#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 fcntl(int, int /*<<< orphan*/, int);
int ss_set_fd_blocking(int fd) {
  int flags = fcntl(fd, F_GETFL, 0);
  if (flags == -1)
    return 0;
  return fcntl(fd, F_SETFL, (flags & ~O_NONBLOCK)) != -1;
}


x86 assembly (clang, -O0):
<ss_set_fd_blocking>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x8(%rbp)
mov    -0x8(%rbp),%edi
mov    0x2eab(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   1030 <fcntl@plt>
mov    %eax,-0xc(%rbp)
cmpl   $0xffffffff,-0xc(%rbp)
jne    1147 <ss_set_fd_blocking+0x37>
movl   $0x0,-0x4(%rbp)
jmp    1177 <ss_set_fd_blocking+0x67>
mov    -0x8(%rbp),%edi
mov    0x2e87(%rip),%rax
mov    (%rax),%esi
mov    -0xc(%rbp),%edx
mov    0x2e8b(%rip),%rax
mov    (%rax),%eax
xor    $0xffffffff,%eax
and    %eax,%edx
call   1030 <fcntl@plt>
cmp    $0xffffffff,%eax
setne  %al
and    $0x1,%al
movzbl %al,%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<ss_set_fd_blocking>:
push   %rbp
push   %rbx
push   %rax
mov    %edi,%ebx
mov    0x2eb4(%rip),%rax
mov    (%rax),%esi
xor    %ebp,%ebp
xor    %edx,%edx
call   1030 <fcntl@plt>
cmp    $0xffffffff,%eax
je     1154 <ss_set_fd_blocking+0x44>
mov    0x2ea5(%rip),%rcx
mov    (%rcx),%esi
mov    0x2eac(%rip),%rcx
mov    (%rcx),%ecx
not    %ecx
and    %ecx,%eax
mov    %ebx,%edi
mov    %eax,%edx
call   1030 <fcntl@plt>
xor    %ebp,%ebp
cmp    $0xffffffff,%eax
setne  %bpl
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@F_GETFL = global i32 0
@F_SETFL = global i32 0
@O_NONBLOCK = global i32 0
define i32 @ss_set_fd_blocking(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 i32 @fcntl(i32 %5, i32 %6, i32 0)
store i32 %7, i32* %4
%8 = load i32, i32* %4
%9 = icmp eq i32 %8, -1
br i1 %9, label %10, label %11
10: ; preds = %1
store i32 0, i32* %2
br label %21
11: ; preds = %1
%12 = load i32, i32* %3
%13 = load i32, i32* @F_SETFL
%14 = load i32, i32* %4
%15 = load i32, i32* @O_NONBLOCK
%16 = xor i32 %15, -1
%17 = and i32 %14, %16
%18 = call i32 @fcntl(i32 %12, i32 %13, i32 %17)
%19 = icmp ne i32 %18, -1
%20 = zext i1 %19 to i32
store i32 %20, i32* %2
br label %21
21: ; preds = %11, %10
%22 = load i32, i32* %2
ret i32 %22
}

LLVM IR (-O2):
@F_GETFL = global i32 0
@F_SETFL = global i32 0
@O_NONBLOCK = global i32 0
define i32 @ss_set_fd_blocking(i32 %0) {
%2 = load i32, i32* @F_GETFL
%3 = tail call i32 @fcntl(i32 %0, i32 %2, i32 0)
%4 = icmp eq i32 %3, -1
br i1 %4, label %13, label %5
5: ; preds = %1
%6 = load i32, i32* @F_SETFL
%7 = load i32, i32* @O_NONBLOCK
%8 = xor i32 %7, -1
%9 = and i32 %3, %8
%10 = tail call i32 @fcntl(i32 %0, i32 %6, i32 %9)
%11 = icmp ne i32 %10, -1
%12 = zext i1 %11 to i32
br label %13
13: ; preds = %1, %5
%14 = phi i32 [ %12, %5 ], [ 0, %1 ]
ret i32 %14
}