#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*/ scanf(char *, int *);
int menu() {
  int choice;
  printf("0. Exit\n");
  printf("1. Add\n");
  printf("2. Display\n");
  printf("3. Level Wise Display\n");
  printf("4. Add NonRecursive\n");
  printf("5. Pre-Order Display (NonRecursive)\n");
  printf("Enter choice:");
  scanf("%d", &choice);
  return choice;
}


x86 assembly (clang, -O0):
<menu>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed1(%rip),%rdi
call   1030 <printf@plt>
lea    0xece(%rip),%rdi
call   1030 <printf@plt>
lea    0xeca(%rip),%rdi
call   1030 <printf@plt>
lea    0xeca(%rip),%rdi
call   1030 <printf@plt>
lea    0xed5(%rip),%rdi
call   1030 <printf@plt>
lea    0xede(%rip),%rdi
call   1030 <printf@plt>
lea    0xef7(%rip),%rdi
call   1030 <printf@plt>
lea    0xef9(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<menu>:
push   %rax
lea    0xed9(%rip),%rdi
call   1030 <puts@plt>
lea    0xed5(%rip),%rdi
call   1030 <puts@plt>
lea    0xed0(%rip),%rdi
call   1030 <puts@plt>
lea    0xecf(%rip),%rdi
call   1030 <puts@plt>
lea    0xed9(%rip),%rdi
call   1030 <puts@plt>
lea    0xee1(%rip),%rdi
call   1030 <puts@plt>
lea    0xe80(%rip),%rdi
call   1040 <printf@plt>
lea    0xe82(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [9 x i8] c"0. Exit\0A\00"
@.str.1 = [8 x i8] c"1. Add\0A\00"
@.str.2 = [12 x i8] c"2. Display\0A\00"
@.str.3 = [23 x i8] c"3. Level Wise Display\0A\00"
@.str.4 = [21 x i8] c"4. Add NonRecursive\0A\00"
@.str.5 = [37 x i8] c"5. Pre-Order Display (NonRecursive)\0A\00"
@.str.6 = [14 x i8] c"Enter choice:\00"
@.str.7 = [3 x i8] c"%d\00"
define i32 @menu() {
%1 = alloca i32
%2 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.3, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.4, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.5, i64 0, i64 0))
%8 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.6, i64 0, i64 0))
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.7, i64 0, i64 0), i32* %1)
%10 = load i32, i32* %1
ret i32 %10
}

LLVM IR (-O2):
@.str.6 = [14 x i8] c"Enter choice:\00"
@.str.7 = [3 x i8] c"%d\00"
@str = [8 x i8] c"0. Exit\00"
@str.8 = [7 x i8] c"1. Add\00"
@str.9 = [11 x i8] c"2. Display\00"
@str.10 = [22 x i8] c"3. Level Wise Display\00"
@str.11 = [20 x i8] c"4. Add NonRecursive\00"
@str.12 = [36 x i8] c"5. Pre-Order Display (NonRecursive)\00"
define i32 @menu() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @str.8, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str.9, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str.10, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @str.11, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @str.12, i64 0, i64 0))
%9 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.6, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.7, i64 0, i64 0), i32* %1)
%11 = load i32, i32* %1
ret i32 %11
}