#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*/ printn(int);
void main() {
  int x;
  for (x = 00; x != 020; x++)
    printn(x);
  for (x = -10; x != -3; x++)
    printn(x);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
cmpl   $0x10,-0x4(%rbp)
je     113f <main+0x2f>
mov    -0x4(%rbp),%edi
call   1030 <printn@plt>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    111f <main+0xf>
movl   $0xfffffff6,-0x4(%rbp)
cmpl   $0xfffffffd,-0x4(%rbp)
je     1166 <main+0x56>
mov    -0x4(%rbp),%edi
call   1030 <printn@plt>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    1146 <main+0x36>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
xor    %edi,%edi
call   1030 <printn@plt>
mov    $0x1,%edi
call   1030 <printn@plt>
mov    $0x2,%edi
call   1030 <printn@plt>
mov    $0x3,%edi
call   1030 <printn@plt>
mov    $0x4,%edi
call   1030 <printn@plt>
mov    $0x5,%edi
call   1030 <printn@plt>
mov    $0x6,%edi
call   1030 <printn@plt>
mov    $0x7,%edi
call   1030 <printn@plt>
mov    $0x8,%edi
call   1030 <printn@plt>
mov    $0x9,%edi
call   1030 <printn@plt>
mov    $0xa,%edi
call   1030 <printn@plt>
mov    $0xb,%edi
call   1030 <printn@plt>
mov    $0xc,%edi
call   1030 <printn@plt>
mov    $0xd,%edi
call   1030 <printn@plt>
mov    $0xe,%edi
call   1030 <printn@plt>
mov    $0xf,%edi
call   1030 <printn@plt>
mov    $0xfffffff6,%edi
call   1030 <printn@plt>
mov    $0xfffffff7,%edi
call   1030 <printn@plt>
mov    $0xfffffff8,%edi
call   1030 <printn@plt>
mov    $0xfffffff9,%edi
call   1030 <printn@plt>
mov    $0xfffffffa,%edi
call   1030 <printn@plt>
mov    $0xfffffffb,%edi
call   1030 <printn@plt>
mov    $0xfffffffc,%edi
pop    %rax
jmp    1030 <printn@plt>

LLVM IR (-O0):
define void @main() {
%1 = alloca i32
store i32 0, i32* %1
br label %2
2: ; preds = %8, %0
%3 = load i32, i32* %1
%4 = icmp ne i32 %3, 16
br i1 %4, label %5, label %11
5: ; preds = %2
%6 = load i32, i32* %1
%7 = call i32 @printn(i32 %6)
br label %8
8: ; preds = %5
%9 = load i32, i32* %1
%10 = add nsw i32 %9, 1
store i32 %10, i32* %1
br label %2
11: ; preds = %2
store i32 -10, i32* %1
br label %12
12: ; preds = %18, %11
%13 = load i32, i32* %1
%14 = icmp ne i32 %13, -3
br i1 %14, label %15, label %21
15: ; preds = %12
%16 = load i32, i32* %1
%17 = call i32 @printn(i32 %16)
br label %18
18: ; preds = %15
%19 = load i32, i32* %1
%20 = add nsw i32 %19, 1
store i32 %20, i32* %1
br label %12
21: ; preds = %12
ret void
}

LLVM IR (-O2):
define void @main() {
%1 = tail call i32 @printn(i32 0)
%2 = tail call i32 @printn(i32 1)
%3 = tail call i32 @printn(i32 2)
%4 = tail call i32 @printn(i32 3)
%5 = tail call i32 @printn(i32 4)
%6 = tail call i32 @printn(i32 5)
%7 = tail call i32 @printn(i32 6)
%8 = tail call i32 @printn(i32 7)
%9 = tail call i32 @printn(i32 8)
%10 = tail call i32 @printn(i32 9)
%11 = tail call i32 @printn(i32 10)
%12 = tail call i32 @printn(i32 11)
%13 = tail call i32 @printn(i32 12)
%14 = tail call i32 @printn(i32 13)
%15 = tail call i32 @printn(i32 14)
%16 = tail call i32 @printn(i32 15)
%17 = tail call i32 @printn(i32 -10)
%18 = tail call i32 @printn(i32 -9)
%19 = tail call i32 @printn(i32 -8)
%20 = tail call i32 @printn(i32 -7)
%21 = tail call i32 @printn(i32 -6)
%22 = tail call i32 @printn(i32 -5)
%23 = tail call i32 @printn(i32 -4)
ret void
}