#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*/ close_all();
int /*<<< orphan*/ monitor();
int /*<<< orphan*/ open_input();
int /*<<< orphan*/ open_netlink();
int /*<<< orphan*/ open_proc();
int /*<<< orphan*/ printf(char *);
int main(void) {
  printf("Kernel ACPI Event Monitor...\n");
  open_proc();
  open_input();
  open_netlink();
  printf("Press Escape to exit, or Ctrl-C if that doesn't work.\n");
  monitor();
  printf("Closing files...\n");
  close_all();
  printf("Goodbye\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xe8a(%rip),%rdi
call   1040 <printf@plt>
mov    $0x0,%al
call   1060 <open_proc@plt>
mov    $0x0,%al
call   1070 <open_input@plt>
mov    $0x0,%al
call   1030 <open_netlink@plt>
lea    0xe87(%rip),%rdi
call   1040 <printf@plt>
mov    $0x0,%al
call   1080 <monitor@plt>
lea    0xeab(%rip),%rdi
call   1040 <printf@plt>
mov    $0x0,%al
call   1050 <close_all@plt>
lea    0xeaa(%rip),%rdi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xe98(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
call   1060 <open_proc@plt>
xor    %eax,%eax
call   1070 <open_input@plt>
xor    %eax,%eax
call   1040 <open_netlink@plt>
lea    0xe94(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
call   1080 <monitor@plt>
lea    0xeb7(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
call   1050 <close_all@plt>
lea    0xeb5(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [30 x i8] c"Kernel ACPI Event Monitor...\0A\00"
@.str.1 = [55 x i8] c"Press Escape to exit, or Ctrl-C if that doesn't work.\0A\00"
@.str.2 = [18 x i8] c"Closing files...\0A\00"
@.str.3 = [9 x i8] c"Goodbye\0A\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str, i64 0, i64 0))
%3 = call i32 (...) @open_proc()
%4 = call i32 (...) @open_input()
%5 = call i32 (...) @open_netlink()
%6 = call i32 @printf(i8* getelementptr inbounds ([55 x i8], [55 x i8]* @.str.1, i64 0, i64 0))
%7 = call i32 (...) @monitor()
%8 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0))
%9 = call i32 (...) @close_all()
%10 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.3, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@str = [29 x i8] c"Kernel ACPI Event Monitor...\00"
@str.4 = [54 x i8] c"Press Escape to exit, or Ctrl-C if that doesn't work.\00"
@str.5 = [17 x i8] c"Closing files...\00"
@str.6 = [8 x i8] c"Goodbye\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 (...) @open_proc()
%3 = tail call i32 (...) @open_input()
%4 = tail call i32 (...) @open_netlink()
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([54 x i8], [54 x i8]* @str.4, i64 0, i64 0))
%6 = tail call i32 (...) @monitor()
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @str.5, i64 0, i64 0))
%8 = tail call i32 (...) @close_all()
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @str.6, i64 0, i64 0))
ret i32 0
}