Module cranelift_codegen::settings[−][src]

Shared settings module.

This module defines data structures to access the settings defined in the meta language.

Each settings group is translated to a Flags struct either in this module or in its ISA-specific settings module. The struct provides individual getter methods for all of the settings as well as computed predicate flags.

The Flags struct is immutable once it has been created. A Builder instance is used to create it.

Example

use cranelift_codegen::settings::{self, Configurable};

let mut b = settings::builder();
b.set("opt_level", "speed_and_size");

let f = settings::Flags::new(b);
assert_eq!(f.opt_level(), settings::OptLevel::SpeedAndSize);

Modules

detail

Implementation details for generated code.

Structs

Builder	Collect settings values based on a template.
Flags	Flags group `shared`.
FlagsOrIsa	Wrapper containing flags and optionally a `TargetIsa` trait object.
PredicateView	A reference to just the boolean predicates of a settings object.

Enums

LibcallCallConv	Values for `shared.libcall_call_conv`.
OptLevel	Values for `shared.opt_level`.
Regalloc	Values for `shared.regalloc`.
SetError	An error produced when changing a setting.
TlsModel	Values for `shared.tls_model`.

Traits

Configurable

A string-based configurator for settings groups.

Functions

builder

Create a settings::Builder for the shared settings group.

Type Definitions

SetResult

A result returned when changing a setting.