#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*/ mode_t;

/* Variables and functions */
int errno;
int /*<<< orphan*/ fflush(int /*<<< orphan*/ *);
int handle_zng(int);
int mkdir(char *, int /*<<< orphan*/);
int /*<<< orphan*/ printf(char *, ...);
int mkdir_test(char *dir, mode_t mode) {
  int ret, save_errno;
  int passed;
  printf("mkdir(): dir=%s\n", (((dir) == NULL) ? "(null)" : (dir)));
  fflush(NULL);
  passed = handle_zng(ret = mkdir(dir, mode));
  save_errno = errno;
  switch (passed) {
  case -1:
  case 0:
    printf("\t\tret = %d\n", ret);
    printf("\tSucceeded Phase 1\n");
    fflush(NULL);
    break;
  case -2:
    printf("\tFailed Phase 1: returned undefined value! "
           "ret = %d\n",
           ret);
    fflush(NULL);
    break;
  default:
    printf("Internal syscalltester error: passed = %d\n", passed);
    fflush(NULL);
    break;
  }
  errno = save_errno;
  return ret;
}


x86 assembly (clang, -O0):
<mkdir_test>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
cmpq   $0x0,-0x8(%rbp)
jne    116a <mkdir_test+0x2a>
lea    0xeb0(%rip),%rax
mov    %rax,-0x20(%rbp)
jmp    1172 <mkdir_test+0x32>
mov    -0x8(%rbp),%rax
mov    %rax,-0x20(%rbp)
mov    -0x20(%rbp),%rsi
lea    0xe83(%rip),%rdi
xor    %eax,%eax
mov    %eax,-0x28(%rbp)
call   1050 <printf@plt>
mov    -0x28(%rbp),%eax
mov    %eax,%edi
call   1060 <fflush@plt>
mov    -0x8(%rbp),%rdi
mov    -0xc(%rbp),%esi
call   1030 <mkdir@plt>
mov    %eax,%edi
mov    %edi,-0x10(%rbp)
call   1040 <handle_zng@plt>
mov    %eax,-0x18(%rbp)
mov    0x2e2f(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x14(%rbp)
mov    -0x18(%rbp),%eax
mov    %eax,-0x24(%rbp)
sub    $0xfffffffe,%eax
je     120b <mkdir_test+0xcb>
jmp    11ca <mkdir_test+0x8a>
mov    -0x24(%rbp),%eax
add    $0x1,%eax
sub    $0x1,%eax
ja     122a <mkdir_test+0xea>
jmp    11de <mkdir_test+0x9e>
mov    -0x10(%rbp),%esi
lea    0xe30(%rip),%rdi
mov    $0x0,%al
call   1050 <printf@plt>
lea    0xe2e(%rip),%rdi
mov    $0x0,%al
call   1050 <printf@plt>
xor    %eax,%eax
mov    %eax,%edi
call   1060 <fflush@plt>
jmp    1244 <mkdir_test+0x104>
mov    -0x10(%rbp),%esi
lea    0xe23(%rip),%rdi
mov    $0x0,%al
call   1050 <printf@plt>
xor    %eax,%eax
mov    %eax,%edi
call   1060 <fflush@plt>
jmp    1244 <mkdir_test+0x104>
mov    -0x18(%rbp),%esi
lea    0xe39(%rip),%rdi
mov    $0x0,%al
call   1050 <printf@plt>
xor    %eax,%eax
mov    %eax,%edi
call   1060 <fflush@plt>
mov    -0x14(%rbp),%ecx
mov    0x2d92(%rip),%rax
mov    %ecx,(%rax)
mov    -0x10(%rbp),%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<mkdir_test>:
push   %rbp
push   %r14
push   %rbx
mov    %esi,%ebp
mov    %rdi,%rbx
test   %rdi,%rdi
lea    0xeae(%rip),%rsi
cmovne %rdi,%rsi
lea    0xe92(%rip),%rdi
xor    %eax,%eax
call   1060 <printf@plt>
xor    %edi,%edi
call   1070 <fflush@plt>
mov    %rbx,%rdi
mov    %ebp,%esi
call   1030 <mkdir@plt>
mov    %eax,%ebx
mov    %eax,%edi
call   1050 <handle_zng@plt>
mov    0x2e4a(%rip),%r14
mov    (%r14),%ebp
lea    0x1(%rax),%ecx
cmp    $0x2,%ecx
jae    11bf <mkdir_test+0x6f>
lea    0xe70(%rip),%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1060 <printf@plt>
lea    0xecc(%rip),%rdi
call   1040 <puts@plt>
jmp    11df <mkdir_test+0x8f>
cmp    $0xfffffffe,%eax
jne    11cf <mkdir_test+0x7f>
lea    0xe59(%rip),%rdi
mov    %ebx,%esi
jmp    11d8 <mkdir_test+0x88>
lea    0xe83(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1060 <printf@plt>
xor    %edi,%edi
call   1070 <fflush@plt>
mov    %ebp,(%r14)
mov    %ebx,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
@.str = [17 x i8] c"mkdir(): dir=%s\0A\00"
@.str.1 = [7 x i8] c"(null)\00"
@errno = global i32 0
@.str.2 = [12 x i8] c"\09\09ret = %d\0A\00"
@.str.3 = [20 x i8] c"\09Succeeded Phase 1\0A\00"
@.str.4 = [53 x i8] c"\09Failed Phase 1: returned undefined value! ret = %d\0A\00"
@.str.5 = [43 x i8] c"Internal syscalltester error: passed = %d\0A\00"
define i32 @mkdir_test(i8* %0, i32 %1) {
%3 = alloca i8*
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
%7 = alloca i32
store i8* %0, i8** %3
store i32 %1, i32* %4
%8 = load i8*, i8** %3
%9 = icmp eq i8* %8, null
br i1 %9, label %10, label %11
10: ; preds = %2
br label %13
11: ; preds = %2
%12 = load i8*, i8** %3
br label %13
13: ; preds = %11, %10
%14 = phi i8* [ getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), %10 ], [ %12, %11 ]
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), i8* %14)
%16 = call i32 @fflush(i32* null)
%17 = load i8*, i8** %3
%18 = load i32, i32* %4
%19 = call i32 @mkdir(i8* %17, i32 %18)
store i32 %19, i32* %5
%20 = call i32 @handle_zng(i32 %19)
store i32 %20, i32* %7
%21 = load i32, i32* @errno
store i32 %21, i32* %6
%22 = load i32, i32* %7
switch i32 %22, label %32 [
i32 -1, label %23
i32 0, label %23
i32 -2, label %28
]
23: ; preds = %13, %13
%24 = load i32, i32* %5
%25 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0), i32 %24)
%26 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.3, i64 0, i64 0))
%27 = call i32 @fflush(i32* null)
br label %36
28: ; preds = %13
%29 = load i32, i32* %5
%30 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([53 x i8], [53 x i8]* @.str.4, i64 0, i64 0), i32 %29)
%31 = call i32 @fflush(i32* null)
br label %36
32: ; preds = %13
%33 = load i32, i32* %7
%34 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str.5, i64 0, i64 0), i32 %33)
%35 = call i32 @fflush(i32* null)
br label %36
36: ; preds = %32, %28, %23
%37 = load i32, i32* %6
store i32 %37, i32* @errno
%38 = load i32, i32* %5
ret i32 %38
}

LLVM IR (-O2):
@.str = [17 x i8] c"mkdir(): dir=%s\0A\00"
@.str.1 = [7 x i8] c"(null)\00"
@errno = global i32 0
@.str.2 = [12 x i8] c"\09\09ret = %d\0A\00"
@.str.4 = [53 x i8] c"\09Failed Phase 1: returned undefined value! ret = %d\0A\00"
@.str.5 = [43 x i8] c"Internal syscalltester error: passed = %d\0A\00"
@str = [19 x i8] c"\09Succeeded Phase 1\00"
define i32 @mkdir_test(i8* %0, i32 %1) {
%3 = icmp eq i8* %0, null
%4 = select i1 %3, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), i8* %0
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), i8* %4)
%6 = tail call i32 @fflush(i32* null)
%7 = tail call i32 @mkdir(i8* %0, i32 %1)
%8 = tail call i32 @handle_zng(i32 %7)
%9 = load i32, i32* @errno
switch i32 %8, label %15 [
i32 -1, label %10
i32 0, label %10
i32 -2, label %13
]
10: ; preds = %2, %2
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0), i32 %7)
%12 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @str, i64 0, i64 0))
br label %17
13: ; preds = %2
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([53 x i8], [53 x i8]* @.str.4, i64 0, i64 0), i32 %7)
br label %17
15: ; preds = %2
%16 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([43 x i8], [43 x i8]* @.str.5, i64 0, i64 0), i32 %8)
br label %17
17: ; preds = %15, %13, %10
%18 = tail call i32 @fflush(i32* null)
store i32 %9, i32* @errno
ret i32 %7
}