#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*/ F_GETFL;
int /*<<< orphan*/ F_SETFL;
int O_NONBLOCK;
scalar_t__ fcntl(int, int /*<<< orphan*/, ...);
int setnonblocking(int sock) {
  int opts;
  opts = fcntl(sock, F_GETFL);
  if (opts < 0)
    return (2);
  opts = (opts | O_NONBLOCK);
  if (fcntl(sock, F_SETFL, opts) < 0)
    return (2);
  return (0);
}


x86 assembly (clang, -O0):
<setnonblocking>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x8(%rbp)
mov    -0x8(%rbp),%edi
mov    0x2eab(%rip),%rax
mov    (%rax),%esi
mov    $0x0,%al
call   1030 <fcntl@plt>
mov    %eax,-0xc(%rbp)
cmpl   $0x0,-0xc(%rbp)
jge    1147 <setnonblocking+0x37>
movl   $0x2,-0x4(%rbp)
jmp    1189 <setnonblocking+0x79>
mov    -0xc(%rbp),%eax
mov    0x2e97(%rip),%rcx
or     (%rcx),%eax
mov    %eax,-0xc(%rbp)
mov    -0x8(%rbp),%edi
mov    0x2e78(%rip),%rax
mov    (%rax),%esi
mov    -0xc(%rbp),%edx
mov    $0x0,%al
call   1030 <fcntl@plt>
cmp    $0x0,%rax
jge    1182 <setnonblocking+0x72>
movl   $0x2,-0x4(%rbp)
jmp    1189 <setnonblocking+0x79>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<setnonblocking>:
push   %rbx
mov    %edi,%ebx
mov    0x2eb6(%rip),%rax
mov    (%rax),%esi
xor    %eax,%eax
call   1030 <fcntl@plt>
test   %eax,%eax
js     114d <setnonblocking+0x3d>
mov    0x2eba(%rip),%rcx
or     (%rcx),%eax
mov    0x2ea1(%rip),%rcx
mov    (%rcx),%esi
mov    %ebx,%edi
mov    %eax,%edx
xor    %eax,%eax
call   1030 <fcntl@plt>
shr    $0x3e,%rax
and    $0xfffffffe,%eax
pop    %rbx
ret
mov    $0x2,%eax
pop    %rbx
ret

LLVM IR (-O0):
@F_GETFL = global i32 0
@O_NONBLOCK = global i32 0
@F_SETFL = global i32 0
define i32 @setnonblocking(i32 %0) {
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
store i32 %0, i32* %3
%5 = load i32, i32* %3
%6 = load i32, i32* @F_GETFL
%7 = call i64 (i32, i32, ...) @fcntl(i32 %5, i32 %6)
%8 = trunc i64 %7 to i32
store i32 %8, i32* %4
%9 = load i32, i32* %4
%10 = icmp slt i32 %9, 0
br i1 %10, label %11, label %12
11: ; preds = %1
store i32 2, i32* %2
br label %23
12: ; preds = %1
%13 = load i32, i32* %4
%14 = load i32, i32* @O_NONBLOCK
%15 = or i32 %13, %14
store i32 %15, i32* %4
%16 = load i32, i32* %3
%17 = load i32, i32* @F_SETFL
%18 = load i32, i32* %4
%19 = call i64 (i32, i32, ...) @fcntl(i32 %16, i32 %17, i32 %18)
%20 = icmp slt i64 %19, 0
br i1 %20, label %21, label %22
21: ; preds = %12
store i32 2, i32* %2
br label %23
22: ; preds = %12
store i32 0, i32* %2
br label %23
23: ; preds = %22, %21, %11
%24 = load i32, i32* %2
ret i32 %24
}

LLVM IR (-O2):
@F_GETFL = global i32 0
@O_NONBLOCK = global i32 0
@F_SETFL = global i32 0
define i32 @setnonblocking(i32 %0) {
%2 = load i32, i32* @F_GETFL
%3 = tail call i64 (i32, i32, ...) @fcntl(i32 %0, i32 %2)
%4 = trunc i64 %3 to i32
%5 = icmp slt i32 %4, 0
br i1 %5, label %14, label %6
6: ; preds = %1
%7 = load i32, i32* @O_NONBLOCK
%8 = or i32 %7, %4
%9 = load i32, i32* @F_SETFL
%10 = tail call i64 (i32, i32, ...) @fcntl(i32 %0, i32 %9, i32 %8)
%11 = lshr i64 %10, 62
%12 = trunc i64 %11 to i32
%13 = and i32 %12, 2
br label %14
14: ; preds = %6, %1
%15 = phi i32 [ 2, %1 ], [ %13, %6 ]
ret i32 %15
}