#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*/ exit(int);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, ...);
int /*<<< orphan*/ stderr;
void usage(const char *argv0, int exit_code) {
  fprintf(stderr, "Set keyboard backlight.\n");
  fprintf(stderr, "Usage: %s <brightness>\n", argv0);
  fprintf(stderr, "<brightness> may be:\n");
  fprintf(stderr, "\t0-3\tdirectly set the keyboard brightness\n");
  fprintf(stderr, "\t--\tdecrease the brightness by one step\n");
  fprintf(stderr, "\t++\tincrease the brightness by one step\n");
  exit(exit_code);
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    0x2eaa(%rip),%rax
mov    (%rax),%edi
lea    0xec1(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e93(%rip),%rax
mov    (%rax),%edi
mov    -0x8(%rbp),%rdx
lea    0xebf(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e78(%rip),%rax
mov    (%rax),%edi
lea    0xec0(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e61(%rip),%rax
mov    (%rax),%edi
lea    0xebf(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e4a(%rip),%rax
mov    (%rax),%edi
lea    0xed3(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e33(%rip),%rax
mov    (%rax),%edi
lea    0xee5(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    -0xc(%rbp),%edi
call   1040 <exit@plt>

x86 assembly (clang, -O2):
<usage>:
push   %rbp
push   %r14
push   %rbx
mov    %esi,%r14d
mov    %rdi,%rbx
mov    0x2eaf(%rip),%rbp
mov    0x0(%rbp),%edi
lea    0xec5(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    0x0(%rbp),%edi
lea    0xecd(%rip),%rsi
mov    %rbx,%rdx
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    0x0(%rbp),%edi
lea    0xed1(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    0x0(%rbp),%edi
lea    0xed6(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    0x0(%rbp),%edi
lea    0xef0(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    0x0(%rbp),%edi
lea    0xf08(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    %r14d,%edi
call   1040 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [25 x i8] c"Set keyboard backlight.\0A\00"
@.str.1 = [24 x i8] c"Usage: %s <brightness>\0A\00"
@.str.2 = [22 x i8] c"<brightness> may be:\0A\00"
@.str.3 = [43 x i8] c"\090-3\09directly set the keyboard brightness\0A\00"
@.str.4 = [41 x i8] c"\09--\09decrease the brightness by one step\0A\00"
@.str.5 = [41 x i8] c"\09++\09increase the brightness by one step\0A\00"
define void @usage(i8* %0, i32 %1) {
%3 = alloca i8*
%4 = alloca i32
store i8* %0, i8** %3
store i32 %1, i32* %4
%5 = load i32, i32* @stderr
%6 = call i32 (i32, i8*, ...) @fprintf(i32 %5, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%7 = load i32, i32* @stderr
%8 = load i8*, i8** %3
%9 = call i32 (i32, i8*, ...) @fprintf(i32 %7, i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0), i8* %8)
%10 = load i32, i32* @stderr
%11 = call i32 (i32, i8*, ...) @fprintf(i32 %10, i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.2, i64 0, i64 0))
%12 = load i32, i32* @stderr
%13 = call i32 (i32, i8*, ...) @fprintf(i32 %12, i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str.3, i64 0, i64 0))
%14 = load i32, i32* @stderr
%15 = call i32 (i32, i8*, ...) @fprintf(i32 %14, i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.4, i64 0, i64 0))
%16 = load i32, i32* @stderr
%17 = call i32 (i32, i8*, ...) @fprintf(i32 %16, i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.5, i64 0, i64 0))
%18 = load i32, i32* %4
%19 = call i32 @exit(i32 %18)
unreachable
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [25 x i8] c"Set keyboard backlight.\0A\00"
@.str.1 = [24 x i8] c"Usage: %s <brightness>\0A\00"
@.str.2 = [22 x i8] c"<brightness> may be:\0A\00"
@.str.3 = [43 x i8] c"\090-3\09directly set the keyboard brightness\0A\00"
@.str.4 = [41 x i8] c"\09--\09decrease the brightness by one step\0A\00"
@.str.5 = [41 x i8] c"\09++\09increase the brightness by one step\0A\00"
define void @usage(i8* %0, i32 %1) {
%3 = load i32, i32* @stderr
%4 = tail call i32 (i32, i8*, ...) @fprintf(i32 %3, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%5 = load i32, i32* @stderr
%6 = tail call i32 (i32, i8*, ...) @fprintf(i32 %5, i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0), i8* %0)
%7 = load i32, i32* @stderr
%8 = tail call i32 (i32, i8*, ...) @fprintf(i32 %7, i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.2, i64 0, i64 0))
%9 = load i32, i32* @stderr
%10 = tail call i32 (i32, i8*, ...) @fprintf(i32 %9, i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str.3, i64 0, i64 0))
%11 = load i32, i32* @stderr
%12 = tail call i32 (i32, i8*, ...) @fprintf(i32 %11, i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.4, i64 0, i64 0))
%13 = load i32, i32* @stderr
%14 = tail call i32 (i32, i8*, ...) @fprintf(i32 %13, i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.5, i64 0, i64 0))
%15 = tail call i32 @exit(i32 %1)
unreachable
}