return f.constVal(OpConst64F, t, int64(math.Float64bits(c)), true)
}

func (f *Func) ConstSlice(t *types.Type) *Value {
	return f.constVal(OpConstSlice, t, constSliceMagic, false)
}
func (f *Func) ConstInterface(t *types.Type) *Value {
	return f.constVal(OpConstInterface, t, constInterfaceMagic, false)
}
func (f *Func) ConstNil(t *types.Type) *Value {
	return f.constVal(OpConstNil, t, constNilMagic, false)
}

	{name: "Const32F", aux: "Float32"}, // value is math.Float64frombits(uint64(auxint)) and is exactly representable as float 32
	{name: "Const64F", aux: "Float64"}, // value is math.Float64frombits(uint64(auxint))
	{name: "ConstInterface"},           // nil interface
	{name: "ConstSlice"},               // nil slice

	// Constant-like things
	{name: "InitMem", zeroWidth: true},                               // memory input to the function.

}

// const* routines add a new const value to the entry block.
func (s *state) constSlice(t *types.Type) *ssa.Value {
	return s.f.ConstSlice(t)
}
func (s *state) constInterface(t *types.Type) *ssa.Value {
	return s.f.ConstInterface(t)
}
func (s *state) constNil(t *types.Type) *ssa.Value { return s.f.ConstNil(t) }
func (s *state) constEmptyString(t *types.Type) *ssa.Value {
	return s.f.ConstEmptyString(t)
}

(ConstSlice) && config.PtrSize == 8 =>
  (SliceMake
    (ConstNil <v.Type.Elem().PtrTo()>)
    (Const64 <typ.Int> [0])
    (Const64 <typ.Int> [0]))

// interface ops
(ConstInterface) =>
  (IMake
    (ConstNil <typ.Uintptr>)
    (ConstNil <typ.BytePtr>))

(NilCheck ptr:(GetG mem) mem) => ptr

(If (Not cond) yes no) => (If cond no yes)

			v.AddArg(x)
			return true
		}
		break
	}
	return false
}
func rewriteValuegeneric_OpConstInterface(v *Value) bool {
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (ConstInterface)
	// result: (IMake (ConstNil <typ.Uintptr>) (ConstNil <typ.BytePtr>))
	for {
		v.reset(OpIMake)
		v0 := b.NewValue0(v.Pos, OpConstNil, typ.Uintptr)
		v1 := b.NewValue0(v.Pos, OpConstNil, typ.BytePtr)

		auxType: auxFloat32,
		argLen:  0,
		generic: true,
	},
	{
		name:    "Const64F",
		auxType: auxFloat64,
		argLen:  0,
		generic: true,
	},
	{
		name:    "ConstInterface",
		argLen:  0,
		generic: true,
	},
	{
		name:    "ConstSlice",
		argLen:  0,
		generic: true,
	},
	{
		name:      "InitMem",
		argLen:    0,