return C_EXTREG
	case r >= REG_SPECIAL:
		return C_SPR
	}
	return C_GOK
}

// con32class reclassifies the constant of 32-bit instruction. Because the constant type is 32-bit,
// but saved in Offset which type is int64, con32class treats it as uint32 type and reclassifies it.
func (c *ctxt7) con32class(a *obj.Addr) int {
	v := uint32(a.Offset)
	// For 32-bit instruction with constant, rewrite