#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 */
typedef int /*<<< orphan*/ FILE;

/* Variables and functions */
int /*<<< orphan*/ EXIT_FAILURE;
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/ *, char *, ...);
int /*<<< orphan*/ stderr;
int write_dig(int dig) {
  FILE *file;
  file = fopen(
      "/sys/devices/platform/asus-nb-wmi/leds/asus::kbd_backlight/brightness",
      "w");
  if (file == NULL) {
    fprintf(stderr, "Can't open dev file for writing. Use as su\n");
    exit(EXIT_FAILURE);
  }
  fprintf(file, "%d", dig);
  fclose(file);
}


x86 assembly (clang, -O0):
<write_dig>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x8(%rbp)
lea    0xeae(%rip),%rdi
lea    0xeed(%rip),%rsi
call   1050 <fopen@plt>
mov    %rax,-0x10(%rbp)
cmpq   $0x0,-0x10(%rbp)
jne    1193 <write_dig+0x53>
mov    0x2e6c(%rip),%rax
movslq (%rax),%rdi
lea    0xeca(%rip),%rsi
mov    $0x0,%al
call   1040 <fprintf@plt>
mov    0x2e4c(%rip),%rax
mov    (%rax),%edi
call   1060 <exit@plt>
mov    -0x10(%rbp),%rdi
mov    -0x8(%rbp),%edx
lea    0xed3(%rip),%rsi
mov    $0x0,%al
call   1040 <fprintf@plt>
mov    -0x10(%rbp),%rdi
call   1030 <fclose@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<write_dig>:
push   %rbp
push   %rbx
push   %rax
mov    %edi,%ebp
lea    0xea4(%rip),%rdi
lea    0xee3(%rip),%rsi
call   1050 <fopen@plt>
test   %rax,%rax
je     1191 <write_dig+0x41>
mov    %rax,%rbx
lea    0xefd(%rip),%rsi
mov    %rax,%rdi
mov    %ebp,%edx
xor    %eax,%eax
call   1040 <fprintf@plt>
mov    %rbx,%rdi
add    $0x8,%rsp
pop    %rbx
pop    %rbp
jmp    1030 <fclose@plt>
mov    0x2e48(%rip),%rax
movslq (%rax),%rcx
lea    0xea6(%rip),%rdi
mov    $0x2b,%esi
mov    $0x1,%edx
call   1070 <fwrite@plt>
mov    0x2e20(%rip),%rax
mov    (%rax),%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@.str = [70 x i8] c"/sys/devices/platform/asus-nb-wmi/leds/asus::kbd_backlight/brightness\00"
@.str.1 = [2 x i8] c"w\00"
@stderr = global i32 0
@.str.2 = [44 x i8] c"Can't open dev file for writing. Use as su\0A\00"
@EXIT_FAILURE = global i32 0
@.str.3 = [3 x i8] c"%d\00"
define i32 @write_dig(i32 %0) {
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32*
store i32 %0, i32* %3
%5 = call i32* @fopen(i8* getelementptr inbounds ([70 x i8], [70 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
store i32* %5, i32** %4
%6 = load i32*, i32** %4
%7 = icmp eq i32* %6, null
br i1 %7, label %8, label %15
8: ; preds = %1
%9 = load i32, i32* @stderr
%10 = sext i32 %9 to i64
%11 = inttoptr i64 %10 to i32*
%12 = call i32 (i32*, i8*, ...) @fprintf(i32* %11, i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str.2, i64 0, i64 0))
%13 = load i32, i32* @EXIT_FAILURE
%14 = call i32 @exit(i32 %13)
unreachable
15: ; preds = %1
%16 = load i32*, i32** %4
%17 = load i32, i32* %3
%18 = call i32 (i32*, i8*, ...) @fprintf(i32* %16, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i32 %17)
%19 = load i32*, i32** %4
%20 = call i32 @fclose(i32* %19)
%21 = load i32, i32* %2
ret i32 %21
}

LLVM IR (-O2):
@.str = [70 x i8] c"/sys/devices/platform/asus-nb-wmi/leds/asus::kbd_backlight/brightness\00"
@.str.1 = [2 x i8] c"w\00"
@stderr = global i32 0
@.str.2 = [44 x i8] c"Can't open dev file for writing. Use as su\0A\00"
@EXIT_FAILURE = global i32 0
@.str.3 = [3 x i8] c"%d\00"
define i32 @write_dig(i32 %0) {
%2 = tail call i32* @fopen(i8* getelementptr inbounds ([70 x i8], [70 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%3 = icmp eq i32* %2, null
br i1 %3, label %4, label %11
4: ; preds = %1
%5 = load i32, i32* @stderr
%6 = sext i32 %5 to i64
%7 = inttoptr i64 %6 to i32*
%8 = tail call i64 @fwrite(i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str.2, i64 0, i64 0), i64 43, i64 1, i32* %7)
%9 = load i32, i32* @EXIT_FAILURE
%10 = tail call i32 @exit(i32 %9)
unreachable
11: ; preds = %1
%12 = tail call i32 (i32*, i8*, ...) @fprintf(i32* %2, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i32 %0)
%13 = tail call i32 @fclose(i32* %2)
ret i32 undef
}