Enum cranelift_codegen::ir::ArgumentExtension
source · [−]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
sourceimpl Clone for ArgumentExtension
impl Clone for ArgumentExtension
sourcefn clone(&self) -> ArgumentExtension
fn clone(&self) -> ArgumentExtension
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for ArgumentExtension
impl Debug for ArgumentExtension
sourceimpl Hash for ArgumentExtension
impl Hash for ArgumentExtension
impl Copy for ArgumentExtension
impl Eq for ArgumentExtension
impl StructuralEq for ArgumentExtension
impl StructuralPartialEq for ArgumentExtension
Auto Trait Implementations
impl RefUnwindSafe for ArgumentExtension
impl Send for ArgumentExtension
impl Sync for ArgumentExtension
impl Unpin for ArgumentExtension
impl UnwindSafe for ArgumentExtension
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
sourcefn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to key
and return true
if they are equal.
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more