Struct cranelift_codegen::ir::AbiParam

pub struct AbiParam {
    pub value_type: Type,
    pub purpose: ArgumentPurpose,
    pub extension: ArgumentExtension,
}

Function parameter or return value descriptor.

This describes the value type being passed to or from a function along with flags that affect how the argument is passed.

Fields

value_type: Type

Type of the argument value.

purpose: ArgumentPurpose

Special purpose of argument, or Normal.

extension: ArgumentExtension

Method for extending argument to a full register.

Implementations

impl AbiParam

pub fn new(vt: Type) -> Self

Create a parameter with default flags.

Examples found in repository

src/ir/libcall.rs (line 128)

    pub fn signature(&self, call_conv: CallConv) -> Signature {
        use types::*;
        let mut sig = Signature::new(call_conv);

        match self {
            LibCall::CeilF32 | LibCall::FloorF32 | LibCall::TruncF32 | LibCall::NearestF32 => {
                sig.params.push(AbiParam::new(F32));
                sig.returns.push(AbiParam::new(F32));
            }
            LibCall::TruncF64 | LibCall::FloorF64 | LibCall::CeilF64 | LibCall::NearestF64 => {
                sig.params.push(AbiParam::new(F64));
                sig.returns.push(AbiParam::new(F64));
            }
            LibCall::FmaF32 | LibCall::FmaF64 => {
                let ty = if *self == LibCall::FmaF32 { F32 } else { F64 };

                sig.params.push(AbiParam::new(ty));
                sig.params.push(AbiParam::new(ty));
                sig.params.push(AbiParam::new(ty));
                sig.returns.push(AbiParam::new(ty));
            }
            LibCall::Probestack
            | LibCall::Memcpy
            | LibCall::Memset
            | LibCall::Memmove
            | LibCall::Memcmp
            | LibCall::ElfTlsGetAddr
            | LibCall::ElfTlsGetOffset => unimplemented!(),
        }

        sig
    }

pub fn special(vt: Type, purpose: ArgumentPurpose) -> Self

Create a special-purpose parameter that is not (yet) bound to a specific register.

pub fn uext(self) -> Self

Convert self to a parameter with the uext flag set.

pub fn sext(self) -> Self

Convert self to a parameter type with the sext flag set.

Trait Implementations

impl Clone for AbiParam

fn clone(&self) -> AbiParam

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AbiParam

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

Formats the value using the given formatter.

impl Display for AbiParam

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

Formats the value using the given formatter.

impl Hash for AbiParam

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<AbiParam> for AbiParam

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for AbiParam

impl Eq for AbiParam

impl StructuralEq for AbiParam

impl StructuralPartialEq for AbiParam