#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 */
typedef struct TYPE_2__ TYPE_1__;

/* Type definitions */
struct TYPE_2__ {
  int /*<<< orphan*/ s_addr;
};
struct sockaddr_in {
  int /*<<< orphan*/ sin_port;
  TYPE_1__ sin_addr;
  int /*<<< orphan*/ sin_family;
};
struct sockaddr {
  int dummy;
};
typedef int /*<<< orphan*/ server_address;

/* Variables and functions */
int /*<<< orphan*/ AF_INET;
int /*<<< orphan*/ IPPROTO_TCP;
int /*<<< orphan*/ PF_INET;
int /*<<< orphan*/ SOCK_STREAM;
scalar_t__ connect(int, struct sockaddr *, int);
int /*<<< orphan*/ htons(int);
int /*<<< orphan*/ inet_addr(char *);
int /*<<< orphan*/ memset(struct sockaddr_in *, int /*<<< orphan*/, int);
int /*<<< orphan*/ printf(char *, ...);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int main(int argc, char *argv[]) {
  if (argc < 2) {
    printf("Usage: %s <Server IP>\n", argv[0]);
    return 0;
  }
  char *server_IP = argv[1];
  struct sockaddr_in server_address;
  memset(&server_address, 0, sizeof(server_address));
  server_address.sin_family = AF_INET;
  server_address.sin_addr.s_addr = inet_addr(server_IP);
  server_address.sin_port = htons(8000);
  int client_socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
  if ((connect(client_socket, (struct sockaddr *)&server_address,
               sizeof(server_address))) < 0)
    printf("Failed to connect to server\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
jge    11a1 <main+0x41>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xe72(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
movl   $0x0,-0x4(%rbp)
jmp    1235 <main+0xd5>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rax
mov    %rax,-0x18(%rbp)
lea    -0x28(%rbp),%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1050 <memset@plt>
mov    0x2e24(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x20(%rbp)
mov    -0x18(%rbp),%rdi
call   1060 <inet_addr@plt>
mov    %eax,-0x24(%rbp)
mov    $0x1f40,%edi
call   1030 <htons@plt>
mov    %eax,-0x28(%rbp)
mov    0x2ddf(%rip),%rax
mov    (%rax),%edi
mov    0x2dde(%rip),%rax
mov    (%rax),%esi
mov    0x2de5(%rip),%rax
mov    (%rax),%edx
call   1080 <socket@plt>
mov    %eax,-0x2c(%rbp)
mov    -0x2c(%rbp),%edi
lea    -0x28(%rbp),%rsi
mov    $0xc,%edx
call   1070 <connect@plt>
cmp    $0x0,%rax
jge    122e <main+0xce>
lea    0xdf0(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
sub    $0x18,%rsp
cmp    $0x1,%edi
jg     118f <main+0x1f>
mov    (%rsi),%rsi
lea    0xe7a(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
jmp    120e <main+0x9e>
mov    0x8(%rsi),%rbx
lea    0x8(%rsp),%r14
mov    %r14,%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1060 <memset@plt>
mov    0x2e3a(%rip),%rax
mov    (%rax),%eax
mov    %eax,0x10(%rsp)
mov    %rbx,%rdi
call   1070 <inet_addr@plt>
mov    %eax,0xc(%rsp)
mov    $0x1f40,%edi
call   1040 <htons@plt>
mov    %eax,0x8(%rsp)
mov    0x2df3(%rip),%rax
mov    (%rax),%edi
mov    0x2df2(%rip),%rax
mov    (%rax),%esi
mov    0x2df9(%rip),%rax
mov    (%rax),%edx
call   1090 <socket@plt>
mov    %eax,%edi
mov    %r14,%rsi
mov    $0xc,%edx
call   1080 <connect@plt>
test   %rax,%rax
jns    120e <main+0x9e>
lea    0xe0e(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0x18,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
%struct.sockaddr_in = type { i32, %struct.TYPE_2__, i32 }
%struct.TYPE_2__ = type { i32 }
%struct.sockaddr = type { i32 }
@.str = [23 x i8] c"Usage: %s <Server IP>\0A\00"
@AF_INET = global i32 0
@PF_INET = global i32 0
@SOCK_STREAM = global i32 0
@IPPROTO_TCP = global i32 0
@.str.1 = [29 x i8] c"Failed to connect to server\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i8*
%7 = alloca %struct.sockaddr_in
%8 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%9 = load i32, i32* %4
%10 = icmp slt i32 %9, 2
br i1 %10, label %11, label %16
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 0
%14 = load i8*, i8** %13
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0), i8* %14)
store i32 0, i32* %3
br label %40
16: ; preds = %2
%17 = load i8**, i8*** %5
%18 = getelementptr inbounds i8*, i8** %17, i64 1
%19 = load i8*, i8** %18
store i8* %19, i8** %6
%20 = call i32 @memset(%struct.sockaddr_in* %7, i32 0, i32 12)
%21 = load i32, i32* @AF_INET
%22 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %7, i32 0, i32 2
store i32 %21, i32* %22
%23 = load i8*, i8** %6
%24 = call i32 @inet_addr(i8* %23)
%25 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %7, i32 0, i32 1
%26 = getelementptr inbounds %struct.TYPE_2__, %struct.TYPE_2__* %25, i32 0, i32 0
store i32 %24, i32* %26
%27 = call i32 @htons(i32 8000)
%28 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %7, i32 0, i32 0
store i32 %27, i32* %28
%29 = load i32, i32* @PF_INET
%30 = load i32, i32* @SOCK_STREAM
%31 = load i32, i32* @IPPROTO_TCP
%32 = call i32 @socket(i32 %29, i32 %30, i32 %31)
store i32 %32, i32* %8
%33 = load i32, i32* %8
%34 = bitcast %struct.sockaddr_in* %7 to %struct.sockaddr*
%35 = call i64 @connect(i32 %33, %struct.sockaddr* %34, i32 12)
%36 = icmp slt i64 %35, 0
br i1 %36, label %37, label %39
37: ; preds = %16
%38 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.1, i64 0, i64 0))
br label %39
39: ; preds = %37, %16
store i32 0, i32* %3
br label %40
40: ; preds = %39, %11
%41 = load i32, i32* %3
ret i32 %41
}

LLVM IR (-O2):
%struct.sockaddr_in = type { i32, %struct.TYPE_2__, i32 }
%struct.TYPE_2__ = type { i32 }
%struct.sockaddr = type { i32 }
@.str = [23 x i8] c"Usage: %s <Server IP>\0A\00"
@AF_INET = global i32 0
@PF_INET = global i32 0
@SOCK_STREAM = global i32 0
@IPPROTO_TCP = global i32 0
@str = [28 x i8] c"Failed to connect to server\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = alloca %struct.sockaddr_in
%4 = icmp slt i32 %0, 2
br i1 %4, label %5, label %8
5: ; preds = %2
%6 = load i8*, i8** %1
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0), i8* %6)
br label %29
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = bitcast %struct.sockaddr_in* %3 to i8*
%12 = call i32 @memset(%struct.sockaddr_in* %3, i32 0, i32 12)
%13 = load i32, i32* @AF_INET
%14 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 2
store i32 %13, i32* %14
%15 = call i32 @inet_addr(i8* %10)
%16 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 1, i32 0
store i32 %15, i32* %16
%17 = call i32 @htons(i32 8000)
%18 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 0
store i32 %17, i32* %18
%19 = load i32, i32* @PF_INET
%20 = load i32, i32* @SOCK_STREAM
%21 = load i32, i32* @IPPROTO_TCP
%22 = call i32 @socket(i32 %19, i32 %20, i32 %21)
%23 = bitcast %struct.sockaddr_in* %3 to %struct.sockaddr*
%24 = call i64 @connect(i32 %22, %struct.sockaddr* %23, i32 12)
%25 = icmp slt i64 %24, 0
br i1 %25, label %26, label %28
26: ; preds = %8
%27 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @str, i64 0, i64 0))
br label %28
28: ; preds = %26, %8
br label %29
29: ; preds = %28, %5
ret i32 0
}