argLen:            1,
		rematerializeable: true,
		reg: regInfo{
			outputs: []outputInfo{
				{0, 239}, // AX CX DX BX BP SI DI
			},
		},
	},
	{
		name:           "LoweredNilCheck",
		argLen:         2,
		clobberFlags:   true,
		nilCheck:       true,
		faultOnNilArg0: true,
		reg: regInfo{
			inputs: []inputInfo{
				{0, 255}, // AX CX DX BX SP BP SI DI
			},
		},

// calls
(StaticCall  ...) => (CALLstatic  ...)
(ClosureCall ...) => (CALLclosure ...)
(InterCall   ...) => (CALLinter   ...)
(TailCall    ...) => (CALLtail    ...)

// checks
(NilCheck ...) => (LoweredNilCheck ...)
(IsNonNil ptr) => (NotEqual (CMPconst [0] ptr))
(IsInBounds      idx len) => (LessThanU  (CMP idx len))
(IsSliceInBounds idx len) => (LessEqualU (CMP idx len))

// pseudo-ops