#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 socklen_t;
typedef int /*<<< orphan*/ optval;

/* Variables and functions */
int /*<<< orphan*/ AF_INET;
int EXIT_FAILURE;
int EXIT_SUCCESS;
int /*<<< orphan*/ IPPROTO_TCP;
int /*<<< orphan*/ SOCK_STREAM;
int /*<<< orphan*/ SO_REUSEADDR;
int /*<<< orphan*/ errno;
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int getsockopt(int, int, int /*<<< orphan*/, int *, int *);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int /*<<< orphan*/ stderr;
char *strerror(int /*<<< orphan*/);
int main(void) {
  int sock;
  if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
    fprintf(stderr, "socket() failed: %s\n.", strerror(errno));
    return (EXIT_FAILURE);
  }
  int optval;
  socklen_t optlen = sizeof(optval);
  if (getsockopt(sock, -42, SO_REUSEADDR, &optval, &optlen) != -1)
    return (EXIT_FAILURE);
  return (EXIT_SUCCESS);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    0x2e92(%rip),%rax
mov    (%rax),%edi
mov    0x2e69(%rip),%rax
mov    (%rax),%esi
mov    0x2e78(%rip),%rax
mov    (%rax),%edx
call   1060 <socket@plt>
mov    %eax,-0x8(%rbp)
cmp    $0x0,%eax
jge    11b8 <main+0x78>
mov    0x2e4e(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x14(%rbp)
mov    0x2e32(%rip),%rax
mov    (%rax),%edi
call   1050 <strerror@plt>
mov    -0x14(%rbp),%edi
mov    %rax,%rdx
lea    0xe5e(%rip),%rsi
call   1040 <fprintf@plt>
mov    0x2e0a(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x4(%rbp)
jmp    1203 <main+0xc3>
movl   $0x4,-0x10(%rbp)
mov    -0x8(%rbp),%edi
mov    0x2ddf(%rip),%rax
mov    (%rax),%edx
mov    $0xffffffd6,%esi
lea    -0xc(%rbp),%rcx
lea    -0x10(%rbp),%r8
call   1030 <getsockopt@plt>
cmp    $0xffffffff,%eax
je     11f7 <main+0xb7>
mov    0x2dcb(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x4(%rbp)
jmp    1203 <main+0xc3>
mov    0x2db2(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
mov    0x2e9c(%rip),%rax
mov    (%rax),%edi
mov    0x2e73(%rip),%rax
mov    (%rax),%esi
mov    0x2e82(%rip),%rax
mov    (%rax),%edx
call   1060 <socket@plt>
test   %eax,%eax
js     119e <main+0x5e>
movl   $0x4,0x8(%rsp)
mov    0x2e30(%rip),%rcx
mov    (%rcx),%edx
lea    0xc(%rsp),%rcx
lea    0x8(%rsp),%r8
mov    %eax,%edi
mov    $0xffffffd6,%esi
call   1030 <getsockopt@plt>
cmp    $0xffffffff,%eax
jne    11c6 <main+0x86>
mov    0x2e14(%rip),%rax
jmp    11cd <main+0x8d>
mov    0x2e2b(%rip),%rax
mov    (%rax),%ebx
mov    0x2e12(%rip),%rax
mov    (%rax),%edi
call   1050 <strerror@plt>
lea    0xe44(%rip),%rsi
mov    %ebx,%edi
mov    %rax,%rdx
call   1040 <fprintf@plt>
mov    0x2deb(%rip),%rax
mov    (%rax),%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@IPPROTO_TCP = global i32 0
@stderr = global i32 0
@.str = [22 x i8] c"socket() failed: %s\0A.\00"
@errno = global i32 0
@EXIT_FAILURE = global i32 0
@SO_REUSEADDR = global i32 0
@EXIT_SUCCESS = global i32 0
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
store i32 0, i32* %1
%5 = load i32, i32* @AF_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* %2
%9 = icmp slt i32 %8, 0
br i1 %9, label %10, label %16
10: ; preds = %0
%11 = load i32, i32* @stderr
%12 = load i32, i32* @errno
%13 = call i8* @strerror(i32 %12)
%14 = call i32 @fprintf(i32 %11, i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i8* %13)
%15 = load i32, i32* @EXIT_FAILURE
store i32 %15, i32* %1
br label %25
16: ; preds = %0
store i32 4, i32* %4
%17 = load i32, i32* %2
%18 = load i32, i32* @SO_REUSEADDR
%19 = call i32 @getsockopt(i32 %17, i32 -42, i32 %18, i32* %3, i32* %4)
%20 = icmp ne i32 %19, -1
br i1 %20, label %21, label %23
21: ; preds = %16
%22 = load i32, i32* @EXIT_FAILURE
store i32 %22, i32* %1
br label %25
23: ; preds = %16
%24 = load i32, i32* @EXIT_SUCCESS
store i32 %24, i32* %1
br label %25
25: ; preds = %23, %21, %10
%26 = load i32, i32* %1
ret i32 %26
}

LLVM IR (-O2):
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@IPPROTO_TCP = global i32 0
@stderr = global i32 0
@.str = [22 x i8] c"socket() failed: %s\0A.\00"
@errno = global i32 0
@EXIT_FAILURE = global i32 0
@SO_REUSEADDR = global i32 0
@EXIT_SUCCESS = global i32 0
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = load i32, i32* @AF_INET
%4 = load i32, i32* @SOCK_STREAM
%5 = load i32, i32* @IPPROTO_TCP
%6 = tail call i32 @socket(i32 %3, i32 %4, i32 %5)
%7 = icmp slt i32 %6, 0
br i1 %7, label %8, label %14
8: ; preds = %0
%9 = load i32, i32* @stderr
%10 = load i32, i32* @errno
%11 = tail call i8* @strerror(i32 %10)
%12 = tail call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i8* %11)
%13 = load i32, i32* @EXIT_FAILURE
br label %23
14: ; preds = %0
%15 = bitcast i32* %1 to i8*
%16 = bitcast i32* %2 to i8*
store i32 4, i32* %2
%17 = load i32, i32* @SO_REUSEADDR
%18 = call i32 @getsockopt(i32 %6, i32 -42, i32 %17, i32* %1, i32* %2)
%19 = icmp eq i32 %18, -1
%20 = load i32, i32* @EXIT_SUCCESS
%21 = load i32, i32* @EXIT_FAILURE
%22 = select i1 %19, i32 %20, i32 %21
br label %23
23: ; preds = %14, %8
%24 = phi i32 [ %13, %8 ], [ %22, %14 ]
ret i32 %24
}