for i, p := range inst.Prefix {
			switch p &^ PrefixIgnored {
			case PrefixData16, PrefixData32, PrefixCS, PrefixDS, PrefixES, PrefixSS:
				inst.Prefix[i] |= PrefixImplicit
			}
			if p.IsREX() {
				inst.Prefix[i] |= PrefixImplicit
			}
			if p.IsVEX() {
				if p == PrefixVEX3Bytes {
					inst.Prefix[i+2] |= PrefixImplicit
				}
				inst.Prefix[i] |= PrefixImplicit
				inst.Prefix[i+1] |= PrefixImplicit
			}
		}
	}

			implicitData = true
		}
	}
	for _, p := range inst.Prefix {
		if p == 0 || p.IsVEX() {
			break
		}
		if p&PrefixImplicit != 0 {
			continue
		}
		switch p &^ (PrefixIgnored | PrefixInvalid) {
		default:
			if p.IsREX() {
				if p&0xFF == PrefixREX {
					prefix += "rex "
				} else {
					prefix += "rex." + p.String()[4:] + " "
				}
				break

			for j := 0; j < n; j++ {
				prefix := Prefix(decoder[pc+2*j])
				if prefix.IsREX() {
					rexUsed |= prefix
					if rex&prefix == prefix {
						pc = int(decoder[pc+2*j+1])
						continue Decode
					}
					continue
				}
				ok := false
				if prefix == 0 {
					ok = true
				} else if prefix.IsREX() {
					rexUsed |= prefix
					if rex&prefix == prefix {
						ok = true
					}