#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*/ serv_addr;

/* Variables and functions */
int /*<<< orphan*/ AF_INET;
int /*<<< orphan*/ SOCK_STREAM;
int /*<<< orphan*/ atoi(char *);
int /*<<< orphan*/ close(int);
int connect(int, struct sockaddr *, int);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ htons(int /*<<< orphan*/);
int /*<<< orphan*/ inet_addr(char *);
int /*<<< orphan*/ memset(struct sockaddr_in *, int /*<<< orphan*/, int);
int /*<<< orphan*/ perror(char *);
int read(int, char *, int);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int /*<<< orphan*/ stderr;
int write(int, char *, int);
int main(int argc, char *argv[]) {
  int sock;
  struct sockaddr_in serv_addr;
  int mslen;
  char msg[1024];
  if (argc != 3) {
    fprintf(stderr, "Usage: %s <host> <port>\n", argv[0]);
    exit(1);
  }
  sock = socket(AF_INET, SOCK_STREAM, 0);
  if (sock == -1) {
    perror("socket() failed");
    exit(1);
  };
  memset(&serv_addr, 0, sizeof(serv_addr));
  serv_addr.sin_family = AF_INET;
  serv_addr.sin_addr.s_addr = inet_addr(argv[1]);
  serv_addr.sin_port = htons(atoi(argv[2]));
  if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) == -1) {
    perror("connect() failed");
    exit(1);
  };
  mslen = read(sock, msg, 1024);
  if (mslen == -1) {
    perror("read() failed");
    exit(1);
  };
  if (write(1, msg, mslen) != mslen) {
    perror("write() failed");
    exit(1);
  };
  close(sock);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x430,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x3,-0x8(%rbp)
je     1209 <main+0x49>
mov    0x2dee(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe06(%rip),%rsi
call   1090 <fprintf@plt>
mov    $0x1,%edi
call   10c0 <exit@plt>
mov    0x2dd8(%rip),%rax
mov    (%rax),%edi
mov    0x2db7(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   10e0 <socket@plt>
mov    %eax,-0x14(%rbp)
cmpl   $0xffffffff,-0x14(%rbp)
jne    1245 <main+0x85>
lea    0xde3(%rip),%rdi
call   10a0 <perror@plt>
mov    $0x1,%edi
call   10c0 <exit@plt>
lea    -0x20(%rbp),%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1050 <memset@plt>
mov    0x2d8c(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x18(%rbp)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1080 <inet_addr@plt>
mov    %eax,-0x1c(%rbp)
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   10b0 <atoi@plt>
mov    %eax,%edi
call   1040 <htons@plt>
mov    %eax,-0x20(%rbp)
mov    -0x14(%rbp),%edi
lea    -0x20(%rbp),%rsi
mov    $0xc,%edx
call   10d0 <connect@plt>
cmp    $0xffffffff,%eax
jne    12b8 <main+0xf8>
lea    0xd80(%rip),%rdi
call   10a0 <perror@plt>
mov    $0x1,%edi
call   10c0 <exit@plt>
mov    -0x14(%rbp),%edi
lea    -0x430(%rbp),%rsi
mov    $0x400,%edx
call   1070 <read@plt>
mov    %eax,-0x24(%rbp)
cmpl   $0xffffffff,-0x24(%rbp)
jne    12ef <main+0x12f>
lea    0xd5a(%rip),%rdi
call   10a0 <perror@plt>
mov    $0x1,%edi
call   10c0 <exit@plt>
lea    -0x430(%rbp),%rsi
mov    -0x24(%rbp),%edx
mov    $0x1,%edi
call   1030 <write@plt>
cmp    -0x24(%rbp),%eax
je     1322 <main+0x162>
lea    0xd35(%rip),%rdi
call   10a0 <perror@plt>
mov    $0x1,%edi
call   10c0 <exit@plt>
mov    -0x14(%rbp),%edi
call   1060 <close@plt>
xor    %eax,%eax
add    $0x430,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
sub    $0x418,%rsp
mov    %rsi,%r14
cmp    $0x3,%edi
jne    128f <main+0xcf>
mov    0x2e08(%rip),%rbp
mov    0x0(%rbp),%edi
mov    0x2de6(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   10e0 <socket@plt>
cmp    $0xffffffff,%eax
je     12b1 <main+0xf1>
mov    %eax,%ebx
mov    %rsp,%r15
mov    %r15,%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1050 <memset@plt>
mov    0x0(%rbp),%eax
mov    %eax,0x8(%rsp)
mov    0x8(%r14),%rdi
call   1080 <inet_addr@plt>
mov    %eax,0x4(%rsp)
mov    0x10(%r14),%rdi
call   10b0 <atoi@plt>
mov    %eax,%edi
call   1040 <htons@plt>
mov    %eax,(%rsp)
mov    %ebx,%edi
mov    %r15,%rsi
mov    $0xc,%edx
call   10d0 <connect@plt>
cmp    $0xffffffff,%eax
je     12ba <main+0xfa>
lea    0x10(%rsp),%rsi
mov    %ebx,%edi
mov    $0x400,%edx
call   1070 <read@plt>
cmp    $0xffffffff,%eax
je     12c3 <main+0x103>
mov    %eax,%ebp
lea    0x10(%rsp),%rsi
mov    $0x1,%edi
mov    %eax,%edx
call   1030 <write@plt>
cmp    %ebp,%eax
jne    12cc <main+0x10c>
mov    %ebx,%edi
call   1060 <close@plt>
xor    %eax,%eax
add    $0x418,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret
mov    0x2d42(%rip),%rax
mov    (%rax),%edi
mov    (%r14),%rdx
lea    0xd5e(%rip),%rsi
call   1090 <fprintf@plt>
mov    $0x1,%edi
call   10c0 <exit@plt>
lea    0xd61(%rip),%rdi
jmp    12d3 <main+0x113>
lea    0xd68(%rip),%rdi
jmp    12d3 <main+0x113>
lea    0xd70(%rip),%rdi
jmp    12d3 <main+0x113>
lea    0xd75(%rip),%rdi
call   10a0 <perror@plt>
mov    $0x1,%edi
call   10c0 <exit@plt>

LLVM IR (-O0):
%struct.sockaddr_in = type { i32, %struct.TYPE_2__, i32 }
%struct.TYPE_2__ = type { i32 }
%struct.sockaddr = type { i32 }
@stderr = global i32 0
@.str = [25 x i8] c"Usage: %s <host> <port>\0A\00"
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@.str.1 = [16 x i8] c"socket() failed\00"
@.str.2 = [17 x i8] c"connect() failed\00"
@.str.3 = [14 x i8] c"read() failed\00"
@.str.4 = [15 x i8] c"write() failed\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca %struct.sockaddr_in
%8 = alloca i32
%9 = alloca [1024 x i8]
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%10 = load i32, i32* %4
%11 = icmp ne i32 %10, 3
br i1 %11, label %12, label %19
12: ; preds = %2
%13 = load i32, i32* @stderr
%14 = load i8**, i8*** %5
%15 = getelementptr inbounds i8*, i8** %14, i64 0
%16 = load i8*, i8** %15
%17 = call i32 @fprintf(i32 %13, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0), i8* %16)
%18 = call i32 @exit(i32 1)
unreachable
19: ; preds = %2
%20 = load i32, i32* @AF_INET
%21 = load i32, i32* @SOCK_STREAM
%22 = call i32 @socket(i32 %20, i32 %21, i32 0)
store i32 %22, i32* %6
%23 = load i32, i32* %6
%24 = icmp eq i32 %23, -1
br i1 %24, label %25, label %28
25: ; preds = %19
%26 = call i32 @perror(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0))
%27 = call i32 @exit(i32 1)
unreachable
28: ; preds = %19
%29 = call i32 @memset(%struct.sockaddr_in* %7, i32 0, i32 12)
%30 = load i32, i32* @AF_INET
%31 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %7, i32 0, i32 2
store i32 %30, i32* %31
%32 = load i8**, i8*** %5
%33 = getelementptr inbounds i8*, i8** %32, i64 1
%34 = load i8*, i8** %33
%35 = call i32 @inet_addr(i8* %34)
%36 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %7, i32 0, i32 1
%37 = getelementptr inbounds %struct.TYPE_2__, %struct.TYPE_2__* %36, i32 0, i32 0
store i32 %35, i32* %37
%38 = load i8**, i8*** %5
%39 = getelementptr inbounds i8*, i8** %38, i64 2
%40 = load i8*, i8** %39
%41 = call i32 @atoi(i8* %40)
%42 = call i32 @htons(i32 %41)
%43 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %7, i32 0, i32 0
store i32 %42, i32* %43
%44 = load i32, i32* %6
%45 = bitcast %struct.sockaddr_in* %7 to %struct.sockaddr*
%46 = call i32 @connect(i32 %44, %struct.sockaddr* %45, i32 12)
%47 = icmp eq i32 %46, -1
br i1 %47, label %48, label %51
48: ; preds = %28
%49 = call i32 @perror(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.2, i64 0, i64 0))
%50 = call i32 @exit(i32 1)
unreachable
51: ; preds = %28
%52 = load i32, i32* %6
%53 = getelementptr inbounds [1024 x i8], [1024 x i8]* %9, i64 0, i64 0
%54 = call i32 @read(i32 %52, i8* %53, i32 1024)
store i32 %54, i32* %8
%55 = load i32, i32* %8
%56 = icmp eq i32 %55, -1
br i1 %56, label %57, label %60
57: ; preds = %51
%58 = call i32 @perror(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.3, i64 0, i64 0))
%59 = call i32 @exit(i32 1)
unreachable
60: ; preds = %51
%61 = getelementptr inbounds [1024 x i8], [1024 x i8]* %9, i64 0, i64 0
%62 = load i32, i32* %8
%63 = call i32 @write(i32 1, i8* %61, i32 %62)
%64 = load i32, i32* %8
%65 = icmp ne i32 %63, %64
br i1 %65, label %66, label %69
66: ; preds = %60
%67 = call i32 @perror(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.4, i64 0, i64 0))
%68 = call i32 @exit(i32 1)
unreachable
69: ; preds = %60
%70 = load i32, i32* %6
%71 = call i32 @close(i32 %70)
ret i32 0
}

LLVM IR (-O2):
%struct.sockaddr_in = type { i32, %struct.TYPE_2__, i32 }
%struct.TYPE_2__ = type { i32 }
%struct.sockaddr = type { i32 }
@stderr = global i32 0
@.str = [25 x i8] c"Usage: %s <host> <port>\0A\00"
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@.str.1 = [16 x i8] c"socket() failed\00"
@.str.2 = [17 x i8] c"connect() failed\00"
@.str.3 = [14 x i8] c"read() failed\00"
@.str.4 = [15 x i8] c"write() failed\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = alloca %struct.sockaddr_in
%4 = alloca [1024 x i8]
%5 = bitcast %struct.sockaddr_in* %3 to i8*
%6 = getelementptr inbounds [1024 x i8], [1024 x i8]* %4, i64 0, i64 0
%7 = icmp eq i32 %0, 3
br i1 %7, label %13, label %8
8: ; preds = %2
%9 = load i32, i32* @stderr
%10 = load i8*, i8** %1
%11 = tail call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0), i8* %10)
%12 = tail call i32 @exit(i32 1)
unreachable
13: ; preds = %2
%14 = load i32, i32* @AF_INET
%15 = load i32, i32* @SOCK_STREAM
%16 = tail call i32 @socket(i32 %14, i32 %15, i32 0)
%17 = icmp eq i32 %16, -1
br i1 %17, label %18, label %21
18: ; preds = %13
%19 = tail call i32 @perror(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0))
%20 = tail call i32 @exit(i32 1)
unreachable
21: ; preds = %13
%22 = call i32 @memset(%struct.sockaddr_in* %3, i32 0, i32 12)
%23 = load i32, i32* @AF_INET
%24 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 2
store i32 %23, i32* %24
%25 = getelementptr inbounds i8*, i8** %1, i64 1
%26 = load i8*, i8** %25
%27 = call i32 @inet_addr(i8* %26)
%28 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 1, i32 0
store i32 %27, i32* %28
%29 = getelementptr inbounds i8*, i8** %1, i64 2
%30 = load i8*, i8** %29
%31 = call i32 @atoi(i8* %30)
%32 = call i32 @htons(i32 %31)
%33 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 0
store i32 %32, i32* %33
%34 = bitcast %struct.sockaddr_in* %3 to %struct.sockaddr*
%35 = call i32 @connect(i32 %16, %struct.sockaddr* %34, i32 12)
%36 = icmp eq i32 %35, -1
br i1 %36, label %37, label %40
37: ; preds = %21
%38 = call i32 @perror(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.2, i64 0, i64 0))
%39 = call i32 @exit(i32 1)
unreachable
40: ; preds = %21
%41 = call i32 @read(i32 %16, i8* %6, i32 1024)
%42 = icmp eq i32 %41, -1
br i1 %42, label %43, label %46
43: ; preds = %40
%44 = call i32 @perror(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.3, i64 0, i64 0))
%45 = call i32 @exit(i32 1)
unreachable
46: ; preds = %40
%47 = call i32 @write(i32 1, i8* %6, i32 %41)
%48 = icmp eq i32 %47, %41
br i1 %48, label %52, label %49
49: ; preds = %46
%50 = call i32 @perror(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.4, i64 0, i64 0))
%51 = call i32 @exit(i32 1)
unreachable
52: ; preds = %46
%53 = call i32 @close(i32 %16)
ret i32 0
}