#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 {
  TYPE_1__ sin_addr;
  int /*<<< orphan*/ sin_port;
  int /*<<< orphan*/ sin_family;
};
struct sockaddr {
  int dummy;
};

/* Variables and functions */
int /*<<< orphan*/ AF_INET;
int /*<<< orphan*/ INADDR_ANY;
int bind(int, struct sockaddr *, int);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ htons(int);
int /*<<< orphan*/ memset(struct sockaddr_in *, int /*<<< orphan*/, int);
int /*<<< orphan*/ perror(char *);
void socket_bind(int server, int port) {
  int res;
  struct sockaddr_in addr;
  memset(&addr, 0, sizeof(struct sockaddr_in));
  addr.sin_family = AF_INET;
  addr.sin_port = htons(port);
  addr.sin_addr.s_addr = INADDR_ANY;
  res = bind(server, (struct sockaddr *)&addr, sizeof(struct sockaddr));
  if (res < 0) {
    perror("could not open server port");
    exit(1);
  }
}


x86 assembly (clang, -O0):
<socket_bind>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x4(%rbp)
mov    %esi,-0x8(%rbp)
lea    -0x18(%rbp),%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1040 <memset@plt>
mov    0x2e73(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x10(%rbp)
mov    -0x8(%rbp),%edi
call   1030 <htons@plt>
mov    %eax,-0x14(%rbp)
mov    0x2e54(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x18(%rbp)
mov    -0x4(%rbp),%edi
lea    -0x18(%rbp),%rsi
mov    $0x4,%edx
call   1050 <bind@plt>
mov    %eax,-0xc(%rbp)
cmpl   $0x0,-0xc(%rbp)
jge    11c5 <socket_bind+0x75>
lea    0xe4a(%rip),%rdi
call   1060 <perror@plt>
mov    $0x1,%edi
call   1070 <exit@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<socket_bind>:
push   %rbp
push   %r14
push   %rbx
sub    $0x10,%rsp
mov    %esi,%ebx
mov    %edi,%ebp
mov    %rsp,%r14
mov    %r14,%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1040 <memset@plt>
mov    0x2e73(%rip),%rax
mov    (%rax),%eax
mov    %eax,0x8(%rsp)
mov    %ebx,%edi
call   1030 <htons@plt>
mov    %eax,0x4(%rsp)
mov    0x2e53(%rip),%rax
mov    (%rax),%eax
mov    %eax,(%rsp)
mov    %ebp,%edi
mov    %r14,%rsi
mov    $0x4,%edx
call   1050 <bind@plt>
test   %eax,%eax
js     11ae <socket_bind+0x5e>
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %rbp
ret
lea    0xe4b(%rip),%rdi
call   1060 <perror@plt>
mov    $0x1,%edi
call   1070 <exit@plt>

LLVM IR (-O0):
%struct.sockaddr_in = type { %struct.TYPE_2__, i32, i32 }
%struct.TYPE_2__ = type { i32 }
%struct.sockaddr = type { i32 }
@AF_INET = global i32 0
@INADDR_ANY = global i32 0
@.str = [27 x i8] c"could not open server port\00"
define void @socket_bind(i32 %0, i32 %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = alloca %struct.sockaddr_in
store i32 %0, i32* %3
store i32 %1, i32* %4
%7 = call i32 @memset(%struct.sockaddr_in* %6, i32 0, i32 12)
%8 = load i32, i32* @AF_INET
%9 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %6, i32 0, i32 2
store i32 %8, i32* %9
%10 = load i32, i32* %4
%11 = call i32 @htons(i32 %10)
%12 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %6, i32 0, i32 1
store i32 %11, i32* %12
%13 = load i32, i32* @INADDR_ANY
%14 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %6, i32 0, i32 0
%15 = getelementptr inbounds %struct.TYPE_2__, %struct.TYPE_2__* %14, i32 0, i32 0
store i32 %13, i32* %15
%16 = load i32, i32* %3
%17 = bitcast %struct.sockaddr_in* %6 to %struct.sockaddr*
%18 = call i32 @bind(i32 %16, %struct.sockaddr* %17, i32 4)
store i32 %18, i32* %5
%19 = load i32, i32* %5
%20 = icmp slt i32 %19, 0
br i1 %20, label %21, label %24
21: ; preds = %2
%22 = call i32 @perror(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%23 = call i32 @exit(i32 1)
unreachable
24: ; preds = %2
ret void
}

LLVM IR (-O2):
%struct.sockaddr_in = type { %struct.TYPE_2__, i32, i32 }
%struct.TYPE_2__ = type { i32 }
%struct.sockaddr = type { i32 }
@AF_INET = global i32 0
@INADDR_ANY = global i32 0
@.str = [27 x i8] c"could not open server port\00"
define void @socket_bind(i32 %0, i32 %1) {
%3 = alloca %struct.sockaddr_in
%4 = bitcast %struct.sockaddr_in* %3 to i8*
%5 = call i32 @memset(%struct.sockaddr_in* %3, i32 0, i32 12)
%6 = load i32, i32* @AF_INET
%7 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 2
store i32 %6, i32* %7
%8 = call i32 @htons(i32 %1)
%9 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 1
store i32 %8, i32* %9
%10 = load i32, i32* @INADDR_ANY
%11 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 0, i32 0
store i32 %10, i32* %11
%12 = bitcast %struct.sockaddr_in* %3 to %struct.sockaddr*
%13 = call i32 @bind(i32 %0, %struct.sockaddr* %12, i32 4)
%14 = icmp slt i32 %13, 0
br i1 %14, label %15, label %18
15: ; preds = %2
%16 = call i32 @perror(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%17 = call i32 @exit(i32 1)
unreachable
18: ; preds = %2
ret void
}