#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*/ printf(char *);
int /*<<< orphan*/ putchar(char);
void lcd_cls(void) {
  int i;
  putchar('\n');
  for (i = 0; i < 20; i++) {
    printf("-");
  }
  putchar('\n');
}


x86 assembly (clang, -O0):
<lcd_cls>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    $0xa,%edi
call   1030 <putchar@plt>
movl   $0x0,-0x4(%rbp)
cmpl   $0x14,-0x4(%rbp)
jge    115d <lcd_cls+0x3d>
lea    0xeb6(%rip),%rdi
call   1040 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    1139 <lcd_cls+0x19>
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<lcd_cls>:
push   %rax
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0x2d,%edi
call   1030 <putchar@plt>
mov    $0xa,%edi
pop    %rax
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [2 x i8] c"-\00"
define void @lcd_cls() {
%1 = alloca i32
%2 = call i32 @putchar(i8 signext 10)
store i32 0, i32* %1
br label %3
3: ; preds = %8, %0
%4 = load i32, i32* %1
%5 = icmp slt i32 %4, 20
br i1 %5, label %6, label %11
6: ; preds = %3
%7 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
br label %8
8: ; preds = %6
%9 = load i32, i32* %1
%10 = add nsw i32 %9, 1
store i32 %10, i32* %1
br label %3
11: ; preds = %3
%12 = call i32 @putchar(i8 signext 10)
ret void
}

LLVM IR (-O2):
define void @lcd_cls() {
%1 = tail call i32 @putchar(i8 signext 10)
%2 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%3 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%4 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%5 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%6 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%7 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%8 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%9 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%10 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%11 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%12 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%13 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%14 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%15 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%16 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%17 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%18 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%19 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%20 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%21 = tail call i32 bitcast (i32 (i8)* @putchar to i32 (i32)*)(i32 45)
%22 = tail call i32 @putchar(i8 signext 10)
ret void
}