Given the following C code and unoptimized assembly code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
#include <stdio.h>


long gcd(long a,long b)
{
        if(a%b==0)
                return b;
        else
                return gcd(b,a%b);
}
int main(void)
{
        long a,b;

        scanf("%ld%ld",&a,&b);

        printf("%ld",a*b/gcd(a,b));
        return 0;
}
```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.globl	gcd
	.type	gcd, @function
gcd:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$16, %rsp
	movq	%rdi, -8(%rbp)
	movq	%rsi, -16(%rbp)
	movq	-8(%rbp), %rax
	cqto
	idivq	-16(%rbp)
	movq	%rdx, %rax
	testq	%rax, %rax
	jne	.L2
	movq	-16(%rbp), %rax
	jmp	.L3
.L2:
	movq	-8(%rbp), %rax
	cqto
	idivq	-16(%rbp)
	movq	-16(%rbp), %rax
	movq	%rdx, %rsi
	movq	%rax, %rdi
	call	gcd
.L3:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.size	gcd, .-gcd
	.section	.rodata
.LC0:
	.string	"%ld%ld"
.LC1:
	.string	"%ld"
	.text
	.globl	main
	.type	main, @function
main:
.LFB1:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%rbx
	subq	$40, %rsp
	.cfi_offset 3, -24
	movq	%fs:40, %rax
	movq	%rax, -24(%rbp)
	xorl	%eax, %eax
	leaq	-32(%rbp), %rdx
	leaq	-40(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movq	-40(%rbp), %rdx
	movq	-32(%rbp), %rax
	movq	%rdx, %rbx
	imulq	%rax, %rbx
	movq	-32(%rbp), %rdx
	movq	-40(%rbp), %rax
	movq	%rdx, %rsi
	movq	%rax, %rdi
	call	gcd
	movq	%rax, %rcx
	movq	%rbx, %rax
	cqto
	idivq	%rcx
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	-24(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L6
	call	__stack_chk_fail@PLT
.L6:
	movq	-8(%rbp), %rbx
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE1:
	.size	main, .-main
	.ident	"GCC: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:
```

Only output the optimized assembly code. Do not include any other text. Do not write any comments in the assembly code. Wrap the assembly code in ```assembly``` tags.
user
	.file	"temp.c"
	.text
	.p2align 4
	.globl	gcd
	.type	gcd, @function
gcd:
.LFB23:
	.cfi_startproc
	endbr64
	movq	%rdi, %rax
	movq	%rsi, %rdx
	.p2align 4,,10
	.p2align 3
.L2:
	movq	%rdx, %rcx
	cqto
	idivq	%rcx
	movq	%rcx, %rax
	testq	%rdx, %rdx
	jne	.L2
	ret
	.cfi_endproc
.LFE23:
	.size	gcd, .-gcd
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%ld%ld"
.LC1:
	.string	"%ld"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB24:
	.cfi_startproc
	endbr64
	subq	$40, %rsp
	.cfi_def_cfa_offset 48
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	16(%rsp), %rdx
	leaq	8(%rsp), %rsi
	call	__isoc99_scanf@PLT
	movq	8(%rsp), %rcx
	movq	16(%rsp), %rdx
	movq	%rcx, %rdi
	imulq	%rdx, %rdi
	.p2align 4,,10
	.p2align 3
.L6:
	movq	%rcx, %rax
	movq	%rdx, %rcx
	cqto
	idivq	%rcx
	testq	%rdx, %rdx
	jne	.L6
	movq	%rdi, %rax
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	cqto
	idivq	%rcx
	movq	%rax, %rdx
	xorl	%eax, %eax
	call	__printf_chk@PLT
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L10
	xorl	%eax, %eax
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L10:
	.cfi_restore_state
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE24:
	.size	main, .-main
	.ident	"GCC: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:

rule
	.file	"temp.c"
	.text
	.p2align 4
	.globl	gcd
	.type	gcd, @function
gcd:
.LFB23:
	.cfi_startproc
	endbr64
	movq	%rdi, %rax
	movq	%rsi, %rdx
	.p2align 4,,10
	.p2align 3
.L2:
	movq	%rdx, %rcx
	cqto
	idivq	%rcx
	movq	%rcx, %rax
	testq	%rdx, %rdx
	jne	.L2
	ret
	.cfi_endproc
.LFE23:
	.size	gcd, .-gcd
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%ld%ld"
.LC1:
	.string	"%ld"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB24:
	.cfi_startproc
	endbr64
	subq	$40, %rsp
	.cfi_def_cfa_offset 48
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	16(%rsp), %rdx
	leaq	8(%rsp), %rsi
	call	__isoc99_scanf@PLT
	movq	8(%rsp), %rcx
	movq	16(%rsp), %rdx
	movq	%rcx, %rdi
	imulq	%rdx, %rdi
	.p2align 4,,10
	.p2align 3
.L6:
	movq	%rcx, %rax
	movq	%rdx, %rcx
	cqto
	idivq	%rcx
	testq	%rdx, %rdx
	jne	.L6
	movq	%rdi, %rax
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	cqto
	idivq	%rcx
	movq	%rax, %rdx
	xorl	%eax, %eax
	call	__printf_chk@PLT
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L10
	xorl	%eax, %eax
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L10:
	.cfi_restore_state
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE24:
	.size	main, .-main
	.ident	"GCC: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:

#include <stdio.h>


long gcd(long a,long b)
{
        if(a%b==0)
                return b;
        else
                return gcd(b,a%b);
}
int main(void)
{
        long a,b;

        scanf("%ld%ld",&a,&b);

        printf("%ld",a*b/gcd(a,b));
        return 0;
}

110000 99999
 123 179
 2 1
 110001 99999
 108 179
 3 1
 110001 118998
 50 179
 1 1
 110001 52132

10999890000 22017 2 3666663333 19332 3 4363299666 8950 1 5734572132
Given the following C code and unoptimized assembly code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
#include <stdio.h>


long gcd(long a,long b)
{
        if(a%b==0)
                return b;
        else
                return gcd(b,a%b);
}
int main(void)
{
        long a,b;

        scanf("%ld%ld",&a,&b);

        printf("%ld",a*b/gcd(a,b));
        return 0;
}
```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.globl	gcd
	.type	gcd, @function
gcd:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$16, %rsp
	movq	%rdi, -8(%rbp)
	movq	%rsi, -16(%rbp)
	movq	-8(%rbp), %rax
	cqto
	idivq	-16(%rbp)
	movq	%rdx, %rax
	testq	%rax, %rax
	jne	.L2
	movq	-16(%rbp), %rax
	jmp	.L3
.L2:
	movq	-8(%rbp), %rax
	cqto
	idivq	-16(%rbp)
	movq	-16(%rbp), %rax
	movq	%rdx, %rsi
	movq	%rax, %rdi
	call	gcd
.L3:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.size	gcd, .-gcd
	.section	.rodata
.LC0:
	.string	"%ld%ld"
.LC1:
	.string	"%ld"
	.text
	.globl	main
	.type	main, @function
main:
.LFB1:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%rbx
	subq	$40, %rsp
	.cfi_offset 3, -24
	movq	%fs:40, %rax
	movq	%rax, -24(%rbp)
	xorl	%eax, %eax
	leaq	-32(%rbp), %rdx
	leaq	-40(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movq	-40(%rbp), %rdx
	movq	-32(%rbp), %rax
	movq	%rdx, %rbx
	imulq	%rax, %rbx
	movq	-32(%rbp), %rdx
	movq	-40(%rbp), %rax
	movq	%rdx, %rsi
	movq	%rax, %rdi
	call	gcd
	movq	%rax, %rcx
	movq	%rbx, %rax
	cqto
	idivq	%rcx
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	-24(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L6
	call	__stack_chk_fail@PLT
.L6:
	movq	-8(%rbp), %rbx
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE1:
	.size	main, .-main
	.ident	"GCC: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:
```

Only output the optimized assembly code. Do not include any other text. Do not write any comments in the assembly code. Wrap the assembly code in ```assembly``` tags.
train
	.file	"temp.c"
	.text
	.globl	gcd
	.type	gcd, @function
gcd:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$16, %rsp
	movq	%rdi, -8(%rbp)
	movq	%rsi, -16(%rbp)
	movq	-8(%rbp), %rax
	cqto
	idivq	-16(%rbp)
	movq	%rdx, %rax
	testq	%rax, %rax
	jne	.L2
	movq	-16(%rbp), %rax
	jmp	.L3
.L2:
	movq	-8(%rbp), %rax
	cqto
	idivq	-16(%rbp)
	movq	-16(%rbp), %rax
	movq	%rdx, %rsi
	movq	%rax, %rdi
	call	gcd
.L3:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.size	gcd, .-gcd
	.section	.rodata
.LC0:
	.string	"%ld%ld"
.LC1:
	.string	"%ld"
	.text
	.globl	main
	.type	main, @function
main:
.LFB1:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%rbx
	subq	$40, %rsp
	.cfi_offset 3, -24
	movq	%fs:40, %rax
	movq	%rax, -24(%rbp)
	xorl	%eax, %eax
	leaq	-32(%rbp), %rdx
	leaq	-40(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movq	-40(%rbp), %rdx
	movq	-32(%rbp), %rax
	movq	%rdx, %rbx
	imulq	%rax, %rbx
	movq	-32(%rbp), %rdx
	movq	-40(%rbp), %rax
	movq	%rdx, %rsi
	movq	%rax, %rdi
	call	gcd
	movq	%rax, %rcx
	movq	%rbx, %rax
	cqto
	idivq	%rcx
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	-24(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L6
	call	__stack_chk_fail@PLT
.L6:
	movq	-8(%rbp), %rbx
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE1:
	.size	main, .-main
	.ident	"GCC: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:
