false, parse_bool
, [UNTRACKED
],
1058 "print layout information for each type encountered (default: no)"),
1059 proc_macro_backtrace
: bool
= (false, parse_bool
, [UNTRACKED
],
1060 "show backtraces for panics during proc-macro execution (default: no)"),
1061 profile
: bool
= (false, parse_bool
, [TRACKED
],
1062 "insert profiling code (default: no)"),
1063 profile_emit
: Option
<PathBuf
> = (None
, parse_opt_pathbuf
, [TRACKED
],
1064 "file path to emit profiling data at runtime when using 'profile' \
1065 (default based on relative source path)"),
1066 query_dep_graph
: bool
= (false, parse_bool
, [UNTRACKED
],
1067 "enable queries of the dependency graph for regression testing (default: no)"),
1068 query_stats
: bool
= (false, parse_bool
, [UNTRACKED
],
1069 "print some statistics about the query system (default: no)"),
1070 relax_elf_relocations
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
1071 "whether ELF relocations can be relaxed"),
1072 relro_level
: Option
<RelroLevel
> = (None
, parse_relro_level
, [TRACKED
],
1073 "choose which RELRO level to use"),
1074 report_delayed_bugs
: bool
= (false, parse_bool
, [TRACKED
],
1075 "immediately print bugs registered with `delay_span_bug` (default: no)"),
1076 sanitizer
: SanitizerSet
= (SanitizerSet
::empty(), parse_sanitizers
, [TRACKED
],
1078 sanitizer_memory_track_origins
: usize = (0, parse_sanitizer_memory_track_origins
, [TRACKED
],
1079 "enable origins tracking in MemorySanitizer"),
1080 sanitizer_recover
: SanitizerSet
= (SanitizerSet
::empty(), parse_sanitizers
, [TRACKED
],
1081 "enable recovery for selected sanitizers"),
1082 saturating_float_casts
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
1083 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1084 the max/min integer respectively, and NaN is mapped to 0 (default: yes)"),
1085 save_analysis
: bool
= (false, parse_bool
, [UNTRACKED
],
1086 "write syntax and type analysis (in JSON format) information, in \
1087 addition to normal output (default: no)"),
1088 self_profile
: SwitchWithOptPath
= (SwitchWithOptPath
::Disabled
,
1089 parse_switch_with_opt_path
, [UNTRACKED
],
1090 "run the self profiler and output the raw event data"),
1091 // keep this in sync with the event filter names in librustc_data_structures/profiling.rs
1092 self_profile_events
: Option
<Vec
<String
>> = (None
, parse_opt_comma_list
, [UNTRACKED
],
1093 "specify the events recorded by the self profiler;
1094 for example: `-Z self-profile-events=default,query-keys`
1095 all options: none, all, default, generic-activity, query-provider, query-cache-hit
1096 query-blocked, incr-cache-load, query-keys, function-args, args, llvm"),
1097 share_generics
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
1098 "make the current crate share its generic instantiations"),
1099 show_span
: Option
<String
> = (None
, parse_opt_string
, [TRACKED
],
1100 "show spans for compiler debugging (expr|pat|ty)"),
1101 span_debug
: bool
= (false, parse_bool
, [UNTRACKED
],
1102 "forward proc_macro::Span's `Debug` impl to `Span`"),
1103 // o/w tests have closure@path
1104 span_free_formats
: bool
= (false, parse_bool
, [UNTRACKED
],
1105 "exclude spans when debug-printing compiler state (default: no)"),
1106 src_hash_algorithm
: Option
<SourceFileHashAlgorithm
> = (None
, parse_src_file_hash
, [TRACKED
],
1107 "hash algorithm of source files in debug info (`md5`, `sha1`, or `sha256`)"),
1108 strip
: Strip
= (Strip
::None
, parse_strip
, [UNTRACKED
],
1109 "tell the linker which information to strip (`none` (default), `debuginfo` or `symbols`)"),
1110 split_dwarf_inlining
: bool
= (true, parse_bool
, [UNTRACKED
],
1111 "provide minimal debug info in the object/executable to facilitate online \
1112 symbolication/stack traces in the absence of .dwo/.dwp files when using Split DWARF"),
1113 symbol_mangling_version
: Option
<SymbolManglingVersion
> = (None
,
1114 parse_symbol_mangling_version
, [TRACKED
],
1115 "which mangling version to use for symbol names ('legacy' (default) or 'v0')"),
1116 teach
: bool
= (false, parse_bool
, [TRACKED
],
1117 "show extended diagnostic help (default: no)"),
1118 terminal_width
: Option
<usize> = (None
, parse_opt_uint
, [UNTRACKED
],
1119 "set the current terminal width"),
1120 tune_cpu
: Option
<String
> = (None
, parse_opt_string
, [TRACKED
],
1121 "select processor to schedule for (`rustc --print target-cpus` for details)"),
1122 thinlto
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
1123 "enable ThinLTO when possible"),
1124 // We default to 1 here since we want to behave like
1125 // a sequential compiler for now. This'll likely be adjusted
1126 // in the future. Note that -Zthreads=0 is the way to get
1127 // the num_cpus behavior.
1128 threads
: usize = (1, parse_threads
, [UNTRACKED
],
1129 "use a thread pool with N threads"),
1130 time
: bool
= (false, parse_bool
, [UNTRACKED
],
1131 "measure time of rustc processes (default: no)"),
1132 time_llvm_passes
: bool
= (false, parse_bool
, [UNTRACKED
],
1133 "measure time of each LLVM pass (default: no)"),
1134 time_passes
: bool
= (false, parse_bool
, [UNTRACKED
],
1135 "measure time of each rustc pass (default: no)"),
1136 tls_model
: Option
<TlsModel
> = (None
, parse_tls_model
, [TRACKED
],
1137 "choose the TLS model to use (`rustc --print tls-models` for details)"),
1138 trace_macros
: bool
= (false, parse_bool
, [UNTRACKED
],
1139 "for every macro invocation, print its name and arguments (default: no)"),
1140 trap_unreachable
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
1141 "generate trap instructions for unreachable intrinsics (default: use target setting, usually yes)"),
1142 treat_err_as_bug
: Option
<usize> = (None
, parse_treat_err_as_bug
, [TRACKED
],
1143 "treat error number `val` that occurs as bug"),
1144 trim_diagnostic_paths
: bool
= (true, parse_bool
, [UNTRACKED
],
1145 "in diagnostics, use heuristics to shorten paths referring to items"),
1146 ui_testing
: bool
= (false, parse_bool
, [UNTRACKED
],
1147 "emit compiler diagnostics in a form suitable for UI testing (default: no)"),
1148 unleash_the_miri_inside_of_you
: bool
= (false, parse_bool
, [TRACKED
],
1149 "take the brakes off const evaluation. NOTE: this is unsound (default: no)"),
1150 unpretty
: Option
<String
> = (None
, parse_unpretty
, [UNTRACKED
],
1151 "present the input source, unstable (and less-pretty) variants;
1152 valid types are any of the types for `--pretty`, as well as:
1153 `expanded`, `expanded,identified`,
1154 `expanded,hygiene` (with internal representations),
1155 `everybody_loops` (all function bodies replaced with `loop {}`),
1156 `hir` (the HIR), `hir,identified`,
1157 `hir,typed` (HIR with types for each node),
1158 `hir-tree` (dump the raw HIR),
1159 `mir` (the MIR), or `mir-cfg` (graphviz formatted MIR)"),
1160 unsound_mir_opts
: bool
= (false, parse_bool
, [TRACKED
],
1161 "enable unsound and buggy MIR optimizations (default: no)"),
1162 unstable_options
: bool
= (false, parse_bool
, [UNTRACKED
],
1163 "adds unstable command line options to rustc interface (default: no)"),
1164 use_ctors_section
: Option
<bool
> = (None
, parse_opt_bool
, [TRACKED
],
1165 "use legacy .ctors section for initializers rather than .init_array"),
1166 validate_mir
: bool
= (false, parse_bool
, [UNTRACKED
],
1167 "validate MIR after each transformation"),
1168 verbose
: bool
= (false, parse_bool
, [UNTRACKED
],
1169 "in general, enable more debug printouts (default: no)"),
1170 verify_llvm_ir
: bool
= (false, parse_bool
, [TRACKED
],
1171 "verify LLVM IR (default: no)"),
1172 wasi_exec_model
: Option
<WasiExecModel
> = (None
, parse_wasi_exec_model
, [TRACKED
],
1173 "whether to build a wasi command or reactor"),
1175 // This list is in alphabetical order.
1177 // If you add a new option, please update:
1178 // - compiler/rustc_interface/src/tests.rs
1181 #[derive(Clone, Hash)]
1182 pub enum WasiExecModel
{