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/*! \file
    \brief Helpers for rematerializing indices/dimensions in the thread hierarchy from special registers
*/

#pragma once

#include "cutlass/cutlass.h"

/////////////////////////////////////////////////////////////////////////////////////////////////

namespace cutlass {
namespace gemm {
namespace threadblock {

/////////////////////////////////////////////////////////////////////////////////////////////////

/// Helper to rematerialize block Idx. Reduces register liveness.
CUTLASS_DEVICE
int RematerializeThreadIdxX() {
  return threadIdx.x;
}

/// Helper to rematerialize block Idx. Reduces register liveness.
CUTLASS_DEVICE
int RematerializeThreadIdxY() {
  return threadIdx.y;
}

/// Helper to rematerialize block Idx. Reduces register liveness.
CUTLASS_DEVICE
int RematerializeThreadIdxZ() {
  return threadIdx.z;
}

/// Helper to rematerialize block Idx. Reduces register liveness.
CUTLASS_DEVICE
int RematerializeBlockIdxX() {
  return blockIdx.x;
}

/// Helper to rematerialize block Idx. Reduces register liveness.
CUTLASS_DEVICE
int RematerializeBlockIdxY() {
  return blockIdx.y;
}

/// Helper to rematerialize block Idx. Reduces register liveness.
CUTLASS_DEVICE
int RematerializeBlockIdxZ() {
  return blockIdx.z;
}

/// Helper to rematerialize block Dim. Reduces register liveness.
CUTLASS_DEVICE
int RematerializeBlockDimX() {
  return blockDim.x;
}

/// Helper to rematerialize block Dim. Reduces register liveness.
CUTLASS_DEVICE
int RematerializeBlockDimY() {
  return blockDim.y;
}

/// Helper to rematerialize block Dim. Reduces register liveness.
CUTLASS_DEVICE
int RematerializeBlockDimZ() {
  return blockDim.z;
}

/////////////////////////////////////////////////////////////////////////////////////////////////

} // namespace threadblock
} // namespace gemm
} // namespace cutlass


