#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 main(void) {
  int a;
  int *a_ptr;
  a = 7;
  a_ptr = &a;
  printf("The address of &a is %p\n", &a);
  printf("The value of a_ptr is %p\n\n", a_ptr);
  printf("The value of a is %d\n", a);
  printf("The value of *a_ptr is %d\n\n", *a_ptr);
  printf("%p\n", &*a_ptr);
  printf("%p\n", *&a_ptr);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x7,-0x8(%rbp)
lea    -0x8(%rbp),%rax
mov    %rax,-0x10(%rbp)
lea    0xecb(%rip),%rdi
lea    -0x8(%rbp),%rsi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%rsi
lea    0xece(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%esi
lea    0xed8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%rax
mov    (%rax),%esi
lea    0xeda(%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    -0x10(%rbp),%rsi
lea    0xe81(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
movl   $0x7,0x4(%rsp)
lea    0xedd(%rip),%rdi
lea    0x4(%rsp),%r14
mov    %r14,%rsi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xee0(%rip),%rdi
mov    %r14,%rsi
xor    %eax,%eax
call   1030 <printf@plt>
mov    0x4(%rsp),%esi
lea    0xee6(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    0x4(%rsp),%esi
lea    0xeea(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xea7(%rip),%rbx
mov    %rbx,%rdi
mov    %r14,%rsi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    %r14,%rsi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [25 x i8] c"The address of &a is %p\0A\00"
@.str.1 = [27 x i8] c"The value of a_ptr is %p\0A\0A\00"
@.str.2 = [22 x i8] c"The value of a is %d\0A\00"
@.str.3 = [28 x i8] c"The value of *a_ptr is %d\0A\0A\00"
@.str.4 = [4 x i8] c"%p\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32*
store i32 0, i32* %1
store i32 7, i32* %2
store i32* %2, i32** %3
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0), i32* %2)
%5 = load i32*, i32** %3
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.1, i64 0, i64 0), i32* %5)
%7 = load i32, i32* %2
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.2, i64 0, i64 0), i32 %7)
%9 = load i32*, i32** %3
%10 = load i32, i32* %9
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.3, i64 0, i64 0), i32 %10)
%12 = load i32*, i32** %3
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0), i32* %12)
%14 = load i32*, i32** %3
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0), i32* %14)
ret i32 0
}

LLVM IR (-O2):
@.str = [25 x i8] c"The address of &a is %p\0A\00"
@.str.1 = [27 x i8] c"The value of a_ptr is %p\0A\0A\00"
@.str.2 = [22 x i8] c"The value of a is %d\0A\00"
@.str.3 = [28 x i8] c"The value of *a_ptr is %d\0A\0A\00"
@.str.4 = [4 x i8] c"%p\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
store i32 7, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0), i32* %1)
%4 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @.str.2, i64 0, i64 0), i32 %5)
%7 = load i32, i32* %1
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @.str.3, i64 0, i64 0), i32 %7)
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0), i32* %1)
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0), i32* %1)
ret i32 0
}