#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 errno;
int /*<<< orphan*/ printf(char *, ...);
int rmdir(char *);
int main(int argc, char **argv) {
  if (argc < 2) {
    printf("rmdir: missing operand\n");
    return -1;
  }
  int r = rmdir(argv[1]);
  if (r < 0) {
    printf("rmdir error: %d\n", errno);
    return errno;
  }
}


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)
cmpl   $0x2,-0x8(%rbp)
jge    115a <main+0x3a>
lea    0xeb9(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    1197 <main+0x77>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1030 <rmdir@plt>
mov    %eax,-0x14(%rbp)
cmpl   $0x0,-0x14(%rbp)
jge    1197 <main+0x77>
mov    0x2e65(%rip),%rax
mov    (%rax),%esi
lea    0xe94(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    0x2e4e(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
cmp    $0x1,%edi
jg     1149 <main+0x19>
lea    0xed4(%rip),%rdi
call   1030 <puts@plt>
mov    $0xffffffff,%eax
pop    %rbx
ret
mov    0x8(%rsi),%rdi
call   1040 <rmdir@plt>
mov    %eax,%ecx
xor    %eax,%eax
test   %ecx,%ecx
js     115c <main+0x2c>
pop    %rbx
ret
mov    0x2e7d(%rip),%rbx
mov    (%rbx),%esi
lea    0xe94(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    (%rbx),%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [24 x i8] c"rmdir: missing operand\0A\00"
@.str.1 = [17 x i8] c"rmdir error: %d\0A\00"
@errno = global i32 0
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = load i32, i32* %4
%8 = icmp slt i32 %7, 2
br i1 %8, label %9, label %11
9: ; preds = %2
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0))
store i32 -1, i32* %3
br label %22
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 1
%14 = load i8*, i8** %13
%15 = call i32 @rmdir(i8* %14)
store i32 %15, i32* %6
%16 = load i32, i32* %6
%17 = icmp slt i32 %16, 0
br i1 %17, label %18, label %22
18: ; preds = %11
%19 = load i32, i32* @errno
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0), i32 %19)
%21 = load i32, i32* @errno
store i32 %21, i32* %3
br label %22
22: ; preds = %9, %18, %11
%23 = load i32, i32* %3
ret i32 %23
}

LLVM IR (-O2):
@.str.1 = [17 x i8] c"rmdir error: %d\0A\00"
@errno = global i32 0
@str = [23 x i8] c"rmdir: missing operand\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp slt i32 %0, 2
br i1 %3, label %4, label %6
4: ; preds = %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @str, i64 0, i64 0))
br label %15
6: ; preds = %2
%7 = getelementptr inbounds i8*, i8** %1, i64 1
%8 = load i8*, i8** %7
%9 = tail call i32 @rmdir(i8* %8)
%10 = icmp slt i32 %9, 0
br i1 %10, label %11, label %15
11: ; preds = %6
%12 = load i32, i32* @errno
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0), i32 %12)
%14 = load i32, i32* @errno
br label %15
15: ; preds = %11, %6, %4
%16 = phi i32 [ -1, %4 ], [ %14, %11 ], [ 0, %6 ]
ret i32 %16
}