Struct cranelift_codegen::isa::RecipeConstraints

source · [−]

pub struct RecipeConstraints {
    pub ins: &'static [OperandConstraint],
    pub outs: &'static [OperandConstraint],
    pub fixed_ins: bool,
    pub fixed_outs: bool,
    pub tied_ops: bool,
    pub clobbers_flags: bool,
}

Expand description

Value operand constraints for an encoding recipe.

Fields

ins: &'static [OperandConstraint]

Constraints for the instruction’s fixed value operands.

If the instruction takes a variable number of operands, the register constraints for those operands must be computed dynamically.

For branches and jumps, block arguments must match the expectations of the destination block.
For calls and returns, the calling convention ABI specifies constraints.

outs: &'static [OperandConstraint]

Constraints for the instruction’s fixed results.

If the instruction produces a variable number of results, it’s probably a call and the constraints must be derived from the calling convention ABI.

fixed_ins: bool

Are any of the input constraints FixedReg or FixedTied?

fixed_outs: bool

Are any of the output constraints FixedReg or FixedTied?

tied_ops: bool

Are any of the input/output constraints Tied (but not FixedTied)?

clobbers_flags: bool

Does this instruction clobber the CPU flags?

When true, SSA values of type iflags or fflags can not be live across the instruction.

Implementations

impl RecipeConstraints

pub fn satisfied(
    &self,
    inst: Inst,
    divert: &RegDiversions,
    func: &Function
) -> bool

Check that these constraints are satisfied by the operands on inst.

Trait Implementations

impl Clone for RecipeConstraints

fn clone(&self) -> RecipeConstraints

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

impl PartialEq<RecipeConstraints> for RecipeConstraints

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

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

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

This method tests for !=.

impl StructuralPartialEq for RecipeConstraints

Auto Trait Implementations

impl RefUnwindSafe for RecipeConstraints

impl Send for RecipeConstraints

impl Sync for RecipeConstraints

impl Unpin for RecipeConstraints

impl UnwindSafe for RecipeConstraints

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

pub fn into(self) -> U

Calls U::from(self).

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

impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T

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

pub fn clone_into(&self, target: &mut T)

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

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

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.