#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 */

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
void usage(char *progname) {
  printf("%s: simpleVPN client application\n\n", progname);
  printf("\t-s <server ip>\tRequired. Specify server address\n");
  printf("\t-a <local ip>\tOptional. Request static address on the VPN\n");
  printf("\t-p <port>\tOptional. Specify port that the server listens on.\n");
  printf("\t-u\t\tOptional. Use UDP instead of TCP. NOT IMPLEMENTED.\n");
  printf("\n");
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rsi
lea    0xed9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeee(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf12(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf40(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf71(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeb4(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rax
mov    %rdi,%rsi
lea    0xec5(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xeda(%rip),%rdi
call   1040 <puts@plt>
lea    0xeff(%rip),%rdi
call   1040 <puts@plt>
lea    0xf2e(%rip),%rdi
call   1040 <puts@plt>
lea    0xf60(%rip),%rdi
call   1040 <puts@plt>
mov    $0xa,%edi
pop    %rax
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [35 x i8] c"%s: simpleVPN client application\0A\0A\00"
@.str.1 = [50 x i8] c"\09-s <server ip>\09Required. Specify server address\0A\00"
@.str.2 = [60 x i8] c"\09-a <local ip>\09Optional. Request static address on the VPN\0A\00"
@.str.3 = [63 x i8] c"\09-p <port>\09Optional. Specify port that the server listens on.\0A\00"
@.str.4 = [57 x i8] c"\09-u\09\09Optional. Use UDP instead of TCP. NOT IMPLEMENTED.\0A\00"
@.str.5 = [2 x i8] c"\0A\00"
define void @usage(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i8*, i8** %2
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([50 x i8], [50 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([63 x i8], [63 x i8]* @.str.3, i64 0, i64 0))
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([57 x i8], [57 x i8]* @.str.4, i64 0, i64 0))
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.5, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [35 x i8] c"%s: simpleVPN client application\0A\0A\00"
@str = [49 x i8] c"\09-s <server ip>\09Required. Specify server address\00"
@str.6 = [59 x i8] c"\09-a <local ip>\09Optional. Request static address on the VPN\00"
@str.7 = [62 x i8] c"\09-p <port>\09Optional. Specify port that the server listens on.\00"
@str.8 = [56 x i8] c"\09-u\09\09Optional. Use UDP instead of TCP. NOT IMPLEMENTED.\00"
define void @usage(i8* %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @.str, i64 0, i64 0), i8* %0)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([49 x i8], [49 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([59 x i8], [59 x i8]* @str.6, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([62 x i8], [62 x i8]* @str.7, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([56 x i8], [56 x i8]* @str.8, i64 0, i64 0))
%7 = tail call i32 @putchar(i32 10)
ret void
}