feat[next][dace]: use new LoopRegion construct for scan operator #1424
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Description
The lowering of scan operator to SDFG uses a state machine to represent a loop. This PR replaces the state machine with a
LoopRegionconstruct introduced in dace v0.15. This construct is not yet supported by dace transformation, but it will in the future and it could open new optimization opportunities (e.g. K-caching).Requirements