Enum rustc_target::spec::FramePointer

pub enum FramePointer {
    Always,
    NonLeaf,
    MayOmit,
}

Variants

Always

Forces the machine code generator to always preserve the frame pointers.

NonLeaf

Forces the machine code generator to preserve the frame pointers except for the leaf functions (i.e. those that don’t call other functions).

MayOmit

Allows the machine code generator to omit the frame pointers.

This option does not guarantee that the frame pointers will be omitted.

Implementations

impl FramePointer

pub fn ratchet(&mut self, rhs: FramePointer) -> FramePointer

It is intended that the “force frame pointer” transition is “one way” so this convenience assures such if used

Trait Implementations

impl Clone for FramePointer

fn clone(&self) -> FramePointer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FramePointer

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

Formats the value using the given formatter.

impl FromStr for FramePointer

type Err = ()

The associated error which can be returned from parsing.

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

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

impl Hash for FramePointer

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 FramePointer

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl ToJson for FramePointer

fn to_json(&self) -> Json

impl Copy for FramePointer

impl StructuralPartialEq for FramePointer

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:

• Always: 0 bytes
• NonLeaf: 0 bytes
• MayOmit: 0 bytes