def apply(self, sdfg: SDFG):
nsdfg: nodes.NestedSDFG = self.nsdfg(sdfg)
state = sdfg.node(self.state_id)
new_state = sdfg.add_state_before(state)
isedge = sdfg.edges_between(new_state, state)[0]
# Find relevant symbol mapping
mapping: Dict[str, str] = {}
mapping.update({k: str(v) for k, v in nsdfg.symbol_mapping.items()})
mapping.update({
k: next(iter(state.in_edges_by_connector(nsdfg, k))).data.data
for k in nsdfg.in_connectors
})
nisedge = nsdfg.sdfg.edges()[0]
# Safe replacement of edge contents
for k, v in mapping.items():
nisedge.data.replace(k, '__dacesym_' + k, replace_keys=False)
for k, v in mapping.items():
nisedge.data.replace('__dacesym_' + k, v, replace_keys=False)
for akey, aval in nisedge.data.assignments.items():
# Map assignment to outer edge
if akey not in sdfg.symbols and akey not in sdfg.arrays:
newname = akey
else:
newname = nsdfg.label + '_' + akey
isedge.data.assignments[newname] = aval
# Add symbol to outer SDFG
sdfg.add_symbol(newname, nsdfg.sdfg.symbols[akey])
# Add symbol mapping to nested SDFG
nsdfg.symbol_mapping[akey] = newname
isedge.data.condition = nisedge.data.condition
# Clean nested SDFG
nsdfg.sdfg.remove_node(nisedge.src)
def apply(self, sdfg):
fstate = sdfg.nodes()[self.subgraph[SymbolAliasPromotion._first_state]]
sstate = sdfg.nodes()[self.subgraph[
SymbolAliasPromotion._second_state]]
edge = sdfg.edges_between(fstate, sstate)[0].data
in_edge = sdfg.in_edges(fstate)[0].data
to_consider = _alias_assignments(sdfg, edge)
to_not_consider = set()
for k, v in to_consider.items():
# Remove symbols that are taking part in the edge's condition
condsyms = [str(s) for s in edge.condition_sympy().free_symbols]
if k in condsyms:
to_not_consider.add(k)
# Remove symbols that are set in the in_edge
# with a different assignment
if k in in_edge.assignments and in_edge.assignments[k] != v:
to_not_consider.add(k)
# Remove symbols whose assignment (RHS) is a symbol
# and is set in the in_edge.
if v in sdfg.symbols and v in in_edge.assignments:
to_not_consider.add(k)
# Remove symbols whose assignment (RHS) is a scalar
# and is set in the first state.
if v in sdfg.arrays and isinstance(sdfg.arrays[v], dt.Scalar):
if any(
isinstance(n, nodes.AccessNode) and n.data == v
for n in fstate.nodes()):
to_not_consider.add(k)
for k in to_not_consider:
del to_consider[k]
for k, v in to_consider.items():
del edge.assignments[k]
in_edge.assignments[k] = v
def apply(self, sdfg):
first_state = sdfg.nodes()[self.subgraph[StateFusion._first_state]]
second_state = sdfg.nodes()[self.subgraph[StateFusion._second_state]]
# Remove interstate edge(s)
edges = sdfg.edges_between(first_state, second_state)
for edge in edges:
if edge.data.assignments:
for src, dst, other_data in sdfg.in_edges(first_state):
other_data.assignments.update(edge.data.assignments)
sdfg.remove_edge(edge)
# Special case 1: first state is empty
if first_state.is_empty():
sdutil.change_edge_dest(sdfg, first_state, second_state)
sdfg.remove_node(first_state)
return
# Special case 2: second state is empty
if second_state.is_empty():
sdutil.change_edge_src(sdfg, second_state, first_state)
sdutil.change_edge_dest(sdfg, second_state, first_state)
sdfg.remove_node(second_state)
return
# Normal case: both states are not empty
# Find source/sink (data) nodes
first_input = [
node for node in sdutil.find_source_nodes(first_state)
if isinstance(node, nodes.AccessNode)
]
first_output = [
node for node in sdutil.find_sink_nodes(first_state)
if isinstance(node, nodes.AccessNode)
]
second_input = [
node for node in sdutil.find_source_nodes(second_state)
if isinstance(node, nodes.AccessNode)
]
# first input = first input - first output
first_input = [
node for node in first_input
if next((x for x in first_output
if x.label == node.label), None) is None
]
# Merge second state to first state
# First keep a backup of the topological sorted order of the nodes
order = [
x for x in reversed(list(nx.topological_sort(first_state._nx)))
if isinstance(x, nodes.AccessNode)
]
for node in second_state.nodes():
first_state.add_node(node)
for src, src_conn, dst, dst_conn, data in second_state.edges():
first_state.add_edge(src, src_conn, dst, dst_conn, data)
# Merge common (data) nodes
for node in second_input:
if first_state.in_degree(node) == 0:
n = next((x for x in order if x.label == node.label), None)
if n:
sdutil.change_edge_src(first_state, node, n)
first_state.remove_node(node)
n.access = dtypes.AccessType.ReadWrite
# Redirect edges and remove second state
sdutil.change_edge_src(sdfg, second_state, first_state)
sdfg.remove_node(second_state)
if Config.get_bool("debugprint"):
StateFusion._states_fused += 1
def apply(self, sdfg: SDFG):
nsdfg: nodes.NestedSDFG = self.nsdfg(sdfg)
state = sdfg.node(self.state_id)
new_state = sdfg.add_state_before(state)
isedge = sdfg.edges_between(new_state, state)[0]
# Find relevant symbol and data descriptor mapping
mapping: Dict[str, str] = {}
mapping.update({k: str(v) for k, v in nsdfg.symbol_mapping.items()})
mapping.update({
k: next(iter(state.in_edges_by_connector(nsdfg, k))).data.data
for k in nsdfg.in_connectors
})
mapping.update({
k: next(iter(state.out_edges_by_connector(nsdfg, k))).data.data
for k in nsdfg.out_connectors
})
# Get internal state and interstate edge
source_state = nsdfg.sdfg.start_state
nisedge = nsdfg.sdfg.out_edges(source_state)[0]
# Add state contents (nodes)
new_state.add_nodes_from(source_state.nodes())
# Replace data descriptors and symbols on state graph
for node in source_state.nodes():
if isinstance(node, nodes.AccessNode) and node.data in mapping:
node.data = mapping[node.data]
for edge in source_state.edges():
edge.data.replace(mapping)
if edge.data.data in mapping:
edge.data.data = mapping[edge.data.data]
# Add state contents (edges)
for edge in source_state.edges():
new_state.add_edge(edge.src, edge.src_conn, edge.dst, edge.dst_conn,
edge.data)
# Safe replacement of edge contents
def replfunc(m):
for k, v in mapping.items():
nisedge.data.replace(k, v, replace_keys=False)
symbolic.safe_replace(mapping, replfunc)
# Add interstate edge
for akey, aval in nisedge.data.assignments.items():
# Map assignment to outer edge
if akey not in sdfg.symbols and akey not in sdfg.arrays:
newname = akey
else:
newname = nsdfg.label + '_' + akey
isedge.data.assignments[newname] = aval
# Add symbol to outer SDFG
sdfg.add_symbol(newname, nsdfg.sdfg.symbols[akey])
# Add symbol mapping to nested SDFG
nsdfg.symbol_mapping[akey] = newname
isedge.data.condition = nisedge.data.condition
# Clean nested SDFG
nsdfg.sdfg.remove_node(source_state)
# Set new starting state
nsdfg.sdfg.start_state = nsdfg.sdfg.node_id(nisedge.dst)
def apply(self, _, sdfg: SDFG):
a: SDFGState = self.state_a
b: SDFGState = self.state_b
edge = sdfg.edges_between(a, b)[0]
edge.data.condition = CodeBlock("1")
def apply(self, _, sdfg: SDFG):
a: SDFGState = self.state_a
b: SDFGState = self.state_b
edge = sdfg.edges_between(a, b)[0]
sdfg.remove_edge(edge)
def apply(self, sdfg):
if isinstance(self.subgraph[StateFusion.first_state], SDFGState):
first_state: SDFGState = self.subgraph[StateFusion.first_state]
second_state: SDFGState = self.subgraph[StateFusion.second_state]
else:
first_state: SDFGState = sdfg.node(
self.subgraph[StateFusion.first_state])
second_state: SDFGState = sdfg.node(
self.subgraph[StateFusion.second_state])
# Remove interstate edge(s)
edges = sdfg.edges_between(first_state, second_state)
for edge in edges:
if edge.data.assignments:
for src, dst, other_data in sdfg.in_edges(first_state):
other_data.assignments.update(edge.data.assignments)
sdfg.remove_edge(edge)
# Special case 1: first state is empty
if first_state.is_empty():
sdutil.change_edge_dest(sdfg, first_state, second_state)
sdfg.remove_node(first_state)
if sdfg.start_state == first_state:
sdfg.start_state = sdfg.node_id(second_state)
return
# Special case 2: second state is empty
if second_state.is_empty():
sdutil.change_edge_src(sdfg, second_state, first_state)
sdutil.change_edge_dest(sdfg, second_state, first_state)
sdfg.remove_node(second_state)
if sdfg.start_state == second_state:
sdfg.start_state = sdfg.node_id(first_state)
return
# Normal case: both states are not empty
# Find source/sink (data) nodes
first_input = [
node for node in sdutil.find_source_nodes(first_state)
if isinstance(node, nodes.AccessNode)
]
first_output = [
node for node in sdutil.find_sink_nodes(first_state)
if isinstance(node, nodes.AccessNode)
]
second_input = [
node for node in sdutil.find_source_nodes(second_state)
if isinstance(node, nodes.AccessNode)
]
top2 = top_level_nodes(second_state)
# first input = first input - first output
first_input = [
node for node in first_input
if next((x for x in first_output
if x.data == node.data), None) is None
]
# Merge second state to first state
# First keep a backup of the topological sorted order of the nodes
sdict = first_state.scope_dict()
order = [
x for x in reversed(list(nx.topological_sort(first_state._nx)))
if isinstance(x, nodes.AccessNode) and sdict[x] is None
]
for node in second_state.nodes():
if isinstance(node, nodes.NestedSDFG):
# update parent information
node.sdfg.parent = first_state
first_state.add_node(node)
for src, src_conn, dst, dst_conn, data in second_state.edges():
first_state.add_edge(src, src_conn, dst, dst_conn, data)
top = top_level_nodes(first_state)
# Merge common (data) nodes
for node in second_input:
# merge only top level nodes, skip everything else
if node not in top2:
continue
if first_state.in_degree(node) == 0:
candidates = [
x for x in order if x.data == node.data and x in top
]
if len(candidates) == 0:
continue
elif len(candidates) == 1:
n = candidates[0]
else:
# Choose first candidate that intersects memlets
for cand in candidates:
if StateFusion.memlets_intersect(
first_state, [cand], False, second_state,
[node], True):
n = cand
break
else:
# No node intersects, use topologically-last node
n = candidates[0]
sdutil.change_edge_src(first_state, node, n)
first_state.remove_node(node)
n.access = dtypes.AccessType.ReadWrite
# Redirect edges and remove second state
sdutil.change_edge_src(sdfg, second_state, first_state)
sdfg.remove_node(second_state)
if sdfg.start_state == second_state:
sdfg.start_state = sdfg.node_id(first_state)
def apply(self, sdfg):
first_state = sdfg.nodes()[self.subgraph[StateFusion._first_state]]
second_state = sdfg.nodes()[self.subgraph[StateFusion._second_state]]
# Remove interstate edge(s)
edges = sdfg.edges_between(first_state, second_state)
for edge in edges:
if edge.data.assignments:
for src, dst, other_data in sdfg.in_edges(first_state):
other_data.assignments.update(edge.data.assignments)
sdfg.remove_edge(edge)
# Special case 1: first state is empty
if first_state.is_empty():
nxutil.change_edge_dest(sdfg, first_state, second_state)
sdfg.remove_node(first_state)
return
# Special case 2: second state is empty
if second_state.is_empty():
nxutil.change_edge_src(sdfg, second_state, first_state)
nxutil.change_edge_dest(sdfg, second_state, first_state)
sdfg.remove_node(second_state)
return
# Normal case: both states are not empty
# Find source/sink (data) nodes
first_input = [
node for node in nxutil.find_source_nodes(first_state)
if isinstance(node, nodes.AccessNode)
]
first_output = [
node for node in nxutil.find_sink_nodes(first_state)
if isinstance(node, nodes.AccessNode)
]
second_input = [
node for node in nxutil.find_source_nodes(second_state)
if isinstance(node, nodes.AccessNode)
]
# first input = first input - first output
first_input = [
node for node in first_input
if next((x for x in first_output
if x.label == node.label), None) is None
]
# Merge second state to first state
for node in second_state.nodes():
first_state.add_node(node)
for src, src_conn, dst, dst_conn, data in second_state.edges():
first_state.add_edge(src, src_conn, dst, dst_conn, data)
# Merge common (data) nodes
for node in first_input:
try:
old_node = next(x for x in second_input
if x.label == node.label)
except StopIteration:
continue
nxutil.change_edge_src(first_state, old_node, node)
first_state.remove_node(old_node)
second_input.remove(old_node)
for node in first_output:
try:
new_node = next(x for x in second_input
if x.label == node.label)
except StopIteration:
continue
nxutil.change_edge_dest(first_state, node, new_node)
first_state.remove_node(node)
second_input.remove(new_node)
# Redirect edges and remove second state
nxutil.change_edge_src(sdfg, second_state, first_state)
sdfg.remove_node(second_state)
if Config.get_bool("debugprint"):
StateFusion._states_fused += 1
