TCI¶

Tile Operation Diagram¶

Introduction¶

Generate a contiguous integer sequence into a destination tile.

Math Interpretation¶

For a linearized index k over the valid elements:

• Ascending:

$$ \mathrm{dst}_{k} = S + k $$

• Descending:

$$ \mathrm{dst}_{k} = S - k $$

The linearization order depends on the tile layout (implementation-defined).

Assembly Syntax¶

PTO-AS form: see PTO-AS Specification.

Synchronous form:

%dst = tci %S {descending = false} : !pto.tile<...>

IR Level 1 (SSA)¶

%dst = pto.tci %scalar {descending = false} : dtype -> !pto.tile<...>

IR Level 2 (DPS)¶

pto.tci ins(%scalar {descending = false} : dtype) outs(%dst : !pto.tile_buf<...>)

C++ Intrinsic¶

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

template <typename TileData, typename T, int descending, typename... WaitEvents>
PTO_INST RecordEvent TCI(TileData& dst, T S, WaitEvents&... events);

Constraints¶

• Implementation checks (A2A3/A5):
• TileData::DType must be exactly the same type as the scalar template parameter T.
• dst/scalar element types must be identical, and must be one of: int32_t, uint32_t, int16_t, uint16_t.
• TileData::Cols != 1 (this is the condition enforced by the implementation).
• Valid region:
• The implementation uses dst.GetValidCol() as the sequence length and does not consult dst.GetValidRow().

Examples¶

Auto¶

#include <pto/pto-inst.hpp>

using namespace pto;

void example_auto() {
  using TileT = Tile<TileType::Vec, int32_t, 1, 16>;
  TileT dst;
  TCI<TileT, int32_t, /*descending=*/0>(dst, /*S=*/0);
}

Manual¶

#include <pto/pto-inst.hpp>

using namespace pto;

void example_manual() {
  using TileT = Tile<TileType::Vec, int32_t, 1, 16>;
  TileT dst;
  TASSIGN(dst, 0x1000);
  TCI<TileT, int32_t, /*descending=*/1>(dst, /*S=*/100);
}

ASM Form Examples¶

Auto Mode¶

# Auto mode: compiler/runtime-managed placement and scheduling.
%dst = pto.tci %scalar {descending = false} : dtype -> !pto.tile<...>

Manual Mode¶

# Manual mode: bind resources explicitly before issuing the instruction.
# Optional for tile operands:
# pto.tassign %arg0, @tile(0x1000)
# pto.tassign %arg1, @tile(0x2000)
%dst = pto.tci %scalar {descending = false} : dtype -> !pto.tile<...>

PTO Assembly Form¶

%dst = tci %S {descending = false} : !pto.tile<...>
# IR Level 2 (DPS)
pto.tci ins(%scalar {descending = false} : dtype) outs(%dst : !pto.tile_buf<...>)