#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 swap(int x, int y) {
  int t;
  printf("In subfun, before swap: ");
  printf("x=%d,y=%d\n", x, y);
  t = x, x = y, y = t;
  printf("In subfun, after swap: ");
  printf("x=%d,y=%d\n", x, y);
  return 0;
}


x86 assembly (clang, -O0):
<swap>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
mov    %esi,-0x8(%rbp)
lea    0xedb(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x4(%rbp),%esi
mov    -0x8(%rbp),%edx
lea    0xee0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0x8(%rbp),%eax
mov    %eax,-0x4(%rbp)
mov    -0xc(%rbp),%eax
mov    %eax,-0x8(%rbp)
lea    0xecb(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x4(%rbp),%esi
mov    -0x8(%rbp),%edx
lea    0xeac(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<swap>:
push   %rbp
push   %r14
push   %rbx
mov    %esi,%ebx
mov    %edi,%ebp
lea    0xee1(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xeec(%rip),%r14
mov    %r14,%rdi
mov    %ebp,%esi
mov    %ebx,%edx
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xee2(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    %ebp,%edx
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
@.str = [25 x i8] c"In subfun, before swap: \00"
@.str.1 = [11 x i8] c"x=%d,y=%d\0A\00"
@.str.2 = [24 x i8] c"In subfun, after swap: \00"
define i32 @swap(i32 %0, i32 %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 %0, i32* %3
store i32 %1, i32* %4
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%7 = load i32, i32* %3
%8 = load i32, i32* %4
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 %7, i32 %8)
%10 = load i32, i32* %3
store i32 %10, i32* %5
%11 = load i32, i32* %4
store i32 %11, i32* %3
%12 = load i32, i32* %5
store i32 %12, i32* %4
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0))
%14 = load i32, i32* %3
%15 = load i32, i32* %4
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 %14, i32 %15)
ret i32 0
}

LLVM IR (-O2):
@.str = [25 x i8] c"In subfun, before swap: \00"
@.str.1 = [11 x i8] c"x=%d,y=%d\0A\00"
@.str.2 = [24 x i8] c"In subfun, after swap: \00"
define i32 @swap(i32 %0, i32 %1) {
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 %0, i32 %1)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0))
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 %1, i32 %0)
ret i32 0
}