#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*/ swap(int, int);
int main() {
  int m = 10;
  int n = 30;
  printf("m=%p,n=%p\n", &m, &n);
  printf("===%d,%d\n", m, n);
  swap(m, n);
  printf("==%d,%d\n", m, n);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0xa,-0x8(%rbp)
movl   $0x1e,-0xc(%rbp)
lea    0xebc(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xeab(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%edi
mov    -0xc(%rbp),%esi
call   1040 <swap@plt>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xe8d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
movl   $0xa,0x4(%rsp)
movl   $0x1e,(%rsp)
lea    0xec9(%rip),%rdi
lea    0x4(%rsp),%rsi
mov    %rsp,%rdx
xor    %eax,%eax
call   1030 <printf@plt>
mov    0x4(%rsp),%esi
mov    (%rsp),%edx
lea    0xeb7(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    0x4(%rsp),%edi
mov    (%rsp),%esi
call   1040 <swap@plt>
mov    0x4(%rsp),%esi
mov    (%rsp),%edx
lea    0xe97(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [11 x i8] c"m=%p,n=%p\0A\00"
@.str.1 = [10 x i8] c"===%d,%d\0A\00"
@.str.2 = [9 x i8] c"==%d,%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 10, i32* %2
store i32 30, i32* %3
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32* %2, i32* %3)
%5 = load i32, i32* %2
%6 = load i32, i32* %3
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i32 %5, i32 %6)
%8 = load i32, i32* %2
%9 = load i32, i32* %3
%10 = call i32 @swap(i32 %8, i32 %9)
%11 = load i32, i32* %2
%12 = load i32, i32* %3
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.2, i64 0, i64 0), i32 %11, i32 %12)
ret i32 0
}

LLVM IR (-O2):
@.str = [11 x i8] c"m=%p,n=%p\0A\00"
@.str.1 = [10 x i8] c"===%d,%d\0A\00"
@.str.2 = [9 x i8] c"==%d,%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
store i32 10, i32* %1
%4 = bitcast i32* %2 to i8*
store i32 30, i32* %2
%5 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32* %1, i32* %2)
%6 = load i32, i32* %1
%7 = load i32, i32* %2
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i32 %6, i32 %7)
%9 = load i32, i32* %1
%10 = load i32, i32* %2
%11 = call i32 @swap(i32 %9, i32 %10)
%12 = load i32, i32* %1
%13 = load i32, i32* %2
%14 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([9 x i8], [9 x i8]* @.str.2, i64 0, i64 0), i32 %12, i32 %13)
ret i32 0
}