#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*/ getch();
int /*<<< orphan*/ printf(char *, ...);
main() {
  int v1 = 3;
  int v2 = 22;
  int *p;
  int *q;
  p = &v1;
  q = p;
  *q = 20;
  printf("v1: %d\n", v1);
  printf("v2: %d\n", v2);
  printf("p: %p\n", p);
  printf("q: %p\n", q);
  printf("conteudo p: %d\n", *p);
  printf("conteudo q: %d\n", *q);
  getch();
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x3,-0x4(%rbp)
movl   $0x16,-0x8(%rbp)
lea    -0x4(%rbp),%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rax
mov    %rax,-0x18(%rbp)
mov    -0x18(%rbp),%rax
movl   $0x14,(%rax)
mov    -0x4(%rbp),%esi
lea    0xea6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%esi
lea    0xe9d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%rsi
lea    0xe93(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%rsi
lea    0xe88(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%rax
mov    (%rax),%esi
lea    0xe7b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%rax
mov    (%rax),%esi
lea    0xe77(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x0,%al
call   1040 <getch@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
movl   $0x14,0xc(%rsp)
lea    0xecc(%rip),%rdi
mov    $0x14,%esi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xec1(%rip),%rdi
mov    $0x16,%esi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xeb6(%rip),%rdi
lea    0xc(%rsp),%rbx
mov    %rbx,%rsi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xea7(%rip),%rdi
mov    %rbx,%rsi
xor    %eax,%eax
call   1030 <printf@plt>
mov    0xc(%rsp),%esi
lea    0xe99(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    0xc(%rsp),%esi
lea    0xe97(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
call   1040 <getch@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [8 x i8] c"v1: %d\0A\00"
@.str.1 = [8 x i8] c"v2: %d\0A\00"
@.str.2 = [7 x i8] c"p: %p\0A\00"
@.str.3 = [7 x i8] c"q: %p\0A\00"
@.str.4 = [16 x i8] c"conteudo p: %d\0A\00"
@.str.5 = [16 x i8] c"conteudo q: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32*
%4 = alloca i32*
store i32 3, i32* %1
store i32 22, i32* %2
store i32* %1, i32** %3
%5 = load i32*, i32** %3
store i32* %5, i32** %4
%6 = load i32*, i32** %4
store i32 20, i32* %6
%7 = load i32, i32* %1
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 %7)
%9 = load i32, i32* %2
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i32 %9)
%11 = load i32*, i32** %3
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0), i32* %11)
%13 = load i32*, i32** %4
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.3, i64 0, i64 0), i32* %13)
%15 = load i32*, i32** %3
%16 = load i32, i32* %15
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.4, i64 0, i64 0), i32 %16)
%18 = load i32*, i32** %4
%19 = load i32, i32* %18
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.5, i64 0, i64 0), i32 %19)
%21 = call i32 (...) @getch()
ret i32 0
}

LLVM IR (-O2):
@.str = [8 x i8] c"v1: %d\0A\00"
@.str.1 = [8 x i8] c"v2: %d\0A\00"
@.str.2 = [7 x i8] c"p: %p\0A\00"
@.str.3 = [7 x i8] c"q: %p\0A\00"
@.str.4 = [16 x i8] c"conteudo p: %d\0A\00"
@.str.5 = [16 x i8] c"conteudo q: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
store i32 20, i32* %1
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 20)
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i32 22)
%5 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0), i32* %1)
%6 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.3, i64 0, i64 0), i32* %1)
%7 = load i32, i32* %1
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.4, i64 0, i64 0), i32 %7)
%9 = load i32, i32* %1
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.5, i64 0, i64 0), i32 %9)
%11 = call i32 (...) @getch()
ret i32 0
}