#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 */
scalar_t__ check_authentication(char *);
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char *argv[]) {
  if (argc < 2) {
    printf("Usage: %s <password>\n", argv[0]);
    exit(0);
  }
  if (check_authentication(argv[1])) {
    printf("\n-=-=-=-=-=-=-=-=-=-=-=-=-=-\n");
    printf("      Access Granted.\n");
    printf("-=-=-=-=-=-=-=-=-=-=-=-=-=-\n");
  } else {
    printf("\nAccess Denied.\n");
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
jge    116c <main+0x3c>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xea2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %edi,%edi
call   1050 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1040 <check_authentication@plt>
cmp    $0x0,%rax
je     11b2 <main+0x82>
lea    0xe8c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe9c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe71(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11c0 <main+0x90>
lea    0xe92(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x1,%edi
jle    1185 <main+0x45>
mov    0x8(%rsi),%rdi
call   1050 <check_authentication@plt>
test   %rax,%rax
je     1175 <main+0x35>
lea    0xecb(%rip),%rdi
call   1030 <puts@plt>
lea    0xedc(%rip),%rdi
call   1030 <puts@plt>
lea    0xeb4(%rip),%rdi
jmp    117c <main+0x3c>
lea    0xe9a(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret
mov    (%rsi),%rsi
lea    0xe71(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %edi,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@.str = [22 x i8] c"Usage: %s <password>\0A\00"
@.str.1 = [30 x i8] c"\0A-=-=-=-=-=-=-=-=-=-=-=-=-=-\0A\00"
@.str.2 = [23 x i8] c" Access Granted.\0A\00"
@.str.3 = [29 x i8] c"-=-=-=-=-=-=-=-=-=-=-=-=-=-\0A\00"
@.str.4 = [17 x i8] c"\0AAccess Denied.\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = load i32, i32* %4
%7 = icmp slt i32 %6, 2
br i1 %7, label %8, label %14
8: ; preds = %2
%9 = load i8**, i8*** %5
%10 = getelementptr inbounds i8*, i8** %9, i64 0
%11 = load i8*, i8** %10
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i8* %11)
%13 = call i32 @exit(i32 0)
unreachable
14: ; preds = %2
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 1
%17 = load i8*, i8** %16
%18 = call i64 @check_authentication(i8* %17)
%19 = icmp ne i64 %18, 0
br i1 %19, label %20, label %24
20: ; preds = %14
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.1, i64 0, i64 0))
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0))
%23 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.3, i64 0, i64 0))
br label %26
24: ; preds = %14
%25 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.4, i64 0, i64 0))
br label %26
26: ; preds = %24, %20
%27 = load i32, i32* %3
ret i32 %27
}

LLVM IR (-O2):
@.str = [22 x i8] c"Usage: %s <password>\0A\00"
@str = [16 x i8] c"\0AAccess Denied.\00"
@str.5 = [29 x i8] c"\0A-=-=-=-=-=-=-=-=-=-=-=-=-=-\00"
@str.6 = [22 x i8] c" Access Granted.\00"
@str.7 = [28 x i8] c"-=-=-=-=-=-=-=-=-=-=-=-=-=-\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp slt i32 %0, 2
br i1 %3, label %4, label %8
4: ; preds = %2
%5 = load i8*, i8** %1
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i8* %5)
%7 = tail call i32 @exit(i32 0)
unreachable
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = tail call i64 @check_authentication(i8* %10)
%12 = icmp eq i64 %11, 0
br i1 %12, label %16, label %13
13: ; preds = %8
%14 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @str.5, i64 0, i64 0))
%15 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str.6, i64 0, i64 0))
br label %16
16: ; preds = %8, %13
%17 = phi i8* [ getelementptr inbounds ([28 x i8], [28 x i8]* @str.7, i64 0, i64 0), %13 ], [ getelementptr inbounds ([16 x i8], [16 x i8]* @str, i64 0, i64 0), %8 ]
%18 = tail call i32 @puts(i8* dereferenceable(1) %17)
ret i32 0
}