Enum rustc::mir::StatementKind[][src]

pub enum StatementKind<'tcx> {
    Assign(Place<'tcx>, Rvalue<'tcx>),
    ReadForMatch(Place<'tcx>),
    SetDiscriminant {
        place: Place<'tcx>,
        variant_index: usize,
    },
    StorageLive(Local),
    StorageDead(Local),
    InlineAsm {
        asm: Box<InlineAsm>,
        outputs: Vec<Place<'tcx>>,
        inputs: Vec<Operand<'tcx>>,
    },
    Validate(ValidationOpVec<ValidationOperand<'tcx, Place<'tcx>>>),
    EndRegion(Scope),
    UserAssertTy(CanonicalTy<'tcx>, Local),
    Nop,
}
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Variants

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Write the RHS Rvalue to the LHS Place.

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This represents all the reading that a pattern match may do (e.g. inspecting constants and discriminant values).

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Write the discriminant for a variant to the enum Place.

Fields of SetDiscriminant

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Start a live range for the storage of the local.

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End the current live range for the storage of the local.

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Execute a piece of inline Assembly.

Fields of InlineAsm

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Assert the given places to be valid inhabitants of their type. These statements are currently only interpreted by miri and only generated when "-Z mir-emit-validate" is passed. See https://internals.rust-lang.org/t/types-as-contracts/5562/73 for more details.

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Mark one terminating point of a region scope (i.e. static region). (The starting point(s) arise implicitly from borrows.)

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Encodes a user's type assertion. These need to be preserved intact so that NLL can respect them. For example:

let (a, b): (T, U) = y;

Here we would insert a UserAssertTy<(T, U)>(y) instruction to check that the type of y is the right thing.

CanonicalTy is used to capture "inference variables" from the user's types. For example:

let x: Vec<_> = ...;
let y: &u32 = ...;

would result in Vec<?0> and &'?0 u32 respectively (where ?0 is a canonicalized variable).

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No-op. Useful for deleting instructions without affecting statement indices.

Trait Implementations

impl<'a, 'gcx> HashStable<StableHashingContext<'a>> for StatementKind<'gcx>
[src]

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impl<'tcx> Clone for StatementKind<'tcx>
[src]

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl<'tcx> Debug for StatementKind<'tcx>
[src]

Formats the value using the given formatter. Read more

impl<'tcx> Encodable for StatementKind<'tcx>
[src]

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impl<'tcx> Decodable for StatementKind<'tcx>
[src]

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impl<'tcx> TypeFoldable<'tcx> for StatementKind<'tcx>
[src]

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True if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free. Read more

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True if this self has any regions that escape binder (and hence are not bound by it). Read more

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"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound. Read more

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True if there any any un-erased free regions.

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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching. Read more

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True if there are any late-bound regions

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A visitor that does not recurse into types, works like fn walk_shallow in Ty.

Auto Trait Implementations

impl<'tcx> !Send for StatementKind<'tcx>

impl<'tcx> !Sync for StatementKind<'tcx>