#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);
void boxit(void) {
  int x;
  for (x = 0; x < 20; ++x)
    mvaddch(x, 7, '|');
  for (x = 0; x < 80; ++x) {
    if (x > 7)
      mvaddch(19, x, '_');
    mvaddch(22, x, '_');
  }
}


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   $0x0,-0x4(%rbp)
cmpl   $0x50,-0x4(%rbp)
jge    1196 <boxit+0x86>
cmpl   $0x7,-0x4(%rbp)
jle    1176 <boxit+0x66>
mov    -0x4(%rbp),%esi
mov    $0x13,%edi
mov    $0x5f,%edx
call   1030 <mvaddch@plt>
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    1150 <boxit+0x40>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<boxit>:
push   %rbx
xor    %ebx,%ebx
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,%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>
jmp    12c9 <boxit+0x1b9>
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax)
mov    $0x16,%edi
mov    %ebx,%esi
mov    $0x5f,%edx
call   1030 <mvaddch@plt>
add    $0x1,%ebx
cmp    $0x50,%ebx
je     12e1 <boxit+0x1d1>
cmp    $0x8,%ebx
jb     12b0 <boxit+0x1a0>
mov    $0x13,%edi
mov    %ebx,%esi
mov    $0x5f,%edx
call   1030 <mvaddch@plt>
jmp    12b0 <boxit+0x1a0>
pop    %rbx
ret

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

LLVM IR (-O2):
define void @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, %26
%22 = phi i32 [ %28, %26 ], [ 0, %0 ]
%23 = icmp ugt i32 %22, 7
br i1 %23, label %24, label %26
24: ; preds = %21
%25 = tail call i32 @mvaddch(i32 19, i32 %22, i8 signext 95)
br label %26
26: ; preds = %24, %21
%27 = tail call i32 @mvaddch(i32 22, i32 %22, i8 signext 95)
%28 = add nuw nsw i32 %22, 1
%29 = icmp eq i32 %28, 80
br i1 %29, label %30, label %21
30: ; preds = %26
ret void
}