#include "kernel_SimpleRadialPose_pred_decrease_times_two.h"
#include "memops.cuh"
#include <cooperative_groups.h>
#include <cooperative_groups/details/partitioning.h>
#include <cooperative_groups/memcpy_async.h>
#include <cooperative_groups/reduce.h>
#include <cuda_runtime.h>

namespace cg = cooperative_groups;

namespace caspar {

__global__ void __launch_bounds__(1024, 1)
    SimpleRadialPosePredDecreaseTimesTwoKernel(
        float* SimpleRadialPose_step,
        unsigned int SimpleRadialPose_step_num_alloc,
        float* SimpleRadialPose_precond_diag,
        unsigned int SimpleRadialPose_precond_diag_num_alloc,
        const float* const diag,
        float* SimpleRadialPose_njtr,
        unsigned int SimpleRadialPose_njtr_num_alloc,
        float* const out_SimpleRadialPose_pred_dec,
        size_t problem_size) {
  const int global_thread_idx = blockIdx.x * blockDim.x + threadIdx.x;
  __shared__ uint8_t inout_shared[4096];

  __shared__ float out_SimpleRadialPose_pred_dec_local[1];

  float r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15,
      r16, r17, r18;

  if (global_thread_idx < problem_size) {
    ReadIdx4<1024, float, float, float4>(SimpleRadialPose_step,
                                         0 * SimpleRadialPose_step_num_alloc,
                                         global_thread_idx,
                                         r0,
                                         r1,
                                         r2,
                                         r3);
    ReadIdx4<1024, float, float, float4>(SimpleRadialPose_njtr,
                                         0 * SimpleRadialPose_njtr_num_alloc,
                                         global_thread_idx,
                                         r4,
                                         r5,
                                         r6,
                                         r7);
    ReadIdx4<1024, float, float, float4>(
        SimpleRadialPose_precond_diag,
        0 * SimpleRadialPose_precond_diag_num_alloc,
        global_thread_idx,
        r8,
        r9,
        r10,
        r11);
    r12 = r2 * r10;
  };
  LoadUnique<1, float, float>(diag, 0, (float*)inout_shared);
  if (global_thread_idx < problem_size) {
    ReadShared1<float>((float*)inout_shared, 0, r13);
  };
  __syncthreads();
  if (global_thread_idx < problem_size) {
    r12 = fmaf(r13, r12, r6);
    r6 = r3 * r11;
    r6 = fmaf(r13, r6, r7);
    r6 = fmaf(r3, r6, r2 * r12);
    ReadIdx2<1024, float, float, float2>(SimpleRadialPose_step,
                                         4 * SimpleRadialPose_step_num_alloc,
                                         global_thread_idx,
                                         r12,
                                         r7);
    ReadIdx2<1024, float, float, float2>(SimpleRadialPose_njtr,
                                         4 * SimpleRadialPose_njtr_num_alloc,
                                         global_thread_idx,
                                         r14,
                                         r15);
    ReadIdx2<1024, float, float, float2>(
        SimpleRadialPose_precond_diag,
        4 * SimpleRadialPose_precond_diag_num_alloc,
        global_thread_idx,
        r16,
        r17);
    r18 = r12 * r16;
    r18 = fmaf(r13, r18, r14);
    r14 = r0 * r8;
    r14 = fmaf(r13, r14, r4);
    r4 = r1 * r9;
    r4 = fmaf(r13, r4, r5);
    r5 = r7 * r17;
    r5 = fmaf(r13, r5, r15);
    r6 = fmaf(r12, r18, r6);
    r6 = fmaf(r0, r14, r6);
    r6 = fmaf(r1, r4, r6);
    r6 = fmaf(r7, r5, r6);
  };
  SumStore<float>(out_SimpleRadialPose_pred_dec_local,
                  (float*)inout_shared,
                  0,
                  global_thread_idx < problem_size,
                  r6);
  SumFlushFinal<float>(
      out_SimpleRadialPose_pred_dec_local, out_SimpleRadialPose_pred_dec, 1);
}

void SimpleRadialPosePredDecreaseTimesTwo(
    float* SimpleRadialPose_step,
    unsigned int SimpleRadialPose_step_num_alloc,
    float* SimpleRadialPose_precond_diag,
    unsigned int SimpleRadialPose_precond_diag_num_alloc,
    const float* const diag,
    float* SimpleRadialPose_njtr,
    unsigned int SimpleRadialPose_njtr_num_alloc,
    float* const out_SimpleRadialPose_pred_dec,
    size_t problem_size) {
  if (problem_size == 0) {
    return;
  }

  const int n_blocks = (problem_size + 1024 - 1) / 1024;
  SimpleRadialPosePredDecreaseTimesTwoKernel<<<n_blocks, 1024>>>(
      SimpleRadialPose_step,
      SimpleRadialPose_step_num_alloc,
      SimpleRadialPose_precond_diag,
      SimpleRadialPose_precond_diag_num_alloc,
      diag,
      SimpleRadialPose_njtr,
      SimpleRadialPose_njtr_num_alloc,
      out_SimpleRadialPose_pred_dec,
      problem_size);
}

}  // namespace caspar