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_poi_fused__log_softmax_0(in_ptr0, out_ptr0, xnumel, XBLOCK: tl.
    constexpr):
    xnumel = 256
    xoffset = tl.program_id(0) * XBLOCK
    xindex = xoffset + tl.arange(0, XBLOCK)[:]
    xmask = xindex < xnumel
    x3 = xindex
    x0 = xindex % 16
    x2 = xindex // 64
    tmp0 = tl.load(in_ptr0 + x3, xmask)
    tmp1 = tl.load(in_ptr0 + (x0 + 64 * x2), xmask, eviction_policy=
        'evict_last')
    tmp2 = tl.load(in_ptr0 + (16 + x0 + 64 * x2), xmask, eviction_policy=
        'evict_last')
    tmp4 = tl.load(in_ptr0 + (32 + x0 + 64 * x2), xmask, eviction_policy=
        'evict_last')
    tmp6 = tl.load(in_ptr0 + (48 + x0 + 64 * x2), xmask, eviction_policy=
        'evict_last')
    tmp3 = triton_helpers.maximum(tmp1, tmp2)
    tmp5 = triton_helpers.maximum(tmp3, tmp4)
    tmp7 = triton_helpers.maximum(tmp5, tmp6)
    tmp8 = tmp0 - tmp7
    tl.store(out_ptr0 + x3, tmp8, xmask)


@triton.jit
def triton_poi_fused__log_softmax_mul_neg_sum_1(in_ptr0, in_ptr1, out_ptr0,
    xnumel, XBLOCK: tl.constexpr):
    xnumel = 64
    xoffset = tl.program_id(0) * XBLOCK
    xindex = xoffset + tl.arange(0, XBLOCK)[:]
    xmask = xindex < xnumel
    x0 = xindex % 16
    x1 = xindex // 16
    x2 = xindex
    tmp0 = tl.load(in_ptr0 + (x0 + 64 * x1), xmask)
    tmp2 = tl.load(in_ptr0 + (16 + x0 + 64 * x1), xmask)
    tmp5 = tl.load(in_ptr0 + (32 + x0 + 64 * x1), xmask)
    tmp8 = tl.load(in_ptr0 + (48 + x0 + 64 * x1), xmask)
    tmp13 = tl.load(in_ptr1 + (x0 + 64 * x1), xmask)
    tmp16 = tl.load(in_ptr1 + (16 + x0 + 64 * x1), xmask)
    tmp20 = tl.load(in_ptr1 + (32 + x0 + 64 * x1), xmask)
    tmp24 = tl.load(in_ptr1 + (48 + x0 + 64 * x1), xmask)
    tmp1 = tl_math.exp(tmp0)
    tmp3 = tl_math.exp(tmp2)
    tmp4 = tmp1 + tmp3
    tmp6 = tl_math.exp(tmp5)
    tmp7 = tmp4 + tmp6
    tmp9 = tl_math.exp(tmp8)
    tmp10 = tmp7 + tmp9
    tmp11 = tl_math.log(tmp10)
    tmp12 = tmp0 - tmp11
    tmp14 = tmp12 * tmp13
    tmp15 = tmp2 - tmp11
    tmp17 = tmp15 * tmp16
    tmp18 = tmp14 + tmp17
    tmp19 = tmp5 - tmp11
    tmp21 = tmp19 * tmp20
    tmp22 = tmp18 + tmp21
    tmp23 = tmp8 - tmp11
    tmp25 = tmp23 * tmp24
    tmp26 = tmp22 + tmp25
    tmp27 = -tmp26
    tl.store(out_ptr0 + x2, tmp27, xmask)


@triton.jit
def triton_per_fused__log_softmax_div_mul_neg_sum_2(in_out_ptr0, in_ptr0,
    in_ptr1, 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 % 64
    r2 = rindex
    tmp0 = tl.load(in_ptr0 + r0, None, eviction_policy='evict_last')
    tmp1 = tl.load(in_ptr1 + r2, None)
    tmp2 = tmp0 * tmp1
    tmp3 = tl.broadcast_to(tmp2, [RBLOCK])
    tmp5 = triton_helpers.promote_to_tensor(tl.sum(tmp3, 0))
    tmp6 = 0.00390625
    tmp7 = tmp5 * tmp6
    tl.debug_barrier()
    tl.store(in_out_ptr0 + tl.full([1], 0, tl.int32), tmp7, 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((4, 4, 4, 4), (64, 16, 4, 1), torch.float32)
        get_raw_stream(0)
        triton_poi_fused__log_softmax_0[grid(256)](arg1_1, buf0, 256,
            XBLOCK=256, num_warps=4, num_stages=1)
        del arg1_1
        buf1 = empty_strided_cuda((4, 4, 4), (16, 4, 1), torch.float32)
        triton_poi_fused__log_softmax_mul_neg_sum_1[grid(64)](buf0, arg0_1,
            buf1, 64, XBLOCK=64, num_warps=1, num_stages=1)
        del arg0_1
        del buf0
        buf2 = empty_strided_cuda((), (), torch.float32)
        buf3 = reinterpret_tensor(buf2, (1,), (1,), 0)
        del buf2
        triton_per_fused__log_softmax_div_mul_neg_sum_2[grid(1)](buf3, buf1,
            arg2_1, 1, 256, num_warps=2, num_stages=1)
        del arg2_1
        del buf1
    return buf3,


def mask_cross_entropy(pred, target, label):
    num_rois = pred.size()[0]
    inds = torch.arange(0, num_rois, dtype=torch.long, device=pred.device)
    pred_slice = pred[inds, label].squeeze(1)
    return F.binary_cross_entropy_with_logits(pred_slice, target, reduction
        ='mean')[None]


def _expand_binary_labels(labels, label_weights, label_channels):
    bin_labels = labels.new_full((labels.size(0), label_channels), 0)
    inds = torch.nonzero(labels >= 1).squeeze()
    if inds.numel() > 0:
        bin_labels[inds, labels[inds] - 1] = 1
    bin_label_weights = label_weights.view(-1, 1).expand(label_weights.size
        (0), label_channels)
    return bin_labels, bin_label_weights


def weighted_binary_cross_entropy(pred, label, weight, avg_factor=None):
    if pred.dim() != label.dim():
        label, weight = _expand_binary_labels(label, weight, pred.size(-1))
    if avg_factor is None:
        avg_factor = max(torch.sum(weight > 0).float().item(), 1.0)
    return F.binary_cross_entropy_with_logits(pred, label.float(), weight.
        float(), reduction='sum')[None] / avg_factor


def weighted_cross_entropy(pred, label, weight, avg_factor=None, reduce=True):
    if avg_factor is None:
        avg_factor = max(torch.sum(weight > 0).float().item(), 1.0)
    raw = F.cross_entropy(pred, label, reduction='none')
    if reduce:
        return torch.sum(raw * weight)[None] / avg_factor
    else:
        return raw * weight / avg_factor


class CrossEntropyLossNew(nn.Module):

    def __init__(self, use_sigmoid=False, use_mask=False, loss_weight=1.0):
        super(CrossEntropyLossNew, self).__init__()
        assert use_sigmoid is False or use_mask is False
        self.use_sigmoid = use_sigmoid
        self.use_mask = use_mask
        self.loss_weight = loss_weight
        if self.use_sigmoid:
            self.cls_criterion = weighted_binary_cross_entropy
        elif self.use_mask:
            self.cls_criterion = mask_cross_entropy
        else:
            self.cls_criterion = weighted_cross_entropy

    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: 0.016493