#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*/ atoi(char *);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int open(char *, int /*<<< orphan*/);
int partx_del_partition(int, int /*<<< orphan*/);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ stderr;
int main(int argc, char **argv) {
  int fd;
  if (argc != 3) {
    fprintf(stderr, "usage: %s diskdevice partitionnr\n", argv[0]);
    exit(1);
  }
  if ((fd = open(argv[1], O_RDONLY)) < 0) {
    perror(argv[1]);
    exit(1);
  }
  if (partx_del_partition(fd, atoi(argv[2])) == -1) {
    perror("BLKPG");
    exit(1);
  }
  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   $0x3,-0x8(%rbp)
je     11a6 <main+0x46>
mov    0x2e51(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe69(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x1,%edi
call   1080 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    0x2e33(%rip),%rax
mov    (%rax),%esi
call   1050 <open@plt>
mov    %eax,-0x14(%rbp)
cmp    $0x0,%eax
jge    11df <main+0x7f>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1060 <perror@plt>
mov    $0x1,%edi
call   1080 <exit@plt>
mov    -0x14(%rbp),%eax
mov    %eax,-0x18(%rbp)
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   1070 <atoi@plt>
mov    -0x18(%rbp),%edi
mov    %eax,%esi
call   1030 <partx_del_partition@plt>
cmp    $0xffffffff,%eax
jne    121b <main+0xbb>
lea    0xe16(%rip),%rdi
call   1060 <perror@plt>
mov    $0x1,%edi
call   1080 <exit@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
push   %rax
mov    %rsi,%rbx
cmp    $0x3,%edi
jne    11a3 <main+0x43>
mov    0x8(%rbx),%rdi
mov    0x2e72(%rip),%rax
mov    (%rax),%esi
call   1050 <open@plt>
test   %eax,%eax
js     11c5 <main+0x65>
mov    %eax,%ebp
mov    0x10(%rbx),%rdi
call   1070 <atoi@plt>
mov    %ebp,%edi
mov    %eax,%esi
call   1030 <partx_del_partition@plt>
cmp    $0xffffffff,%eax
je     11cb <main+0x6b>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret
mov    0x2e2e(%rip),%rax
mov    (%rax),%edi
mov    (%rbx),%rdx
lea    0xe4a(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x1,%edi
call   1080 <exit@plt>
mov    0x8(%rbx),%rdi
jmp    11d2 <main+0x72>
lea    0xe50(%rip),%rdi
call   1060 <perror@plt>
mov    $0x1,%edi
call   1080 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [34 x i8] c"usage: %s diskdevice partitionnr\0A\00"
@O_RDONLY = global i32 0
@.str.1 = [6 x i8] c"BLKPG\00"
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, 3
br i1 %8, label %9, label %16
9: ; preds = %2
%10 = load i32, i32* @stderr
%11 = load i8**, i8*** %5
%12 = getelementptr inbounds i8*, i8** %11, i64 0
%13 = load i8*, i8** %12
%14 = call i32 @fprintf(i32 %10, i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str, i64 0, i64 0), i8* %13)
%15 = call i32 @exit(i32 1)
unreachable
16: ; preds = %2
%17 = load i8**, i8*** %5
%18 = getelementptr inbounds i8*, i8** %17, i64 1
%19 = load i8*, i8** %18
%20 = load i32, i32* @O_RDONLY
%21 = call i32 @open(i8* %19, i32 %20)
store i32 %21, i32* %6
%22 = icmp slt i32 %21, 0
br i1 %22, label %23, label %29
23: ; preds = %16
%24 = load i8**, i8*** %5
%25 = getelementptr inbounds i8*, i8** %24, i64 1
%26 = load i8*, i8** %25
%27 = call i32 @perror(i8* %26)
%28 = call i32 @exit(i32 1)
unreachable
29: ; preds = %16
%30 = load i32, i32* %6
%31 = load i8**, i8*** %5
%32 = getelementptr inbounds i8*, i8** %31, i64 2
%33 = load i8*, i8** %32
%34 = call i32 @atoi(i8* %33)
%35 = call i32 @partx_del_partition(i32 %30, i32 %34)
%36 = icmp eq i32 %35, -1
br i1 %36, label %37, label %40
37: ; preds = %29
%38 = call i32 @perror(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0))
%39 = call i32 @exit(i32 1)
unreachable
40: ; preds = %29
ret i32 0
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [34 x i8] c"usage: %s diskdevice partitionnr\0A\00"
@O_RDONLY = global i32 0
@.str.1 = [6 x i8] c"BLKPG\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
br i1 %3, label %9, 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 ([34 x i8], [34 x i8]* @.str, i64 0, i64 0), i8* %6)
%8 = tail call i32 @exit(i32 1)
unreachable
9: ; preds = %2
%10 = getelementptr inbounds i8*, i8** %1, i64 1
%11 = load i8*, i8** %10
%12 = load i32, i32* @O_RDONLY
%13 = tail call i32 @open(i8* %11, i32 %12)
%14 = icmp slt i32 %13, 0
br i1 %14, label %15, label %19
15: ; preds = %9
%16 = load i8*, i8** %10
%17 = tail call i32 @perror(i8* %16)
%18 = tail call i32 @exit(i32 1)
unreachable
19: ; preds = %9
%20 = getelementptr inbounds i8*, i8** %1, i64 2
%21 = load i8*, i8** %20
%22 = tail call i32 @atoi(i8* %21)
%23 = tail call i32 @partx_del_partition(i32 %13, i32 %22)
%24 = icmp eq i32 %23, -1
br i1 %24, label %25, label %28
25: ; preds = %19
%26 = tail call i32 @perror(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0))
%27 = tail call i32 @exit(i32 1)
unreachable
28: ; preds = %19
ret i32 0
}