[−][src]Struct cranelift_codegen::isa::RecipeConstraints

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,
}

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.

Methods

impl RecipeConstraints[src]

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

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

Trait Implementations

impl Clone for RecipeConstraints[src]

impl PartialEq<RecipeConstraints> for RecipeConstraints[src]

impl StructuralPartialEq for RecipeConstraints[src]

Auto Trait Implementations

Blanket Implementations

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

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<T> ToOwned for T where
    T: Clone, [src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

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

The type returned in the event of a conversion error.