Struct Row 

pub struct Row {
    pub opcode: Opcode,
    pub name: &'static str,
    pub rule: bool,
    pub lowering: Option<Lowering>,
    pub libcall: Option<&'static str>,
    pub nothing: Option<(&'static str, &'static str)>,
}

One operation at one mode, and the three answers.

Fields

opcode: Opcode

The opcode the row is about.

name: &'static str

What the operation at this mode is called, which is add.i64 or sitofp.i64.f64 or, for an operation with no mode, the opcode’s own name.

rule: bool

Whether a rule in this target’s table is written at that name.

lowering: Option<Lowering>

What rewrites it before selection, if anything does.

libcall: Option<&'static str>

The runtime function it becomes, if that is what happens to it.

nothing: Option<(&'static str, &'static str)>

Why nothing does any of the three, and the issue that closes it.

Implementations

impl Row

pub const fn answered(&self) -> bool

Whether this target can be asked to do this operation at this mode at all.

The question the whole table is for. A row with no answer is an operation that reaches the selector and is refused there, which turns a hole in the back end into a user’s problem.

Trait Implementations

impl Clone for Row

fn clone(&self) -> Row

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Row

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

Formats the value using the given formatter.