#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*/ O_RDONLY;
int /*<<< orphan*/ data_bitmap_check(int);
int /*<<< orphan*/ inode_bitmap_check(int);
int /*<<< orphan*/ inode_table_check(int);
int open(char *, int /*<<< orphan*/);
int /*<<< orphan*/ printf(char *);
int /*<<< orphan*/ sb_check(int);
int main(int argc, char *argv[]) {
  int fd;
  if (argc != 2) {
    printf("Usage: efsck <device>\n");
    return -1;
  }
  fd = open(argv[1], O_RDONLY);
  sb_check(fd);
  inode_bitmap_check(fd);
  data_bitmap_check(fd);
  inode_table_check(fd);
  return 0;
}


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)
je     1198 <main+0x38>
lea    0xe79(%rip),%rdi
call   1030 <printf@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    11d8 <main+0x78>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    0x2e41(%rip),%rax
mov    (%rax),%esi
call   1060 <open@plt>
mov    %eax,-0x14(%rbp)
mov    -0x14(%rbp),%edi
call   1040 <sb_check@plt>
mov    -0x14(%rbp),%edi
call   1050 <inode_bitmap_check@plt>
mov    -0x14(%rbp),%edi
call   1080 <data_bitmap_check@plt>
mov    -0x14(%rbp),%edi
call   1070 <inode_table_check@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
cmp    $0x2,%edi
jne    119a <main+0x3a>
mov    0x8(%rsi),%rdi
mov    0x2e77(%rip),%rax
mov    (%rax),%esi
call   1060 <open@plt>
mov    %eax,%ebx
mov    %eax,%edi
call   1040 <sb_check@plt>
mov    %ebx,%edi
call   1050 <inode_bitmap_check@plt>
mov    %ebx,%edi
call   1080 <data_bitmap_check@plt>
mov    %ebx,%edi
call   1070 <inode_table_check@plt>
xor    %eax,%eax
pop    %rbx
ret
lea    0xe5f(%rip),%rdi
call   1030 <puts@plt>
mov    $0xffffffff,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [23 x i8] c"Usage: efsck <device>\0A\00"
@O_RDONLY = 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 ne i32 %7, 2
br i1 %8, label %9, label %11
9: ; preds = %2
%10 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
store i32 -1, i32* %3
br label %25
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 1
%14 = load i8*, i8** %13
%15 = load i32, i32* @O_RDONLY
%16 = call i32 @open(i8* %14, i32 %15)
store i32 %16, i32* %6
%17 = load i32, i32* %6
%18 = call i32 @sb_check(i32 %17)
%19 = load i32, i32* %6
%20 = call i32 @inode_bitmap_check(i32 %19)
%21 = load i32, i32* %6
%22 = call i32 @data_bitmap_check(i32 %21)
%23 = load i32, i32* %6
%24 = call i32 @inode_table_check(i32 %23)
store i32 0, i32* %3
br label %25
25: ; preds = %11, %9
%26 = load i32, i32* %3
ret i32 %26
}

LLVM IR (-O2):
@O_RDONLY = global i32 0
@str = [22 x i8] c"Usage: efsck <device>\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %6, label %4
4: ; preds = %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 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 = load i32, i32* @O_RDONLY
%10 = tail call i32 @open(i8* %8, i32 %9)
%11 = tail call i32 @sb_check(i32 %10)
%12 = tail call i32 @inode_bitmap_check(i32 %10)
%13 = tail call i32 @data_bitmap_check(i32 %10)
%14 = tail call i32 @inode_table_check(i32 %10)
br label %15
15: ; preds = %6, %4
%16 = phi i32 [ -1, %4 ], [ 0, %6 ]
ret i32 %16
}