Struct rustc_codegen_llvm::coverageinfo::ffi::Counter

#[repr(C)]
pub struct Counter {
    pub kind: CounterKind,
    id: u32,
}

A reference to an instance of an abstract “counter” that will yield a value in a coverage report. Note that id has different interpretations, depending on the kind:

• For CounterKind::Zero, id is assumed to be 0
• For CounterKind::CounterValueReference, id matches the counter_id of the injected instrumentation counter (the index argument to the LLVM intrinsic instrprof.increment())
• For CounterKind::Expression, id is the index into the coverage map’s array of counter expressions.

Corresponds to struct llvm::coverage::Counter.

Must match the layout of LLVMRustCounter.

Fields

kind: CounterKind

id: u32

Implementations

impl Counter

pub(crate) const ZERO: Self = _

A Counter of kind Zero. For this counter kind, the id is not used.

pub fn counter_value_reference(counter_id: CounterId) -> Self

Constructs a new Counter of kind CounterValueReference.

pub(crate) fn expression(expression_id: ExpressionId) -> Self

Constructs a new Counter of kind Expression.

pub(crate) fn from_operand(operand: Operand) -> Self

Trait Implementations

impl Clone for Counter

fn clone(&self) -> Counter

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Counter

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

Formats the value using the given formatter.

impl Copy for Counter

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: 8 bytes