import torch
from torch._inductor.select_algorithm import extern_kernels
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
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


@triton.jit
def triton_poi_fused__to_copy__unsafe_index_add_arange_clamp_mul_sub_0(
    in_out_ptr0, in_ptr0, xnumel, XBLOCK: tl.constexpr):
    xnumel = 1024
    xoffset = tl.program_id(0) * XBLOCK
    xindex = xoffset + tl.arange(0, XBLOCK)[:]
    xmask = xindex < xnumel
    x1 = xindex // 8 % 8
    x0 = xindex % 8
    x2 = xindex // 64
    x4 = xindex
    tmp0 = x1
    tmp1 = tmp0.to(tl.float32)
    tmp2 = 0.5
    tmp3 = tmp1 + tmp2
    tmp4 = tmp3 * tmp2
    tmp5 = tmp4 - tmp2
    tmp6 = 0.0
    tmp7 = triton_helpers.maximum(tmp5, tmp6)
    tmp8 = tmp7.to(tl.int32)
    tmp9 = tl.full([1], 1, tl.int64)
    tmp10 = tmp8 + tmp9
    tmp11 = tl.full([1], 3, tl.int64)
    tmp12 = triton_helpers.minimum(tmp10, tmp11)
    tmp13 = x0
    tmp14 = tmp13.to(tl.float32)
    tmp15 = tmp14 + tmp2
    tmp16 = tmp15 * tmp2
    tmp17 = tmp16 - tmp2
    tmp18 = triton_helpers.maximum(tmp17, tmp6)
    tmp19 = tmp18.to(tl.int32)
    tmp20 = tmp19 + tmp9
    tmp21 = triton_helpers.minimum(tmp20, tmp11)
    tmp22 = tl.load(in_ptr0 + (tmp21 + 4 * tmp12 + 16 * x2), xmask,
        eviction_policy='evict_last')
    tmp23 = tl.load(in_ptr0 + (tmp19 + 4 * tmp12 + 16 * x2), xmask,
        eviction_policy='evict_last')
    tmp24 = tmp22 - tmp23
    tmp25 = tmp19.to(tl.float32)
    tmp26 = tmp18 - tmp25
    tmp27 = triton_helpers.maximum(tmp26, tmp6)
    tmp28 = 1.0
    tmp29 = triton_helpers.minimum(tmp27, tmp28)
    tmp30 = tmp24 * tmp29
    tmp31 = tmp23 + tmp30
    tmp32 = tl.load(in_ptr0 + (tmp19 + 4 * tmp8 + 16 * x2), xmask,
        eviction_policy='evict_last')
    tmp33 = tl.load(in_ptr0 + (tmp21 + 4 * tmp8 + 16 * x2), xmask,
        eviction_policy='evict_last')
    tmp34 = tmp33 - tmp32
    tmp35 = tmp34 * tmp29
    tmp36 = tmp32 + tmp35
    tmp37 = tmp31 - tmp36
    tmp38 = tmp8.to(tl.float32)
    tmp39 = tmp7 - tmp38
    tmp40 = triton_helpers.maximum(tmp39, tmp6)
    tmp41 = triton_helpers.minimum(tmp40, tmp28)
    tmp42 = tmp37 * tmp41
    tmp43 = tmp36 + tmp42
    tl.store(in_out_ptr0 + x4, tmp43, xmask)


def call(args):
    primals_1, primals_2 = args
    args.clear()
    assert_size_stride(primals_1, (4, 4, 4, 4), (64, 16, 4, 1))
    assert_size_stride(primals_2, (2, 4, 1, 1), (4, 1, 1, 1))
    with torch.cuda._DeviceGuard(0):
        torch.cuda.set_device(0)
        buf0 = empty_strided_cuda((4, 4, 8, 8), (256, 64, 8, 1), torch.float32)
        buf1 = buf0
        del buf0
        buf2 = buf1
        del buf1
        get_raw_stream(0)
        triton_poi_fused__to_copy__unsafe_index_add_arange_clamp_mul_sub_0[grid
            (1024)](buf2, primals_1, 1024, XBLOCK=256, num_warps=4,
            num_stages=1)
        del primals_1
        buf3 = extern_kernels.convolution(buf2, primals_2, stride=(1, 1),
            padding=(0, 0), dilation=(1, 1), transposed=False,
            output_padding=(0, 0), groups=1, bias=None)
        assert_size_stride(buf3, (4, 2, 8, 8), (128, 64, 8, 1))
    return buf3, primals_2, buf2


class UpSampleAndHalveChannelsNew(nn.Module):
    """
    Doubles the spatial dimensions (H,W) but halves the number of channels.
    Inverse of the DownSample function in blocks.py
    
    From Diakogiannis et al.
    doi: 10.1016/j.isprsjprs.2020.01.013
    """

    def __init__(self, _in_channels, _factor=2):
        super().__init__()
        self.in_channels = _in_channels
        self.factor = _factor
        self.upSample = nn.Upsample(scale_factor=self.factor, mode=
            'bilinear', align_corners=None)
        self.halveChannels = nn.Conv2d(in_channels=self.in_channels,
            out_channels=self.in_channels // self.factor, kernel_size=(1, 1
            ), stride=1, padding=0, dilation=1, bias=False)

    def forward(self, input_0):
        primals_2 = self.halveChannels.weight
        primals_1 = input_0
        output = call([primals_1, primals_2])
        return output[0]


Measured latency_ms: 0.023143