#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(const char *const progName) {
  printf("\n");
  printf("Usage: %s [-i IP address] [-e ethx] [-p port]\n", progName);
  printf("\n");
  printf("       -h          Help.\n");
  printf("       -i          Specifies IP address of interface you want to "
         "listen to.\n");
  printf("       -e          Specifies the ethernet interface name you want to "
         "listen to.\n");
  printf(
      "       -p          Specifies port number of packets you want to see.\n");
  printf("\n");
  printf(
      "If no option is specified (they are all optional), then the program\n");
  printf("will listen on IPADDR_ANY (all interfaces), port 1025.");
  printf("\n");
  printf("\n");
}


x86 assembly (clang, -O0):
<Usage>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
lea    0x1008(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rsi
lea    0xecb(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xfe8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xede(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeea(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf29(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf6c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xfa2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf96(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xfcd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf78(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf6a(%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
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xebb(%rip),%rdi
mov    %rbx,%rsi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xf06(%rip),%rdi
call   1040 <puts@plt>
lea    0xf13(%rip),%rdi
call   1040 <puts@plt>
lea    0xf53(%rip),%rdi
call   1040 <puts@plt>
lea    0xf97(%rip),%rdi
call   1040 <puts@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xfc6(%rip),%rdi
call   1040 <puts@plt>
lea    0xe89(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    $0xa,%edi
pop    %rbx
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [2 x i8] c"\0A\00"
@.str.1 = [47 x i8] c"Usage: %s [-i IP address] [-e ethx] [-p port]\0A\00"
@.str.2 = [26 x i8] c" -h Help.\0A\00"
@.str.3 = [77 x i8] c" -i Specifies IP address of interface you want to listen to.\0A\00"
@.str.4 = [81 x i8] c" -e Specifies the ethernet interface name you want to listen to.\0A\00"
@.str.5 = [70 x i8] c" -p Specifies port number of packets you want to see.\0A\00"
@.str.6 = [69 x i8] c"If no option is specified (they are all optional), then the program\0A\00"
@.str.7 = [55 x i8] c"will listen on IPADDR_ANY (all interfaces), port 1025.\00"
define void @Usage(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%4 = load i8*, i8** %2
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.1, i64 0, i64 0), i8* %4)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([77 x i8], [77 x i8]* @.str.3, i64 0, i64 0))
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([81 x i8], [81 x i8]* @.str.4, i64 0, i64 0))
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([70 x i8], [70 x i8]* @.str.5, i64 0, i64 0))
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.6, i64 0, i64 0))
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([55 x i8], [55 x i8]* @.str.7, i64 0, i64 0))
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str.1 = [47 x i8] c"Usage: %s [-i IP address] [-e ethx] [-p port]\0A\00"
@.str.7 = [55 x i8] c"will listen on IPADDR_ANY (all interfaces), port 1025.\00"
@str = [25 x i8] c" -h Help.\00"
@str.8 = [76 x i8] c" -i Specifies IP address of interface you want to listen to.\00"
@str.9 = [80 x i8] c" -e Specifies the ethernet interface name you want to listen to.\00"
@str.10 = [69 x i8] c" -p Specifies port number of packets you want to see.\00"
@str.11 = [68 x i8] c"If no option is specified (they are all optional), then the program\00"
define void @Usage(i8* %0) {
%2 = tail call i32 @putchar(i32 10)
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([47 x i8], [47 x i8]* @.str.1, i64 0, i64 0), i8* %0)
%4 = tail call i32 @putchar(i32 10)
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @str, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([76 x i8], [76 x i8]* @str.8, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([80 x i8], [80 x i8]* @str.9, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @str.10, i64 0, i64 0))
%9 = tail call i32 @putchar(i32 10)
%10 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([68 x i8], [68 x i8]* @str.11, i64 0, i64 0))
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([55 x i8], [55 x i8]* @.str.7, i64 0, i64 0))
%12 = tail call i32 @putchar(i32 10)
%13 = tail call i32 @putchar(i32 10)
ret void
}