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Force

Enum Force 

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pub enum Force {
    Table,
    Tree,
    Walk,
}
Expand description

A shape forced on every switch, which is what -Zswitch= asks for.

For measuring and for nothing else. Section 24.7 asks what each shape costs on a hot switch, and the only way to know what a table would have cost where a tree was chosen is to build the table. A bit test is not one of these, since it holds three destinations inside one word and a switch hot enough to be worth measuring is neither.

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Table

One jump table over every case, when their span is at most FORCED_CELLS.

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Tree

A binary search all the way down to single clusters, with no table and no bit test.

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Walk

Every cluster tested one after another, with no table and no bit test.

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impl Force

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pub fn named(name: &str) -> Option<Self>

The shape a -Zswitch= argument names, which is table, tree or walk.

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impl Clone for Force

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for Force

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impl Debug for Force

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Eq for Force

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impl PartialEq for Force

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for Force

Auto Trait Implementations§

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impl Freeze for Force

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impl RefUnwindSafe for Force

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impl Send for Force

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impl Sync for Force

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impl Unpin for Force

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impl UnsafeUnpin for Force

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impl UnwindSafe for Force

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.