#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 help(const char *file) {
  printf("Usage: %s src_filename des_filepath [k n w packet_size]\n\n", file);
  printf("  src_filename:\t the file to be encode(./data.txt)\n");
  printf("  des_filepath:\t the path to store encode files(./data/)\n");
  printf("  k:\t\t data devices number(4)\n");
  printf("  m:\t\t parity devices number(2)\n");
  printf("  w:\t\t word unit(8/16/32)\n");
  printf("  packet_size:\t the process unit 1024B(>256B)\n");
}


x86 assembly (clang, -O0):
<help>:
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    0xf05(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf2b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf57(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf68(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf7b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf88(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<help>:
push   %rax
mov    %rdi,%rsi
lea    0xed5(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xf01(%rip),%rdi
call   1030 <puts@plt>
lea    0xf28(%rip),%rdi
call   1030 <puts@plt>
lea    0xf55(%rip),%rdi
call   1030 <puts@plt>
lea    0xf67(%rip),%rdi
call   1030 <puts@plt>
lea    0xf7b(%rip),%rdi
call   1030 <puts@plt>
lea    0xf89(%rip),%rdi
pop    %rax
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [58 x i8] c"Usage: %s src_filename des_filepath [k n w packet_size]\0A\0A\00"
@.str.1 = [52 x i8] c" src_filename:\09 the file to be encode(./data.txt)\0A\00"
@.str.2 = [58 x i8] c" des_filepath:\09 the path to store encode files(./data/)\0A\00"
@.str.3 = [31 x i8] c" k:\09\09 data devices number(4)\0A\00"
@.str.4 = [33 x i8] c" m:\09\09 parity devices number(2)\0A\00"
@.str.5 = [27 x i8] c" w:\09\09 word unit(8/16/32)\0A\00"
@.str.6 = [47 x i8] c" packet_size:\09 the process unit 1024B(>256B)\0A\00"
define void @help(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i8*, i8** %2
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([58 x i8], [58 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([52 x i8], [52 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([58 x i8], [58 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str.3, i64 0, i64 0))
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.4, i64 0, i64 0))
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.5, i64 0, i64 0))
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.6, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [58 x i8] c"Usage: %s src_filename des_filepath [k n w packet_size]\0A\0A\00"
@str = [51 x i8] c" src_filename:\09 the file to be encode(./data.txt)\00"
@str.7 = [57 x i8] c" des_filepath:\09 the path to store encode files(./data/)\00"
@str.8 = [30 x i8] c" k:\09\09 data devices number(4)\00"
@str.9 = [32 x i8] c" m:\09\09 parity devices number(2)\00"
@str.10 = [26 x i8] c" w:\09\09 word unit(8/16/32)\00"
@str.11 = [46 x i8] c" packet_size:\09 the process unit 1024B(>256B)\00"
define void @help(i8* %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([58 x i8], [58 x i8]* @.str, i64 0, i64 0), i8* %0)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([51 x i8], [51 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([57 x i8], [57 x i8]* @str.7, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @str.8, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([32 x i8], [32 x i8]* @str.9, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @str.10, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @str.11, i64 0, i64 0))
ret void
}