SYS_ADJTIME              = 421 // { int|sys|50|adjtime(const struct timeval *delta, struct timeval *olddelta); }
	SYS_FUTIMES              = 423 // { int|sys|50|futimes(int fd, const struct timeval *tptr); }
	SYS_LUTIMES              = 424 // { int|sys|50|lutimes(const char *path, const struct timeval *tptr); }

	SYS_ADJTIME              = 421 // { int|sys|50|adjtime(const struct timeval *delta, struct timeval *olddelta); }
	SYS_FUTIMES              = 423 // { int|sys|50|futimes(int fd, const struct timeval *tptr); }
	SYS_LUTIMES              = 424 // { int|sys|50|lutimes(const char *path, const struct timeval *tptr); }

(Load <t> ptr mem) && (is32BitInt(t) && !t.IsSigned()) => (MOVWUload ptr mem)
(Load <t> ptr mem) && (is64BitInt(t) || isPtr(t))      => (MOVDload  ptr mem)
(Load <t> ptr mem) &&  is32BitFloat(t)                 => (FMOVWload ptr mem)
(Load <t> ptr mem) &&  is64BitFloat(t)                 => (FMOVDload ptr mem)

// Stores
(Store {t} ptr val mem) && t.Size() == 1 => (MOVBstore ptr val mem)

// Lowering loads
(Load <t> ptr mem) && (is64BitInt(t) || isPtr(t)) => (MOVQload ptr mem)
(Load <t> ptr mem) && is32BitInt(t) => (MOVLload ptr mem)
(Load <t> ptr mem) && is16BitInt(t) => (MOVWload ptr mem)
(Load <t> ptr mem) && (t.IsBoolean() || is8BitInt(t)) => (MOVBload ptr mem)
(Load <t> ptr mem) && is32BitFloat(t) => (MOVSSload ptr mem)
(Load <t> ptr mem) && is64BitFloat(t) => (MOVSDload ptr mem)

// Lowering stores

	switch v.kind() {
	case Bool:
		*(*bool)(v.ptr) = false
	case Int:
		*(*int)(v.ptr) = 0
	case Int8:
		*(*int8)(v.ptr) = 0
	case Int16:
		*(*int16)(v.ptr) = 0
	case Int32:
		*(*int32)(v.ptr) = 0
	case Int64:
		*(*int64)(v.ptr) = 0
	case Uint:
		*(*uint)(v.ptr) = 0
	case Uint8:
		*(*uint8)(v.ptr) = 0
	case Uint16:
		*(*uint16)(v.ptr) = 0
	case Uint32:
		*(*uint32)(v.ptr) = 0

//go:noescape
func Load8(ptr *uint8) uint8

//go:noescape
func Load64(ptr *uint64) uint64

// NO go:noescape annotation; *ptr escapes if result escapes (#31525)
func Loadp(ptr unsafe.Pointer) unsafe.Pointer

//go:noescape
func LoadAcq(ptr *uint32) uint32

//go:noescape
func LoadAcq64(ptr *uint64) uint64

//go:noescape
func LoadAcquintptr(ptr *uintptr) uintptr

//go:noescape

//	return *val;
TEXT ·Xadd64(SB), NOSPLIT, $0-24
	MOVD	ptr+0(FP), R4
	MOVD	delta+8(FP), R5
	LWSYNC
	LDAR	(R4), R3
	ADD	R5, R3
	STDCCC	R3, (R4)
	BNE	-3(PC)
	MOVD	R3, ret+16(FP)
	RET

// uint32 Xchg(ptr *uint32, new uint32)
// Atomically:
//	old := *ptr;
//	*ptr = new;
//	return old;
TEXT ·Xchg(SB), NOSPLIT, $0-20
	MOVD	ptr+0(FP), R4
	MOVW	new+8(FP), R5
	LWSYNC
	LWAR	(R4), R3

// void	Or8(byte volatile*, byte);
TEXT ·Or8(SB),NOSPLIT,$0-5
	MOVW	ptr+0(FP), R1
	MOVBU	val+4(FP), R2
	MOVW	$~3, R3	// Align ptr down to 4 bytes so we can use 32-bit load/store.
	AND	R1, R3
#ifdef GOARCH_mips
	// Big endian.  ptr = ptr ^ 3
	XOR	$3, R1
#endif
	AND	$3, R1, R4	// R4 = ((ptr & 3) * 8)
	SLL	$3, R4
	SLL	R4, R2, R2	// Shift val for aligned ptr. R2 = val << R4
	SYNC
try_or8:
	LL	(R3), R4	// R4 = *R3

(Load <t> ptr mem) && (t.IsBoolean() || (is8BitInt(t) && !t.IsSigned())) => (MOVBZload ptr mem)
(Load <t> ptr mem) && is32BitFloat(t) => (FMOVSload ptr mem)
(Load <t> ptr mem) && is64BitFloat(t) => (FMOVDload ptr mem)

// Lowering stores
(Store {t} ptr val mem) && t.Size() == 8 &&  t.IsFloat() => (FMOVDstore ptr val mem)
(Store {t} ptr val mem) && t.Size() == 4 &&  t.IsFloat() => (FMOVSstore ptr val mem)

import _ "unsafe" // For linkname

//go:nosplit
func And32(ptr *uint32, val uint32) uint32 {
	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