Enum rustc_mir_transform::gvn::Value
source · enum Value<'tcx> {
Show 13 variants
Opaque(usize),
Constant(Const<'tcx>),
Aggregate(Ty<'tcx>, VariantIdx, Vec<VnIndex>),
Repeat(VnIndex, Const<'tcx>),
Address {
place: Place<'tcx>,
provenance: usize,
},
Projection(VnIndex, ProjectionElem<VnIndex, Ty<'tcx>>),
Discriminant(VnIndex),
Len(VnIndex),
NullaryOp(NullOp<'tcx>, Ty<'tcx>),
UnaryOp(UnOp, VnIndex),
BinaryOp(BinOp, VnIndex, VnIndex),
CheckedBinaryOp(BinOp, VnIndex, VnIndex),
Cast {
kind: CastKind,
value: VnIndex,
from: Ty<'tcx>,
to: Ty<'tcx>,
},
}
Variants§
Opaque(usize)
Used to represent values we know nothing about.
The usize
is a counter incremented by new_opaque
.
Constant(Const<'tcx>)
Evaluated or unevaluated constant value.
Aggregate(Ty<'tcx>, VariantIdx, Vec<VnIndex>)
An aggregate value, either tuple/closure/struct/enum. This does not contain unions, as we cannot reason with the value.
Repeat(VnIndex, Const<'tcx>)
This corresponds to a [value; count]
expression.
Address
Fields
The address of a place.
Projection(VnIndex, ProjectionElem<VnIndex, Ty<'tcx>>)
This is the value obtained by projecting another value.
Discriminant(VnIndex)
Discriminant of the given value.
Len(VnIndex)
Length of an array or slice.
NullaryOp(NullOp<'tcx>, Ty<'tcx>)
UnaryOp(UnOp, VnIndex)
BinaryOp(BinOp, VnIndex, VnIndex)
CheckedBinaryOp(BinOp, VnIndex, VnIndex)
Cast
Trait Implementations§
source§impl<'tcx> PartialEq<Value<'tcx>> for Value<'tcx>
impl<'tcx> PartialEq<Value<'tcx>> for Value<'tcx>
impl<'tcx> Eq for Value<'tcx>
impl<'tcx> StructuralEq for Value<'tcx>
impl<'tcx> StructuralPartialEq for Value<'tcx>
Auto Trait Implementations§
impl<'tcx> !RefUnwindSafe for Value<'tcx>
impl<'tcx> Send for Value<'tcx>
impl<'tcx> Sync for Value<'tcx>
impl<'tcx> Unpin for Value<'tcx>
impl<'tcx> !UnwindSafe for Value<'tcx>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 48 bytes
Size for each variant:
Opaque
: 15 bytesConstant
: 47 bytesAggregate
: 39 bytesRepeat
: 15 bytesAddress
: 31 bytesProjection
: 31 bytesDiscriminant
: 7 bytesLen
: 7 bytesNullaryOp
: 31 bytesUnaryOp
: 7 bytesBinaryOp
: 11 bytesCheckedBinaryOp
: 11 bytesCast
: 23 bytes