#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 howto(void) {
  printf("Uso:\n");
  printf("gpio -d /dev/device -w|m <hex-value> -r\n");
  printf("\t-m <hex-value>: scrive nel registro \"mode\"\n");
  printf("\t-w <hex-value>: scrive nel registro \"write\"\n");
  printf("\t-r: legge il valore del registro \"read\"\n");
  printf("I parametri possono anche essere usati assieme.\n");
}


x86 assembly (clang, -O0):
<howto>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
call   1030 <printf@plt>
lea    0xedf(%rip),%rdi
call   1030 <printf@plt>
lea    0xefc(%rip),%rdi
call   1030 <printf@plt>
lea    0xf1d(%rip),%rdi
call   1030 <printf@plt>
lea    0xf3f(%rip),%rdi
call   1030 <printf@plt>
lea    0xf5d(%rip),%rdi
call   1030 <printf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<howto>:
push   %rax
lea    0xee8(%rip),%rdi
call   1030 <puts@plt>
lea    0xee1(%rip),%rdi
call   1030 <puts@plt>
lea    0xefd(%rip),%rdi
call   1030 <puts@plt>
lea    0xf1d(%rip),%rdi
call   1030 <puts@plt>
lea    0xf3e(%rip),%rdi
call   1030 <puts@plt>
lea    0xf5b(%rip),%rdi
pop    %rax
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [6 x i8] c"Uso:\0A\00"
@.str.1 = [41 x i8] c"gpio -d /dev/device -w|m <hex-value> -r\0A\00"
@.str.2 = [45 x i8] c"\09-m <hex-value>: scrive nel registro \22mode\22\0A\00"
@.str.3 = [46 x i8] c"\09-w <hex-value>: scrive nel registro \22write\22\0A\00"
@.str.4 = [42 x i8] c"\09-r: legge il valore del registro \22read\22\0A\00"
@.str.5 = [49 x i8] c"I parametri possono anche essere usati assieme.\0A\00"
define void @howto() {
%1 = call i32 @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([45 x i8], [45 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([49 x i8], [49 x i8]* @.str.5, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@str = [5 x i8] c"Uso:\00"
@str.6 = [40 x i8] c"gpio -d /dev/device -w|m <hex-value> -r\00"
@str.7 = [44 x i8] c"\09-m <hex-value>: scrive nel registro \22mode\22\00"
@str.8 = [45 x i8] c"\09-w <hex-value>: scrive nel registro \22write\22\00"
@str.9 = [41 x i8] c"\09-r: legge il valore del registro \22read\22\00"
@str.10 = [48 x i8] c"I parametri possono anche essere usati assieme.\00"
define void @howto() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([40 x i8], [40 x i8]* @str.6, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([44 x i8], [44 x i8]* @str.7, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([45 x i8], [45 x i8]* @str.8, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([41 x i8], [41 x i8]* @str.9, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([48 x i8], [48 x i8]* @str.10, i64 0, i64 0))
ret void
}