#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*/ mvaddch(int, int, char);
int boxit() {
  int x = 0;
  while (x < 20) {
    mvaddch(x, 7, '|');
    ++x;
  }
  x = 8;
  while (x < 80) {
    mvaddch(19, x, '_');
    ++x;
  }
  x = 0;
  while (x < 80) {
    mvaddch(22, x, '_');
    ++x;
  }
  return (0);
}


x86 assembly (clang, -O0):
<boxit>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
cmpl   $0x14,-0x4(%rbp)
jge    1149 <boxit+0x39>
mov    -0x4(%rbp),%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    111f <boxit+0xf>
movl   $0x8,-0x4(%rbp)
cmpl   $0x50,-0x4(%rbp)
jge    117a <boxit+0x6a>
mov    -0x4(%rbp),%esi
mov    $0x13,%edi
mov    $0x5f,%edx
call   1030 <mvaddch@plt>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    1150 <boxit+0x40>
movl   $0x0,-0x4(%rbp)
cmpl   $0x50,-0x4(%rbp)
jge    11ab <boxit+0x9b>
mov    -0x4(%rbp),%esi
mov    $0x16,%edi
mov    $0x5f,%edx
call   1030 <mvaddch@plt>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    1181 <boxit+0x71>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<boxit>:
push   %rbx
xor    %edi,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x1,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x2,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x3,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x4,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x5,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x6,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x7,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x8,%ebx
mov    $0x8,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x9,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0xa,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0xb,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0xc,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0xd,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0xe,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0xf,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x10,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x11,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x12,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
mov    $0x13,%edi
mov    $0x7,%esi
mov    $0x7c,%edx
call   1030 <mvaddch@plt>
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
mov    $0x13,%edi
mov    %ebx,%esi
mov    $0x5f,%edx
call   1030 <mvaddch@plt>
add    $0x1,%ebx
cmp    $0x50,%ebx
jne    12b0 <boxit+0x1a0>
xor    %ebx,%ebx
nopl   0x0(%rax,%rax,1)
mov    $0x16,%edi
mov    %ebx,%esi
mov    $0x5f,%edx
call   1030 <mvaddch@plt>
add    $0x1,%ebx
cmp    $0x50,%ebx
jne    12d0 <boxit+0x1c0>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
define i32 @boxit() {
%1 = alloca i32
store i32 0, i32* %1
br label %2
2: ; preds = %5, %0
%3 = load i32, i32* %1
%4 = icmp slt i32 %3, 20
br i1 %4, label %5, label %10
5: ; preds = %2
%6 = load i32, i32* %1
%7 = call i32 @mvaddch(i32 %6, i32 7, i8 signext 124)
%8 = load i32, i32* %1
%9 = add nsw i32 %8, 1
store i32 %9, i32* %1
br label %2
10: ; preds = %2
store i32 8, i32* %1
br label %11
11: ; preds = %14, %10
%12 = load i32, i32* %1
%13 = icmp slt i32 %12, 80
br i1 %13, label %14, label %19
14: ; preds = %11
%15 = load i32, i32* %1
%16 = call i32 @mvaddch(i32 19, i32 %15, i8 signext 95)
%17 = load i32, i32* %1
%18 = add nsw i32 %17, 1
store i32 %18, i32* %1
br label %11
19: ; preds = %11
store i32 0, i32* %1
br label %20
20: ; preds = %23, %19
%21 = load i32, i32* %1
%22 = icmp slt i32 %21, 80
br i1 %22, label %23, label %28
23: ; preds = %20
%24 = load i32, i32* %1
%25 = call i32 @mvaddch(i32 22, i32 %24, i8 signext 95)
%26 = load i32, i32* %1
%27 = add nsw i32 %26, 1
store i32 %27, i32* %1
br label %20
28: ; preds = %20
ret i32 0
}

LLVM IR (-O2):
define i32 @boxit() {
%1 = tail call i32 @mvaddch(i32 0, i32 7, i8 signext 124)
%2 = tail call i32 @mvaddch(i32 1, i32 7, i8 signext 124)
%3 = tail call i32 @mvaddch(i32 2, i32 7, i8 signext 124)
%4 = tail call i32 @mvaddch(i32 3, i32 7, i8 signext 124)
%5 = tail call i32 @mvaddch(i32 4, i32 7, i8 signext 124)
%6 = tail call i32 @mvaddch(i32 5, i32 7, i8 signext 124)
%7 = tail call i32 @mvaddch(i32 6, i32 7, i8 signext 124)
%8 = tail call i32 @mvaddch(i32 7, i32 7, i8 signext 124)
%9 = tail call i32 @mvaddch(i32 8, i32 7, i8 signext 124)
%10 = tail call i32 @mvaddch(i32 9, i32 7, i8 signext 124)
%11 = tail call i32 @mvaddch(i32 10, i32 7, i8 signext 124)
%12 = tail call i32 @mvaddch(i32 11, i32 7, i8 signext 124)
%13 = tail call i32 @mvaddch(i32 12, i32 7, i8 signext 124)
%14 = tail call i32 @mvaddch(i32 13, i32 7, i8 signext 124)
%15 = tail call i32 @mvaddch(i32 14, i32 7, i8 signext 124)
%16 = tail call i32 @mvaddch(i32 15, i32 7, i8 signext 124)
%17 = tail call i32 @mvaddch(i32 16, i32 7, i8 signext 124)
%18 = tail call i32 @mvaddch(i32 17, i32 7, i8 signext 124)
%19 = tail call i32 @mvaddch(i32 18, i32 7, i8 signext 124)
%20 = tail call i32 @mvaddch(i32 19, i32 7, i8 signext 124)
br label %21
21: ; preds = %0, %21
%22 = phi i32 [ %24, %21 ], [ 8, %0 ]
%23 = tail call i32 @mvaddch(i32 19, i32 %22, i8 signext 95)
%24 = add nuw nsw i32 %22, 1
%25 = icmp eq i32 %24, 80
br i1 %25, label %26, label %21
26: ; preds = %21, %26
%27 = phi i32 [ %29, %26 ], [ 0, %21 ]
%28 = tail call i32 @mvaddch(i32 22, i32 %27, i8 signext 95)
%29 = add nuw nsw i32 %27, 1
%30 = icmp eq i32 %29, 80
br i1 %30, label %31, label %26
31: ; preds = %26
ret i32 0
}