#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int gcd(int, int);
int mul(int, int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *, int *);
int main() {
  int m, n;
  printf("Please input 2 integers(format:a,b):\n");
  scanf("%d,%d", &m, &n);
  printf("the greatest common divisor of %d and %d is %d\n", m, n, gcd(m, n));
  printf("the lowest common multiple of %d and %d is %d\n", m, n, mul(m, n));
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
lea    0xeb1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec9(%rip),%rdi
lea    -0x4(%rbp),%rsi
lea    -0x8(%rbp),%rdx
call   1040 <scanf@plt>
mov    -0x4(%rbp),%eax
mov    %eax,-0x18(%rbp)
mov    -0x8(%rbp),%eax
mov    %eax,-0x14(%rbp)
mov    -0x4(%rbp),%edi
mov    -0x8(%rbp),%esi
call   1060 <gcd@plt>
mov    -0x18(%rbp),%esi
mov    -0x14(%rbp),%edx
mov    %eax,%ecx
lea    0xe9c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0x8(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0x4(%rbp),%edi
mov    -0x8(%rbp),%esi
call   1050 <mul@plt>
mov    -0x10(%rbp),%esi
mov    -0xc(%rbp),%edx
mov    %eax,%ecx
lea    0xe9f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
push   %rax
lea    0xf0b(%rip),%rdi
call   1030 <puts@plt>
lea    0xe9a(%rip),%rdi
lea    0x4(%rsp),%rsi
mov    %rsp,%rdx
call   1050 <scanf@plt>
mov    0x4(%rsp),%ebx
mov    (%rsp),%ebp
mov    %ebx,%edi
mov    %ebp,%esi
call   1070 <gcd@plt>
lea    0xe7c(%rip),%rdi
mov    %ebx,%esi
mov    %ebp,%edx
mov    %eax,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x4(%rsp),%ebx
mov    (%rsp),%ebp
mov    %ebx,%edi
mov    %ebp,%esi
call   1060 <mul@plt>
lea    0xe88(%rip),%rdi
mov    %ebx,%esi
mov    %ebp,%edx
mov    %eax,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [38 x i8] c"Please input 2 integers(format:a,b):\0A\00"
@.str.1 = [6 x i8] c"%d,%d\00"
@.str.2 = [48 x i8] c"the greatest common divisor of %d and %d is %d\0A\00"
@.str.3 = [47 x i8] c"the lowest common multiple of %d and %d is %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([38 x i8], [38 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2)
%5 = load i32, i32* %1
%6 = load i32, i32* %2
%7 = load i32, i32* %1
%8 = load i32, i32* %2
%9 = call i32 @gcd(i32 %7, i32 %8)
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([48 x i8], [48 x i8]* @.str.2, i64 0, i64 0), i32 %5, i32 %6, i32 %9)
%11 = load i32, i32* %1
%12 = load i32, i32* %2
%13 = load i32, i32* %1
%14 = load i32, i32* %2
%15 = call i32 @mul(i32 %13, i32 %14)
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.3, i64 0, i64 0), i32 %11, i32 %12, i32 %15)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [6 x i8] c"%d,%d\00"
@.str.2 = [48 x i8] c"the greatest common divisor of %d and %d is %d\0A\00"
@.str.3 = [47 x i8] c"the lowest common multiple of %d and %d is %d\0A\00"
@str = [37 x i8] c"Please input 2 integers(format:a,b):\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([37 x i8], [37 x i8]* @str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2)
%7 = load i32, i32* %1
%8 = load i32, i32* %2
%9 = call i32 @gcd(i32 %7, i32 %8)
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([48 x i8], [48 x i8]* @.str.2, i64 0, i64 0), i32 %7, i32 %8, i32 %9)
%11 = load i32, i32* %1
%12 = load i32, i32* %2
%13 = call i32 @mul(i32 %11, i32 %12)
%14 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([47 x i8], [47 x i8]* @.str.3, i64 0, i64 0), i32 %11, i32 %12, i32 %13)
ret i32 0
}