#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 */
typedef int /*<<< orphan*/ uint16_t;
struct sockaddr_in {
  int /*<<< orphan*/ sin_addr;
  int /*<<< orphan*/ sin_port;
  int /*<<< orphan*/ sin_family;
};
struct sockaddr {
  int dummy;
};
typedef int /*<<< orphan*/ servaddr;

/* Variables and functions */
int /*<<< orphan*/ AF_INET;
int EXIT_FAILURE;
int /*<<< orphan*/ SOCK_STREAM;
scalar_t__ bind(int, struct sockaddr *, int);
int /*<<< orphan*/ bzero(struct sockaddr_in *, int);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ htons(int /*<<< orphan*/);
scalar_t__ inet_pton(int /*<<< orphan*/, char *, int /*<<< orphan*/ *);
scalar_t__ listen(int, int);
int /*<<< orphan*/ perror(char *);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int bind_local(uint16_t port) {
  int fd;
  struct sockaddr_in servaddr;
  fd = socket(AF_INET, SOCK_STREAM, 0);
  if (fd < 0) {
    perror("socket");
    exit(EXIT_FAILURE);
  }
  bzero(&servaddr, sizeof(servaddr));
  servaddr.sin_family = AF_INET;
  servaddr.sin_port = htons(port);
  if (inet_pton(AF_INET, "127.0.0.1", &servaddr.sin_addr) <= 0) {
    perror("inet_pton");
    exit(1);
  }
  if (bind(fd, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0) {
    perror("bind");
    exit(1);
  }
  if (listen(fd, 128) < 0) {
    perror("listen");
    exit(1);
  }
  return fd;
}


x86 assembly (clang, -O0):
<bind_local>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x4(%rbp)
mov    0x2e56(%rip),%rax
mov    (%rax),%edi
mov    0x2e3d(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   10a0 <socket@plt>
mov    %eax,-0x8(%rbp)
cmpl   $0x0,-0x8(%rbp)
jge    11cb <bind_local+0x4b>
lea    0xe48(%rip),%rdi
call   1070 <perror@plt>
mov    0x2e0c(%rip),%rax
mov    (%rax),%edi
call   1090 <exit@plt>
lea    -0x18(%rbp),%rdi
mov    $0xc,%esi
call   1080 <bzero@plt>
mov    0x2e08(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x10(%rbp)
mov    -0x4(%rbp),%edi
call   1030 <htons@plt>
mov    %eax,-0x14(%rbp)
mov    0x2df1(%rip),%rax
mov    (%rax),%edi
lea    -0x18(%rbp),%rdx
lea    0xe03(%rip),%rsi
call   1040 <inet_pton@plt>
cmp    $0x0,%rax
jg     1229 <bind_local+0xa9>
lea    0xdf7(%rip),%rdi
call   1070 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
mov    -0x8(%rbp),%edi
lea    -0x18(%rbp),%rsi
mov    $0xc,%edx
call   1060 <bind@plt>
cmp    $0x0,%rax
jge    125a <bind_local+0xda>
lea    0xdd0(%rip),%rdi
call   1070 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
mov    -0x8(%rbp),%edi
mov    $0x80,%esi
call   1050 <listen@plt>
cmp    $0x0,%rax
jge    1287 <bind_local+0x107>
lea    0xda8(%rip),%rdi
call   1070 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
mov    -0x8(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<bind_local>:
push   %rbp
push   %r15
push   %r14
push   %rbx
sub    $0x18,%rsp
mov    %edi,%ebp
mov    0x2e55(%rip),%r15
mov    (%r15),%edi
mov    0x2e3b(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   10a0 <socket@plt>
test   %eax,%eax
js     121b <bind_local+0x9b>
mov    %eax,%ebx
lea    0x8(%rsp),%r14
mov    %r14,%rdi
mov    $0xc,%esi
call   1080 <bzero@plt>
mov    (%r15),%eax
mov    %eax,0x10(%rsp)
mov    %ebp,%edi
call   1030 <htons@plt>
mov    %eax,0xc(%rsp)
mov    (%r15),%edi
lea    0xe2d(%rip),%rsi
mov    %r14,%rdx
call   1040 <inet_pton@plt>
test   %rax,%rax
jle    1235 <bind_local+0xb5>
lea    0x8(%rsp),%rsi
mov    %ebx,%edi
mov    $0xc,%edx
call   1060 <bind@plt>
test   %rax,%rax
js     123e <bind_local+0xbe>
mov    %ebx,%edi
mov    $0x80,%esi
call   1050 <listen@plt>
test   %rax,%rax
js     1247 <bind_local+0xc7>
mov    %ebx,%eax
add    $0x18,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret
lea    0xdde(%rip),%rdi
call   1070 <perror@plt>
mov    0x2da2(%rip),%rax
mov    (%rax),%edi
call   1090 <exit@plt>
lea    0xdd5(%rip),%rdi
jmp    124e <bind_local+0xce>
lea    0xdd6(%rip),%rdi
jmp    124e <bind_local+0xce>
lea    0xdd2(%rip),%rdi
call   1070 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>

LLVM IR (-O0):
%struct.sockaddr_in = type { i32, i32, i32 }
%struct.sockaddr = type { i32 }
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@.str = [7 x i8] c"socket\00"
@EXIT_FAILURE = global i32 0
@.str.1 = [10 x i8] c"127.0.0.1\00"
@.str.2 = [10 x i8] c"inet_pton\00"
@.str.3 = [5 x i8] c"bind\00"
@.str.4 = [7 x i8] c"listen\00"
define i32 @bind_local(i32 %0) {
%2 = alloca i32
%3 = alloca i32
%4 = alloca %struct.sockaddr_in
store i32 %0, i32* %2
%5 = load i32, i32* @AF_INET
%6 = load i32, i32* @SOCK_STREAM
%7 = call i32 @socket(i32 %5, i32 %6, i32 0)
store i32 %7, i32* %3
%8 = load i32, i32* %3
%9 = icmp slt i32 %8, 0
br i1 %9, label %10, label %14
10: ; preds = %1
%11 = call i32 @perror(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0))
%12 = load i32, i32* @EXIT_FAILURE
%13 = call i32 @exit(i32 %12)
unreachable
14: ; preds = %1
%15 = call i32 @bzero(%struct.sockaddr_in* %4, 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* %2
%19 = call i32 @htons(i32 %18)
%20 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %4, i32 0, i32 1
store i32 %19, i32* %20
%21 = load i32, i32* @AF_INET
%22 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %4, i32 0, i32 0
%23 = call i64 @inet_pton(i32 %21, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i32* %22)
%24 = icmp sle i64 %23, 0
br i1 %24, label %25, label %28
25: ; preds = %14
%26 = call i32 @perror(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.2, i64 0, i64 0))
%27 = call i32 @exit(i32 1)
unreachable
28: ; preds = %14
%29 = load i32, i32* %3
%30 = bitcast %struct.sockaddr_in* %4 to %struct.sockaddr*
%31 = call i64 @bind(i32 %29, %struct.sockaddr* %30, i32 12)
%32 = icmp slt i64 %31, 0
br i1 %32, label %33, label %36
33: ; preds = %28
%34 = call i32 @perror(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%35 = call i32 @exit(i32 1)
unreachable
36: ; preds = %28
%37 = load i32, i32* %3
%38 = call i64 @listen(i32 %37, i32 128)
%39 = icmp slt i64 %38, 0
br i1 %39, label %40, label %43
40: ; preds = %36
%41 = call i32 @perror(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.4, i64 0, i64 0))
%42 = call i32 @exit(i32 1)
unreachable
43: ; preds = %36
%44 = load i32, i32* %3
ret i32 %44
}

LLVM IR (-O2):
%struct.sockaddr_in = type { i32, i32, i32 }
%struct.sockaddr = type { i32 }
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@.str = [7 x i8] c"socket\00"
@EXIT_FAILURE = global i32 0
@.str.1 = [10 x i8] c"127.0.0.1\00"
@.str.2 = [10 x i8] c"inet_pton\00"
@.str.3 = [5 x i8] c"bind\00"
@.str.4 = [7 x i8] c"listen\00"
define i32 @bind_local(i32 %0) {
%2 = alloca %struct.sockaddr_in
%3 = bitcast %struct.sockaddr_in* %2 to i8*
%4 = load i32, i32* @AF_INET
%5 = load i32, i32* @SOCK_STREAM
%6 = tail call i32 @socket(i32 %4, i32 %5, i32 0)
%7 = icmp slt i32 %6, 0
br i1 %7, label %8, label %12
8: ; preds = %1
%9 = tail call i32 @perror(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0))
%10 = load i32, i32* @EXIT_FAILURE
%11 = tail call i32 @exit(i32 %10)
unreachable
12: ; preds = %1
%13 = call i32 @bzero(%struct.sockaddr_in* %2, i32 12)
%14 = load i32, i32* @AF_INET
%15 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %2, i64 0, i32 2
store i32 %14, i32* %15
%16 = tail call i32 @htons(i32 %0)
%17 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %2, i64 0, i32 1
store i32 %16, i32* %17
%18 = load i32, i32* @AF_INET
%19 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %2, i64 0, i32 0
%20 = call i64 @inet_pton(i32 %18, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i32* %19)
%21 = icmp slt i64 %20, 1
br i1 %21, label %22, label %25
22: ; preds = %12
%23 = call i32 @perror(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.2, i64 0, i64 0))
%24 = call i32 @exit(i32 1)
unreachable
25: ; preds = %12
%26 = bitcast %struct.sockaddr_in* %2 to %struct.sockaddr*
%27 = call i64 @bind(i32 %6, %struct.sockaddr* %26, i32 12)
%28 = icmp slt i64 %27, 0
br i1 %28, label %29, label %32
29: ; preds = %25
%30 = call i32 @perror(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%31 = call i32 @exit(i32 1)
unreachable
32: ; preds = %25
%33 = call i64 @listen(i32 %6, i32 128)
%34 = icmp slt i64 %33, 0
br i1 %34, label %35, label %38
35: ; preds = %32
%36 = call i32 @perror(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.4, i64 0, i64 0))
%37 = call i32 @exit(i32 1)
unreachable
38: ; preds = %32
ret i32 %6
}