Enum cranelift_codegen::ir::LibCall

pub enum LibCall {
    Probestack,
    CeilF32,
    CeilF64,
    FloorF32,
    FloorF64,
    TruncF32,
    TruncF64,
    NearestF32,
    NearestF64,
    Memcpy,
    Memset,
    Memmove,
}

The name of a runtime library routine.

Runtime library calls are generated for Cranelift IR instructions that don't have an equivalent ISA instruction or an easy macro expansion. A LibCall is used as a well-known name to refer to the runtime library routine. This way, Cranelift doesn't have to know about the naming convention in the embedding VM's runtime library.

This list is likely to grow over time.

Variants

Probestack

probe for stack overflow. These are emitted for functions which need when the probestack_enabled setting is true.

CeilF32

ceil.f32

CeilF64

ceil.f64

FloorF32

floor.f32

FloorF64

floor.f64

TruncF32

trunc.f32

TruncF64

frunc.f64

NearestF32

nearest.f32

NearestF64

nearest.f64

Memcpy

libc.memcpy

Memset

libc.memset

Memmove

libc.memmove

Methods

impl LibCall

pub fn for_inst(opcode: Opcode, ctrl_type: Type) -> Option<Self>

Get the well-known library call name to use as a replacement for an instruction with the given opcode and controlling type variable.

Returns None if no well-known library routine name exists for that instruction.

Trait Implementations

impl Clone for LibCall

fn clone(&self) -> LibCall

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for LibCall

impl Debug for LibCall

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

Formats the value using the given formatter.

impl Display for LibCall

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

Formats the value using the given formatter.

impl PartialEq<LibCall> for LibCall

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

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

#[must_use]

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

This method tests for !=.

impl Eq for LibCall

impl FromStr for LibCall

type Err = ()

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.