#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() {
  int q = 12;
  int *qptr;
  qptr = &q;
  printf("q的地址是：%p\n qptr的内容是%p\n", &q, qptr);
  printf("q的值是：%d\n *qptr值是：%d\n", q, *qptr);
  printf("&*qptr = %p,*&qptr = %p\n", &*qptr, *&qptr);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0xc,-0x8(%rbp)
lea    -0x8(%rbp),%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rdx
lea    0xec7(%rip),%rdi
lea    -0x8(%rbp),%rsi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%esi
mov    -0x10(%rbp),%rax
mov    (%rax),%edx
lea    0xed4(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%rsi
mov    -0x10(%rbp),%rdx
lea    0xee1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
movl   $0xc,0xc(%rsp)
lea    0xedc(%rip),%rdi
lea    0xc(%rsp),%rbx
mov    %rbx,%rsi
mov    %rbx,%rdx
xor    %eax,%eax
call   1030 <printf@plt>
mov    0xc(%rsp),%edx
lea    0xee7(%rip),%rdi
mov    %edx,%esi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xefa(%rip),%rdi
mov    %rbx,%rsi
mov    %rbx,%rdx
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [40 x i8] c"q\E7\9A\84\E5\9C\B0\E5\9D\80\E6\98\AF\EF\BC\9A%p\0A qptr\E7\9A\84\E5\86\85\E5\AE\B9\E6\98\AF%p\0A\00"
@.str.1 = [35 x i8] c"q\E7\9A\84\E5\80\BC\E6\98\AF\EF\BC\9A%d\0A *qptr\E5\80\BC\E6\98\AF\EF\BC\9A%d\0A\00"
@.str.2 = [25 x i8] c"&*qptr = %p,*&qptr = %p\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32*
store i32 0, i32* %1
store i32 12, i32* %2
store i32* %2, i32** %3
%4 = load i32*, i32** %3
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str, i64 0, i64 0), i32* %2, i32* %4)
%6 = load i32, i32* %2
%7 = load i32*, i32** %3
%8 = load i32, i32* %7
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.1, i64 0, i64 0), i32 %6, i32 %8)
%10 = load i32*, i32** %3
%11 = load i32*, i32** %3
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.2, i64 0, i64 0), i32* %10, i32* %11)
ret i32 0
}

LLVM IR (-O2):
@.str = [40 x i8] c"q\E7\9A\84\E5\9C\B0\E5\9D\80\E6\98\AF\EF\BC\9A%p\0A qptr\E7\9A\84\E5\86\85\E5\AE\B9\E6\98\AF%p\0A\00"
@.str.1 = [35 x i8] c"q\E7\9A\84\E5\80\BC\E6\98\AF\EF\BC\9A%d\0A *qptr\E5\80\BC\E6\98\AF\EF\BC\9A%d\0A\00"
@.str.2 = [25 x i8] c"&*qptr = %p,*&qptr = %p\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
store i32 12, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([40 x i8], [40 x i8]* @.str, i64 0, i64 0), i32* %1, i32* %1)
%4 = load i32, i32* %1
%5 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @.str.1, i64 0, i64 0), i32 %4, i32 %4)
%6 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str.2, i64 0, i64 0), i32* %1, i32* %1)
ret i32 0
}