import torch
import triton
import triton.language as tl
from torch._inductor.runtime.triton_heuristics import grid
from torch._C import _cuda_getCurrentRawStream as get_raw_stream
from torch._inductor.runtime import triton_helpers
from torch._inductor.runtime.triton_helpers import math as tl_math
import torch.nn.functional as F
import torch.nn as nn
assert_size_stride = torch._C._dynamo.guards.assert_size_stride
empty_strided_cuda = torch._C._dynamo.guards._empty_strided_cuda
reinterpret_tensor = torch._C._dynamo.guards._reinterpret_tensor


@triton.jit
def triton_per_fused_abs_div_lt_mul_sub_sum_where_0(in_out_ptr0, in_ptr0,
    in_ptr1, in_ptr2, xnumel, rnumel):
    XBLOCK: tl.constexpr = 1
    RBLOCK: tl.constexpr = 256
    xoffset = tl.program_id(0) * XBLOCK
    tl.full([1], xoffset, tl.int32)
    tl.full([RBLOCK], True, tl.int1)
    rindex = tl.arange(0, RBLOCK)[:]
    tl.full([RBLOCK], True, tl.int1)
    r0 = rindex
    tmp0 = tl.load(in_ptr0 + r0, None)
    tmp1 = tl.load(in_ptr1 + r0, None)
    tmp12 = tl.load(in_ptr2 + r0, None)
    tmp2 = tmp0 - tmp1
    tmp3 = tl_math.abs(tmp2)
    tmp4 = 1.0
    tmp5 = tmp3 < tmp4
    tmp6 = 0.5
    tmp7 = tmp3 * tmp6
    tmp8 = tmp7 * tmp3
    tmp9 = tmp8 * tmp4
    tmp10 = tmp3 - tmp6
    tmp11 = tl.where(tmp5, tmp9, tmp10)
    tmp13 = tmp11 * tmp12
    tmp14 = tl.broadcast_to(tmp13, [RBLOCK])
    tmp16 = triton_helpers.promote_to_tensor(tl.sum(tmp14, 0))
    tmp17 = 0.015624999755859379
    tmp18 = tmp16 * tmp17
    tl.debug_barrier()
    tl.store(in_out_ptr0 + tl.full([1], 0, tl.int32), tmp18, None)


def call(args):
    arg0_1, arg1_1, arg2_1 = args
    args.clear()
    assert_size_stride(arg0_1, (4, 4, 4, 4), (64, 16, 4, 1))
    assert_size_stride(arg1_1, (4, 4, 4, 4), (64, 16, 4, 1))
    assert_size_stride(arg2_1, (4, 4, 4, 4), (64, 16, 4, 1))
    with torch.cuda._DeviceGuard(0):
        torch.cuda.set_device(0)
        buf0 = empty_strided_cuda((), (), torch.float32)
        buf1 = reinterpret_tensor(buf0, (1,), (1,), 0)
        del buf0
        get_raw_stream(0)
        triton_per_fused_abs_div_lt_mul_sub_sum_where_0[grid(1)](buf1,
            arg0_1, arg1_1, arg2_1, 1, 256, num_warps=2, num_stages=1)
        del arg0_1
        del arg1_1
        del arg2_1
    return buf1,


def smooth_l1_loss(pred, target, beta=1.0, reduction='mean'):
    assert beta > 0
    assert pred.size() == target.size() and target.numel() > 0
    diff = torch.abs(pred - target)
    loss = torch.where(diff < beta, 0.5 * diff * diff / beta, diff - 0.5 * beta
        )
    reduction_enum = F._Reduction.get_enum(reduction)
    if reduction_enum == 0:
        return loss
    elif reduction_enum == 1:
        return loss.sum() / pred.numel()
    elif reduction_enum == 2:
        return loss.sum()


def weighted_smoothl1(pred, target, weight, beta=1.0, avg_factor=None):
    if avg_factor is None:
        avg_factor = torch.sum(weight > 0).float().item() / 4 + 1e-06
    loss = smooth_l1_loss(pred, target, beta, reduction='none')
    return torch.sum(loss * weight)[None] / avg_factor


class SmoothL1LossNew(nn.Module):

    def __init__(self, beta=1.0, loss_weight=1.0):
        super(SmoothL1LossNew, self).__init__()
        self.beta = beta
        self.loss_weight = loss_weight

    def forward(self, input_0, input_1, input_2):
        arg0_1 = input_0
        arg1_1 = input_1
        arg2_1 = input_2
        output = call([arg0_1, arg1_1, arg2_1])
        return output[0]


Measured latency_ms: 0.016687