#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*/ serverAddress;

/* Variables and functions */
int /*<<< orphan*/ AF_INET;
int /*<<< orphan*/ INADDR_ANY;
int /*<<< orphan*/ SOCK_STREAM;
int /*<<< orphan*/ SOL_SOCKET;
int /*<<< orphan*/ SO_REUSEADDR;
int /*<<< orphan*/ assert(int);
int bind(int, struct sockaddr *, int);
int /*<<< orphan*/ htons(int);
int /*<<< orphan*/ memset(char *, int /*<<< orphan*/, int);
int /*<<< orphan*/ setsockopt(int, int /*<<< orphan*/, int /*<<< orphan*/,
                              int *, int);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int makeServerSocket(int portNumber) {
  int serverSocket = socket(AF_INET, SOCK_STREAM, 0);
  assert(serverSocket >= 0);
  struct sockaddr_in serverAddress;
  memset((char *)&serverAddress, 0, sizeof(serverAddress));
  serverAddress.sin_family = AF_INET;
  serverAddress.sin_addr.s_addr = INADDR_ANY;
  serverAddress.sin_port = htons(portNumber);
  int optionValue = 1;
  setsockopt(serverSocket, SOL_SOCKET, SO_REUSEADDR, &optionValue, sizeof(int));
  int bindSuccess = bind(serverSocket, (struct sockaddr *)&serverAddress,
                         sizeof(serverAddress));
  assert(bindSuccess >= 0);
  return serverSocket;
}


x86 assembly (clang, -O0):
<makeServerSocket>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x4(%rbp)
mov    0x2e6e(%rip),%rax
mov    (%rax),%edi
mov    0x2e4d(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   1080 <socket@plt>
mov    %eax,-0x8(%rbp)
cmpl   $0x0,-0x8(%rbp)
setge  %al
and    $0x1,%al
movzbl %al,%edi
call   1060 <assert@plt>
lea    -0x18(%rbp),%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1050 <memset@plt>
mov    0x2e31(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x10(%rbp)
mov    0x2e1d(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x14(%rbp)
mov    -0x4(%rbp),%edi
call   1040 <htons@plt>
mov    %eax,-0x18(%rbp)
movl   $0x1,-0x1c(%rbp)
mov    -0x8(%rbp),%edi
mov    0x2e0c(%rip),%rax
mov    (%rax),%esi
mov    0x2ddb(%rip),%rax
mov    (%rax),%edx
lea    -0x1c(%rbp),%rcx
mov    $0x4,%r8d
call   1030 <setsockopt@plt>
mov    -0x8(%rbp),%edi
lea    -0x18(%rbp),%rsi
mov    $0xc,%edx
call   1070 <bind@plt>
mov    %eax,-0x20(%rbp)
cmpl   $0x0,-0x20(%rbp)
setge  %al
and    $0x1,%al
movzbl %al,%edi
call   1060 <assert@plt>
mov    -0x8(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<makeServerSocket>:
push   %rbp
push   %r15
push   %r14
push   %rbx
sub    $0x18,%rsp
mov    %edi,%ebp
mov    0x2e6d(%rip),%r15
mov    (%r15),%edi
mov    0x2e4b(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   1080 <socket@plt>
mov    %eax,%ebx
mov    %eax,%edi
not    %edi
shr    $0x1f,%edi
call   1060 <assert@plt>
lea    0x8(%rsp),%r14
mov    %r14,%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1050 <memset@plt>
mov    (%r15),%eax
mov    %eax,0x10(%rsp)
mov    0x2e22(%rip),%rax
mov    (%rax),%eax
mov    %eax,0xc(%rsp)
mov    %ebp,%edi
call   1040 <htons@plt>
mov    %eax,0x8(%rsp)
movl   $0x1,0x4(%rsp)
mov    0x2e12(%rip),%rax
mov    (%rax),%esi
mov    0x2de1(%rip),%rax
mov    (%rax),%edx
lea    0x4(%rsp),%rcx
mov    %ebx,%edi
mov    $0x4,%r8d
call   1030 <setsockopt@plt>
mov    %ebx,%edi
mov    %r14,%rsi
mov    $0xc,%edx
call   1070 <bind@plt>
not    %eax
shr    $0x1f,%eax
mov    %eax,%edi
call   1060 <assert@plt>
mov    %ebx,%eax
add    $0x18,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
%struct.sockaddr_in = type { i32, %struct.TYPE_2__, i32 }
%struct.TYPE_2__ = type { i32 }
%struct.sockaddr = type { i32 }
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@INADDR_ANY = global i32 0
@SOL_SOCKET = global i32 0
@SO_REUSEADDR = global i32 0
define i32 @makeServerSocket(i32 %0) {
%2 = alloca i32
%3 = alloca i32
%4 = alloca %struct.sockaddr_in
%5 = alloca i32
%6 = alloca i32
store i32 %0, i32* %2
%7 = load i32, i32* @AF_INET
%8 = load i32, i32* @SOCK_STREAM
%9 = call i32 @socket(i32 %7, i32 %8, i32 0)
store i32 %9, i32* %3
%10 = load i32, i32* %3
%11 = icmp sge i32 %10, 0
%12 = zext i1 %11 to i32
%13 = call i32 @assert(i32 %12)
%14 = bitcast %struct.sockaddr_in* %4 to i8*
%15 = call i32 @memset(i8* %14, i32 0, i32 12)
%16 = load i32, i32* @AF_INET
%17 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %4, i32 0, i32 2
store i32 %16, i32* %17
%18 = load i32, i32* @INADDR_ANY
%19 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %4, i32 0, i32 1
%20 = getelementptr inbounds %struct.TYPE_2__, %struct.TYPE_2__* %19, i32 0, i32 0
store i32 %18, i32* %20
%21 = load i32, i32* %2
%22 = call i32 @htons(i32 %21)
%23 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %4, i32 0, i32 0
store i32 %22, i32* %23
store i32 1, i32* %5
%24 = load i32, i32* %3
%25 = load i32, i32* @SOL_SOCKET
%26 = load i32, i32* @SO_REUSEADDR
%27 = call i32 @setsockopt(i32 %24, i32 %25, i32 %26, i32* %5, i32 4)
%28 = load i32, i32* %3
%29 = bitcast %struct.sockaddr_in* %4 to %struct.sockaddr*
%30 = call i32 @bind(i32 %28, %struct.sockaddr* %29, i32 12)
store i32 %30, i32* %6
%31 = load i32, i32* %6
%32 = icmp sge i32 %31, 0
%33 = zext i1 %32 to i32
%34 = call i32 @assert(i32 %33)
%35 = load i32, i32* %3
ret i32 %35
}

LLVM IR (-O2):
%struct.sockaddr_in = type { i32, %struct.TYPE_2__, i32 }
%struct.TYPE_2__ = type { i32 }
%struct.sockaddr = type { i32 }
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@INADDR_ANY = global i32 0
@SOL_SOCKET = global i32 0
@SO_REUSEADDR = global i32 0
define i32 @makeServerSocket(i32 %0) {
%2 = alloca %struct.sockaddr_in
%3 = alloca i32
%4 = load i32, i32* @AF_INET
%5 = load i32, i32* @SOCK_STREAM
%6 = tail call i32 @socket(i32 %4, i32 %5, i32 0)
%7 = xor i32 %6, -1
%8 = lshr i32 %7, 31
%9 = tail call i32 @assert(i32 %8)
%10 = bitcast %struct.sockaddr_in* %2 to i8*
%11 = call i32 @memset(i8* %10, i32 0, i32 12)
%12 = load i32, i32* @AF_INET
%13 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %2, i64 0, i32 2
store i32 %12, i32* %13
%14 = load i32, i32* @INADDR_ANY
%15 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %2, i64 0, i32 1, i32 0
store i32 %14, i32* %15
%16 = call i32 @htons(i32 %0)
%17 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %2, i64 0, i32 0
store i32 %16, i32* %17
%18 = bitcast i32* %3 to i8*
store i32 1, i32* %3
%19 = load i32, i32* @SOL_SOCKET
%20 = load i32, i32* @SO_REUSEADDR
%21 = call i32 @setsockopt(i32 %6, i32 %19, i32 %20, i32* %3, i32 4)
%22 = bitcast %struct.sockaddr_in* %2 to %struct.sockaddr*
%23 = call i32 @bind(i32 %6, %struct.sockaddr* %22, i32 12)
%24 = xor i32 %23, -1
%25 = lshr i32 %24, 31
%26 = call i32 @assert(i32 %25)
ret i32 %6
}