#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 *binary_name) {
  printf("usage: %s [-pcwv] -i filename\n", binary_name);
  printf("switches:\n");
  printf("  -i filename - opens \"filename\"\n");
  printf("  -p number   - only shows packets with the PID \"number\"\n");
  printf("  -c          - continues without prompting the user for a key "
         "stroke\n");
  printf("  -v          - verbose. More debugging output.\n");
  printf("  -w number   - how many 8 bit columns will be displayed per row "
         "(default: 4)\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    0xeea(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xee7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xefb(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf27(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf60(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf83(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec1(%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    0xed6(%rip),%rdi
call   1040 <puts@plt>
lea    0xed4(%rip),%rdi
call   1040 <puts@plt>
lea    0xee9(%rip),%rdi
call   1040 <puts@plt>
lea    0xf16(%rip),%rdi
call   1040 <puts@plt>
lea    0xf50(%rip),%rdi
call   1040 <puts@plt>
lea    0xf74(%rip),%rdi
call   1040 <puts@plt>
mov    $0xa,%edi
pop    %rax
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [31 x i8] c"usage: %s [-pcwv] -i filename\0A\00"
@.str.1 = [11 x i8] c"switches:\0A\00"
@.str.2 = [34 x i8] c" -i filename - opens \22filename\22\0A\00"
@.str.3 = [58 x i8] c" -p number - only shows packets with the PID \22number\22\0A\00"
@.str.4 = [71 x i8] c" -c - continues without prompting the user for a key stroke\0A\00"
@.str.5 = [49 x i8] c" -v - verbose. More debugging output.\0A\00"
@.str.6 = [79 x i8] c" -w number - how many 8 bit columns will be displayed per row (default: 4)\0A\00"
@.str.7 = [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 ([31 x i8], [31 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([58 x i8], [58 x i8]* @.str.3, i64 0, i64 0))
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([71 x i8], [71 x i8]* @.str.4, i64 0, i64 0))
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([49 x i8], [49 x i8]* @.str.5, i64 0, i64 0))
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([79 x i8], [79 x i8]* @.str.6, i64 0, i64 0))
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.7, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [31 x i8] c"usage: %s [-pcwv] -i filename\0A\00"
@str = [10 x i8] c"switches:\00"
@str.8 = [33 x i8] c" -i filename - opens \22filename\22\00"
@str.9 = [57 x i8] c" -p number - only shows packets with the PID \22number\22\00"
@str.10 = [70 x i8] c" -c - continues without prompting the user for a key stroke\00"
@str.11 = [48 x i8] c" -v - verbose. More debugging output.\00"
@str.12 = [78 x i8] c" -w number - how many 8 bit columns will be displayed per row (default: 4)\00"
define void @usage(i8* %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([31 x i8], [31 x i8]* @.str, i64 0, i64 0), i8* %0)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 x i8]* @str.8, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([57 x i8], [57 x i8]* @str.9, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([70 x i8], [70 x i8]* @str.10, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([48 x i8], [48 x i8]* @str.11, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([78 x i8], [78 x i8]* @str.12, i64 0, i64 0))
%9 = tail call i32 @putchar(i32 10)
ret void
}