#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*/ puts(char *);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  int num;
  puts("Entre com um numero de 1 a 3:");
  scanf("%d", &num);
  switch (num) {
  case 1:
    puts("Opcao 1 escolhida!");
    break;
  case 2:
    puts("Opcao 2 escolhida!");
    break;
  case 3:
    puts("Opcao 3 escolhida!");
    break;
  default:
    puts("Opcao inválida!");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
call   1030 <puts@plt>
lea    0xedc(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    %eax,-0xc(%rbp)
sub    $0x1,%eax
je     1181 <main+0x61>
jmp    115f <main+0x3f>
mov    -0xc(%rbp),%eax
sub    $0x2,%eax
je     1192 <main+0x72>
jmp    1170 <main+0x50>
mov    -0xc(%rbp),%eax
sub    $0x3,%eax
je     11a3 <main+0x83>
jmp    11b4 <main+0x94>
lea    0xe99(%rip),%rdi
call   1030 <puts@plt>
jmp    11c0 <main+0xa0>
lea    0xe9b(%rip),%rdi
call   1030 <puts@plt>
jmp    11c0 <main+0xa0>
lea    0xe9d(%rip),%rdi
call   1030 <puts@plt>
jmp    11c0 <main+0xa0>
lea    0xe9f(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed8(%rip),%rdi
call   1030 <puts@plt>
lea    0xeea(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%eax
add    $0xffffffff,%eax
cmp    $0x2,%eax
ja     115c <main+0x3c>
cltq
lea    0xf19(%rip),%rcx
movslq (%rcx,%rax,4),%rdi
add    %rcx,%rdi
jmp    1163 <main+0x43>
lea    0xef7(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [30 x i8] c"Entre com um numero de 1 a 3:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [19 x i8] c"Opcao 1 escolhida!\00"
@.str.3 = [19 x i8] c"Opcao 2 escolhida!\00"
@.str.4 = [19 x i8] c"Opcao 3 escolhida!\00"
@.str.5 = [17 x i8] c"Opcao inv\C3\A1lida!\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @puts(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%5 = load i32, i32* %2
switch i32 %5, label %12 [
i32 1, label %6
i32 2, label %8
i32 3, label %10
]
6: ; preds = %0
%7 = call i32 @puts(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0))
br label %14
8: ; preds = %0
%9 = call i32 @puts(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.3, i64 0, i64 0))
br label %14
10: ; preds = %0
%11 = call i32 @puts(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.4, i64 0, i64 0))
br label %14
12: ; preds = %0
%13 = call i32 @puts(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.5, i64 0, i64 0))
br label %14
14: ; preds = %12, %10, %8, %6
ret i32 0
}

LLVM IR (-O2):
@.str = [30 x i8] c"Entre com um numero de 1 a 3:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [19 x i8] c"Opcao 1 escolhida!\00"
@.str.3 = [19 x i8] c"Opcao 2 escolhida!\00"
@.str.4 = [19 x i8] c"Opcao 3 escolhida!\00"
@.str.5 = [17 x i8] c"Opcao inv\C3\A1lida!\00"
@reltable.main = [3 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([19 x i8]* @.str.2 to i64), i64 ptrtoint ([3 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([19 x i8]* @.str.3 to i64), i64 ptrtoint ([3 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([19 x i8]* @.str.4 to i64), i64 ptrtoint ([3 x i32]* @reltable.main to i64)) to i32)]
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = add i32 %5, -1
%7 = icmp ult i32 %6, 3
br i1 %7, label %8, label %12
8: ; preds = %0
%9 = sext i32 %6 to i64
%10 = shl i64 %9, 2
%11 = call i8* @llvm.load.relative.i64(i8* bitcast ([3 x i32]* @reltable.main to i8*), i64 %10)
br label %12
12: ; preds = %0, %8
%13 = phi i8* [ %11, %8 ], [ getelementptr inbounds ([17 x i8], [17 x i8]* @.str.5, i64 0, i64 0), %0 ]
%14 = call i32 @puts(i8* dereferenceable(1) %13)
ret i32 0
}