arm64SpecialOperand = map[string]arm64.SpecialOperand{}
		for opd := arm64.SPOP_BEGIN; opd < arm64.SPOP_END; opd++ {
			arm64SpecialOperand[opd.String()] = opd
		}

		// Handle some special cases.
		specialMapping := map[string]arm64.SpecialOperand{
			// The internal representation of CS(CC) and HS(LO) are the same.
			"CS": arm64.SPOP_HS,
			"CC": arm64.SPOP_LO,
		}
		for s, opd := range specialMapping {
			arm64SpecialOperand[s] = opd

		// Generate mapping when function is first called.
		riscv64SpecialOperand = map[string]riscv.SpecialOperand{}
		for opd := riscv.SPOP_BEGIN; opd < riscv.SPOP_END; opd++ {
			riscv64SpecialOperand[opd.String()] = opd
		}
	}
	if opd, ok := riscv64SpecialOperand[name]; ok {
		return opd
	}
	return riscv.SPOP_END
}

// RISCV64ValidateVectorType reports whether the given configuration is a
// valid vector type.

		switch p.arch.Family {
		case sys.ARM64:
			if opd := arch.ARM64SpecialOperand(name); opd != arm64.SPOP_END {
				a.Type = obj.TYPE_SPECIAL
				a.Offset = int64(opd)
			}
		case sys.RISCV64:
			if opd := arch.RISCV64SpecialOperand(name); opd != riscv.SPOP_END {
				a.Type = obj.TYPE_SPECIAL
				a.Offset = int64(opd)
			}
		}

		if a.Type != obj.TYPE_SPECIAL {