Poplar and PopLibs
FieldTypes.hpp
1// Copyright (c) 2018 Graphcore Ltd. All rights reserved.
2
3#ifndef poplar_FieldTypes_hpp_
4#define poplar_FieldTypes_hpp_
5
6#include "AvailableVTypes.h"
7
8namespace poplar {
9
11enum class VectorLayout : unsigned {
12 NOT_A_VECTOR,
16 SPAN,
21 SHORT_SPAN,
26 ONE_PTR,
32 SCALED_PTR32,
38 SCALED_PTR64,
44 SCALED_PTR128,
51 COMPACT_PTR,
52};
53
57enum class VectorListLayout : unsigned {
58 NOT_A_VECTOR,
60 ONE_PTR,
62 SCALED_PTR32,
64 SCALED_PTR64,
66 SCALED_PTR128,
74 DELTAN,
85 DELTANELEMENTS,
90 COMPACT_DELTAN,
91};
92
93} // End namespace poplar.
94
95#endif // poplar_FieldTypes_hpp_
poplar
Poplar classes and functions.
Definition: ArrayRef.hpp:14
poplar::VectorListLayout
VectorListLayout
The memory layout used for a VectorList.
Definition: FieldTypes.hpp:57
poplar::VectorListLayout::DELTANELEMENTS
@ DELTANELEMENTS
A top-level structure with a 21-bit pointer to the base of the vector data, a 16 bit count for the nu...
poplar::VectorListLayout::COMPACT_DELTAN
@ COMPACT_DELTAN
This type will resolve into the best suited, ideally space optimised, inner pointer type depending on...
poplar::VectorListLayout::DELTAN
@ DELTAN
A top-level structure with a 20-bit pointer to the base of the vector data, a 12 bit count for the nu...
poplar::VectorLayout
VectorLayout
The memory layout used for a Vector.
Definition: FieldTypes.hpp:11
poplar::VectorLayout::SCALED_PTR32
@ SCALED_PTR32
Similar to ONE_PTR, but this uses a compressed 16-bit pointer containing bits 2-17 of the offset from...
poplar::VectorLayout::SCALED_PTR128
@ SCALED_PTR128
Similar to ONE_PTR, but this uses a compressed 16-bit pointer containing bits 4-18 of a full pointer.
poplar::VectorLayout::COMPACT_PTR
@ COMPACT_PTR
This pointer type will resolve into the best suited, ideally space optimised, pointer given the size ...
poplar::VectorLayout::SCALED_PTR64
@ SCALED_PTR64
Similar to ONE_PTR, but this uses a compressed 16-bit pointer containing bits 3-18 of a full pointer.
poplar::VectorLayout::SPAN
@ SPAN
A pointer to the start of the vector, and a count of the number of elements (not bytes) the vector co...
poplar::VectorLayout::ONE_PTR
@ ONE_PTR
Similar to SPAN but the count is not stored, so this is a single pointer to the start of the vector.
poplar::VectorLayout::SHORT_SPAN
@ SHORT_SPAN
A pointer to the start of the vector and a count of the number of elements the vector contains.