#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 */
struct sockaddr_in {
  int /*<<< orphan*/ sin_port;
  int /*<<< orphan*/ sin_addr;
  int /*<<< orphan*/ sin_family;
};
struct sockaddr {
  int dummy;
};
typedef int /*<<< orphan*/ server_addr;

/* Variables and functions */
int /*<<< orphan*/ AF_INET;
int /*<<< orphan*/ IPPROTO_TCP;
int /*<<< orphan*/ PF_INET;
int /*<<< orphan*/ SOCK_STREAM;
scalar_t__ bind(int, struct sockaddr *, int);
int /*<<< orphan*/ error_msg_and_exit(char *);
int /*<<< orphan*/ htons(int);
int /*<<< orphan*/ inet_pton(int /*<<< orphan*/, char *, int /*<<< orphan*/ *);
int /*<<< orphan*/ memset(struct sockaddr_in *, int /*<<< orphan*/, int);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int make_socket(int port) {
  int sock;
  struct sockaddr_in server_addr;
  sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (sock < 0) {
    error_msg_and_exit("Error creating socket");
  }
  memset(&server_addr, 0, sizeof(server_addr));
  server_addr.sin_family = AF_INET;
  inet_pton(AF_INET, "127.0.0.1", &(server_addr.sin_addr));
  server_addr.sin_port = htons(port);
  if (bind(sock, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
    error_msg_and_exit("Error on bind");
  }
  return sock;
}


x86 assembly (clang, -O0):
<make_socket>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x4(%rbp)
mov    0x2e56(%rip),%rax
mov    (%rax),%edi
mov    0x2e55(%rip),%rax
mov    (%rax),%esi
mov    0x2e5c(%rip),%rax
mov    (%rax),%edx
call   1080 <socket@plt>
mov    %eax,-0x8(%rbp)
cmpl   $0x0,-0x8(%rbp)
jge    11a4 <make_socket+0x44>
lea    0xe61(%rip),%rdi
call   1070 <error_msg_and_exit@plt>
lea    -0x18(%rbp),%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1040 <memset@plt>
mov    0x2e2d(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x10(%rbp)
mov    0x2e21(%rip),%rax
mov    (%rax),%edi
lea    -0x18(%rbp),%rdx
add    $0x4,%rdx
lea    0xe3e(%rip),%rsi
call   1050 <inet_pton@plt>
mov    -0x4(%rbp),%edi
call   1030 <htons@plt>
mov    %eax,-0x18(%rbp)
mov    -0x8(%rbp),%edi
lea    -0x18(%rbp),%rsi
mov    $0xc,%edx
call   1060 <bind@plt>
cmp    $0x0,%rax
jge    120f <make_socket+0xaf>
lea    0xe16(%rip),%rdi
call   1070 <error_msg_and_exit@plt>
mov    -0x8(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<make_socket>:
push   %rbp
push   %r14
push   %rbx
sub    $0x10,%rsp
mov    %edi,%r14d
mov    0x2e56(%rip),%rax
mov    (%rax),%edi
mov    0x2e55(%rip),%rax
mov    (%rax),%esi
mov    0x2e5c(%rip),%rax
mov    (%rax),%edx
call   1080 <socket@plt>
mov    %eax,%ebx
test   %eax,%eax
jns    119d <make_socket+0x3d>
lea    0xe68(%rip),%rdi
call   1070 <error_msg_and_exit@plt>
mov    %rsp,%rbp
mov    %rbp,%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1040 <memset@plt>
mov    0x2e32(%rip),%rax
mov    (%rax),%edi
mov    %edi,0x8(%rsp)
lea    0x4(%rsp),%rdx
lea    0xe4e(%rip),%rsi
call   1050 <inet_pton@plt>
mov    %r14d,%edi
call   1030 <htons@plt>
mov    %eax,(%rsp)
mov    %ebx,%edi
mov    %rbp,%rsi
mov    $0xc,%edx
call   1060 <bind@plt>
test   %rax,%rax
jns    11f8 <make_socket+0x98>
lea    0xe2d(%rip),%rdi
call   1070 <error_msg_and_exit@plt>
mov    %ebx,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
%struct.sockaddr_in = type { i32, i32, i32 }
%struct.sockaddr = type { i32 }
@PF_INET = global i32 0
@SOCK_STREAM = global i32 0
@IPPROTO_TCP = global i32 0
@.str = [22 x i8] c"Error creating socket\00"
@AF_INET = global i32 0
@.str.1 = [10 x i8] c"127.0.0.1\00"
@.str.2 = [14 x i8] c"Error on bind\00"
define i32 @make_socket(i32 %0) {
%2 = alloca i32
%3 = alloca i32
%4 = alloca %struct.sockaddr_in
store i32 %0, i32* %2
%5 = load i32, i32* @PF_INET
%6 = load i32, i32* @SOCK_STREAM
%7 = load i32, i32* @IPPROTO_TCP
%8 = call i32 @socket(i32 %5, i32 %6, i32 %7)
store i32 %8, i32* %3
%9 = load i32, i32* %3
%10 = icmp slt i32 %9, 0
br i1 %10, label %11, label %13
11: ; preds = %1
%12 = call i32 @error_msg_and_exit(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
br label %13
13: ; preds = %11, %1
%14 = call i32 @memset(%struct.sockaddr_in* %4, i32 0, i32 12)
%15 = load i32, i32* @AF_INET
%16 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %4, i32 0, i32 2
store i32 %15, i32* %16
%17 = load i32, i32* @AF_INET
%18 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %4, i32 0, i32 1
%19 = call i32 @inet_pton(i32 %17, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i32* %18)
%20 = load i32, i32* %2
%21 = call i32 @htons(i32 %20)
%22 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %4, i32 0, i32 0
store i32 %21, i32* %22
%23 = load i32, i32* %3
%24 = bitcast %struct.sockaddr_in* %4 to %struct.sockaddr*
%25 = call i64 @bind(i32 %23, %struct.sockaddr* %24, i32 12)
%26 = icmp slt i64 %25, 0
br i1 %26, label %27, label %29
27: ; preds = %13
%28 = call i32 @error_msg_and_exit(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, i64 0, i64 0))
br label %29
29: ; preds = %27, %13
%30 = load i32, i32* %3
ret i32 %30
}

LLVM IR (-O2):
%struct.sockaddr_in = type { i32, i32, i32 }
%struct.sockaddr = type { i32 }
@PF_INET = global i32 0
@SOCK_STREAM = global i32 0
@IPPROTO_TCP = global i32 0
@.str = [22 x i8] c"Error creating socket\00"
@AF_INET = global i32 0
@.str.1 = [10 x i8] c"127.0.0.1\00"
@.str.2 = [14 x i8] c"Error on bind\00"
define i32 @make_socket(i32 %0) {
%2 = alloca %struct.sockaddr_in
%3 = bitcast %struct.sockaddr_in* %2 to i8*
%4 = load i32, i32* @PF_INET
%5 = load i32, i32* @SOCK_STREAM
%6 = load i32, i32* @IPPROTO_TCP
%7 = tail call i32 @socket(i32 %4, i32 %5, i32 %6)
%8 = icmp slt i32 %7, 0
br i1 %8, label %9, label %11
9: ; preds = %1
%10 = tail call i32 @error_msg_and_exit(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
br label %11
11: ; preds = %9, %1
%12 = call i32 @memset(%struct.sockaddr_in* %2, i32 0, i32 12)
%13 = load i32, i32* @AF_INET
%14 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %2, i64 0, i32 2
store i32 %13, i32* %14
%15 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %2, i64 0, i32 1
%16 = call i32 @inet_pton(i32 %13, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i32* %15)
%17 = call i32 @htons(i32 %0)
%18 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %2, i64 0, i32 0
store i32 %17, i32* %18
%19 = bitcast %struct.sockaddr_in* %2 to %struct.sockaddr*
%20 = call i64 @bind(i32 %7, %struct.sockaddr* %19, i32 12)
%21 = icmp slt i64 %20, 0
br i1 %21, label %22, label %24
22: ; preds = %11
%23 = call i32 @error_msg_and_exit(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, i64 0, i64 0))
br label %24
24: ; preds = %22, %11
ret i32 %7
}