#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 */
struct timespec {
  unsigned int tv_sec;
  scalar_t__ tv_nsec;
};

/* Variables and functions */
scalar_t__ EINTR;
scalar_t__ errno;
int /*<<< orphan*/ nanosleep(struct timespec *, struct timespec *);
unsigned int sleep(unsigned int seconds) {
  struct timespec ts;
  ts.tv_sec = seconds;
  ts.tv_nsec = 0;
  if (!nanosleep(&ts, &ts))
    return 0;
  else if (errno == EINTR)
    return ts.tv_sec;
  else
    return -1;
}


x86 assembly (clang, -O0):
<sleep>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x8(%rbp)
mov    -0x8(%rbp),%eax
mov    %eax,-0x18(%rbp)
movq   $0x0,-0x10(%rbp)
lea    -0x18(%rbp),%rsi
mov    %rsi,%rdi
call   1030 <nanosleep@plt>
cmp    $0x0,%eax
jne    114a <sleep+0x3a>
movl   $0x0,-0x4(%rbp)
jmp    1176 <sleep+0x66>
mov    0x2e8f(%rip),%rax
mov    (%rax),%rax
mov    0x2e7d(%rip),%rcx
cmp    (%rcx),%rax
jne    116f <sleep+0x5f>
mov    -0x18(%rbp),%eax
mov    %eax,-0x4(%rbp)
jmp    1176 <sleep+0x66>
movl   $0xffffffff,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<sleep>:
sub    $0x18,%rsp
mov    %edi,0x8(%rsp)
movq   $0x0,0x10(%rsp)
lea    0x8(%rsp),%rdi
mov    %rdi,%rsi
call   1030 <nanosleep@plt>
test   %eax,%eax
je     1156 <sleep+0x46>
mov    0x2ea7(%rip),%rax
mov    (%rax),%rcx
mov    0x2e95(%rip),%rdx
mov    $0xffffffff,%eax
cmp    (%rdx),%rcx
jne    1151 <sleep+0x41>
mov    0x8(%rsp),%eax
add    $0x18,%rsp
ret
xor    %eax,%eax
add    $0x18,%rsp
ret

LLVM IR (-O0):
%struct.timespec = type { i32, i64 }
@errno = global i64 0
@EINTR = global i64 0
define i32 @sleep(i32 %0) {
%2 = alloca i32
%3 = alloca i32
%4 = alloca %struct.timespec
store i32 %0, i32* %3
%5 = load i32, i32* %3
%6 = getelementptr inbounds %struct.timespec, %struct.timespec* %4, i32 0, i32 0
store i32 %5, i32* %6
%7 = getelementptr inbounds %struct.timespec, %struct.timespec* %4, i32 0, i32 1
store i64 0, i64* %7
%8 = call i32 @nanosleep(%struct.timespec* %4, %struct.timespec* %4)
%9 = icmp ne i32 %8, 0
br i1 %9, label %11, label %10
10: ; preds = %1
store i32 0, i32* %2
br label %19
11: ; preds = %1
%12 = load i64, i64* @errno
%13 = load i64, i64* @EINTR
%14 = icmp eq i64 %12, %13
br i1 %14, label %15, label %18
15: ; preds = %11
%16 = getelementptr inbounds %struct.timespec, %struct.timespec* %4, i32 0, i32 0
%17 = load i32, i32* %16
store i32 %17, i32* %2
br label %19
18: ; preds = %11
store i32 -1, i32* %2
br label %19
19: ; preds = %18, %15, %10
%20 = load i32, i32* %2
ret i32 %20
}

LLVM IR (-O2):
%struct.timespec = type { i32, i64 }
@errno = global i64 0
@EINTR = global i64 0
define i32 @sleep(i32 %0) {
%2 = alloca %struct.timespec
%3 = bitcast %struct.timespec* %2 to i8*
%4 = getelementptr inbounds %struct.timespec, %struct.timespec* %2, i64 0, i32 0
store i32 %0, i32* %4
%5 = getelementptr inbounds %struct.timespec, %struct.timespec* %2, i64 0, i32 1
store i64 0, i64* %5
%6 = call i32 @nanosleep(%struct.timespec* %2, %struct.timespec* %2)
%7 = icmp eq i32 %6, 0
br i1 %7, label %14, label %8
8: ; preds = %1
%9 = load i64, i64* @errno
%10 = load i64, i64* @EINTR
%11 = icmp eq i64 %9, %10
%12 = load i32, i32* %4
%13 = select i1 %11, i32 %12, i32 -1
br label %14
14: ; preds = %8, %1
%15 = phi i32 [ 0, %1 ], [ %13, %8 ]
ret i32 %15
}