Enum IndirectMode 

pub enum IndirectMode {
    Pointer,
    OnStack,
    AmdgpuKernelArg,
}

Different modes in which indirect arguments can be passed.

Variants

Pointer

Passed as a normal pointer, nothing special.

OnStack

The value should be passed at a fixed stack offset in accordance to the ABI rather than passed using a pointer. This corresponds to the byval LLVM argument attribute. The byval argument will use a byte array with the same size as the Rust type (which ensures that padding is preserved and that we do not rely on LLVM’s struct layout), and will use the alignment specified in attrs.pointee_align (if Some) or the type’s alignment (if None). This means that the alignment will not always match the Rust type’s alignment; see documentation of pass_by_stack_offset for more info.

AmdgpuKernelArg

AmdgpuKernelArg behaves similar to OnStack except that the pointer does not necessarily point to the stack, no extra copy is made, and the passed argument should not be modified. This corresponds to the byref LLVM argument attribute.

Trait Implementations

impl Clone for IndirectMode

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for IndirectMode

impl Debug for IndirectMode

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

Formats the value using the given formatter.

impl Eq for IndirectMode

impl Hash for IndirectMode

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for IndirectMode

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

Equality operator ==.

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

Inequality operator !=.

impl StableHash for IndirectMode

fn stable_hash<__Hcx: StableHashCtxt>( &self, __hcx: &mut __Hcx, __hasher: &mut StableHasher, )

impl StructuralPartialEq for IndirectMode

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: 1 byte

Size for each variant:

• Pointer: 0 bytes
• OnStack: 0 bytes
• AmdgpuKernelArg: 0 bytes