pub enum ArgumentExtension {
    None,
    Uext,
    Sext,
}
Expand description

Function argument extension options.

On some architectures, small integer function arguments and/or return values are extended to the width of a general-purpose register.

This attribute specifies how an argument or return value should be extended if the platform and ABI require it. Because the frontend (CLIF generator) does not know anything about the particulars of the target’s ABI, and the CLIF should be platform-independent, these attributes specify how to extend (according to the signedness of the original program) rather than whether to extend.

Variants

None

No extension, high bits are indeterminate.

Uext

Unsigned extension: high bits in register are 0.

Sext

Signed extension: high bits in register replicate sign bit.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

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Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Compare self to key and return true if they are equal.

Returns the argument unchanged.

Calls U::from(self).

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

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.