#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 O_NOCTTY;
int O_RDWR;
int atoi(char const *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char const *);
int open(char const *, int);
int /*<<< orphan*/ perror(char *);
scalar_t__ set_baudrate(int, int);
int /*<<< orphan*/ stderr;
int main(int argc, const char **argv) {
  int fh, baudrate;
  if (argc != 3) {
    fprintf(stderr, "Usage: %s devicenode baudrate\n", argv[0]);
    return -1;
  }
  fh = open(argv[1], O_RDWR | O_NOCTTY);
  if (fh < 0) {
    perror("open");
    return -1;
  }
  baudrate = atoi(argv[2]);
  if (set_baudrate(fh, baudrate) < 0) {
    return -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     1198 <main+0x48>
mov    0x2e59(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe79(%rip),%rsi
call   1030 <fprintf@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    1214 <main+0xc4>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    0x2e41(%rip),%rax
mov    (%rax),%esi
mov    0x2e28(%rip),%rax
or     (%rax),%esi
call   1040 <open@plt>
mov    %eax,-0x14(%rbp)
cmpl   $0x0,-0x14(%rbp)
jge    11dc <main+0x8c>
lea    0xe54(%rip),%rdi
call   1050 <perror@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    1214 <main+0xc4>
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   1060 <atoi@plt>
mov    %eax,-0x18(%rbp)
mov    -0x14(%rbp),%edi
mov    -0x18(%rbp),%esi
call   1070 <set_baudrate@plt>
cmp    $0x0,%rax
jge    120d <main+0xbd>
movl   $0xffffffff,-0x4(%rbp)
jmp    1214 <main+0xc4>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%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    1194 <main+0x44>
mov    0x8(%rbx),%rdi
mov    0x2e82(%rip),%rax
mov    0x2e6b(%rip),%rcx
mov    (%rcx),%esi
or     (%rax),%esi
call   1040 <open@plt>
test   %eax,%eax
js     11b8 <main+0x68>
mov    %eax,%ebp
mov    0x10(%rbx),%rdi
call   1060 <atoi@plt>
mov    %ebp,%edi
mov    %eax,%esi
call   1070 <set_baudrate@plt>
sar    $0x3f,%rax
jmp    11b1 <main+0x61>
mov    0x2e35(%rip),%rax
mov    (%rax),%edi
mov    (%rbx),%rdx
lea    0xe59(%rip),%rsi
call   1030 <fprintf@plt>
mov    $0xffffffff,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret
lea    0xe60(%rip),%rdi
call   1050 <perror@plt>
jmp    11ac <main+0x5c>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [31 x i8] c"Usage: %s devicenode baudrate\0A\00"
@O_RDWR = global i32 0
@O_NOCTTY = global i32 0
@.str.1 = [5 x i8] c"open\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = icmp ne i32 %8, 3
br i1 %9, label %10, label %16
10: ; preds = %2
%11 = load i32, i32* @stderr
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 0
%14 = load i8*, i8** %13
%15 = call i32 @fprintf(i32 %11, i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str, i64 0, i64 0), i8* %14)
store i32 -1, i32* %3
br label %39
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_RDWR
%21 = load i32, i32* @O_NOCTTY
%22 = or i32 %20, %21
%23 = call i32 @open(i8* %19, i32 %22)
store i32 %23, i32* %6
%24 = load i32, i32* %6
%25 = icmp slt i32 %24, 0
br i1 %25, label %26, label %28
26: ; preds = %16
%27 = call i32 @perror(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
store i32 -1, i32* %3
br label %39
28: ; preds = %16
%29 = load i8**, i8*** %5
%30 = getelementptr inbounds i8*, i8** %29, i64 2
%31 = load i8*, i8** %30
%32 = call i32 @atoi(i8* %31)
store i32 %32, i32* %7
%33 = load i32, i32* %6
%34 = load i32, i32* %7
%35 = call i64 @set_baudrate(i32 %33, i32 %34)
%36 = icmp slt i64 %35, 0
br i1 %36, label %37, label %38
37: ; preds = %28
store i32 -1, i32* %3
br label %39
38: ; preds = %28
store i32 0, i32* %3
br label %39
39: ; preds = %38, %37, %26, %10
%40 = load i32, i32* %3
ret i32 %40
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [31 x i8] c"Usage: %s devicenode baudrate\0A\00"
@O_RDWR = global i32 0
@O_NOCTTY = global i32 0
@.str.1 = [5 x i8] c"open\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
br i1 %3, label %8, 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 ([31 x i8], [31 x i8]* @.str, i64 0, i64 0), i8* %6)
br label %25
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = load i32, i32* @O_RDWR
%12 = load i32, i32* @O_NOCTTY
%13 = or i32 %12, %11
%14 = tail call i32 @open(i8* %10, i32 %13)
%15 = icmp slt i32 %14, 0
br i1 %15, label %16, label %18
16: ; preds = %8
%17 = tail call i32 @perror(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
br label %25
18: ; preds = %8
%19 = getelementptr inbounds i8*, i8** %1, i64 2
%20 = load i8*, i8** %19
%21 = tail call i32 @atoi(i8* %20)
%22 = tail call i64 @set_baudrate(i32 %14, i32 %21)
%23 = ashr i64 %22, 63
%24 = trunc i64 %23 to i32
br label %25
25: ; preds = %18, %16, %4
%26 = phi i32 [ -1, %4 ], [ -1, %16 ], [ %24, %18 ]
ret i32 %26
}