// cond: c <= 56
	// result: (SRLI [56-c] (SLLI <typ.UInt64> [56] x))
	for {
		c := auxIntToInt64(v.AuxInt)
		if v_0.Op != OpRISCV64MOVBUreg {
			break
		}
		x := v_0.Args[0]
		if !(c <= 56) {
			break
		}
		v.reset(OpRISCV64SRLI)
		v.AuxInt = int64ToAuxInt(56 - c)
		v0 := b.NewValue0(v.Pos, OpRISCV64SLLI, typ.UInt64)
		v0.AuxInt = int64ToAuxInt(56)
		v0.AddArg(x)
		v.AddArg(v0)
		return true

	type testcase struct {
		uint64s []uint64
		int64s  []int64
		encoded []byte
	}
	for i, tc := range []testcase{
		{
			[]uint64{0, 1, 10, 100, 1000, 10000},
			[]int64{1000, 0, 1000},
			[]byte{10, 8, 0, 1, 10, 100, 232, 7, 144, 78, 18, 5, 232, 7, 0, 232, 7},
		},
		{
			[]uint64{10000},
			nil,
			[]byte{8, 144, 78},
		},
		{
			nil,
			[]int64{-10000},

		`state.encodeUint(uint64(len(x)))
		state.b.WriteString(x)`,
	},
	{
		"uint",
		"Uint",
		"0",
		`state.encodeUint(uint64(x))`,
	},
	{
		"uint16",
		"Uint16",
		"0",
		`state.encodeUint(uint64(x))`,
	},
	{
		"uint32",
		"Uint32",
		"0",
		`state.encodeUint(uint64(x))`,
	},
	{
		"uint64",
		"Uint64",
		"0",
		`state.encodeUint(x)`,
	},
	{

	"unsafe"
)

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}
}

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint64(fd)
	k.Filter = int16(mode)
	k.Flags = uint16(flags)
}

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint64(length)
}

	case int:
		return strconv.FormatInt(int64(v), 10)
	case int8:
		return strconv.FormatInt(int64(v), 10)
	case int16:
		return strconv.FormatInt(int64(v), 10)
	case int32:
		return strconv.FormatInt(int64(v), 10)
	case int64:
		return strconv.FormatInt(v, 10)
	case uint:
		return strconv.FormatUint(uint64(v), 10)
	case uint8:
		return strconv.FormatUint(uint64(v), 10)
	case uint16:

	msghdr.Controllen = uint64(length)
}

func (cmsg *Cmsghdr) SetLen(length int) {
	cmsg.Len = uint64(length)
}

//sys	syncFileRange2(fd int, flags int, off int64, n int64) (err error) = SYS_SYNC_FILE_RANGE2

func SyncFileRange(fd int, off int64, n int64, flags int) error {
	// The sync_file_range and sync_file_range2 syscalls differ only in the
	// order of their arguments.
	return syncFileRange2(fd, flags, off, n)

	_ = int64(1 /* ERROR "constant 18446744073709551615 overflows int64" */ <<64 - 1)

	_ = uint8(1 /* ERROR "constant 256 overflows uint8" */ << 8)
	_ = uint16(1 /* ERROR "constant 65536 overflows uint16" */ << 16)
	_ = uint32(1 /* ERROR "constant 4294967296 overflows uint32" */ << 32)
	_ = uint64(1 /* ERROR "constant 18446744073709551616 overflows uint64" */ << 64)
)

func _[P int8 | uint8]() {

// license that can be found in the LICENSE file.

package runtime_test

import (
	"testing"
)

var res int64
var ures uint64

func TestFloatTruncation(t *testing.T) {
	testdata := []struct {
		input      float64
		convInt64  int64
		convUInt64 uint64
		overflow   bool
	}{
		// max +- 1
		{
			input:      0x7fffffffffffffff,
			convInt64:  -0x8000000000000000,

}

func TestNoRaceAtomicLoadInt64(t *testing.T) {
	var x int32
	_ = x
	var s int64
	go func() {
		x = 2
		atomic.AddInt64(&s, 1)
	}()
	for atomic.LoadInt64(&s) != 1 {
		runtime.Gosched()
	}
	x = 1
}

func TestNoRaceAtomicCASCASUInt64(t *testing.T) {
	var x int64
	_ = x
	var s uint64
	go func() {
		x = 2
		if !atomic.CompareAndSwapUint64(&s, 0, 1) {
			panic("")
		}

type szD struct {
	name string
	sn   string
	u    []uint64
	i    []int64
}

var szs []szD = []szD{
	szD{name: "uint64", sn: "64", u: []uint64{0, 1, 4294967296, 0xffffFFFFffffFFFF}},
	szD{name: "int64", sn: "64", i: []int64{-0x8000000000000000, -0x7FFFFFFFFFFFFFFF,
		-4294967296, -1, 0, 1, 4294967296, 0x7FFFFFFFFFFFFFFE, 0x7FFFFFFFFFFFFFFF}},

	szD{name: "uint32", sn: "32", u: []uint64{0, 1, 4294967295}},