#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*/ scanf(char *, int *);
int main(int argc, char *argv[]) {
  int x, y, z;
  printf("x = ");
  scanf("%d", &x);
  printf("y = ");
  scanf("%d", &y);
  z = ((x + y) * (x - y));
  printf("(x+y)(x-y) = %d\n", z);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
lea    0xec3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeba(%rip),%rdi
lea    -0x14(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xead(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe9c(%rip),%rdi
lea    -0x18(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x14(%rbp),%eax
add    -0x18(%rbp),%eax
mov    -0x14(%rbp),%ecx
sub    -0x18(%rbp),%ecx
imul   %ecx,%eax
mov    %eax,-0x1c(%rbp)
mov    -0x1c(%rbp),%esi
lea    0xe7f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xed4(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xecb(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1040 <scanf@plt>
lea    0xeba(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1040 <scanf@plt>
mov    0xc(%rsp),%esi
mov    0x8(%rsp),%eax
lea    (%rax,%rsi,1),%ecx
sub    %eax,%esi
imul   %ecx,%esi
lea    0xe94(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

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

LLVM IR (-O2):
@.str = [5 x i8] c"x = \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [5 x i8] c"y = \00"
@.str.3 = [17 x i8] c"(x+y)(x-y) = %d\0A\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = alloca i32
%4 = alloca i32
%5 = bitcast i32* %3 to i8*
%6 = bitcast i32* %4 to i8*
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %3)
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %4)
%11 = load i32, i32* %3
%12 = load i32, i32* %4
%13 = add nsw i32 %12, %11
%14 = sub nsw i32 %11, %12
%15 = mul nsw i32 %13, %14
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @.str.3, i64 0, i64 0), i32 %15)
ret i32 0
}