TSHLS

Instruction Diagram

Introduction

Performs element-wise left shift on tiles.

Mathematical Semantics

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

$$\mathrm{dst}_{i,j} = \mathrm{src}_{i,j} \ll \mathrm{scalar}$$

Assembly Syntax

Synchronous form:

%dst = tshls %src, %scalar : !pto.tile<...>, i32

AS Level 1 (SSA)

%dst = pto.tshls %src, %scalar : (!pto.tile<...>, dtype) -> !pto.tile<...>

AS Level 2 (DPS)

pto.tshls ins(%src, %scalar : !pto.tile_buf<...>, dtype) outs(%dst : !pto.tile_buf<...>)

C++ Built-in APIs

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

The public include header is <pto/pto-inst.hpp>, and the internal declaration is located in pto/common/pto_instr.hpp.

template <typename TileDataDst, typename TileDataSrc, typename... WaitEvents>
PTO_INST RecordEvent TSHLS(TileDataDst &dst, TileDataSrc &src, typename TileDataDst::DType scalar, WaitEvents &... events);

Constraints

• Implementation check (Atlas A2/A3 training products/Atlas A2/A3 inference products):
  • The supported element types are int32_t, int, int16_t, uint32_t, unsigned int, and uint16_t.
  • dst and src must use the same element type.
  • dst and src must be vector tiles.
  • Runtime: src.GetValidRow() == dst.GetValidRow() and src.GetValidCol() == dst.GetValidCol().
  • The scalar supports only zero and positive values.
• Implementation check (Ascend 950PR/Ascend 950DT):
  • The supported element types are int32_t, int16_t, int8_t, uint32_t, uint16_t, and uint8_t.
  • dst and src must use the same element type.
  • dst and src must be vector tiles.
  • The static valid boundaries of both tiles must satisfy ValidRow <= Rows and ValidCol <= Cols.
  • At runtime: src.GetValidRow() == dst.GetValidRow() and src.GetValidCol() == dst.GetValidCol().
  • The scalar supports only zero and positive values.
• Valid region:
  • This operation uses dst.GetValidRow()/dst.GetValidCol() as the iteration domain.

Examples

#include <pto/pto-inst.hpp>

using namespace pto;

void example() {
  using TileDst = Tile<TileType::Vec, uint16_t, 16, 16>;
  using TileSrc = Tile<TileType::Vec, uint16_t, 16, 16>;
  TileDst dst;
  TileSrc src;
  TSHLS(dst, src, 0x2);
}

ASM Examples

Automatic Mode

# Automatic mode: the compiler/runtime is responsible for resource placement and scheduling.
%dst = pto.tshls %src, %scalar : (!pto.tile<...>, dtype) -> !pto.tile<...>

Manual Mode

# Manual mode: explicitly bind resources first, then issue the instruction.
# Optional (when the instruction contains tile operands):
# pto.tassign %arg0, @tile(0x1000)
# pto.tassign %arg1, @tile(0x2000)
%dst = pto.tshls %src, %scalar : (!pto.tile<...>, dtype) -> !pto.tile<...>

PTO Assembly Form

%dst = tshls %src, %scalar : !pto.tile<...>, i32
# AS Level 2 (DPS)
pto.tshls ins(%src, %scalar : !pto.tile_buf<...>, dtype) outs(%dst : !pto.tile_buf<...>)