package staticinit

import "cmd/compile/internal/staticinit"

Index ¶

• Variables
• func AddKeepRelocations()
• func AnySideEffects(n ir.Node) bool
• func OutlineMapInits(stmts []ir.Node) ([]ir.Node, []*ir.Func)
• func StaticLoc(n ir.Node) (name *ir.Name, offset int64, ok bool)
• func StaticName(t *types.Type) *ir.Name
• type Entry
• type Plan
• type Schedule
• func (s *Schedule) StaticAssign(l *ir.Name, loff int64, r ir.Node, typ *types.Type) bool
• func (s *Schedule) StaticInit(n ir.Node)

Variables ¶

var MapInitToVar map[*ir.Func]*ir.Name

MapInitToVar is the inverse of VarToMapInit; it maintains a mapping from a compiler-generated init function to the map the function is initializing.

Functions ¶

func AddKeepRelocations ¶

func AddKeepRelocations()

AddKeepRelocations adds a dummy "R_KEEP" relocation from each global map variable V to its associated outlined init function. These relocation ensure that if the map var itself is determined to be reachable at link time, we also mark the init function as reachable.

func AnySideEffects ¶

func AnySideEffects(n ir.Node) bool

AnySideEffects reports whether n contains any operations that could have observable side effects.

func OutlineMapInits ¶

func OutlineMapInits(stmts []ir.Node) ([]ir.Node, []*ir.Func)

OutlineMapInits walks through a list of init statements (candidates for inclusion in the package "init" function) and returns an updated list in which items corresponding to map variable initializations have been replaced with calls to outline "map init" functions (if legal/profitable). Return value is an updated list and a list of any newly generated "map init" functions.

func StaticLoc ¶

func StaticLoc(n ir.Node) (name *ir.Name, offset int64, ok bool)

StaticLoc returns the static address of n, if n has one, or else nil.

func StaticName ¶

func StaticName(t *types.Type) *ir.Name

StaticName returns a name backed by a (writable) static data symbol. Use readonlystaticname for read-only node.

Types ¶

type Entry ¶

type Entry struct {
	Xoffset int64   // struct, array only
	Expr    ir.Node // bytes of run-time computed expressions
}

type Plan ¶

type Plan struct {
	E []Entry
}

type Schedule ¶

type Schedule struct {
	// Out is the ordered list of dynamic initialization
	// statements.
	Out []ir.Node

	Plans map[ir.Node]*Plan
	Temps map[ir.Node]*ir.Name
}

An Schedule is used to decompose assignment statements into static and dynamic initialization parts. Static initializations are handled by populating variables' linker symbol data, while dynamic initializations are accumulated to be executed in order.

func (*Schedule) StaticAssign ¶

func (s *Schedule) StaticAssign(l *ir.Name, loff int64, r ir.Node, typ *types.Type) bool

func (*Schedule) StaticInit ¶

func (s *Schedule) StaticInit(n ir.Node)

StaticInit adds an initialization statement n to the schedule.

Source Files ¶

sched.go