vector.gather
← vector dialect
Gather a vector from per-lane signed logical offsets added to the last view axis of a full-rank view origin. Each result lane reads origin with the final coordinate adjusted by offsets[lane]; the offset vector shape matches the result shape.
Operation contract
| Property |
Value |
| Semantic phase |
— |
| Interfaces |
CachePolicy, MemoryAccess |
| Memory effects |
read view |
Signature
| Kind |
Name |
Type |
Cardinality |
Description |
| Operand |
view |
view |
required |
Typed source view. |
| Operand |
offsets |
vector |
required |
Per-lane signed element offsets from the logical origin. |
| Operand |
indices |
index |
variadic |
Dynamic logical origin indices. |
| Result |
result |
vector |
required |
Gathered vector value. |
| Attribute |
cache_scope |
enum CacheScope |
optional |
Optional cache/coherency scope required by target lowering. |
| Attribute |
cache_temporal |
enum CacheTemporal |
optional |
Optional temporal cache policy required by target lowering. |
| Attribute |
static_indices |
i64_array |
required |
Static logical origin indices with INT64_MIN sentinels for dynamics. |
Verification constraints
HasIndexOrNonI1IntegerElement(offsets)SameElementType(view, result)SameShape(offsets, result)
Examples
%v = vector.gather %view[%row, %col][%offsets] : view<[%m]x[%n]xf32, %layout>, vector<4xindex> -> vector<4xf32>