#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 opc;
  printf("\nEscolha uma operação: ");
  printf("\n 1- Imprimir Fibonacci");
  printf("\n 2- Calcular fatorial");
  printf("\n 3- Calcular sigma");
  printf("\n-------------------------\n");
  scanf("%d", &opc);
  return opc;
}


x86 assembly (clang, -O0):
<menu>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed1(%rip),%rdi
call   1030 <printf@plt>
lea    0xedf(%rip),%rdi
call   1030 <printf@plt>
lea    0xeeb(%rip),%rdi
call   1030 <printf@plt>
lea    0xef6(%rip),%rdi
call   1030 <printf@plt>
lea    0xefe(%rip),%rdi
call   1030 <printf@plt>
lea    0xf0e(%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    0xec8(%rip),%rdi
call   1040 <printf@plt>
lea    0xed6(%rip),%rdi
call   1040 <printf@plt>
lea    0xee2(%rip),%rdi
call   1040 <printf@plt>
lea    0xeed(%rip),%rdi
call   1040 <printf@plt>
lea    0xef8(%rip),%rdi
call   1030 <puts@plt>
lea    0xee9(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [26 x i8] c"\0AEscolha uma opera\C3\A7\C3\A3o: \00"
@.str.1 = [24 x i8] c"\0A 1- Imprimir Fibonacci\00"
@.str.2 = [23 x i8] c"\0A 2- Calcular fatorial\00"
@.str.3 = [20 x i8] c"\0A 3- Calcular sigma\00"
@.str.4 = [28 x i8] c"\0A-------------------------\0A\00"
@.str.5 = [3 x i8] c"%d\00"
define i32 @menu() {
%1 = alloca i32
%2 = call i32 @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.3, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.4, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.5, i64 0, i64 0), i32* %1)
%8 = load i32, i32* %1
ret i32 %8
}

LLVM IR (-O2):
@.str = [26 x i8] c"\0AEscolha uma opera\C3\A7\C3\A3o: \00"
@.str.1 = [24 x i8] c"\0A 1- Imprimir Fibonacci\00"
@.str.2 = [23 x i8] c"\0A 2- Calcular fatorial\00"
@.str.3 = [20 x i8] c"\0A 3- Calcular sigma\00"
@.str.5 = [3 x i8] c"%d\00"
@str = [27 x i8] c"\0A-------------------------\00"
define i32 @menu() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0))
%4 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0))
%5 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0))
%6 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.3, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @str, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.5, i64 0, i64 0), i32* %1)
%9 = load i32, i32* %1
ret i32 %9
}