#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*/ puts(char *);
size_t strlen(char *);
int xor_gate(char, char);
int main(int argc, char *argv[]) {
  if (argc == 3 && (strlen(argv[1]) == strlen(argv[2]))) {
    size_t argSize = strlen(argv[1]);
    printf("Result of XOR: ");
    for (int i = 0; i < argSize; i++) {
      printf("%c", xor_gate(argv[1][i], argv[2][i]));
    }
    puts("\n");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x3,-0x8(%rbp)
jne    1213 <main+0xd3>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1040 <strlen@plt>
mov    %rax,-0x28(%rbp)
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   1040 <strlen@plt>
mov    %rax,%rcx
mov    -0x28(%rbp),%rax
cmp    %rcx,%rax
jne    1213 <main+0xd3>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1040 <strlen@plt>
mov    %rax,-0x18(%rbp)
lea    0xe5a(%rip),%rdi
mov    $0x0,%al
call   1050 <printf@plt>
movl   $0x0,-0x1c(%rbp)
movslq -0x1c(%rbp),%rax
cmp    -0x18(%rbp),%rax
jae    1207 <main+0xc7>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rax
movslq -0x1c(%rbp),%rcx
mov    (%rax,%rcx,1),%dl
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rax
movslq -0x1c(%rbp),%rcx
movsbl %dl,%edi
movsbl (%rax,%rcx,1),%esi
call   1060 <xor_gate@plt>
mov    %eax,%esi
lea    0xe1e(%rip),%rdi
mov    $0x0,%al
call   1050 <printf@plt>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    11b4 <main+0x74>
lea    0xe05(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
cmp    $0x3,%edi
jne    11c1 <main+0x71>
mov    %rsi,%r15
mov    0x8(%rsi),%rdi
call   1050 <strlen@plt>
mov    %rax,%r14
mov    0x10(%r15),%rdi
call   1050 <strlen@plt>
cmp    %rax,%r14
jne    11c1 <main+0x71>
lea    0xe82(%rip),%rdi
xor    %eax,%eax
call   1060 <printf@plt>
test   %r14,%r14
je     11b5 <main+0x65>
xor    %ebx,%ebx
nopl   0x0(%rax)
mov    0x8(%r15),%rax
mov    0x10(%r15),%rcx
movsbl (%rax,%rbx,1),%edi
movsbl (%rcx,%rbx,1),%esi
call   1070 <xor_gate@plt>
mov    %eax,%edi
call   1030 <putchar@plt>
add    $0x1,%rbx
cmp    %rbx,%r14
jne    1190 <main+0x40>
lea    0xe54(%rip),%rdi
call   1040 <puts@plt>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [16 x i8] c"Result of XOR: \00"
@.str.1 = [3 x i8] c"%c\00"
@.str.2 = [2 x i8] c"\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i64
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = icmp eq i32 %8, 3
br i1 %9, label %10, label %53
10: ; preds = %2
%11 = load i8**, i8*** %5
%12 = getelementptr inbounds i8*, i8** %11, i64 1
%13 = load i8*, i8** %12
%14 = call i64 @strlen(i8* %13)
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 2
%17 = load i8*, i8** %16
%18 = call i64 @strlen(i8* %17)
%19 = icmp eq i64 %14, %18
br i1 %19, label %20, label %53
20: ; preds = %10
%21 = load i8**, i8*** %5
%22 = getelementptr inbounds i8*, i8** %21, i64 1
%23 = load i8*, i8** %22
%24 = call i64 @strlen(i8* %23)
store i64 %24, i64* %6
%25 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %7
br label %26
26: ; preds = %48, %20
%27 = load i32, i32* %7
%28 = sext i32 %27 to i64
%29 = load i64, i64* %6
%30 = icmp ult i64 %28, %29
br i1 %30, label %31, label %51
31: ; preds = %26
%32 = load i8**, i8*** %5
%33 = getelementptr inbounds i8*, i8** %32, i64 1
%34 = load i8*, i8** %33
%35 = load i32, i32* %7
%36 = sext i32 %35 to i64
%37 = getelementptr inbounds i8, i8* %34, i64 %36
%38 = load i8, i8* %37
%39 = load i8**, i8*** %5
%40 = getelementptr inbounds i8*, i8** %39, i64 2
%41 = load i8*, i8** %40
%42 = load i32, i32* %7
%43 = sext i32 %42 to i64
%44 = getelementptr inbounds i8, i8* %41, i64 %43
%45 = load i8, i8* %44
%46 = call i32 @xor_gate(i8 signext %38, i8 signext %45)
%47 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %46)
br label %48
48: ; preds = %31
%49 = load i32, i32* %7
%50 = add nsw i32 %49, 1
store i32 %50, i32* %7
br label %26
51: ; preds = %26
%52 = call i32 @puts(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
br label %53
53: ; preds = %51, %10, %2
ret i32 0
}

LLVM IR (-O2):
@.str = [16 x i8] c"Result of XOR: \00"
@.str.2 = [2 x i8] c"\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
br i1 %3, label %4, label %29
4: ; preds = %2
%5 = getelementptr inbounds i8*, i8** %1, i64 1
%6 = load i8*, i8** %5
%7 = tail call i64 @strlen(i8* dereferenceable(1) %6)
%8 = getelementptr inbounds i8*, i8** %1, i64 2
%9 = load i8*, i8** %8
%10 = tail call i64 @strlen(i8* dereferenceable(1) %9)
%11 = icmp eq i64 %7, %10
br i1 %11, label %12, label %29
12: ; preds = %4
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0))
%14 = icmp eq i64 %7, 0
br i1 %14, label %15, label %17
15: ; preds = %17, %12
%16 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
br label %29
17: ; preds = %12, %17
%18 = phi i64 [ %27, %17 ], [ 0, %12 ]
%19 = load i8*, i8** %5
%20 = getelementptr inbounds i8, i8* %19, i64 %18
%21 = load i8, i8* %20
%22 = load i8*, i8** %8
%23 = getelementptr inbounds i8, i8* %22, i64 %18
%24 = load i8, i8* %23
%25 = tail call i32 @xor_gate(i8 signext %21, i8 signext %24)
%26 = tail call i32 @putchar(i32 %25)
%27 = add nuw i64 %18, 1
%28 = icmp eq i64 %27, %7
br i1 %28, label %15, label %17
29: ; preds = %15, %4, %2
ret i32 0
}