use crate::config::*; use crate::early_error; use crate::lint; use crate::search_paths::SearchPath; use crate::utils::NativeLibraryKind; use rustc_target::spec::TargetTriple; use rustc_target::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, RelroLevel}; use rustc_feature::UnstableFeatures; use rustc_span::edition::Edition; use std::collections::BTreeMap; use std::collections::hash_map::DefaultHasher; use std::hash::Hasher; use std::path::PathBuf; use std::str; macro_rules! hash_option { ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [UNTRACKED]) => {{}}; ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [TRACKED]) => {{ if $sub_hashes .insert(stringify!($opt_name), $opt_expr as &dyn dep_tracking::DepTrackingHash) .is_some() { panic!("duplicate key in CLI DepTrackingHash: {}", stringify!($opt_name)) } }}; } macro_rules! top_level_options { (pub struct Options { $( $opt:ident : $t:ty [$dep_tracking_marker:ident $($warn_val:expr, $warn_text:expr)*], )* } ) => ( #[derive(Clone)] pub struct Options { $(pub $opt: $t),* } impl Options { pub fn dep_tracking_hash(&self) -> u64 { let mut sub_hashes = BTreeMap::new(); $({ hash_option!($opt, &self.$opt, &mut sub_hashes, [$dep_tracking_marker $($warn_val, $warn_text, self.error_format)*]); })* let mut hasher = DefaultHasher::new(); dep_tracking::stable_hash(sub_hashes, &mut hasher, self.error_format); hasher.finish() } } ); } // The top-level command-line options struct. // // For each option, one has to specify how it behaves with regard to the // dependency tracking system of incremental compilation. This is done via the // square-bracketed directive after the field type. The options are: // // [TRACKED] // A change in the given field will cause the compiler to completely clear the // incremental compilation cache before proceeding. // // [UNTRACKED] // Incremental compilation is not influenced by this option. // // If you add a new option to this struct or one of the sub-structs like // `CodegenOptions`, think about how it influences incremental compilation. If in // doubt, specify [TRACKED], which is always "correct" but might lead to // unnecessary re-compilation. top_level_options!( pub struct Options { // The crate config requested for the session, which may be combined // with additional crate configurations during the compile process. crate_types: Vec [TRACKED], optimize: OptLevel [TRACKED], // Include the `debug_assertions` flag in dependency tracking, since it // can influence whether overflow checks are done or not. debug_assertions: bool [TRACKED], debuginfo: DebugInfo [TRACKED], lint_opts: Vec<(String, lint::Level)> [TRACKED], lint_cap: Option [TRACKED], describe_lints: bool [UNTRACKED], output_types: OutputTypes [TRACKED], search_paths: Vec [UNTRACKED], libs: Vec<(String, Option, Option)> [TRACKED], maybe_sysroot: Option [UNTRACKED], target_triple: TargetTriple [TRACKED], test: bool [TRACKED], error_format: ErrorOutputType [UNTRACKED], // If `Some`, enable incremental compilation, using the given // directory to store intermediate results. incremental: Option [UNTRACKED], debugging_opts: DebuggingOptions [TRACKED], prints: Vec [UNTRACKED], // Determines which borrow checker(s) to run. This is the parsed, sanitized // version of `debugging_opts.borrowck`, which is just a plain string. borrowck_mode: BorrowckMode [UNTRACKED], cg: CodegenOptions [TRACKED], externs: Externs [UNTRACKED], crate_name: Option [TRACKED], // An optional name to use as the crate for std during std injection, // written `extern crate name as std`. Defaults to `std`. Used by // out-of-tree drivers. alt_std_name: Option [TRACKED], // Indicates how the compiler should treat unstable features. unstable_features: UnstableFeatures [TRACKED], // Indicates whether this run of the compiler is actually rustdoc. This // is currently just a hack and will be removed eventually, so please // try to not rely on this too much. actually_rustdoc: bool [TRACKED], // Specifications of codegen units / ThinLTO which are forced as a // result of parsing command line options. These are not necessarily // what rustc was invoked with, but massaged a bit to agree with // commands like `--emit llvm-ir` which they're often incompatible with // if we otherwise use the defaults of rustc. cli_forced_codegen_units: Option [UNTRACKED], cli_forced_thinlto_off: bool [UNTRACKED], // Remap source path prefixes in all output (messages, object files, debug, etc.). remap_path_prefix: Vec<(PathBuf, PathBuf)> [UNTRACKED], edition: Edition [TRACKED], // `true` if we're emitting JSON blobs about each artifact produced // by the compiler. json_artifact_notifications: bool [TRACKED], pretty: Option [UNTRACKED], } ); /// Defines all `CodegenOptions`/`DebuggingOptions` fields and parsers all at once. The goal of this /// macro is to define an interface that can be programmatically used by the option parser /// to initialize the struct without hardcoding field names all over the place. /// /// The goal is to invoke this macro once with the correct fields, and then this macro generates all /// necessary code. The main gotcha of this macro is the `cgsetters` module which is a bunch of /// generated code to parse an option into its respective field in the struct. There are a few /// hand-written parsers for parsing specific types of values in this module. macro_rules! options { ($struct_name:ident, $setter_name:ident, $defaultfn:ident, $buildfn:ident, $prefix:expr, $outputname:expr, $stat:ident, $mod_desc:ident, $mod_set:ident, $($opt:ident : $t:ty = ( $init:expr, $parse:ident, [$dep_tracking_marker:ident $(($dep_warn_val:expr, $dep_warn_text:expr))*], $desc:expr) ),* ,) => ( #[derive(Clone)] pub struct $struct_name { $(pub $opt: $t),* } pub fn $defaultfn() -> $struct_name { $struct_name { $($opt: $init),* } } pub fn $buildfn(matches: &getopts::Matches, error_format: ErrorOutputType) -> $struct_name { let mut op = $defaultfn(); for option in matches.opt_strs($prefix) { let mut iter = option.splitn(2, '='); let key = iter.next().unwrap(); let value = iter.next(); let option_to_lookup = key.replace("-", "_"); let mut found = false; for &(candidate, setter, opt_type_desc, _) in $stat { if option_to_lookup != candidate { continue } if !setter(&mut op, value) { match (value, opt_type_desc) { (Some(..), None) => { early_error(error_format, &format!("{} option `{}` takes no \ value", $outputname, key)) } (None, Some(type_desc)) => { early_error(error_format, &format!("{0} option `{1}` requires \ {2} ({3} {1}=)", $outputname, key, type_desc, $prefix)) } (Some(value), Some(type_desc)) => { early_error(error_format, &format!("incorrect value `{}` for {} \ option `{}` - {} was expected", value, $outputname, key, type_desc)) } (None, None) => panic!() } } found = true; break; } if !found { early_error(error_format, &format!("unknown {} option: `{}`", $outputname, key)); } } return op; } impl dep_tracking::DepTrackingHash for $struct_name { fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) { let mut sub_hashes = BTreeMap::new(); $({ hash_option!($opt, &self.$opt, &mut sub_hashes, [$dep_tracking_marker $($dep_warn_val, $dep_warn_text, error_format)*]); })* dep_tracking::stable_hash(sub_hashes, hasher, error_format); } } pub type $setter_name = fn(&mut $struct_name, v: Option<&str>) -> bool; pub const $stat: &[(&str, $setter_name, Option<&str>, &str)] = &[ $( (stringify!($opt), $mod_set::$opt, $mod_desc::$parse, $desc) ),* ]; #[allow(non_upper_case_globals, dead_code)] mod $mod_desc { pub const parse_bool: Option<&str> = None; pub const parse_opt_bool: Option<&str> = Some("one of: `y`, `yes`, `on`, `n`, `no`, or `off`"); pub const parse_string: Option<&str> = Some("a string"); pub const parse_string_push: Option<&str> = Some("a string"); pub const parse_pathbuf_push: Option<&str> = Some("a path"); pub const parse_opt_string: Option<&str> = Some("a string"); pub const parse_opt_pathbuf: Option<&str> = Some("a path"); pub const parse_list: Option<&str> = Some("a space-separated list of strings"); pub const parse_opt_list: Option<&str> = Some("a space-separated list of strings"); pub const parse_opt_comma_list: Option<&str> = Some("a comma-separated list of strings"); pub const parse_threads: Option<&str> = Some("a number"); pub const parse_uint: Option<&str> = Some("a number"); pub const parse_passes: Option<&str> = Some("a space-separated list of passes, or `all`"); pub const parse_opt_uint: Option<&str> = Some("a number"); pub const parse_panic_strategy: Option<&str> = Some("either `unwind` or `abort`"); pub const parse_relro_level: Option<&str> = Some("one of: `full`, `partial`, or `off`"); pub const parse_sanitizer: Option<&str> = Some("one of: `address`, `leak`, `memory` or `thread`"); pub const parse_sanitizer_list: Option<&str> = Some("comma separated list of sanitizers"); pub const parse_sanitizer_memory_track_origins: Option<&str> = None; pub const parse_cfguard: Option<&str> = Some("either `disabled`, `nochecks`, or `checks`"); pub const parse_linker_flavor: Option<&str> = Some(::rustc_target::spec::LinkerFlavor::one_of()); pub const parse_optimization_fuel: Option<&str> = Some("crate=integer"); pub const parse_unpretty: Option<&str> = Some("`string` or `string=string`"); pub const parse_treat_err_as_bug: Option<&str> = Some("either no value or a number bigger than 0"); pub const parse_lto: Option<&str> = Some("either a boolean (`yes`, `no`, `on`, `off`, etc), `thin`, \ `fat`, or omitted"); pub const parse_linker_plugin_lto: Option<&str> = Some("either a boolean (`yes`, `no`, `on`, `off`, etc), \ or the path to the linker plugin"); pub const parse_switch_with_opt_path: Option<&str> = Some("an optional path to the profiling data output directory"); pub const parse_merge_functions: Option<&str> = Some("one of: `disabled`, `trampolines`, or `aliases`"); pub const parse_symbol_mangling_version: Option<&str> = Some("either `legacy` or `v0` (RFC 2603)"); } #[allow(dead_code)] mod $mod_set { use super::{$struct_name, Passes, Sanitizer, LtoCli, LinkerPluginLto, SwitchWithOptPath, SymbolManglingVersion, CFGuard}; use rustc_target::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, RelroLevel}; use std::path::PathBuf; use std::str::FromStr; $( pub fn $opt(cg: &mut $struct_name, v: Option<&str>) -> bool { $parse(&mut cg.$opt, v) } )* fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool { match v { Some(..) => false, None => { *slot = true; true } } } fn parse_opt_bool(slot: &mut Option, v: Option<&str>) -> bool { match v { Some(s) => { match s { "n" | "no" | "off" => { *slot = Some(false); } "y" | "yes" | "on" => { *slot = Some(true); } _ => { return false; } } true }, None => { *slot = Some(true); true } } } fn parse_opt_string(slot: &mut Option, v: Option<&str>) -> bool { match v { Some(s) => { *slot = Some(s.to_string()); true }, None => false, } } fn parse_opt_pathbuf(slot: &mut Option, v: Option<&str>) -> bool { match v { Some(s) => { *slot = Some(PathBuf::from(s)); true }, None => false, } } fn parse_string(slot: &mut String, v: Option<&str>) -> bool { match v { Some(s) => { *slot = s.to_string(); true }, None => false, } } fn parse_string_push(slot: &mut Vec, v: Option<&str>) -> bool { match v { Some(s) => { slot.push(s.to_string()); true }, None => false, } } fn parse_pathbuf_push(slot: &mut Vec, v: Option<&str>) -> bool { match v { Some(s) => { slot.push(PathBuf::from(s)); true }, None => false, } } fn parse_list(slot: &mut Vec, v: Option<&str>) -> bool { match v { Some(s) => { slot.extend(s.split_whitespace().map(|s| s.to_string())); true }, None => false, } } fn parse_opt_list(slot: &mut Option>, v: Option<&str>) -> bool { match v { Some(s) => { let v = s.split_whitespace().map(|s| s.to_string()).collect(); *slot = Some(v); true }, None => false, } } fn parse_opt_comma_list(slot: &mut Option>, v: Option<&str>) -> bool { match v { Some(s) => { let v = s.split(',').map(|s| s.to_string()).collect(); *slot = Some(v); true }, None => false, } } fn parse_threads(slot: &mut usize, v: Option<&str>) -> bool { match v.and_then(|s| s.parse().ok()) { Some(0) => { *slot = ::num_cpus::get(); true }, Some(i) => { *slot = i; true }, None => false } } fn parse_uint(slot: &mut usize, v: Option<&str>) -> bool { match v.and_then(|s| s.parse().ok()) { Some(i) => { *slot = i; true }, None => false } } fn parse_opt_uint(slot: &mut Option, v: Option<&str>) -> bool { match v { Some(s) => { *slot = s.parse().ok(); slot.is_some() } None => { *slot = None; false } } } fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool { match v { Some("all") => { *slot = Passes::All; true } v => { let mut passes = vec![]; if parse_list(&mut passes, v) { *slot = Passes::Some(passes); true } else { false } } } } fn parse_panic_strategy(slot: &mut Option, v: Option<&str>) -> bool { match v { Some("unwind") => *slot = Some(PanicStrategy::Unwind), Some("abort") => *slot = Some(PanicStrategy::Abort), _ => return false } true } fn parse_relro_level(slot: &mut Option, v: Option<&str>) -> bool { match v { Some(s) => { match s.parse::() { Ok(level) => *slot = Some(level), _ => return false } }, _ => return false } true } fn parse_sanitizer(slot: &mut Option, v: Option<&str>) -> bool { if let Some(Ok(s)) = v.map(str::parse) { *slot = Some(s); true } else { false } } fn parse_sanitizer_list(slot: &mut Vec, v: Option<&str>) -> bool { if let Some(v) = v { for s in v.split(',').map(str::parse) { if let Ok(s) = s { if !slot.contains(&s) { slot.push(s); } } else { return false; } } true } else { false } } fn parse_sanitizer_memory_track_origins(slot: &mut usize, v: Option<&str>) -> bool { match v.map(|s| s.parse()) { None => { *slot = 2; true } Some(Ok(i)) if i <= 2 => { *slot = i; true } _ => { false } } } fn parse_cfguard(slot: &mut CFGuard, v: Option<&str>) -> bool { match v { Some("disabled") => *slot = CFGuard::Disabled, Some("nochecks") => *slot = CFGuard::NoChecks, Some("checks") => *slot = CFGuard::Checks, _ => return false, } true } fn parse_linker_flavor(slote: &mut Option, v: Option<&str>) -> bool { match v.and_then(LinkerFlavor::from_str) { Some(lf) => *slote = Some(lf), _ => return false, } true } fn parse_optimization_fuel(slot: &mut Option<(String, u64)>, v: Option<&str>) -> bool { match v { None => false, Some(s) => { let parts = s.split('=').collect::>(); if parts.len() != 2 { return false; } let crate_name = parts[0].to_string(); let fuel = parts[1].parse::(); if fuel.is_err() { return false; } *slot = Some((crate_name, fuel.unwrap())); true } } } fn parse_unpretty(slot: &mut Option, v: Option<&str>) -> bool { match v { None => false, Some(s) if s.split('=').count() <= 2 => { *slot = Some(s.to_string()); true } _ => false, } } fn parse_treat_err_as_bug(slot: &mut Option, v: Option<&str>) -> bool { match v { Some(s) => { *slot = s.parse().ok().filter(|&x| x != 0); slot.unwrap_or(0) != 0 } None => { *slot = Some(1); true } } } fn parse_lto(slot: &mut LtoCli, v: Option<&str>) -> bool { if v.is_some() { let mut bool_arg = None; if parse_opt_bool(&mut bool_arg, v) { *slot = if bool_arg.unwrap() { LtoCli::Yes } else { LtoCli::No }; return true } } *slot = match v { None => LtoCli::NoParam, Some("thin") => LtoCli::Thin, Some("fat") => LtoCli::Fat, Some(_) => return false, }; true } fn parse_linker_plugin_lto(slot: &mut LinkerPluginLto, v: Option<&str>) -> bool { if v.is_some() { let mut bool_arg = None; if parse_opt_bool(&mut bool_arg, v) { *slot = if bool_arg.unwrap() { LinkerPluginLto::LinkerPluginAuto } else { LinkerPluginLto::Disabled }; return true } } *slot = match v { None => LinkerPluginLto::LinkerPluginAuto, Some(path) => LinkerPluginLto::LinkerPlugin(PathBuf::from(path)), }; true } fn parse_switch_with_opt_path(slot: &mut SwitchWithOptPath, v: Option<&str>) -> bool { *slot = match v { None => SwitchWithOptPath::Enabled(None), Some(path) => SwitchWithOptPath::Enabled(Some(PathBuf::from(path))), }; true } fn parse_merge_functions(slot: &mut Option, v: Option<&str>) -> bool { match v.and_then(|s| MergeFunctions::from_str(s).ok()) { Some(mergefunc) => *slot = Some(mergefunc), _ => return false, } true } fn parse_symbol_mangling_version( slot: &mut SymbolManglingVersion, v: Option<&str>, ) -> bool { *slot = match v { Some("legacy") => SymbolManglingVersion::Legacy, Some("v0") => SymbolManglingVersion::V0, _ => return false, }; true } } ) } options! {CodegenOptions, CodegenSetter, basic_codegen_options, build_codegen_options, "C", "codegen", CG_OPTIONS, cg_type_desc, cgsetters, ar: Option = (None, parse_opt_string, [UNTRACKED], "this option is deprecated and does nothing"), linker: Option = (None, parse_opt_pathbuf, [UNTRACKED], "system linker to link outputs with"), link_arg: Vec = (vec![], parse_string_push, [UNTRACKED], "a single extra argument to append to the linker invocation (can be used several times)"), link_args: Option> = (None, parse_opt_list, [UNTRACKED], "extra arguments to append to the linker invocation (space separated)"), link_dead_code: bool = (false, parse_bool, [UNTRACKED], "don't let linker strip dead code (turning it on can be used for code coverage)"), lto: LtoCli = (LtoCli::Unspecified, parse_lto, [TRACKED], "perform LLVM link-time optimizations"), target_cpu: Option = (None, parse_opt_string, [TRACKED], "select target processor (`rustc --print target-cpus` for details)"), target_feature: String = (String::new(), parse_string, [TRACKED], "target specific attributes. (`rustc --print target-features` for details). \ This feature is unsafe."), passes: Vec = (Vec::new(), parse_list, [TRACKED], "a list of extra LLVM passes to run (space separated)"), llvm_args: Vec = (Vec::new(), parse_list, [TRACKED], "a list of arguments to pass to LLVM (space separated)"), save_temps: bool = (false, parse_bool, [UNTRACKED], "save all temporary output files during compilation"), rpath: bool = (false, parse_bool, [UNTRACKED], "set rpath values in libs/exes"), overflow_checks: Option = (None, parse_opt_bool, [TRACKED], "use overflow checks for integer arithmetic"), no_prepopulate_passes: bool = (false, parse_bool, [TRACKED], "don't pre-populate the pass manager with a list of passes"), no_vectorize_loops: bool = (false, parse_bool, [TRACKED], "don't run the loop vectorization optimization passes"), no_vectorize_slp: bool = (false, parse_bool, [TRACKED], "don't run LLVM's SLP vectorization pass"), soft_float: bool = (false, parse_bool, [TRACKED], "use soft float ABI (*eabihf targets only)"), prefer_dynamic: bool = (false, parse_bool, [TRACKED], "prefer dynamic linking to static linking"), no_integrated_as: bool = (false, parse_bool, [TRACKED], "use an external assembler rather than LLVM's integrated one"), no_redzone: Option = (None, parse_opt_bool, [TRACKED], "disable the use of the redzone"), relocation_model: Option = (None, parse_opt_string, [TRACKED], "choose the relocation model to use (`rustc --print relocation-models` for details)"), code_model: Option = (None, parse_opt_string, [TRACKED], "choose the code model to use (`rustc --print code-models` for details)"), metadata: Vec = (Vec::new(), parse_list, [TRACKED], "metadata to mangle symbol names with"), extra_filename: String = (String::new(), parse_string, [UNTRACKED], "extra data to put in each output filename"), codegen_units: Option = (None, parse_opt_uint, [UNTRACKED], "divide crate into N units to optimize in parallel"), remark: Passes = (Passes::Some(Vec::new()), parse_passes, [UNTRACKED], "print remarks for these optimization passes (space separated, or \"all\")"), no_stack_check: bool = (false, parse_bool, [UNTRACKED], "the `--no-stack-check` flag is deprecated and does nothing"), debuginfo: Option = (None, parse_opt_uint, [TRACKED], "debug info emission level, 0 = no debug info, 1 = line tables only, \ 2 = full debug info with variable and type information"), opt_level: Option = (None, parse_opt_string, [TRACKED], "optimize with possible levels 0-3, s, or z"), force_frame_pointers: Option = (None, parse_opt_bool, [TRACKED], "force use of the frame pointers"), debug_assertions: Option = (None, parse_opt_bool, [TRACKED], "explicitly enable the `cfg(debug_assertions)` directive"), inline_threshold: Option = (None, parse_opt_uint, [TRACKED], "set the threshold for inlining a function (default: 225)"), panic: Option = (None, parse_panic_strategy, [TRACKED], "panic strategy to compile crate with"), incremental: Option = (None, parse_opt_string, [UNTRACKED], "enable incremental compilation"), default_linker_libraries: Option = (None, parse_opt_bool, [UNTRACKED], "allow the linker to link its default libraries"), linker_flavor: Option = (None, parse_linker_flavor, [UNTRACKED], "linker flavor"), linker_plugin_lto: LinkerPluginLto = (LinkerPluginLto::Disabled, parse_linker_plugin_lto, [TRACKED], "generate build artifacts that are compatible with linker-based LTO."), profile_generate: SwitchWithOptPath = (SwitchWithOptPath::Disabled, parse_switch_with_opt_path, [TRACKED], "compile the program with profiling instrumentation"), profile_use: Option = (None, parse_opt_pathbuf, [TRACKED], "use the given `.profdata` file for profile-guided optimization"), } options! {DebuggingOptions, DebuggingSetter, basic_debugging_options, build_debugging_options, "Z", "debugging", DB_OPTIONS, db_type_desc, dbsetters, codegen_backend: Option = (None, parse_opt_string, [TRACKED], "the backend to use"), verbose: bool = (false, parse_bool, [UNTRACKED], "in general, enable more debug printouts"), span_free_formats: bool = (false, parse_bool, [UNTRACKED], "when debug-printing compiler state, do not include spans"), // o/w tests have closure@path identify_regions: bool = (false, parse_bool, [UNTRACKED], "make unnamed regions display as '# (where # is some non-ident unique id)"), borrowck: Option = (None, parse_opt_string, [UNTRACKED], "select which borrowck is used (`mir` or `migrate`)"), time_passes: bool = (false, parse_bool, [UNTRACKED], "measure time of each rustc pass"), time: bool = (false, parse_bool, [UNTRACKED], "measure time of rustc processes"), time_llvm_passes: bool = (false, parse_bool, [UNTRACKED], "measure time of each LLVM pass"), llvm_time_trace: bool = (false, parse_bool, [UNTRACKED], "generate JSON tracing data file from LLVM data"), input_stats: bool = (false, parse_bool, [UNTRACKED], "gather statistics about the input"), asm_comments: bool = (false, parse_bool, [TRACKED], "generate comments into the assembly (may change behavior)"), verify_llvm_ir: bool = (false, parse_bool, [TRACKED], "verify LLVM IR"), borrowck_stats: bool = (false, parse_bool, [UNTRACKED], "gather borrowck statistics"), no_landing_pads: bool = (false, parse_bool, [TRACKED], "omit landing pads for unwinding"), fewer_names: bool = (false, parse_bool, [TRACKED], "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR)"), meta_stats: bool = (false, parse_bool, [UNTRACKED], "gather metadata statistics"), print_link_args: bool = (false, parse_bool, [UNTRACKED], "print the arguments passed to the linker"), print_llvm_passes: bool = (false, parse_bool, [UNTRACKED], "prints the LLVM optimization passes being run"), ast_json: bool = (false, parse_bool, [UNTRACKED], "print the AST as JSON and halt"), // We default to 1 here since we want to behave like // a sequential compiler for now. This'll likely be adjusted // in the future. Note that -Zthreads=0 is the way to get // the num_cpus behavior. threads: usize = (1, parse_threads, [UNTRACKED], "use a thread pool with N threads"), ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED], "print the pre-expansion AST as JSON and halt"), ls: bool = (false, parse_bool, [UNTRACKED], "list the symbols defined by a library crate"), save_analysis: bool = (false, parse_bool, [UNTRACKED], "write syntax and type analysis (in JSON format) information, in \ addition to normal output"), print_region_graph: bool = (false, parse_bool, [UNTRACKED], "prints region inference graph. \ Use with RUST_REGION_GRAPH=help for more info"), parse_only: bool = (false, parse_bool, [UNTRACKED], "parse only; do not compile, assemble, or link"), dual_proc_macros: bool = (false, parse_bool, [TRACKED], "load proc macros for both target and host, but only link to the target"), no_codegen: bool = (false, parse_bool, [TRACKED], "run all passes except codegen; no output"), treat_err_as_bug: Option = (None, parse_treat_err_as_bug, [TRACKED], "treat error number `val` that occurs as bug"), report_delayed_bugs: bool = (false, parse_bool, [TRACKED], "immediately print bugs registered with `delay_span_bug`"), macro_backtrace: bool = (false, parse_bool, [UNTRACKED], "show macro backtraces"), teach: bool = (false, parse_bool, [TRACKED], "show extended diagnostic help"), terminal_width: Option = (None, parse_opt_uint, [UNTRACKED], "set the current terminal width"), panic_abort_tests: bool = (false, parse_bool, [TRACKED], "support compiling tests with panic=abort"), dep_tasks: bool = (false, parse_bool, [UNTRACKED], "print tasks that execute and the color their dep node gets (requires debug build)"), incremental: Option = (None, parse_opt_string, [UNTRACKED], "enable incremental compilation (experimental)"), incremental_queries: bool = (true, parse_bool, [UNTRACKED], "enable incremental compilation support for queries (experimental)"), incremental_info: bool = (false, parse_bool, [UNTRACKED], "print high-level information about incremental reuse (or the lack thereof)"), incremental_dump_hash: bool = (false, parse_bool, [UNTRACKED], "dump hash information in textual format to stdout"), incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED], "verify incr. comp. hashes of green query instances"), incremental_ignore_spans: bool = (false, parse_bool, [UNTRACKED], "ignore spans during ICH computation -- used for testing"), instrument_mcount: bool = (false, parse_bool, [TRACKED], "insert function instrument code for mcount-based tracing"), dump_dep_graph: bool = (false, parse_bool, [UNTRACKED], "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv)"), query_dep_graph: bool = (false, parse_bool, [UNTRACKED], "enable queries of the dependency graph for regression testing"), no_analysis: bool = (false, parse_bool, [UNTRACKED], "parse and expand the source, but run no analysis"), unstable_options: bool = (false, parse_bool, [UNTRACKED], "adds unstable command line options to rustc interface"), force_overflow_checks: Option = (None, parse_opt_bool, [TRACKED], "force overflow checks on or off"), trace_macros: bool = (false, parse_bool, [UNTRACKED], "for every macro invocation, print its name and arguments"), debug_macros: bool = (false, parse_bool, [TRACKED], "emit line numbers debug info inside macros"), generate_arange_section: bool = (true, parse_bool, [TRACKED], "generate DWARF address ranges for faster lookups"), keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED], "don't clear the hygiene data after analysis"), keep_ast: bool = (false, parse_bool, [UNTRACKED], "keep the AST after lowering it to HIR"), show_span: Option = (None, parse_opt_string, [TRACKED], "show spans for compiler debugging (expr|pat|ty)"), print_type_sizes: bool = (false, parse_bool, [UNTRACKED], "print layout information for each type encountered"), print_mono_items: Option = (None, parse_opt_string, [UNTRACKED], "print the result of the monomorphization collection pass"), mir_opt_level: usize = (1, parse_uint, [TRACKED], "set the MIR optimization level (0-3, default: 1)"), mutable_noalias: Option = (None, parse_opt_bool, [TRACKED], "emit noalias metadata for mutable references (default: no)"), dump_mir: Option = (None, parse_opt_string, [UNTRACKED], "dump MIR state to file. `val` is used to select which passes and functions to dump. For example: `all` matches all passes and functions, `foo` matches all passes for functions whose name contains 'foo', `foo & ConstProp` only the 'ConstProp' pass for function names containing 'foo', `foo | bar` all passes for function names containing 'foo' or 'bar'."), dump_mir_dir: String = (String::from("mir_dump"), parse_string, [UNTRACKED], "the directory the MIR is dumped into"), dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED], "in addition to `.mir` files, create graphviz `.dot` files"), dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED], "if set, exclude the pass number when dumping MIR (used in tests)"), mir_emit_retag: bool = (false, parse_bool, [TRACKED], "emit Retagging MIR statements, interpreted e.g., by miri; implies -Zmir-opt-level=0"), perf_stats: bool = (false, parse_bool, [UNTRACKED], "print some performance-related statistics"), query_stats: bool = (false, parse_bool, [UNTRACKED], "print some statistics about the query system"), hir_stats: bool = (false, parse_bool, [UNTRACKED], "print some statistics about AST and HIR"), always_encode_mir: bool = (false, parse_bool, [TRACKED], "encode MIR of all functions into the crate metadata"), json_rendered: Option = (None, parse_opt_string, [UNTRACKED], "describes how to render the `rendered` field of json diagnostics"), unleash_the_miri_inside_of_you: bool = (false, parse_bool, [TRACKED], "take the breaks off const evaluation. NOTE: this is unsound"), osx_rpath_install_name: bool = (false, parse_bool, [TRACKED], "pass `-install_name @rpath/...` to the macOS linker"), sanitizer: Option = (None, parse_sanitizer, [TRACKED], "use a sanitizer"), sanitizer_recover: Vec = (vec![], parse_sanitizer_list, [TRACKED], "Enable recovery for selected sanitizers"), sanitizer_memory_track_origins: usize = (0, parse_sanitizer_memory_track_origins, [TRACKED], "Enable origins tracking in MemorySanitizer"), fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED], "set the optimization fuel quota for a crate"), print_fuel: Option = (None, parse_opt_string, [TRACKED], "make rustc print the total optimization fuel used by a crate"), force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED], "force all crates to be `rustc_private` unstable"), pre_link_arg: Vec = (vec![], parse_string_push, [UNTRACKED], "a single extra argument to prepend the linker invocation (can be used several times)"), pre_link_args: Option> = (None, parse_opt_list, [UNTRACKED], "extra arguments to prepend to the linker invocation (space separated)"), profile: bool = (false, parse_bool, [TRACKED], "insert profiling code"), relro_level: Option = (None, parse_relro_level, [TRACKED], "choose which RELRO level to use"), nll_facts: bool = (false, parse_bool, [UNTRACKED], "dump facts from NLL analysis into side files"), dont_buffer_diagnostics: bool = (false, parse_bool, [UNTRACKED], "emit diagnostics rather than buffering (breaks NLL error downgrading, sorting)."), polonius: bool = (false, parse_bool, [UNTRACKED], "enable polonius-based borrow-checker"), codegen_time_graph: bool = (false, parse_bool, [UNTRACKED], "generate a graphical HTML report of time spent in codegen and LLVM"), thinlto: Option = (None, parse_opt_bool, [TRACKED], "enable ThinLTO when possible"), inline_in_all_cgus: Option = (None, parse_opt_bool, [TRACKED], "control whether `#[inline]` functions are in all CGUs"), tls_model: Option = (None, parse_opt_string, [TRACKED], "choose the TLS model to use (`rustc --print tls-models` for details)"), saturating_float_casts: bool = (false, parse_bool, [TRACKED], "make float->int casts UB-free: numbers outside the integer type's range are clipped to \ the max/min integer respectively, and NaN is mapped to 0"), human_readable_cgu_names: bool = (false, parse_bool, [TRACKED], "generate human-readable, predictable names for codegen units"), dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED], "in dep-info output, omit targets for tracking dependencies of the dep-info files \ themselves"), unpretty: Option = (None, parse_unpretty, [UNTRACKED], "present the input source, unstable (and less-pretty) variants; valid types are any of the types for `--pretty`, as well as: `expanded`, `expanded,identified`, `expanded,hygiene` (with internal representations), `everybody_loops` (all function bodies replaced with `loop {}`), `hir` (the HIR), `hir,identified`, `hir,typed` (HIR with types for each node), `hir-tree` (dump the raw HIR), `mir` (the MIR), or `mir-cfg` (graphviz formatted MIR)"), run_dsymutil: Option = (None, parse_opt_bool, [TRACKED], "run `dsymutil` and delete intermediate object files"), ui_testing: Option = (None, parse_opt_bool, [UNTRACKED], "format compiler diagnostics in a way that's better suitable for UI testing"), embed_bitcode: bool = (false, parse_bool, [TRACKED], "embed LLVM bitcode in object files"), strip_debuginfo_if_disabled: Option = (None, parse_opt_bool, [TRACKED], "tell the linker to strip debuginfo when building without debuginfo enabled."), share_generics: Option = (None, parse_opt_bool, [TRACKED], "make the current crate share its generic instantiations"), no_parallel_llvm: bool = (false, parse_bool, [UNTRACKED], "don't run LLVM in parallel (while keeping codegen-units and ThinLTO)"), no_leak_check: bool = (false, parse_bool, [UNTRACKED], "disables the 'leak check' for subtyping; unsound, but useful for tests"), no_interleave_lints: bool = (false, parse_bool, [UNTRACKED], "don't interleave execution of lints; allows benchmarking individual lints"), crate_attr: Vec = (Vec::new(), parse_string_push, [TRACKED], "inject the given attribute in the crate"), self_profile: SwitchWithOptPath = (SwitchWithOptPath::Disabled, parse_switch_with_opt_path, [UNTRACKED], "run the self profiler and output the raw event data"), // keep this in sync with the event filter names in librustc_data_structures/profiling.rs self_profile_events: Option> = (None, parse_opt_comma_list, [UNTRACKED], "specifies which kinds of events get recorded by the self profiler; for example: `-Z self-profile-events=default,query-keys` all options: none, all, default, generic-activity, query-provider, query-cache-hit query-blocked, incr-cache-load, query-keys, function-args, args, llvm"), emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED], "emits a section containing stack size metadata"), plt: Option = (None, parse_opt_bool, [TRACKED], "whether to use the PLT when calling into shared libraries; only has effect for PIC code on systems with ELF binaries (default: PLT is disabled if full relro is enabled)"), merge_functions: Option = (None, parse_merge_functions, [TRACKED], "control the operation of the MergeFunctions LLVM pass, taking the same values as the target option of the same name"), allow_features: Option> = (None, parse_opt_comma_list, [TRACKED], "only allow the listed language features to be enabled in code (space separated)"), symbol_mangling_version: SymbolManglingVersion = (SymbolManglingVersion::Legacy, parse_symbol_mangling_version, [TRACKED], "which mangling version to use for symbol names"), binary_dep_depinfo: bool = (false, parse_bool, [TRACKED], "include artifacts (sysroot, crate dependencies) used during compilation in dep-info"), insert_sideeffect: bool = (false, parse_bool, [TRACKED], "fix undefined behavior when a thread doesn't eventually make progress \ (such as entering an empty infinite loop) by inserting llvm.sideeffect"), deduplicate_diagnostics: Option = (None, parse_opt_bool, [UNTRACKED], "deduplicate identical diagnostics"), control_flow_guard: CFGuard = (CFGuard::Disabled, parse_cfguard, [UNTRACKED], "use Windows Control Flow Guard (`disabled`, `nochecks` or `checks`)"), no_link: bool = (false, parse_bool, [TRACKED], "compile without linking"), link_only: bool = (false, parse_bool, [TRACKED], "link the `.rlink` file generated by `-Z no-link`"), new_llvm_pass_manager: Option = (None, parse_opt_bool, [TRACKED], "use new LLVM pass manager"), }