Instead, deferred functions are invoked immediately before
the surrounding function returns, in the reverse order
they were deferred. That is, if the surrounding function
returns through an explicit <a href="#Return_statements">return statement</a>,
deferred functions are executed <i>after</i> any result parameters are set
by that return statement but <i>before</i> the function returns to its caller.
If a deferred function value evaluates

	e := t.Kind()
	switch e {
	default:
		return e
	case types.TINT:
		if s.config.PtrSize == 8 {
			return types.TINT64
		}
		return types.TINT32
	case types.TUINT:
		if s.config.PtrSize == 8 {
			return types.TUINT64
		}
		return types.TUINT32
	case types.TUINTPTR:
		if s.config.PtrSize == 8 {
			return types.TUINT64
		}
		return types.TUINT32
	}
}

	case OpMul8:
		v.Op = OpPPC64MULLW
		return true
	case OpNeg16:
		v.Op = OpPPC64NEG
		return true
	case OpNeg32:
		v.Op = OpPPC64NEG
		return true
	case OpNeg32F:
		v.Op = OpPPC64FNEG
		return true
	case OpNeg64:
		v.Op = OpPPC64NEG
		return true
	case OpNeg64F:
		v.Op = OpPPC64FNEG
		return true
	case OpNeg8:
		v.Op = OpPPC64NEG
		return true
	case OpNeq16:

	case OpDiv32u:
		return rewriteValueS390X_OpDiv32u(v)
	case OpDiv64:
		return rewriteValueS390X_OpDiv64(v)
	case OpDiv64F:
		v.Op = OpS390XFDIV
		return true
	case OpDiv64u:
		v.Op = OpS390XDIVDU
		return true
	case OpDiv8:
		return rewriteValueS390X_OpDiv8(v)
	case OpDiv8u:
		return rewriteValueS390X_OpDiv8u(v)
	case OpEq16:
		return rewriteValueS390X_OpEq16(v)
	case OpEq32: