#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 *fname) {
  printf("\nUsage: %s [options]\n", fname);
  printf("Options are:\n");
  printf("   -i         # dump header info in file\n");
  printf("   -d         # dump data in file\n");
  printf("   -h         # print help and usage\n");
  printf("   -o filename # export output to PCAP file\n");
  printf("   -s ip_src   # filter packets by IP source\n");
  printf("   -t ip_dst   # filter packets by IP destination\n");
  printf("   -p port_src # filter packets by source port\n");
  printf("                 will filter TCP and UDP only\n");
  printf("   -q port_src # filter packets by destination port\n");
  printf("                 will filter TCP and UDP only\n");
  printf("   -l ttl_min  # filter packets by minimun TTL\n");
  printf("   -m ttl_max  # filter packets by maximum TTL\n");
  printf("   -f frag_min # filter packets by minimum fragment number\n");
  printf("   -g frag_max # filter packets by maximun fragment number\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    0xee1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xee1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xefd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf12(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf2a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf49(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf69(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf8e(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xfb0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xfd1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf94(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xfea(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0x100c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0x102e(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0x105c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe1b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rbx
mov    %rdi,%rsi
lea    0xec5(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xecd(%rip),%rdi
call   1040 <puts@plt>
lea    0xece(%rip),%rdi
call   1040 <puts@plt>
lea    0xeeb(%rip),%rdi
call   1040 <puts@plt>
lea    0xf01(%rip),%rdi
call   1040 <puts@plt>
lea    0xf1a(%rip),%rdi
call   1040 <puts@plt>
lea    0xf3a(%rip),%rdi
call   1040 <puts@plt>
lea    0xf5b(%rip),%rdi
call   1040 <puts@plt>
lea    0xf81(%rip),%rdi
call   1040 <puts@plt>
lea    0xfd8(%rip),%rbx
mov    %rbx,%rdi
call   1040 <puts@plt>
lea    0xf95(%rip),%rdi
call   1040 <puts@plt>
mov    %rbx,%rdi
call   1040 <puts@plt>
lea    0xfe3(%rip),%rdi
call   1040 <puts@plt>
lea    0x1006(%rip),%rdi
call   1040 <puts@plt>
lea    0x1029(%rip),%rdi
call   1040 <puts@plt>
lea    0x1058(%rip),%rdi
call   1040 <puts@plt>
mov    $0xa,%edi
pop    %rbx
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [22 x i8] c"\0AUsage: %s [options]\0A\00"
@.str.1 = [14 x i8] c"Options are:\0A\00"
@.str.2 = [42 x i8] c" -i # dump header info in file\0A\00"
@.str.3 = [35 x i8] c" -d # dump data in file\0A\00"
@.str.4 = [38 x i8] c" -h # print help and usage\0A\00"
@.str.5 = [45 x i8] c" -o filename # export output to PCAP file\0A\00"
@.str.6 = [46 x i8] c" -s ip_src # filter packets by IP source\0A\00"
@.str.7 = [51 x i8] c" -t ip_dst # filter packets by IP destination\0A\00"
@.str.8 = [48 x i8] c" -p port_src # filter packets by source port\0A\00"
@.str.9 = [47 x i8] c" will filter TCP and UDP only\0A\00"
@.str.10 = [53 x i8] c" -q port_src # filter packets by destination port\0A\00"
@.str.11 = [48 x i8] c" -l ttl_min # filter packets by minimun TTL\0A\00"
@.str.12 = [48 x i8] c" -m ttl_max # filter packets by maximum TTL\0A\00"
@.str.13 = [60 x i8] c" -f frag_min # filter packets by minimum fragment number\0A\00"
@.str.14 = [60 x i8] c" -g frag_max # filter packets by maximun fragment number\0A\00"
@.str.15 = [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 ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0))
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([38 x i8], [38 x i8]* @.str.4, i64 0, i64 0))
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([45 x i8], [45 x i8]* @.str.5, i64 0, i64 0))
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str.6, i64 0, i64 0))
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([51 x i8], [51 x i8]* @.str.7, i64 0, i64 0))
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([48 x i8], [48 x i8]* @.str.8, i64 0, i64 0))
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.9, i64 0, i64 0))
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([53 x i8], [53 x i8]* @.str.10, i64 0, i64 0))
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.9, i64 0, i64 0))
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([48 x i8], [48 x i8]* @.str.11, i64 0, i64 0))
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([48 x i8], [48 x i8]* @.str.12, i64 0, i64 0))
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @.str.13, i64 0, i64 0))
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @.str.14, i64 0, i64 0))
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.15, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [22 x i8] c"\0AUsage: %s [options]\0A\00"
@str = [13 x i8] c"Options are:\00"
@str.16 = [41 x i8] c" -i # dump header info in file\00"
@str.17 = [34 x i8] c" -d # dump data in file\00"
@str.18 = [37 x i8] c" -h # print help and usage\00"
@str.19 = [44 x i8] c" -o filename # export output to PCAP file\00"
@str.20 = [45 x i8] c" -s ip_src # filter packets by IP source\00"
@str.21 = [50 x i8] c" -t ip_dst # filter packets by IP destination\00"
@str.22 = [47 x i8] c" -p port_src # filter packets by source port\00"
@str.24 = [52 x i8] c" -q port_src # filter packets by destination port\00"
@str.25 = [46 x i8] c" will filter TCP and UDP only\00"
@str.26 = [47 x i8] c" -l ttl_min # filter packets by minimun TTL\00"
@str.27 = [47 x i8] c" -m ttl_max # filter packets by maximum TTL\00"
@str.28 = [59 x i8] c" -f frag_min # filter packets by minimum fragment number\00"
@str.29 = [59 x i8] c" -g frag_max # filter packets by maximun fragment number\00"
define void @usage(i8* %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i8* %0)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([41 x i8], [41 x i8]* @str.16, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([34 x i8], [34 x i8]* @str.17, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([37 x i8], [37 x i8]* @str.18, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([44 x i8], [44 x i8]* @str.19, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([45 x i8], [45 x i8]* @str.20, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([50 x i8], [50 x i8]* @str.21, i64 0, i64 0))
%10 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([47 x i8], [47 x i8]* @str.22, i64 0, i64 0))
%11 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @str.25, i64 0, i64 0))
%12 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([52 x i8], [52 x i8]* @str.24, i64 0, i64 0))
%13 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @str.25, i64 0, i64 0))
%14 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([47 x i8], [47 x i8]* @str.26, i64 0, i64 0))
%15 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([47 x i8], [47 x i8]* @str.27, i64 0, i64 0))
%16 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([59 x i8], [59 x i8]* @str.28, i64 0, i64 0))
%17 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([59 x i8], [59 x i8]* @str.29, i64 0, i64 0))
%18 = tail call i32 @putchar(i32 10)
ret void
}