TSHR

Tile Operation Diagram

Introduction

Elementwise shift-right of two tiles.

Math Interpretation

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

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

Assembly Syntax

Synchronous form:

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

AS Level 1 (SSA)

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

AS Level 2 (DPS)

pto.tshr 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 TSHR(TileDataDst &dst, TileDataSrc0 &src0, TileDataSrc1 &src1, WaitEvents &... events);

Constraints

• Implementation checks (A2A3):
  • Supported element types are uint8_t, int8_t, uint16_t, int16_t, uint32_t, and int32_t.
  • dst, src0, and src1 must use the same element type.
  • dst, src0, and src1 must be row-major.
  • Runtime: src0.GetValidRow()/GetValidCol() and src1.GetValidRow()/GetValidCol() must match dst.
• Implementation checks (A5):
  • Supported element types are uint8_t, int8_t, uint16_t, int16_t, uint32_t, and int32_t.
  • dst, src0, and src1 must use the same element type.
  • dst, src0, and src1 must be row-major.
  • Runtime: src0.GetValidRow()/GetValidCol() and src1.GetValidRow()/GetValidCol() must match dst.
• Valid region:
  • The op uses dst.GetValidRow() / dst.GetValidCol() as the iteration domain.

Examples

#include <pto/pto-inst.hpp>

using namespace pto;

void example() {
  using TileT = Tile<TileType::Vec, uint32_t, 16, 16>;
  TileT x, sh, out;
  TSHR(out, x, sh);
}

ASM Form Examples

Auto Mode

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

PTO Assembly Form

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