func (d TestFrontend) Fatalf(_ src.XPos, msg string, args ...interface{}) { d.t.Fatalf(msg, args...) }
func (d TestFrontend) Warnl(_ src.XPos, msg string, args ...interface{})  { d.t.Logf(msg, args...) }
func (d TestFrontend) Debug_checknil() bool                               { return false }

func (d TestFrontend) Func() *ir.Func {
	return d.f
}

var testTypes Types

func init() {

						// This is a redundant implicit nil check.
						// Logging in the style of the former compiler -- and omit line 1,
						// which is usually in generated code.
						if f.fe.Debug_checknil() && v.Pos.Line() > 1 {
							f.Warnl(v.Pos, "removed nil check")
						}
						if v.Pos.IsStmt() == src.PosIsStmt { // About to lose a statement boundary
							pendingLines.add(v.Pos)
						}

	// Warnl writes compiler messages in the form expected by "errorcheck" tests
	Warnl(pos src.XPos, fmt_ string, args ...interface{})

	// Forwards the Debug flags from gc
	Debug_checknil() bool
}

type Frontend interface {
	Logger

	// StringData returns a symbol pointing to the given string's contents.
	StringData(string) *obj.LSym

(NilCheck ptr:(SelectN [0] call:(StaticLECall _ _)) _)
	&& isSameCall(call.Aux, "runtime.newobject")
	&& warnRule(fe.Debug_checknil(), v, "removed nil check")
	=> ptr

(NilCheck ptr:(OffPtr (SelectN [0] call:(StaticLECall _ _))) _)
	&& isSameCall(call.Aux, "runtime.newobject")
	&& warnRule(fe.Debug_checknil(), v, "removed nil check")
	=> ptr

// Addresses of globals are always non-nil.

	s.f.Frontend().Fatalf(s.peekPos(), msg, args...)
}
func (s *state) Warnl(pos src.XPos, msg string, args ...interface{}) { s.f.Warnl(pos, msg, args...) }
func (s *state) Debug_checknil() bool                                { return s.f.Frontend().Debug_checknil() }

func ssaMarker(name string) *ir.Name {
	return ir.NewNameAt(base.Pos, &types.Sym{Name: name}, nil)
}

var (
	// marker node for the memory variable

	// cond: isSameCall(call.Aux, "runtime.newobject") && warnRule(fe.Debug_checknil(), v, "removed nil check")
	// result: ptr
	for {
		ptr := v_0
		if ptr.Op != OpSelectN || auxIntToInt64(ptr.AuxInt) != 0 {
			break
		}
		call := ptr.Args[0]
		if call.Op != OpStaticLECall || len(call.Args) != 2 || !(isSameCall(call.Aux, "runtime.newobject") && warnRule(fe.Debug_checknil(), v, "removed nil check")) {
			break
		}