#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 */
scalar_t__ _clear();
int _clear_usage();
int getopt(int, char **, char *);
int main(int argc, char *argv[]) {
  int o;
  while ((o = getopt(argc, argv, "")) != -1)
    return _clear_usage();
  if (argc != 1)
    return _clear_usage();
  return (_clear() == 0) ? 0 : 2;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    -0x8(%rbp),%edi
mov    -0x10(%rbp),%rsi
lea    0xeac(%rip),%rdx
call   1040 <getopt@plt>
mov    %eax,-0x14(%rbp)
cmp    $0xffffffff,%eax
je     1174 <main+0x44>
mov    $0x0,%al
call   1050 <_clear_usage@plt>
mov    %eax,-0x4(%rbp)
jmp    11a8 <main+0x78>
cmpl   $0x1,-0x8(%rbp)
je     118d <main+0x5d>
mov    $0x0,%al
call   1050 <_clear_usage@plt>
mov    %eax,-0x4(%rbp)
jmp    11a8 <main+0x78>
mov    $0x0,%al
call   1030 <_clear@plt>
mov    %rax,%rdx
mov    $0x2,%eax
xor    %ecx,%ecx
cmp    $0x0,%rdx
cmove  %ecx,%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    %edi,%ebx
lea    0xec6(%rip),%rdx
call   1040 <getopt@plt>
cmp    $0xffffffff,%eax
jne    115e <main+0x2e>
cmp    $0x1,%ebx
jne    115e <main+0x2e>
xor    %eax,%eax
call   1030 <_clear@plt>
xor    %ecx,%ecx
test   %rax,%rax
setne  %cl
add    %ecx,%ecx
mov    %ecx,%eax
pop    %rbx
ret
xor    %eax,%eax
pop    %rbx
jmp    1050 <_clear_usage@plt>

LLVM IR (-O0):
@.str = [1 x i8] zeroinitializer
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
br label %7
7: ; preds = %2
%8 = load i32, i32* %4
%9 = load i8**, i8*** %5
%10 = call i32 @getopt(i32 %8, i8** %9, i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str, i64 0, i64 0))
store i32 %10, i32* %6
%11 = icmp ne i32 %10, -1
br i1 %11, label %12, label %14
12: ; preds = %7
%13 = call i32 (...) @_clear_usage()
store i32 %13, i32* %3
br label %24
14: ; preds = %7
%15 = load i32, i32* %4
%16 = icmp ne i32 %15, 1
br i1 %16, label %17, label %19
17: ; preds = %14
%18 = call i32 (...) @_clear_usage()
store i32 %18, i32* %3
br label %24
19: ; preds = %14
%20 = call i64 (...) @_clear()
%21 = icmp eq i64 %20, 0
%22 = zext i1 %21 to i64
%23 = select i1 %21, i32 0, i32 2
store i32 %23, i32* %3
br label %24
24: ; preds = %19, %17, %12
%25 = load i32, i32* %3
ret i32 %25
}

LLVM IR (-O2):
@.str = [1 x i8] zeroinitializer
define i32 @main(i32 %0, i8** %1) {
%3 = tail call i32 @getopt(i32 %0, i8** %1, i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str, i64 0, i64 0))
%4 = icmp eq i32 %3, -1
br i1 %4, label %7, label %5
5: ; preds = %2
%6 = tail call i32 (...) @_clear_usage()
br label %15
7: ; preds = %2
%8 = icmp eq i32 %0, 1
br i1 %8, label %11, label %9
9: ; preds = %7
%10 = tail call i32 (...) @_clear_usage()
br label %15
11: ; preds = %7
%12 = tail call i64 (...) @_clear()
%13 = icmp eq i64 %12, 0
%14 = select i1 %13, i32 0, i32 2
br label %15
15: ; preds = %11, %9, %5
%16 = phi i32 [ %6, %5 ], [ %10, %9 ], [ %14, %11 ]
ret i32 %16
}