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fix[next][dace]: Bugfix for neighbors reduction with lift expressions #1599

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merged 2 commits into from
Aug 2, 2024
Merged

fix[next][dace]: Bugfix for neighbors reduction with lift expressions #1599

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cae4e9d
Bugfix for neighbors reduction with lift expressions
edopao Jul 31, 2024
f6bbc21
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edopao Aug 2, 2024
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13 changes: 7 additions & 6 deletions src/gt4py/next/program_processors/runners/dace_iterator/itir_to_tasklet.py
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Original file line number Diff line number Diff line change
Expand Up @@ -299,7 +299,13 @@ def _visit_lift_in_neighbors_reduction(

if offset_provider.has_skip_values:
# check neighbor validity on if/else inter-state edge
start_state = lift_context.body.add_state("start", is_start_block=True)
# use true branch for connectivity case
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start_state = lift_context.body.add_state_before(
lift_context.body.start_state,
"start",
condition=f"{lifted_index_connectors[0]} != {neighbor_skip_value}",
)
# use false branch for skip value case
skip_neighbor_state = lift_context.body.add_state("skip_neighbor")
skip_neighbor_state.add_edge(
skip_neighbor_state.add_tasklet(
Expand All @@ -315,11 +321,6 @@ def _visit_lift_in_neighbors_reduction(
skip_neighbor_state,
dace.InterstateEdge(condition=f"{lifted_index_connectors[0]} == {neighbor_skip_value}"),
)
lift_context.body.add_edge(
start_state,
lift_context.state,
dace.InterstateEdge(condition=f"{lifted_index_connectors[0]} != {neighbor_skip_value}"),
)

return [ValueExpr(neighbor_value_node, inner_outputs[0].dtype)]

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