(StructSelect [0] (IData x)) => (IData x)

(StructSelect (StructMake1 x)) => x
(StructSelect [0] (StructMake2 x _)) => x
(StructSelect [1] (StructMake2 _ x)) => x
(StructSelect [0] (StructMake3 x _ _)) => x
(StructSelect [1] (StructMake3 _ x _)) => x
(StructSelect [2] (StructMake3 _ _ x)) => x
(StructSelect [0] (StructMake4 x _ _ _)) => x
(StructSelect [1] (StructMake4 _ x _ _)) => x
(StructSelect [2] (StructMake4 _ _ x _)) => x

		}
		x := v_0.Args[1]
		v.copyOf(x)
		return true
	}
	// match: (StructSelect [0] (StructMake3 x _ _))
	// result: x
	for {
		if auxIntToInt64(v.AuxInt) != 0 || v_0.Op != OpStructMake3 {
			break
		}
		x := v_0.Args[0]
		v.copyOf(x)
		return true
	}
	// match: (StructSelect [1] (StructMake3 _ x _))
	// result: x
	for {
		if auxIntToInt64(v.AuxInt) != 1 || v_0.Op != OpStructMake3 {

// struct operations
(StructSelect (StructMake1 x)) => x
(StructSelect [0] (StructMake2 x _)) => x
(StructSelect [1] (StructMake2 _ x)) => x
(StructSelect [0] (StructMake3 x _ _)) => x
(StructSelect [1] (StructMake3 _ x _)) => x
(StructSelect [2] (StructMake3 _ _ x)) => x
(StructSelect [0] (StructMake4 x _ _ _)) => x
(StructSelect [1] (StructMake4 _ x _ _)) => x
(StructSelect [2] (StructMake4 _ _ x _)) => x

	{name: "StructMake1", argLength: 1},                // arg0=field0.  Returns struct.
	{name: "StructMake2", argLength: 2},                // arg0,arg1=field0,field1.  Returns struct.
	{name: "StructMake3", argLength: 3},                // arg0..2=field0..2.  Returns struct.
	{name: "StructMake4", argLength: 4},                // arg0..3=field0..3.  Returns struct.

		x := v_0.Args[1]
		v.copyOf(x)
		return true
	}
	// match: (StructSelect [0] (StructMake3 x _ _))
	// result: x
	for {
		if auxIntToInt64(v.AuxInt) != 0 || v_0.Op != OpStructMake3 {
			break
		}
		x := v_0.Args[0]
		v.copyOf(x)
		return true
	}
	// match: (StructSelect [1] (StructMake3 _ x _))
	// result: x
	for {

	},
	{
		name:    "StructMake1",
		argLen:  1,
		generic: true,
	},
	{
		name:    "StructMake2",
		argLen:  2,
		generic: true,
	},
	{
		name:    "StructMake3",
		argLen:  3,
		generic: true,
	},
	{
		name:    "StructMake4",
		argLen:  4,
		generic: true,
	},
	{
		name:    "StructSelect",
		auxType: auxInt64,