TADD

Tile Operation Diagram

Introduction

Elementwise add of two tiles.

Math Interpretation

For each element (i, j) in the valid region:

$${\mathrm{d}\mathrm{s}\mathrm{t}}_{i,j}={\mathrm{s}\mathrm{r}\mathrm{c}0}_{i,j}+{\mathrm{s}\mathrm{r}\mathrm{c}1}_{i,j}$$

Assembly Syntax

Synchronous form:

%dst = tadd %src0, %src1 : !pto.tile<...>

AS Level 1 (SSA)

%dst = pto.tadd %src0, %src1 : (!pto.tile<...>, !pto.tile<...>) -> !pto.tile<...>

AS Level 2 (DPS)

pto.tadd ins(%src0, %src1 : !pto.tile_buf<...>, !pto.tile_buf<...>) outs(%dst : !pto.tile_buf<...>)

C++ Intrinsic

Declared in include/pto/common/pto_instr.hpp:

template <typename TileDataDst, typename TileDataSrc0, typename TileDataSrc1, typename... WaitEvents>
PTO_INST RecordEvent TADD(TileDataDst &dst, TileDataSrc0 &src0, TileDataSrc1 &src1, WaitEvents &... events);

Constraints

• Implementation checks (A2A3):
  • TileData::DType must be one of: int32_t, int16_t, half, float.
  • Tile layout must be row-major (TileData::isRowMajor).
• Implementation checks (A5):
  • TileData::DType must be one of: int32_t, uint32_t, float, int16_t, uint16_t, half, bfloat16_t, uint8_t, int8_t.
  • Tile layout must be row-major (TileData::isRowMajor).
• Valid region:
  • The op uses dst.GetValidRow() / dst.GetValidCol() as the iteration domain; src0/src1 are assumed to be compatible (not validated by explicit runtime checks in this op).

Examples

Auto

#include <pto/pto-inst.hpp>

using namespace pto;

void example_auto() {
  using TileT = Tile<TileType::Vec, float, 16, 16>;
  TileT src0, src1, dst;
  TADD(dst, src0, src1);
}

Manual

#include <pto/pto-inst.hpp>

using namespace pto;

void example_manual() {
  using TileT = Tile<TileType::Vec, float, 16, 16>;
  TileT src0, src1, dst;
  TASSIGN(src0, 0x1000);
  TASSIGN(src1, 0x2000);
  TASSIGN(dst,  0x3000);
  TADD(dst, src0, src1);
}

ASM Form Examples

Auto Mode

# Auto mode: compiler/runtime-managed placement and scheduling.
%dst = pto.tadd %src0, %src1 : (!pto.tile<...>, !pto.tile<...>) -> !pto.tile<...>

Manual Mode

# Manual mode: resources must be bound explicitly before issuing the instruction.
# Optional for tile operands:
# pto.tassign %arg0, @tile(0x1000)
# pto.tassign %arg1, @tile(0x2000)
%dst = pto.tadd %src0, %src1 : (!pto.tile<...>, !pto.tile<...>) -> !pto.tile<...>

PTO Assembly Form

%dst = tadd %src0, %src1 : !pto.tile<...>
# AS Level 2 (DPS)
pto.tadd ins(%src0, %src1 : !pto.tile_buf<...>, !pto.tile_buf<...>) outs(%dst : !pto.tile_buf<...>)