(MOV(D|W)loadidx ptr (MOVDconst [c]) mem) && ((is16Bit(c) && c%4 == 0) || (buildcfg.GOPPC64 >= 10 && is32Bit(c))) => (MOV(D|W)load [int32(c)] ptr mem)
(MOV(WZ|H|HZ|BZ)loadidx ptr (MOVDconst [c]) mem) && (is16Bit(c) || (buildcfg.GOPPC64 >= 10 && is32Bit(c))) => (MOV(WZ|H|HZ|BZ)load [int32(c)] ptr mem)
(MOV(D|W)loadidx (MOVDconst [c]) ptr mem) && ((is16Bit(c) && c%4 == 0) || (buildcfg.GOPPC64 >= 10 && is32Bit(c))) => (MOV(D|W)load [int32(c)] ptr mem)

	// match: (MOVBZloadidx ptr (MOVDconst [c]) mem)
	// cond: (is16Bit(c) || (buildcfg.GOPPC64 >= 10 && is32Bit(c)))
	// result: (MOVBZload [int32(c)] ptr mem)
	for {
		ptr := v_0
		if v_1.Op != OpPPC64MOVDconst {
			break
		}
		c := auxIntToInt64(v_1.AuxInt)
		mem := v_2
		if !(is16Bit(c) || (buildcfg.GOPPC64 >= 10 && is32Bit(c))) {
			break
		}
		v.reset(OpPPC64MOVBZload)

	Signo       int32
	siErrnoCode                // Two int32 fields, swapped on MIPS.
	_           [is64bit]int32 // Extra padding for 64-bit hosts only.

	// End of common part. Beginning of signal-specific part.

	Pid    int32
	Uid    uint32
	Status int32

	// Pad to 128 bytes.
	_ [128 - (6+is64bit)*4]byte
}

const (
	// Possible values for SiginfoChild.Code field.
	_CLD_EXITED    int32 = 1

(MOVHUloadidx ptr (MOVDconst [c]) mem) && is32Bit(c) => (MOVHUload [int32(c)] ptr mem)
(MOVHUloadidx (MOVDconst [c]) ptr mem) && is32Bit(c) => (MOVHUload [int32(c)] ptr mem)
(MOVHloadidx  ptr (MOVDconst [c]) mem) && is32Bit(c) => (MOVHload  [int32(c)] ptr mem)
(MOVHloadidx  (MOVDconst [c]) ptr mem) && is32Bit(c) => (MOVHload  [int32(c)] ptr mem)

	n := uint64(uint32(in))
	return n > 0 && n&(n-1) == 0
}

// is32Bit reports whether n can be represented as a signed 32 bit integer.
func is32Bit(n int64) bool {
	return n == int64(int32(n))
}

// is16Bit reports whether n can be represented as a signed 16 bit integer.
func is16Bit(n int64) bool {
	return n == int64(int16(n))
}

// is8Bit reports whether n can be represented as a signed 8 bit integer.

	if _, err := io.Copy(outf, exef); err != nil {
		return err
	}

	// Locate the portion of the binary containing the load commands.
	cmdOffset := unsafe.Sizeof(exem.FileHeader)
	if is64bit := exem.Magic == macho.Magic64; is64bit {
		// mach_header_64 has one extra uint32.
		cmdOffset += unsafe.Sizeof(exem.Magic)
	}
	if _, err := outf.Seek(int64(cmdOffset), 0); err != nil {
		return err
	}

	// match: (ADDconst [off1] (MOVDaddr [off2] {sym} ptr))
	// cond: is32Bit(off1+int64(off2))
	// result: (MOVDaddr [int32(off1)+off2] {sym} ptr)
	for {
		off1 := auxIntToInt64(v.AuxInt)
		if v_0.Op != OpARM64MOVDaddr {
			break
		}
		off2 := auxIntToInt32(v_0.AuxInt)
		sym := auxToSym(v_0.Aux)
		ptr := v_0.Args[0]
		if !(is32Bit(off1 + int64(off2))) {
			break
		}
		v.reset(OpARM64MOVDaddr)

	textsect := exem.Section("__text")
	if textsect == nil {
		return fmt.Errorf("missing __text section")
	}

	cmdOffset := unsafe.Sizeof(exem.FileHeader)
	if is64bit := exem.Magic == macho.Magic64; is64bit {
		// mach_header_64 has one extra uint32.
		cmdOffset += unsafe.Sizeof(exem.Magic)
	}
	dwarfCmdOffset := uint32(cmdOffset) + exem.FileHeader.Cmdsz

	if n == 0 {
		panic("invalid argument to Uint64N")
	}
	return r.uint64n(n)
}

// uint64n is the no-bounds-checks version of Uint64N.
func (r *Rand) uint64n(n uint64) uint64 {
	if is32bit && uint64(uint32(n)) == n {
		return uint64(r.uint32n(uint32(n)))
	}
	if n&(n-1) == 0 { // n is power of two, can mask
		return r.Uint64() & (n - 1)
	}

	// Suppose we have a uint64 x uniform in the range [0,2⁶⁴)

		3: {"gopher", 0, ""},
		4: {"-", -1, "negative"},
		5: {"--", -102, "negative"},
		6: {string(make([]byte, 255)), int((^uint(0))/255 + 1), "overflow"},
	})

	const is64Bit = 1<<(^uintptr(0)>>63)/2 != 0
	if !is64Bit {
		return
	}

	runTestCases("64-bit", []testCase{
		0: {"-", maxInt, "out of range"},
	})
}

func runesEqual(a, b []rune) bool {
	if len(a) != len(b) {