#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_RDWR;
int /*<<< orphan*/ _IO(int, int);
int /*<<< orphan*/ close(int);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ ioctl(int, int /*<<< orphan*/, int /*<<< orphan*/);
int open(char *, int /*<<< orphan*/);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ printf(char *, char *);
int main(int argc, char **argv) {
  int fd;
  if (argc < 2) {
    printf("Usage: %s <device>\n", argv[0]);
    exit(1);
  }
  fd = open(argv[1], O_RDWR);
  if (fd <= 0) {
    perror("Error opening device: ");
    exit(1);
  }
  printf("Resetting device %s\n", argv[1]);
  ioctl(fd, _IO(0x12, 95), 0);
  close(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)
jge    11ad <main+0x3d>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xe62(%rip),%rdi
call   1030 <printf@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    0x2e2c(%rip),%rax
mov    (%rax),%esi
call   1070 <open@plt>
mov    %eax,-0x14(%rbp)
cmpl   $0x0,-0x14(%rbp)
jg     11e6 <main+0x76>
lea    0xe3d(%rip),%rdi
call   1080 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rsi
lea    0xe36(%rip),%rdi
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
mov    %eax,-0x18(%rbp)
mov    $0x12,%edi
mov    $0x5f,%esi
call   1040 <_IO@plt>
mov    -0x18(%rbp),%edi
mov    %eax,%esi
xor    %edx,%edx
call   1050 <ioctl@plt>
mov    -0x14(%rbp),%edi
call   1060 <close@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
mov    %rsi,%r14
cmp    $0x1,%edi
jle    11cf <main+0x5f>
mov    0x8(%r14),%rdi
mov    0x2e61(%rip),%rax
mov    (%rax),%esi
call   1070 <open@plt>
test   %eax,%eax
jle    11e8 <main+0x78>
mov    %eax,%ebx
mov    0x8(%r14),%rsi
lea    0xe8c(%rip),%rdi
call   1030 <printf@plt>
mov    $0x12,%edi
mov    $0x5f,%esi
call   1040 <_IO@plt>
mov    %ebx,%edi
mov    %eax,%esi
xor    %edx,%edx
call   1050 <ioctl@plt>
mov    %ebx,%edi
call   1060 <close@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret
mov    (%r14),%rsi
lea    0xe27(%rip),%rdi
call   1030 <printf@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
lea    0xe25(%rip),%rdi
call   1080 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>

LLVM IR (-O0):
@.str = [20 x i8] c"Usage: %s <device>\0A\00"
@O_RDWR = global i32 0
@.str.1 = [23 x i8] c"Error opening device: \00"
@.str.2 = [21 x i8] c"Resetting device %s\0A\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 slt i32 %7, 2
br i1 %8, label %9, label %15
9: ; preds = %2
%10 = load i8**, i8*** %5
%11 = getelementptr inbounds i8*, i8** %10, i64 0
%12 = load i8*, i8** %11
%13 = call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i64 0, i64 0), i8* %12)
%14 = call i32 @exit(i32 1)
unreachable
15: ; preds = %2
%16 = load i8**, i8*** %5
%17 = getelementptr inbounds i8*, i8** %16, i64 1
%18 = load i8*, i8** %17
%19 = load i32, i32* @O_RDWR
%20 = call i32 @open(i8* %18, i32 %19)
store i32 %20, i32* %6
%21 = load i32, i32* %6
%22 = icmp sle i32 %21, 0
br i1 %22, label %23, label %26
23: ; preds = %15
%24 = call i32 @perror(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0))
%25 = call i32 @exit(i32 1)
unreachable
26: ; preds = %15
%27 = load i8**, i8*** %5
%28 = getelementptr inbounds i8*, i8** %27, i64 1
%29 = load i8*, i8** %28
%30 = call i32 @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0), i8* %29)
%31 = load i32, i32* %6
%32 = call i32 @_IO(i32 18, i32 95)
%33 = call i32 @ioctl(i32 %31, i32 %32, i32 0)
%34 = load i32, i32* %6
%35 = call i32 @close(i32 %34)
ret i32 0
}

LLVM IR (-O2):
@.str = [20 x i8] c"Usage: %s <device>\0A\00"
@O_RDWR = global i32 0
@.str.1 = [23 x i8] c"Error opening device: \00"
@.str.2 = [21 x i8] c"Resetting device %s\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp slt i32 %0, 2
br i1 %3, label %4, label %8
4: ; preds = %2
%5 = load i8*, i8** %1
%6 = tail call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i64 0, i64 0), i8* %5)
%7 = tail call i32 @exit(i32 1)
unreachable
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = load i32, i32* @O_RDWR
%12 = tail call i32 @open(i8* %10, i32 %11)
%13 = icmp slt i32 %12, 1
br i1 %13, label %14, label %17
14: ; preds = %8
%15 = tail call i32 @perror(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0))
%16 = tail call i32 @exit(i32 1)
unreachable
17: ; preds = %8
%18 = load i8*, i8** %9
%19 = tail call i32 @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0), i8* %18)
%20 = tail call i32 @_IO(i32 18, i32 95)
%21 = tail call i32 @ioctl(i32 %12, i32 %20, i32 0)
%22 = tail call i32 @close(i32 %12)
ret i32 0
}