#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;
int /*<<< orphan*/ exit(int);
int fcntl(int, int /*<<< orphan*/, ...);
int /*<<< orphan*/ perror(char *);
void spc_make_fd_nonblocking(int fd) {
  int flags;
  flags = fcntl(fd, F_GETFL);
  if (flags == -1) {
    perror("spc_make_fd_nonblocking failed on F_GETFL");
    exit(-1);
  }
  flags |= O_NONBLOCK;
  if (fcntl(fd, F_SETFL, flags) == -1) {
    perror("spc_make_fd_nonblocking failed on F_SETFL");
    exit(-1);
  }
}


x86 assembly (clang, -O0):
<spc_make_fd_nonblocking>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
mov    -0x4(%rbp),%edi
mov    0x2e8b(%rip),%rax
mov    (%rax),%esi
mov    $0x0,%al
call   1030 <fcntl@plt>
mov    %eax,-0x8(%rbp)
cmpl   $0xffffffff,-0x8(%rbp)
jne    1171 <spc_make_fd_nonblocking+0x41>
lea    0xe9e(%rip),%rdi
call   1040 <perror@plt>
mov    $0xffffffff,%edi
call   1050 <exit@plt>
mov    0x2e70(%rip),%rax
mov    (%rax),%eax
or     -0x8(%rbp),%eax
mov    %eax,-0x8(%rbp)
mov    -0x4(%rbp),%edi
mov    0x2e4e(%rip),%rax
mov    (%rax),%esi
mov    -0x8(%rbp),%edx
mov    $0x0,%al
call   1030 <fcntl@plt>
cmp    $0xffffffff,%eax
jne    11b5 <spc_make_fd_nonblocking+0x85>
lea    0xe84(%rip),%rdi
call   1040 <perror@plt>
mov    $0xffffffff,%edi
call   1050 <exit@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<spc_make_fd_nonblocking>:
push   %rbx
mov    %edi,%ebx
mov    0x2e96(%rip),%rax
mov    (%rax),%esi
xor    %eax,%eax
call   1030 <fcntl@plt>
cmp    $0xffffffff,%eax
je     116c <spc_make_fd_nonblocking+0x3c>
mov    0x2e99(%rip),%rcx
or     (%rcx),%eax
mov    0x2e80(%rip),%rcx
mov    (%rcx),%esi
mov    %ebx,%edi
mov    %eax,%edx
xor    %eax,%eax
call   1030 <fcntl@plt>
cmp    $0xffffffff,%eax
je     1175 <spc_make_fd_nonblocking+0x45>
pop    %rbx
ret
lea    0xe8d(%rip),%rdi
jmp    117c <spc_make_fd_nonblocking+0x4c>
lea    0xeae(%rip),%rdi
call   1040 <perror@plt>
mov    $0xffffffff,%edi
call   1050 <exit@plt>

LLVM IR (-O0):
@F_GETFL = global i32 0
@.str = [42 x i8] c"spc_make_fd_nonblocking failed on F_GETFL\00"
@O_NONBLOCK = global i32 0
@F_SETFL = global i32 0
@.str.1 = [42 x i8] c"spc_make_fd_nonblocking failed on F_SETFL\00"
define void @spc_make_fd_nonblocking(i32 %0) {
%2 = alloca i32
%3 = alloca i32
store i32 %0, i32* %2
%4 = load i32, i32* %2
%5 = load i32, i32* @F_GETFL
%6 = call i32 (i32, i32, ...) @fcntl(i32 %4, i32 %5)
store i32 %6, i32* %3
%7 = load i32, i32* %3
%8 = icmp eq i32 %7, -1
br i1 %8, label %9, label %12
9: ; preds = %1
%10 = call i32 @perror(i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str, i64 0, i64 0))
%11 = call i32 @exit(i32 -1)
unreachable
12: ; preds = %1
%13 = load i32, i32* @O_NONBLOCK
%14 = load i32, i32* %3
%15 = or i32 %14, %13
store i32 %15, i32* %3
%16 = load i32, i32* %2
%17 = load i32, i32* @F_SETFL
%18 = load i32, i32* %3
%19 = call i32 (i32, i32, ...) @fcntl(i32 %16, i32 %17, i32 %18)
%20 = icmp eq i32 %19, -1
br i1 %20, label %21, label %24
21: ; preds = %12
%22 = call i32 @perror(i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str.1, i64 0, i64 0))
%23 = call i32 @exit(i32 -1)
unreachable
24: ; preds = %12
ret void
}

LLVM IR (-O2):
@F_GETFL = global i32 0
@.str = [42 x i8] c"spc_make_fd_nonblocking failed on F_GETFL\00"
@O_NONBLOCK = global i32 0
@F_SETFL = global i32 0
@.str.1 = [42 x i8] c"spc_make_fd_nonblocking failed on F_SETFL\00"
define void @spc_make_fd_nonblocking(i32 %0) {
%2 = load i32, i32* @F_GETFL
%3 = tail call i32 (i32, i32, ...) @fcntl(i32 %0, i32 %2)
%4 = icmp eq i32 %3, -1
br i1 %4, label %5, label %8
5: ; preds = %1
%6 = tail call i32 @perror(i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str, i64 0, i64 0))
%7 = tail call i32 @exit(i32 -1)
unreachable
8: ; preds = %1
%9 = load i32, i32* @O_NONBLOCK
%10 = or i32 %9, %3
%11 = load i32, i32* @F_SETFL
%12 = tail call i32 (i32, i32, ...) @fcntl(i32 %0, i32 %11, i32 %10)
%13 = icmp eq i32 %12, -1
br i1 %13, label %14, label %17
14: ; preds = %8
%15 = tail call i32 @perror(i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str.1, i64 0, i64 0))
%16 = tail call i32 @exit(i32 -1)
unreachable
17: ; preds = %8
ret void
}