import torch
import torch.nn.functional as F
from torch.nn.modules.loss import _Loss
from torch.optim.lr_scheduler import *


class Criterion(_Loss):

    def __init__(self, alpha=1.0, name='criterion'):
        super().__init__()
        """Alpha is used to weight each loss term
        """
        self.alpha = alpha
        self.name = name

    def forward(self, input, target, weight=None, ignore_index=-1):
        """weight: sample weight
        """
        return


class KlCriterion(Criterion):

    def __init__(self, alpha=1.0, name='KL Div Criterion'):
        super().__init__()
        self.alpha = alpha
        self.name = name

    def forward(self, input, target, weight=None, ignore_index=-1):
        """input/target: logits
        """
        input = input.float()
        target = target.float()
        loss = F.kl_div(F.log_softmax(input, dim=-1, dtype=torch.float32),
            F.softmax(target, dim=-1, dtype=torch.float32), reduction=
            'batchmean')
        loss = loss * self.alpha
        return loss


def get_inputs():
    return [torch.rand([4, 4, 4, 4]), torch.rand([4, 4, 4, 4])]


def get_init_inputs():
    return [[], {}]

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 libdevice, math as tl_math
from torch.nn.modules.loss import _Loss
from torch.optim.lr_scheduler import *
assert_size_stride = torch._C._dynamo.guards.assert_size_stride
empty_strided_cuda = torch._C._dynamo.guards._empty_strided_cuda


@triton.jit
def triton_poi_fused__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
    x2 = xindex
    x1 = xindex // 4
    tmp0 = tl.load(in_ptr0 + x2, xmask)
    tmp1 = tl.load(in_ptr0 + 4 * x1, xmask, eviction_policy='evict_last')
    tmp2 = tl.load(in_ptr0 + (1 + 4 * x1), xmask, eviction_policy='evict_last')
    tmp4 = tl.load(in_ptr0 + (2 + 4 * x1), xmask, eviction_policy='evict_last')
    tmp6 = tl.load(in_ptr0 + (3 + 4 * x1), 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
    tmp9 = tl_math.exp(tmp8)
    tl.store(out_ptr0 + x2, tmp9, xmask)


@triton.jit
def triton_poi_fused__log_softmax_1(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
    x2 = xindex
    x1 = xindex // 4
    tmp0 = tl.load(in_ptr0 + x2, xmask)
    tmp1 = tl.load(in_ptr0 + 4 * x1, xmask, eviction_policy='evict_last')
    tmp2 = tl.load(in_ptr0 + (1 + 4 * x1), xmask, eviction_policy='evict_last')
    tmp4 = tl.load(in_ptr0 + (2 + 4 * x1), xmask, eviction_policy='evict_last')
    tmp6 = tl.load(in_ptr0 + (3 + 4 * x1), 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 + x2, tmp8, xmask)


@triton.jit
def triton_red_fused__log_softmax__softmax_div_mul_sub_sum_xlogy_2(in_out_ptr0,
    in_ptr0, in_ptr1, xnumel, rnumel, XBLOCK: tl.constexpr, RBLOCK: tl.
    constexpr):
    rnumel = 256
    xoffset = tl.program_id(0) * XBLOCK
    xoffset + tl.arange(0, XBLOCK)[:, None]
    tl.full([XBLOCK, RBLOCK], True, tl.int1)
    rbase = tl.arange(0, RBLOCK)[None, :]
    _tmp34 = tl.full([XBLOCK, RBLOCK], 0, tl.float32)
    for roffset in range(0, rnumel, RBLOCK):
        rindex = roffset + rbase
        rmask = rindex < rnumel
        r2 = rindex
        r1 = rindex // 4
        tmp0 = tl.load(in_ptr0 + r2, rmask, eviction_policy='evict_first',
            other=0.0)
        tmp1 = tl.load(in_ptr0 + 4 * r1, rmask, eviction_policy=
            'evict_last', other=0.0)
        tmp2 = tl.load(in_ptr0 + (1 + 4 * r1), rmask, eviction_policy=
            'evict_last', other=0.0)
        tmp4 = tl.load(in_ptr0 + (2 + 4 * r1), rmask, eviction_policy=
            'evict_last', other=0.0)
        tmp6 = tl.load(in_ptr0 + (3 + 4 * r1), rmask, eviction_policy=
            'evict_last', other=0.0)
        tmp17 = tl.load(in_ptr1 + r2, rmask, eviction_policy='evict_first',
            other=0.0)
        tmp18 = tl.load(in_ptr1 + 4 * r1, rmask, eviction_policy=
            'evict_last', other=0.0)
        tmp20 = tl.load(in_ptr1 + (1 + 4 * r1), rmask, eviction_policy=
            'evict_last', other=0.0)
        tmp23 = tl.load(in_ptr1 + (2 + 4 * r1), rmask, eviction_policy=
            'evict_last', other=0.0)
        tmp26 = tl.load(in_ptr1 + (3 + 4 * r1), rmask, eviction_policy=
            'evict_last', other=0.0)
        tmp3 = tmp1 + tmp2
        tmp5 = tmp3 + tmp4
        tmp7 = tmp5 + tmp6
        tmp8 = tmp0 / tmp7
        tmp9 = libdevice.isnan(tmp8).to(tl.int1)
        tmp10 = 0.0
        tmp11 = tmp8 == tmp10
        tmp12 = tl_math.log(tmp8)
        tmp13 = tmp8 * tmp12
        tmp14 = tl.where(tmp11, tmp10, tmp13)
        tmp15 = float('nan')
        tmp16 = tl.where(tmp9, tmp15, tmp14)
        tmp19 = tl_math.exp(tmp18)
        tmp21 = tl_math.exp(tmp20)
        tmp22 = tmp19 + tmp21
        tmp24 = tl_math.exp(tmp23)
        tmp25 = tmp22 + tmp24
        tmp27 = tl_math.exp(tmp26)
        tmp28 = tmp25 + tmp27
        tmp29 = tl_math.log(tmp28)
        tmp30 = tmp17 - tmp29
        tmp31 = tmp8 * tmp30
        tmp32 = tmp16 - tmp31
        tmp33 = tl.broadcast_to(tmp32, [XBLOCK, RBLOCK])
        tmp35 = _tmp34 + tmp33
        _tmp34 = tl.where(rmask, tmp35, _tmp34)
    tmp34 = tl.sum(_tmp34, 1)[:, None]
    tmp36 = 0.25
    tmp37 = tmp34 * tmp36
    tmp38 = 1.0
    tmp39 = tmp37 * tmp38
    tl.debug_barrier()
    tl.store(in_out_ptr0 + tl.full([XBLOCK, 1], 0, tl.int32), tmp39, None)


def call(args):
    arg0_1, arg1_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))
    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__softmax_0[grid(256)](arg1_1, buf0, 256, XBLOCK=
            128, num_warps=4, num_stages=1)
        del arg1_1
        buf2 = empty_strided_cuda((4, 4, 4, 4), (64, 16, 4, 1), torch.float32)
        triton_poi_fused__log_softmax_1[grid(256)](arg0_1, buf2, 256,
            XBLOCK=256, num_warps=4, num_stages=1)
        del arg0_1
        buf3 = empty_strided_cuda((), (), torch.float32)
        buf4 = buf3
        del buf3
        triton_red_fused__log_softmax__softmax_div_mul_sub_sum_xlogy_2[grid(1)
            ](buf4, buf0, buf2, 1, 256, XBLOCK=1, RBLOCK=256, num_warps=8,
            num_stages=1)
        del buf0
        del buf2
    return buf4,


class Criterion(_Loss):

    def __init__(self, alpha=1.0, name='criterion'):
        super().__init__()
        """Alpha is used to weight each loss term
        """
        self.alpha = alpha
        self.name = name

    def forward(self, input, target, weight=None, ignore_index=-1):
        """weight: sample weight
        """
        return


class KlCriterionNew(Criterion):

    def __init__(self, alpha=1.0, name='KL Div Criterion'):
        super().__init__()
        self.alpha = alpha
        self.name = name

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