#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 **argv) {
  printf("\nVirtual Host checking system by Warren Rees\n");
  printf("Support for reverse dns and dns matching by Matt Watson\n\n");
  printf("Usage: %s [-amri]\n\n", argv[0]);
  printf("\t-a :  Show all ips\n");
  printf("\t-m :  Show only ips & hostname with matching forward and reverse "
         "dns\n");
  printf("\t-r :  Show only ips that have reverse dns but no forward dns\n");
  printf("\t-i :  Show only non-resolving ips no forward or reverse dns\n\n\n");
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
lea    0xedd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xefd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rax
mov    (%rax),%rsi
lea    0xf22(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf28(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf2f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf68(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf99(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rbx
mov    %rdi,%rbx
lea    0xee9(%rip),%rdi
call   1030 <puts@plt>
lea    0xf0a(%rip),%rdi
call   1030 <puts@plt>
mov    (%rbx),%rsi
lea    0xeba(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xf26(%rip),%rdi
call   1030 <puts@plt>
lea    0xf2e(%rip),%rdi
call   1030 <puts@plt>
lea    0xf68(%rip),%rdi
call   1030 <puts@plt>
lea    0xf9a(%rip),%rdi
pop    %rbx
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [46 x i8] c"\0AVirtual Host checking system by Warren Rees\0A\00"
@.str.1 = [58 x i8] c"Support for reverse dns and dns matching by Matt Watson\0A\0A\00"
@.str.2 = [20 x i8] c"Usage: %s [-amri]\0A\0A\00"
@.str.3 = [21 x i8] c"\09-a : Show all ips\0A\00"
@.str.4 = [71 x i8] c"\09-m : Show only ips & hostname with matching forward and reverse dns\0A\00"
@.str.5 = [63 x i8] c"\09-r : Show only ips that have reverse dns but no forward dns\0A\00"
@.str.6 = [64 x i8] c"\09-i : Show only non-resolving ips no forward or reverse dns\0A\0A\0A\00"
define void @usage(i8** %0) {
%2 = alloca i8**
store i8** %0, i8*** %2
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str, i64 0, i64 0))
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([58 x i8], [58 x i8]* @.str.1, i64 0, i64 0))
%5 = load i8**, i8*** %2
%6 = getelementptr inbounds i8*, i8** %5, i64 0
%7 = load i8*, i8** %6
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i8* %7)
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.3, i64 0, i64 0))
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([71 x i8], [71 x i8]* @.str.4, i64 0, i64 0))
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([63 x i8], [63 x i8]* @.str.5, i64 0, i64 0))
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([64 x i8], [64 x i8]* @.str.6, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str.2 = [20 x i8] c"Usage: %s [-amri]\0A\0A\00"
@str = [45 x i8] c"\0AVirtual Host checking system by Warren Rees\00"
@str.7 = [57 x i8] c"Support for reverse dns and dns matching by Matt Watson\0A\00"
@str.8 = [20 x i8] c"\09-a : Show all ips\00"
@str.9 = [70 x i8] c"\09-m : Show only ips & hostname with matching forward and reverse dns\00"
@str.10 = [62 x i8] c"\09-r : Show only ips that have reverse dns but no forward dns\00"
@str.11 = [63 x i8] c"\09-i : Show only non-resolving ips no forward or reverse dns\0A\0A\00"
define void @usage(i8** nocapture %0) {
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([45 x i8], [45 x i8]* @str, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([57 x i8], [57 x i8]* @str.7, i64 0, i64 0))
%4 = load i8*, i8** %0
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i8* %4)
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @str.8, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([70 x i8], [70 x i8]* @str.9, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([62 x i8], [62 x i8]* @str.10, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([63 x i8], [63 x i8]* @str.11, i64 0, i64 0))
ret void
}