}

	var z uint32
	z = 1
	if !atomic.Cas(&z, 1, 2) {
		throw("cas1")
	}
	if z != 2 {
		throw("cas2")
	}

	z = 4
	if atomic.Cas(&z, 5, 6) {
		throw("cas3")
	}
	if z != 4 {
		throw("cas4")
	}

	z = 0xffffffff
	if !atomic.Cas(&z, 0xffffffff, 0xfffffffe) {
		throw("cas5")
	}
	if z != 0xfffffffe {
		throw("cas6")
	}

	m = [4]byte{1, 1, 1, 1}

     *
     * @param outputType The type to cast the input to
     * @param object The object to be cast (must not be {@code null})
     * @param <O> The type to be cast to
     * @param <I> The type of the object to be vast
     * @return The input object, cast to the output type
     */
    public static <O, I> O cast(Class<O> outputType, I object) {
        try {

		} else if cas.elem != nil {
			raceWriteObjectPC(c.elemtype, cas.elem, casePC(casi), chanrecvpc)
		}
	}
	if msanenabled {
		if casi < nsends {
			msanread(cas.elem, c.elemtype.Size_)
		} else if cas.elem != nil {
			msanwrite(cas.elem, c.elemtype.Size_)
		}
	}
	if asanenabled {
		if casi < nsends {
			asanread(cas.elem, c.elemtype.Size_)
		} else if cas.elem != nil {

	MOVQ	new+16(FP), CX
	LOCK
	CMPXCHGQ	CX, 0(BX)
	SETEQ	ret+24(FP)
	RET

TEXT ·Casint32(SB), NOSPLIT, $0-17
	JMP	·Cas(SB)

TEXT ·Casint64(SB), NOSPLIT, $0-25
	JMP	·Cas64(SB)

TEXT ·Casuintptr(SB), NOSPLIT, $0-25
	JMP	·Cas64(SB)

TEXT ·CasRel(SB), NOSPLIT, $0-17
	JMP	·Cas(SB)

// uint32 Xadd(uint32 volatile *val, int32 delta)
// Atomically:
//	*val += delta;
//	return *val;

TEXT ·LoadAcquintptr(SB),NOSPLIT|NOFRAME,$0-8
	B 	·Load(SB)

TEXT ·Casint32(SB),NOSPLIT,$0-13
	B	·Cas(SB)

TEXT ·Casint64(SB),NOSPLIT,$-4-21
	B	·Cas64(SB)

TEXT ·Casuintptr(SB),NOSPLIT,$0-13
	B	·Cas(SB)

TEXT ·Casp1(SB),NOSPLIT,$0-13
	B	·Cas(SB)

TEXT ·CasRel(SB),NOSPLIT,$0-13
	B	·Cas(SB)

TEXT ·Loadint32(SB),NOSPLIT,$0-8
	B	·Load(SB)

TEXT ·Loadint64(SB),NOSPLIT,$-4-12
	B	·Load64(SB)

//go:noescape
func Or64(ptr *uint64, val uint64) uint64

//go:noescape
func Anduintptr(ptr *uintptr, val uintptr) uintptr

//go:noescape
func Oruintptr(ptr *uintptr, val uintptr) uintptr

//go:noescape
func Cas64(ptr *uint64, old, new uint64) bool

//go:noescape
func CasRel(ptr *uint32, old, new uint32) bool

//go:noescape
func Store(ptr *uint32, val uint32)

//go:noescape
func Store8(ptr *uint8, val uint8)

//go:noescape
func Xchg(ptr *uint32, new uint32) uint32

//go:noescape
func Xchg64(ptr *uint64, new uint64) uint64

//go:noescape
func Xchguintptr(ptr *uintptr, new uintptr) uintptr

//go:noescape
func Cas64(ptr *uint64, old, new uint64) bool

//go:noescape

	BEQ	R7, cas_again
	MOVV	$1, R4
	MOVB	R4, ret+16(FP)
	DBAR
	RET
cas_fail:
	MOVV	$0, R4
	JMP	-4(PC)

// bool	cas64(uint64 *ptr, uint64 old, uint64 new)
// Atomically:
//	if(*ptr == old){
//		*ptr = new;
//		return 1;
//	} else {
//		return 0;
//	}
TEXT ·Cas64(SB), NOSPLIT, $0-25
	MOVV	ptr+0(FP), R4
	MOVV	old+8(FP), R5
	MOVV	new+16(FP), R6
	DBAR
cas64_again:
	MOVV	R6, R7
	LLV	(R4), R8

					cast = nil
				}
				a = nil
				next = tmpl
			case 'T':
				next = st.templateParam()
			case 'E':
				if a == nil {
					st.fail("expected prefix")
				}
				if cast != nil {
					var toTmpl *Template
					if castTempl, ok := cast.To.(*Template); ok {
						toTmpl = castTempl
					}
					st.setTemplate(cast, toTmpl)
				}
				return a
			case 'M':
				if a == nil {

	for {
		old := *ptr
		if Cas(ptr, old, old&val) {
			return old
		}
	}
}

//go:nosplit
func Or32(ptr *uint32, val uint32) uint32 {
	for {
		old := *ptr
		if Cas(ptr, old, old|val) {
			return old
		}
	}
}

//go:nosplit
func And64(ptr *uint64, val uint64) uint64 {
	for {
		old := *ptr
		if Cas64(ptr, old, old&val) {
			return old
		}
	}
}