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Rollup merge of #67367 - 0dvictor:options, r=Centril 

Move command line option definitions into a dedicated file

config.rs has reached the 3000 line tidy limit, this commit moves command line option definitions into a new file - options.rs,  and leaves the rest of configuration infrastructure in config.rs.
This commit is contained in:
Mazdak Farrokhzad 2019-12-20 12:17:26 +01:00 committed by GitHub
parent efd31c23e8 83fc600a28
commit 9f39cb1d8e
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 957 additions and 936 deletions
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939
src/librustc_session/config.rs
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@ -1,8 +1,8 @@
// ignore-tidy-filelength
//! Contains infrastructure for configuring the compiler, including parsing //! Contains infrastructure for configuring the compiler, including parsing
//! command-line options. //! command-line options.
pub use crate::options::*;
use crate::lint; use crate::lint;
use crate::utils::NativeLibraryKind; use crate::utils::NativeLibraryKind;
use crate::{early_error, early_warn, Session}; use crate::{early_error, early_warn, Session};
@ -11,7 +11,6 @@ use crate::search_paths::SearchPath;
use rustc_data_structures::fx::FxHashSet; use rustc_data_structures::fx::FxHashSet;
use rustc_data_structures::impl_stable_hash_via_hash; use rustc_data_structures::impl_stable_hash_via_hash;
use rustc_target::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, RelroLevel};
use rustc_target::spec::{Target, TargetTriple}; use rustc_target::spec::{Target, TargetTriple};
use syntax_pos::source_map::{FileName, FilePathMapping}; use syntax_pos::source_map::{FileName, FilePathMapping};
@ -31,8 +30,6 @@ use std::collections::btree_map::{
}; };
use std::fmt; use std::fmt;
use std::str::{self, FromStr}; use std::str::{self, FromStr};
use std::hash::Hasher;
use std::collections::hash_map::DefaultHasher;
use std::iter::{self, FromIterator}; use std::iter::{self, FromIterator};
use std::path::{Path, PathBuf}; use std::path::{Path, PathBuf};
@ -382,131 +379,6 @@ impl ExternEntry {
} }
} }
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<CrateType> [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<lint::Level> [TRACKED],
describe_lints: bool [UNTRACKED],
output_types: OutputTypes [TRACKED],
search_paths: Vec<SearchPath> [UNTRACKED],
libs: Vec<(String, Option<String>, Option<NativeLibraryKind>)> [TRACKED],
maybe_sysroot: Option<PathBuf> [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<PathBuf> [UNTRACKED],
debugging_opts: DebuggingOptions [TRACKED],
prints: Vec<PrintRequest> [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<String> [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<String> [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<usize> [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<PpMode> [UNTRACKED],
}
);
#[derive(Copy, Clone, PartialEq, Eq, Debug)] #[derive(Copy, Clone, PartialEq, Eq, Debug)]
pub enum PrintRequest { pub enum PrintRequest {
FileNames, FileNames,
@ -767,811 +639,6 @@ impl Passes {
} }
} }
/// 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}=<value>)",
$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_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};
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<bool>, 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<String>, v: Option<&str>) -> bool {
match v {
Some(s) => { *slot = Some(s.to_string()); true },
None => false,
}
}
fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, 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<String>, v: Option<&str>) -> bool {
match v {
Some(s) => { slot.push(s.to_string()); true },
None => false,
}
}
fn parse_pathbuf_push(slot: &mut Vec<PathBuf>, v: Option<&str>) -> bool {
match v {
Some(s) => { slot.push(PathBuf::from(s)); true },
None => false,
}
}
fn parse_list(slot: &mut Vec<String>, 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<Vec<String>>, 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<Vec<String>>, 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<usize>, 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<PanicStrategy>, 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<RelroLevel>, v: Option<&str>) -> bool {
match v {
Some(s) => {
match s.parse::<RelroLevel>() {
Ok(level) => *slot = Some(level),
_ => return false
}
},
_ => return false
}
true
}
fn parse_sanitizer(slot: &mut Option<Sanitizer>, 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<Sanitizer>, 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_linker_flavor(slote: &mut Option<LinkerFlavor>, 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::<Vec<_>>();
if parts.len() != 2 { return false; }
let crate_name = parts[0].to_string();
let fuel = parts[1].parse::<u64>();
if fuel.is_err() { return false; }
*slot = Some((crate_name, fuel.unwrap()));
true
}
}
}
fn parse_unpretty(slot: &mut Option<String>, 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<usize>, 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<MergeFunctions>, 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<String> = (None, parse_opt_string, [UNTRACKED],
"this option is deprecated and does nothing"),
linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
"system linker to link outputs with"),
link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
"a single extra argument to append to the linker invocation (can be used several times)"),
link_args: Option<Vec<String>> = (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<String> = (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<String> = (Vec::new(), parse_list, [TRACKED],
"a list of extra LLVM passes to run (space separated)"),
llvm_args: Vec<String> = (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<bool> = (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<bool> = (None, parse_opt_bool, [TRACKED],
"disable the use of the redzone"),
relocation_model: Option<String> = (None, parse_opt_string, [TRACKED],
"choose the relocation model to use (`rustc --print relocation-models` for details)"),
code_model: Option<String> = (None, parse_opt_string, [TRACKED],
"choose the code model to use (`rustc --print code-models` for details)"),
metadata: Vec<String> = (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<usize> = (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<usize> = (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<String> = (None, parse_opt_string, [TRACKED],
"optimize with possible levels 0-3, s, or z"),
force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
"force use of the frame pointers"),
debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
"explicitly enable the `cfg(debug_assertions)` directive"),
inline_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
"set the threshold for inlining a function (default: 225)"),
panic: Option<PanicStrategy> = (None, parse_panic_strategy,
[TRACKED], "panic strategy to compile crate with"),
incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
"enable incremental compilation"),
default_linker_libraries: Option<bool> = (None, parse_opt_bool, [UNTRACKED],
"allow the linker to link its default libraries"),
linker_flavor: Option<LinkerFlavor> = (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<PathBuf> = (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<String> = (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<String> = (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"),
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<usize> = (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`"),
external_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
"show macro backtraces even for non-local macros"),
teach: bool = (false, parse_bool, [TRACKED],
"show extended diagnostic help"),
terminal_width: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
"set the current terminal width"),
panic_abort_tests: bool = (false, parse_bool, [TRACKED],
"support compiling tests with panic=abort"),
continue_parse_after_error: bool = (false, parse_bool, [TRACKED],
"attempt to recover from parse errors (experimental)"),
dep_tasks: bool = (false, parse_bool, [UNTRACKED],
"print tasks that execute and the color their dep node gets (requires debug build)"),
incremental: Option<String> = (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<bool> = (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<String> = (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<String> = (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<bool> = (None, parse_opt_bool, [TRACKED],
"emit noalias metadata for mutable references (default: no)"),
dump_mir: Option<String> = (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<String> = (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<Sanitizer> = (None, parse_sanitizer, [TRACKED],
"use a sanitizer"),
sanitizer_recover: Vec<Sanitizer> = (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<String> = (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<String> = (vec![], parse_string_push, [UNTRACKED],
"a single extra argument to prepend the linker invocation (can be used several times)"),
pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
"extra arguments to prepend to the linker invocation (space separated)"),
profile: bool = (false, parse_bool, [TRACKED],
"insert profiling code"),
disable_instrumentation_preinliner: bool = (false, parse_bool, [TRACKED],
"Disable the instrumentation pre-inliner, useful for profiling / PGO."),
relro_level: Option<RelroLevel> = (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"),
nll_dont_emit_read_for_match: bool = (false, parse_bool, [UNTRACKED],
"in match codegen, do not include FakeRead statements (used by mir-borrowck)"),
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<bool> = (None, parse_opt_bool, [TRACKED],
"enable ThinLTO when possible"),
inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
"control whether `#[inline]` functions are in all CGUs"),
tls_model: Option<String> = (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<String> = (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<bool> = (None, parse_opt_bool, [TRACKED],
"run `dsymutil` and delete intermediate object files"),
ui_testing: bool = (false, parse_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<bool> = (None, parse_opt_bool, [TRACKED],
"tell the linker to strip debuginfo when building without debuginfo enabled."),
share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
"make the current crate share its generic instantiations"),
chalk: bool = (false, parse_bool, [TRACKED],
"enable the experimental Chalk-based trait solving engine"),
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<String> = (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"),
self_profile_events: Option<Vec<String>> = (None, parse_opt_comma_list, [UNTRACKED],
"specifies which kinds of events get recorded by the self profiler"),
emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
"emits a section containing stack size metadata"),
plt: Option<bool> = (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<MergeFunctions> = (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<Vec<String>> = (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"),
}
pub const fn default_lib_output() -> CrateType { pub const fn default_lib_output() -> CrateType {
CrateType::Rlib CrateType::Rlib
} }
@ -2953,7 +2020,7 @@ impl PpMode {
/// `Hash` implementation for `DepTrackingHash`. It's important though that /// `Hash` implementation for `DepTrackingHash`. It's important though that
/// we have an opt-in scheme here, so one is hopefully forced to think about /// we have an opt-in scheme here, so one is hopefully forced to think about
/// how the hash should be calculated when adding a new command-line argument. /// how the hash should be calculated when adding a new command-line argument.
mod dep_tracking { crate mod dep_tracking {
use crate::lint; use crate::lint;
use crate::utils::NativeLibraryKind; use crate::utils::NativeLibraryKind;
use std::collections::BTreeMap; use std::collections::BTreeMap;

3
src/librustc_session/lib.rs
View File

@ -1,3 +1,4 @@
#![feature(crate_visibility_modifier)]
#![feature(test)] #![feature(test)]
// Use the test crate here so we depend on getopts through it. This allow tools to link to both // Use the test crate here so we depend on getopts through it. This allow tools to link to both
@ -13,7 +14,9 @@ pub mod node_id;
pub mod parse; pub mod parse;
mod code_stats; mod code_stats;
#[macro_use]
pub mod config; pub mod config;
mod options;
pub mod filesearch; pub mod filesearch;
pub mod search_paths; pub mod search_paths;

951
src/librustc_session/options.rs Normal file
View File

@ -0,0 +1,951 @@
use crate::config::*;
use crate::lint;
use crate::utils::NativeLibraryKind;
use crate::early_error;
use crate::search_paths::SearchPath;
use rustc_target::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, RelroLevel};
use rustc_target::spec::TargetTriple;
use syntax_pos::edition::Edition;
use rustc_feature::UnstableFeatures;
use getopts;
use std::collections::BTreeMap;
use std::str;
use std::hash::Hasher;
use std::collections::hash_map::DefaultHasher;
use std::path::PathBuf;
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<CrateType> [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<lint::Level> [TRACKED],
describe_lints: bool [UNTRACKED],
output_types: OutputTypes [TRACKED],
search_paths: Vec<SearchPath> [UNTRACKED],
libs: Vec<(String, Option<String>, Option<NativeLibraryKind>)> [TRACKED],
maybe_sysroot: Option<PathBuf> [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<PathBuf> [UNTRACKED],
debugging_opts: DebuggingOptions [TRACKED],
prints: Vec<PrintRequest> [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<String> [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<String> [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<usize> [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<PpMode> [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}=<value>)",
$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_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};
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<bool>, 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<String>, v: Option<&str>) -> bool {
match v {
Some(s) => { *slot = Some(s.to_string()); true },
None => false,
}
}
fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, 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<String>, v: Option<&str>) -> bool {
match v {
Some(s) => { slot.push(s.to_string()); true },
None => false,
}
}
fn parse_pathbuf_push(slot: &mut Vec<PathBuf>, v: Option<&str>) -> bool {
match v {
Some(s) => { slot.push(PathBuf::from(s)); true },
None => false,
}
}
fn parse_list(slot: &mut Vec<String>, 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<Vec<String>>, 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<Vec<String>>, 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<usize>, 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<PanicStrategy>, 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<RelroLevel>, v: Option<&str>) -> bool {
match v {
Some(s) => {
match s.parse::<RelroLevel>() {
Ok(level) => *slot = Some(level),
_ => return false
}
},
_ => return false
}
true
}
fn parse_sanitizer(slot: &mut Option<Sanitizer>, 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<Sanitizer>, 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_linker_flavor(slote: &mut Option<LinkerFlavor>, 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::<Vec<_>>();
if parts.len() != 2 { return false; }
let crate_name = parts[0].to_string();
let fuel = parts[1].parse::<u64>();
if fuel.is_err() { return false; }
*slot = Some((crate_name, fuel.unwrap()));
true
}
}
}
fn parse_unpretty(slot: &mut Option<String>, 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<usize>, 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<MergeFunctions>, 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<String> = (None, parse_opt_string, [UNTRACKED],
"this option is deprecated and does nothing"),
linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
"system linker to link outputs with"),
link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
"a single extra argument to append to the linker invocation (can be used several times)"),
link_args: Option<Vec<String>> = (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<String> = (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<String> = (Vec::new(), parse_list, [TRACKED],
"a list of extra LLVM passes to run (space separated)"),
llvm_args: Vec<String> = (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<bool> = (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<bool> = (None, parse_opt_bool, [TRACKED],
"disable the use of the redzone"),
relocation_model: Option<String> = (None, parse_opt_string, [TRACKED],
"choose the relocation model to use (`rustc --print relocation-models` for details)"),
code_model: Option<String> = (None, parse_opt_string, [TRACKED],
"choose the code model to use (`rustc --print code-models` for details)"),
metadata: Vec<String> = (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<usize> = (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<usize> = (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<String> = (None, parse_opt_string, [TRACKED],
"optimize with possible levels 0-3, s, or z"),
force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
"force use of the frame pointers"),
debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
"explicitly enable the `cfg(debug_assertions)` directive"),
inline_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
"set the threshold for inlining a function (default: 225)"),
panic: Option<PanicStrategy> = (None, parse_panic_strategy,
[TRACKED], "panic strategy to compile crate with"),
incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
"enable incremental compilation"),
default_linker_libraries: Option<bool> = (None, parse_opt_bool, [UNTRACKED],
"allow the linker to link its default libraries"),
linker_flavor: Option<LinkerFlavor> = (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<PathBuf> = (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<String> = (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<String> = (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"),
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<usize> = (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`"),
external_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
"show macro backtraces even for non-local macros"),
teach: bool = (false, parse_bool, [TRACKED],
"show extended diagnostic help"),
terminal_width: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
"set the current terminal width"),
panic_abort_tests: bool = (false, parse_bool, [TRACKED],
"support compiling tests with panic=abort"),
continue_parse_after_error: bool = (false, parse_bool, [TRACKED],
"attempt to recover from parse errors (experimental)"),
dep_tasks: bool = (false, parse_bool, [UNTRACKED],
"print tasks that execute and the color their dep node gets (requires debug build)"),
incremental: Option<String> = (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<bool> = (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<String> = (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<String> = (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<bool> = (None, parse_opt_bool, [TRACKED],
"emit noalias metadata for mutable references (default: no)"),
dump_mir: Option<String> = (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<String> = (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<Sanitizer> = (None, parse_sanitizer, [TRACKED],
"use a sanitizer"),
sanitizer_recover: Vec<Sanitizer> = (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<String> = (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<String> = (vec![], parse_string_push, [UNTRACKED],
"a single extra argument to prepend the linker invocation (can be used several times)"),
pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
"extra arguments to prepend to the linker invocation (space separated)"),
profile: bool = (false, parse_bool, [TRACKED],
"insert profiling code"),
disable_instrumentation_preinliner: bool = (false, parse_bool, [TRACKED],
"Disable the instrumentation pre-inliner, useful for profiling / PGO."),
relro_level: Option<RelroLevel> = (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"),
nll_dont_emit_read_for_match: bool = (false, parse_bool, [UNTRACKED],
"in match codegen, do not include FakeRead statements (used by mir-borrowck)"),
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<bool> = (None, parse_opt_bool, [TRACKED],
"enable ThinLTO when possible"),
inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
"control whether `#[inline]` functions are in all CGUs"),
tls_model: Option<String> = (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<String> = (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<bool> = (None, parse_opt_bool, [TRACKED],
"run `dsymutil` and delete intermediate object files"),
ui_testing: bool = (false, parse_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<bool> = (None, parse_opt_bool, [TRACKED],
"tell the linker to strip debuginfo when building without debuginfo enabled."),
share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
"make the current crate share its generic instantiations"),
chalk: bool = (false, parse_bool, [TRACKED],
"enable the experimental Chalk-based trait solving engine"),
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<String> = (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"),
self_profile_events: Option<Vec<String>> = (None, parse_opt_comma_list, [UNTRACKED],
"specifies which kinds of events get recorded by the self profiler"),
emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
"emits a section containing stack size metadata"),
plt: Option<bool> = (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<MergeFunctions> = (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<Vec<String>> = (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"),
}