#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(void) {
  int o;
  printf("Menu:\n");
  printf("1 - Search a number.\n");
  printf("2 - Insert a number in the beginning.\n");
  printf("3 - Insert a number in the ending.\n");
  printf("4 - Print a list.\n");
  printf("5 - Make 2 list became 1!\n");
  printf("0 - Exit\n>> ");
  scanf("%i", &o);
  return o;
}


x86 assembly (clang, -O0):
<menu>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed1(%rip),%rdi
call   1030 <printf@plt>
lea    0xecc(%rip),%rdi
call   1030 <printf@plt>
lea    0xed6(%rip),%rdi
call   1030 <printf@plt>
lea    0xef1(%rip),%rdi
call   1030 <printf@plt>
lea    0xf09(%rip),%rdi
call   1030 <printf@plt>
lea    0xf10(%rip),%rdi
call   1030 <printf@plt>
lea    0xf1f(%rip),%rdi
call   1030 <printf@plt>
lea    0xf20(%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    0xed8(%rip),%rdi
call   1030 <puts@plt>
lea    0xed2(%rip),%rdi
call   1030 <puts@plt>
lea    0xedb(%rip),%rdi
call   1030 <puts@plt>
lea    0xef5(%rip),%rdi
call   1030 <puts@plt>
lea    0xf0c(%rip),%rdi
call   1030 <puts@plt>
lea    0xf12(%rip),%rdi
call   1030 <puts@plt>
lea    0xe80(%rip),%rdi
call   1040 <printf@plt>
lea    0xe81(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [7 x i8] c"Menu:\0A\00"
@.str.1 = [22 x i8] c"1 - Search a number.\0A\00"
@.str.2 = [39 x i8] c"2 - Insert a number in the beginning.\0A\00"
@.str.3 = [36 x i8] c"3 - Insert a number in the ending.\0A\00"
@.str.4 = [19 x i8] c"4 - Print a list.\0A\00"
@.str.5 = [27 x i8] c"5 - Make 2 list became 1!\0A\00"
@.str.6 = [13 x i8] c"0 - Exit\0A>> \00"
@.str.7 = [3 x i8] c"%i\00"
define i32 @menu() {
%1 = alloca i32
%2 = call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str.2, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.3, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.4, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.5, i64 0, i64 0))
%8 = call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 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 = [13 x i8] c"0 - Exit\0A>> \00"
@.str.7 = [3 x i8] c"%i\00"
@str = [6 x i8] c"Menu:\00"
@str.8 = [21 x i8] c"1 - Search a number.\00"
@str.9 = [38 x i8] c"2 - Insert a number in the beginning.\00"
@str.10 = [35 x i8] c"3 - Insert a number in the ending.\00"
@str.11 = [18 x i8] c"4 - Print a list.\00"
@str.12 = [26 x i8] c"5 - Make 2 list became 1!\00"
define i32 @menu() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @str.8, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([38 x i8], [38 x i8]* @str.9, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @str.10, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @str.11, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @str.12, i64 0, i64 0))
%9 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 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
}