go/src/cmd/compile/internal/escape/expr.go

// expr models evaluating an expression n and flowing the result into
// hole k.
func (e *escape) expr(k hole, n ir.Node) { … }

func (e *escape) exprSkipInit(k hole, n ir.Node) { … }

// unsafeValue evaluates a uintptr-typed arithmetic expression looking
// for conversions from an unsafe.Pointer.
func (e *escape) unsafeValue(k hole, n ir.Node) { … }

// discard evaluates an expression n for side-effects, but discards
// its value.
func (e *escape) discard(n ir.Node) { … }

func (e *escape) discards(l ir.Nodes) { … }

// spill allocates a new location associated with expression n, flows
// its address to k, and returns a hole that flows values to it. It's
// intended for use with most expressions that allocate storage.
func (e *escape) spill(k hole, n ir.Node) hole { … }