#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 */
typedef int /*<<< orphan*/ pid_t;

/* Variables and functions */
int /*<<< orphan*/ EXIT_FAILURE;
int backup();
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ server(int, char **, int);
int /*<<< orphan*/ stderr;
int main(int argc, char *argv[]) {
  pid_t cpid;
  char buf;
  if (argc != 2) {
    fprintf(stderr, "Usage: %s <string>\n", argv[0]);
    exit(EXIT_FAILURE);
  }
  int count = backup();
  server(argc, argv, count);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x4(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x4(%rbp)
je     1183 <main+0x43>
mov    0x2e80(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe90(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e5c(%rip),%rax
mov    (%rax),%edi
call   1060 <exit@plt>
mov    $0x0,%al
call   1040 <backup@plt>
mov    %eax,-0x1c(%rbp)
mov    -0x4(%rbp),%edi
mov    -0x10(%rbp),%rsi
mov    -0x1c(%rbp),%edx
call   1050 <server@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    %rsi,%rbx
cmp    $0x2,%edi
jne    1163 <main+0x23>
xor    %eax,%eax
call   1040 <backup@plt>
mov    $0x2,%edi
mov    %rbx,%rsi
mov    %eax,%edx
call   1050 <server@plt>
xor    %eax,%eax
pop    %rbx
ret
mov    0x2e76(%rip),%rax
mov    (%rax),%edi
mov    (%rbx),%rdx
lea    0xe8a(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e56(%rip),%rax
mov    (%rax),%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [20 x i8] c"Usage: %s <string>\0A\00"
@EXIT_FAILURE = global i32 0
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i8**
%5 = alloca i32
%6 = alloca i8
%7 = alloca i32
store i32 %0, i32* %3
store i8** %1, i8*** %4
%8 = load i32, i32* %3
%9 = icmp ne i32 %8, 2
br i1 %9, label %10, label %18
10: ; preds = %2
%11 = load i32, i32* @stderr
%12 = load i8**, i8*** %4
%13 = getelementptr inbounds i8*, i8** %12, i64 0
%14 = load i8*, i8** %13
%15 = call i32 @fprintf(i32 %11, i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i64 0, i64 0), i8* %14)
%16 = load i32, i32* @EXIT_FAILURE
%17 = call i32 @exit(i32 %16)
unreachable
18: ; preds = %2
%19 = call i32 (...) @backup()
store i32 %19, i32* %7
%20 = load i32, i32* %3
%21 = load i8**, i8*** %4
%22 = load i32, i32* %7
%23 = call i32 @server(i32 %20, i8** %21, i32 %22)
ret i32 0
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [20 x i8] c"Usage: %s <string>\0A\00"
@EXIT_FAILURE = global i32 0
define i32 @main(i32 %0, i8** %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %10, label %4
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = load i8*, i8** %1
%7 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i64 0, i64 0), i8* %6)
%8 = load i32, i32* @EXIT_FAILURE
%9 = tail call i32 @exit(i32 %8)
unreachable
10: ; preds = %2
%11 = tail call i32 (...) @backup()
%12 = tail call i32 @server(i32 2, i8** %1, i32 %11)
ret i32 0
}