got := foo(1)
	if want != got {
		panic(fmt.Sprintf("want %x, got %x", want, got))
	}
}

func foo(a int32) int32 {
	return shr1(int32(shr2(int64(0x14ff6e2207db5d1f), int(a))), 4)
}

func shr1(n int32, m int) int32 { return n >> uint(m) }

func shr2(n int64, m int) int64 {
	if m < 0 {
		m = -m
	}
	if m >= 64 {
		return n
	}

	return n >> uint(m)

//   SIGMA0(x) = ROTR(7,x) XOR ROTR(18,x) XOR SHR(3,x)
//   SIGMA1(x) = ROTR(17,x) XOR ROTR(19,x) XOR SHR(10,x)
#define MSGSCHEDULE1(index) \
	MOVL	((index-2)*4)(BP), AX; \
	MOVL	AX, CX; \
	RORL	$17, AX; \
	MOVL	CX, DX; \
	RORL	$19, CX; \
	SHRL	$10, DX; \
	MOVL	((index-15)*4)(BP), BX; \
	XORL	CX, AX; \
	MOVL	BX, CX; \
	XORL	DX, AX; \
	RORL	$7, BX; \
	MOVL	CX, DX; \
	SHRL	$3, DX; \
	RORL	$18, CX; \

		}
		v.reset(OpAMD64SHLXQ)
		v.AddArg2(x, y)
		return true
	}
	return false
}
func rewriteValueAMD64latelower_OpAMD64SHRL(v *Value) bool {
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	// match: (SHRL x y)
	// cond: buildcfg.GOAMD64 >= 3
	// result: (SHRXL x y)
	for {
		x := v_0
		y := v_1
		if !(buildcfg.GOAMD64 >= 3) {
			break
		}
		v.reset(OpAMD64SHRXL)
		v.AddArg2(x, y)
		return true

ssh-ed25519
******@****.***
sk-ecdsa-sha2******@****.***
ecdsa-sha2-nistp256
ecdsa-sha2-nistp384
ecdsa-sha2-nistp521
rsa-sha2-256
rsa-sha2-512
ssh-rsa
ssh-dss
```

`--sftp=kex-algos=...` specifies the supported key-exchange algorithms in preference order.

Valid values: 

```
curve25519-sha256
******@****.***
ecdh-sha2-nistp256
ecdh-sha2-nistp384

	ADDQ   R10, R13
	ANDQ   AX, R15
	ADDQ   R12, R15

	// Second reduction chain (carryPropagate)
	MOVQ   DI, SI
	SHRQ   $0x33, SI
	MOVQ   R9, R8
	SHRQ   $0x33, R8
	MOVQ   R11, R10
	SHRQ   $0x33, R10
	MOVQ   R13, R12
	SHRQ   $0x33, R12
	MOVQ   R15, R14
	SHRQ   $0x33, R14
	ANDQ   AX, DI
	IMUL3Q $0x13, R14, R14
	ADDQ   R14, DI
	ANDQ   AX, R9
	ADDQ   SI, R9
	ANDQ   AX, R11

(MOVLQZX x) && zeroUpper32Bits(x,3)...

	}{
		{[]string{}, "foo", 0, false},
		{[]string{}, "", 0, false},

		{str1, "foo", 0, true},
		{str1, "bar", 0, false},
		{str1, "zx", 1, false},

		{str2, "aa", 0, false},
		{str2, "ab", 0, true},
		{str2, "ad", 1, false},
		{str2, "ca", 1, true},
		{str2, "ra", 2, false},

		{str3, "bb", 0, false},
		{str3, "mo", 0, true},
		{str3, "nb", 1, false},
		{str3, "qo", 1, true},
		{str3, "tr", 2, false},

	Comment("Second reduction chain (carryPropagate)")
	// c0 = r0 >> 51
	MOVQ(r0lo, c0)
	SHRQ(Imm(51), c0)
	// c1 = r1 >> 51
	MOVQ(r1lo, c1)
	SHRQ(Imm(51), c1)
	// c2 = r2 >> 51
	MOVQ(r2lo, c2)
	SHRQ(Imm(51), c2)
	// c3 = r3 >> 51
	MOVQ(r3lo, c3)
	SHRQ(Imm(51), c3)
	// c4 = r4 >> 51
	MOVQ(r4lo, c4)
	SHRQ(Imm(51), c4)
	maskAndAdd(r0lo, maskLow51Bits, c4, 19)
	maskAndAdd(r1lo, maskLow51Bits, c0, 1)

	BSRL	CX, CX	// index of highest bit difference
	SHRL	CX, BX	// move a's bit to bottom
	ANDL	$1, BX	// mask bit
	LEAL	-1(BX*2), BX // 1/0 => +1/-1
	MOVL	BX, (AX)
	RET

	// 0-3 bytes in common
small:
	LEAL	(BP*8), CX
	NEGL	CX
	JEQ	allsame

	// load si
	CMPB	SI, $0xfc
	JA	si_high
	MOVL	(SI), SI
	JMP	si_finish
si_high:
	MOVL	-4(SI)(BP*1), SI
	SHRL	CX, SI
si_finish:
	SHLL	CX, SI

	type T2 struct {
		a string
		b int
	}
	const size = 1024
	var (
		str1 = "foobar"
		str2 = "foobarz"

		a [size]T2
		c [size]T2
	)

	for i := 0; i < size; i++ {
		a[i].a = str1
		c[i].a = str1
	}
	c[len(c)-1].a = str2

	b.ResetTimer()
	for j := 0; j < b.N; j++ {
		_ = a == c
	}
}

const size = 16

type T1 struct {