C_SAUTO  /* -0xfff to 0xfff */
	C_LAUTO

	C_HOREG
	C_FOREG
	C_HFOREG
	C_SOREG
	C_ROREG
	C_SROREG /* both nil and R */
	C_LOREG

	C_PC
	C_SP
	C_HREG

	C_ADDR /* reference to relocatable address */

	// TLS "var" in local exec mode: will become a constant offset from
	// thread local base that is ultimately chosen by the program linker.
	C_TLS_LE

	C_LECON
	C_DACON /* $n(REG) where int32 < n */
	C_STCON /* $tlsvar */
	C_SBRA
	C_LBRA
	C_SAUTO
	C_LAUTO
	C_SEXT
	C_LEXT
	C_ZOREG
	C_SOREG
	C_LOREG
	C_GOK
	C_ADDR
	C_TLS
	C_TEXTSIZE

	C_NCLASS /* must be the last */
)

const (
	AABSD = obj.ABaseMIPS + obj.A_ARCHSPECIFIC + iota
	AABSF
	AABSW
	AADD
	AADDD
	AADDF
	AADDU
	AADDW

	{Optab: Optab{as: AMOVB, a1: C_ADDR, a6: C_REG, type_: 75, size: 12}, minGOPPC64: 10, pfxsize: 12},
	{Optab: Optab{as: AMOVB, a1: C_REG, a6: C_ADDR, type_: 74, size: 8}, minGOPPC64: 10, pfxsize: 8},

	{Optab: Optab{as: AMOVBZ, a1: C_LOREG, a6: C_REG, type_: 36, size: 8}, minGOPPC64: 10, pfxsize: 8},
	{Optab: Optab{as: AMOVBZ, a1: C_ADDR, a6: C_REG, type_: 75, size: 8}, minGOPPC64: 10, pfxsize: 8},

	{i: 35, as: AMOVDBR, a1: C_REG, a6: C_LOREG},
	{i: 35, as: AMOVHBR, a1: C_REG, a6: C_LOREG},
	{i: 74, as: AMOVD, a1: C_REG, a6: C_ADDR},
	{i: 74, as: AMOVW, a1: C_REG, a6: C_ADDR},
	{i: 74, as: AMOVWZ, a1: C_REG, a6: C_ADDR},
	{i: 74, as: AMOVBZ, a1: C_REG, a6: C_ADDR},
	{i: 74, as: AMOVB, a1: C_REG, a6: C_ADDR},

	// load
	{i: 36, as: AMOVD, a1: C_LAUTO, a6: C_REG},
	{i: 36, as: AMOVW, a1: C_LAUTO, a6: C_REG},

	C_TLS_LE   // TLS - local exec model (for executables)
	C_TLS_IE   // TLS - initial exec model (for shared libraries loaded at program startup)
	C_GOK      // general address
	C_ADDR     // relocation for extern or static symbols (loads and stores)
	C_SYMADDR  // relocation for extern or static symbols (address taking)
	C_GOTADDR  // GOT slot for a symbol in -dynlink mode
	C_TEXTSIZE // text size
	C_ANY

	C_FPSCR    /* The fpscr register */
	C_LR       /* The link register */
	C_CTR      /* The count register */
	C_ANY      /* Any argument */
	C_GOK      /* A non-matched argument */
	C_ADDR     /* A symbolic memory location */
	C_TLS_LE   /* A thread local, local-exec, type memory arg */
	C_TLS_IE   /* A thread local, initial-exec, type memory arg */
	C_TEXTSIZE /* An argument with Type obj.TYPE_TEXTSIZE */

	case C_ZCON,
		C_SCON,
		C_ADD0CON,
		C_AND0CON,
		C_ADDCON,
		C_ANDCON,
		C_UCON,
		C_LCON,
		C_NONE,
		C_SBRA,
		C_LBRA,
		C_ADDR,
		C_TEXTSIZE:
		break

	case C_HI,
		C_LO:
		s.set.cc |= E_HILO

	case C_FCREG:
		s.set.cc |= E_FCR

	case C_MREG:
		s.set.cc |= E_MCR

	case C_ZOREG,

	C_UOREG4K
	C_UOREG8K_16
	C_UOREG8K_8
	C_UOREG8K_4
	C_UOREG8K
	C_UOREG16K_16
	C_UOREG16K_8
	C_UOREG16K
	C_UOREG32K_16
	C_UOREG32K
	C_UOREG64K
	C_LOREGPOOL
	C_LOREG

	C_ADDR // TODO(aram): explain difference from C_VCONADDR

	// The GOT slot for a symbol in -dynlink mode.
	C_GOTADDR

	// TLS "var" in local exec mode: will become a constant offset from

		}

	case _Recover:
		// recover() interface{}
		x.mode = value
		x.typ = &emptyInterface
		if check.recordTypes() {
			check.recordBuiltinType(call.Fun, makeSig(x.typ))
		}

	case _Add:
		// unsafe.Add(ptr unsafe.Pointer, len IntegerType) unsafe.Pointer
		check.verifyVersionf(call.Fun, go1_17, "unsafe.Add")

		check.assignment(x, Typ[UnsafePointer], "argument to unsafe.Add")
		if x.mode == invalid {

		}

	case _Recover:
		// recover() interface{}
		x.mode = value
		x.typ = &emptyInterface
		if check.recordTypes() {
			check.recordBuiltinType(call.Fun, makeSig(x.typ))
		}

	case _Add:
		// unsafe.Add(ptr unsafe.Pointer, len IntegerType) unsafe.Pointer
		check.verifyVersionf(call.Fun, go1_17, "unsafe.Add")

		check.assignment(x, Typ[UnsafePointer], "argument to unsafe.Add")
		if x.mode == invalid {