Module target_features 

Re-exports

use rustc_attr_ir::InstructionSetAttr; 🔒

use rustc_data_structures::fx::FxHashMap; 🔒

use rustc_data_structures::fx::FxHashSet; 🔒

use rustc_data_structures::fx::FxIndexSet; 🔒

use rustc_data_structures::unord::UnordMap; 🔒

use rustc_data_structures::unord::UnordSet; 🔒

use rustc_hir::def::DefKind; 🔒

use rustc_hir::def_id::DefId; 🔒

use rustc_hir::def_id::LOCAL_CRATE; 🔒

use rustc_hir::def_id::LocalDefId; 🔒

use rustc_lint_defs::builtin::AARCH64_SOFTFLOAT_NEON; 🔒

use rustc_lint_defs::builtin::X86_SOFTFLOAT_SSE; 🔒

use rustc_middle::middle::codegen_fn_attrs::TargetFeature; 🔒

use rustc_middle::middle::codegen_fn_attrs::TargetFeatureKind; 🔒

use rustc_middle::query::Providers; 🔒

use rustc_middle::ty::TyCtxt; 🔒

use rustc_session::EarlySession; 🔒

use rustc_session::diagnostics::feature_err; 🔒

use rustc_span::Span; 🔒

use rustc_span::Symbol; 🔒

use rustc_span::edit_distance; 🔒

use rustc_span::sym; 🔒

use rustc_target::spec::Arch; 🔒

use rustc_target::spec::SanitizerSet; 🔒

use rustc_target::spec::Target; 🔒

use rustc_target::target_features::RUSTC_SPECIFIC_FEATURES; 🔒

use rustc_target::target_features::Stability; 🔒

use smallvec::SmallVec; 🔒

use crate::diagnostics::CrossArchFeatureNote; 🔒

use crate::diagnostics::FeatureNotValid; 🔒

use crate::diagnostics::FeatureNotValidHint; 🔒

use crate::diagnostics; 🔒

use crate::target_features; 🔒

Functions

asm_target_features 🔒

Computes the set of target features used in a function for the purposes of inline assembly.

check_target_feature_trait_unsafe 🔒

Checks the function annotated with #[target_feature] is not a safe trait method implementation, reporting an error if it is.

check_tied_features

Given a map from target_features to whether they are enabled or disabled, ensure only valid combinations are allowed. Returns Some if a violation is found.

flag_to_backend_features

Translates the -Ctarget-feature flag into a backend target feature list.

from_target_feature_attr 🔒

Compute the enabled target features from the #[target_feature] function attribute. Enabled target features are added to target_features.

internal_target_features

Utility function for a codegen backend to compute the set of all actually enabled Rust target features (which will be stored in sess.internal_target_features).

parse_rust_feature_list 🔒

Parse the value of the target spec features field or -Ctarget-feature, calling the closure for each entry in the list, also expanding implied features (but only for actual Rust target features). If the list contains a syntactically invalid item (not starting with +/-) , the error callback is invoked.

provide 🔒

retpoline_features_by_flags

Computes the backend target features to be added to account for retpoline flags. Used by both LLVM and GCC since their target features are, conveniently, the same.

sanitizer_features_by_flags

Computes the backend target features to be added to account for sanitizer flags.

target_spec_to_backend_features

Translates the target spec features field into a backend target feature list.