TCMPS¶

指令示意图¶

简介¶

将 Tile 与标量比较并写入逐元素比较结果。

数学语义¶

对每个元素 (i, j) 在有效区域内：

The encoding/type of dst is implementation-defined (often a mask-like tile).

汇编语法¶

PTO-AS 形式：参见 PTO-AS Specification.

同步形式：

%dst = tcmps %src, %scalar {cmpMode = #pto.cmp<EQ>} : !pto.tile<...> -> !pto.tile<...>

AS Level 1 (SSA)¶

%dst = pto.tcmps %src, %scalar {cmpMode = #pto<cmp xx>} : (!pto.tile<...>, dtype) -> !pto.tile<...>

AS Level 2 (DPS)¶

pto.tcmps ins(%src, %scalar{cmpMode = #pto<cmp xx>}: !pto.tile_buf<...>, dtype) outs(%dst : !pto.tile_buf<...>)

AS Level 1（SSA）¶

%dst = pto.tcmps %src, %scalar {cmpMode = #pto<cmp xx>} : (!pto.tile<...>, dtype) -> !pto.tile<...>

AS Level 2（DPS）¶

pto.tcmps ins(%src, %scalar{cmpMode = #pto<cmp xx>}: !pto.tile_buf<...>, dtype) outs(%dst : !pto.tile_buf<...>)

C++ 内建接口¶

声明于 include/pto/common/pto_instr.hpp and include/pto/common/type.hpp:

template <typename TileDataDst, typename TileDataSrc0, typename T, typename... WaitEvents>
PTO_INST RecordEvent TCMPS(TileDataDst& dst, TileDataSrc0& src0, T src1, CmpMode cmpMode, WaitEvents&... events);

约束¶

• 实现检查 (A2A3):
  • TileData::DType must be one of: int32_t, float, half, uint16_t, int16_t.
  • Tile 布局 must be row-major (TileData::isRowMajor).
• 实现检查 (A5):
  • TileData::DType must be one of: int32_t, float, half, uint16_t, int16_t.
  • Tile 布局 must be row-major (TileData::isRowMajor).
• Common constraints:
  • Tile location must be vector (TileData::Loc == TileType::Vec).
  • Static valid bounds: TileData::ValidRow <= TileData::Rows and TileData::ValidCol <= TileData::Cols.
  • Runtime: src0 and dst must have the same valid row/col.
• 有效区域:
  • The op uses dst.GetValidRow() / dst.GetValidCol() as the iteration domain.
• Comparison modes:
  • Supports CmpMode::EQ, CmpMode::NE, CmpMode::LT, CmpMode::GT, CmpMode::LE, CmpMode::GE.

示例¶

自动（Auto）¶

#include <pto/pto-inst.hpp>

using namespace pto;

void example_auto() {
  using SrcT = Tile<TileType::Vec, float, 16, 16>;
  using DstT = Tile<TileType::Vec, uint8_t, 16, 32, BLayout::RowMajor, -1, -1>;
  SrcT src;
  DstT dst(16, 2);
  TCMPS(dst, src, 0.0f, CmpMode::GT);
}

手动（Manual）¶

#include <pto/pto-inst.hpp>

using namespace pto;

void example_manual() {
  using SrcT = Tile<TileType::Vec, float, 16, 16>;
  using DstT = Tile<TileType::Vec, uint8_t, 16, 32, BLayout::RowMajor, -1, -1>;
  SrcT src;
  DstT dst(16, 2);
  TASSIGN(src, 0x1000);
  TASSIGN(dst, 0x2000);
  TCMPS(dst, src, 0.0f, CmpMode::GT);
}