def iet_build(stree):
"""
Construct an Iteration/Expression tree(IET) from a ScheduleTree.
"""
nsections = 0
queues = OrderedDict()
for i in stree.visit():
if i == stree:
# We hit this handle at the very end of the visit
return List(body=queues.pop(i))
elif i.is_Exprs:
exprs = [Increment(e) if e.is_Increment else Expression(e) for e in i.exprs]
body = ExpressionBundle(i.ispace, i.ops, i.traffic, body=exprs)
elif i.is_Conditional:
body = Conditional(i.guard, queues.pop(i))
elif i.is_Iteration:
body = Iteration(queues.pop(i), i.dim, i.limits, direction=i.direction,
properties=i.properties, uindices=i.sub_iterators)
elif i.is_Section:
body = Section('section%d' % nsections, body=queues.pop(i))
nsections += 1
elif i.is_Halo:
body = HaloSpot(i.halo_scheme, body=queues.pop(i))
queues.setdefault(i.parent, []).append(body)
assert False
def iet_make(stree):
"""Create an IET from a ScheduleTree."""
nsections = 0
queues = OrderedDict()
for i in stree.visit():
if i == stree:
# We hit this handle at the very end of the visit
return List(body=queues.pop(i))
elif i.is_Exprs:
exprs = [Increment(e) if e.is_Increment else Expression(e) for e in i.exprs]
body = ExpressionBundle(i.ispace, i.ops, i.traffic, body=exprs)
elif i.is_Conditional:
body = Conditional(i.guard, queues.pop(i))
elif i.is_Iteration:
# Order to ensure deterministic code generation
uindices = sorted(i.sub_iterators, key=lambda d: d.name)
# Generate Iteration
body = Iteration(queues.pop(i), i.dim, i.limits, offsets=i.offsets,
direction=i.direction, properties=i.properties,
uindices=uindices)
elif i.is_Section:
body = Section('section%d' % nsections, body=queues.pop(i))
nsections += 1
elif i.is_Halo:
body = HaloSpot(i.halo_scheme, body=queues.pop(i))
queues.setdefault(i.parent, []).append(body)
assert False
def iet_make(stree):
"""
Create an Iteration/Expression tree (IET) from a :class:`ScheduleTree`.
"""
nsections = 0
queues = OrderedDict()
for i in stree.visit():
if i == stree:
# We hit this handle at the very end of the visit
return List(body=queues.pop(i))
elif i.is_Exprs:
exprs = [
Increment(e) if e.is_Increment else Expression(e)
for e in i.exprs
]
body = [ExpressionBundle(i.shape, i.ops, i.traffic, body=exprs)]
elif i.is_Conditional:
body = [Conditional(i.guard, queues.pop(i))]
elif i.is_Iteration:
# Order to ensure deterministic code generation
uindices = sorted(i.sub_iterators, key=lambda d: d.name)
# Generate Iteration
body = [
Iteration(queues.pop(i),
i.dim,
i.dim.limits,
offsets=i.limits,
direction=i.direction,
uindices=uindices)
]
elif i.is_Section:
body = [Section('section%d' % nsections, body=queues.pop(i))]
nsections += 1
elif i.is_Halo:
body = [HaloSpot(hs)
for hs in i.halo_scheme.components] + queues.pop(i)
queues.setdefault(i.parent, []).extend(body)
assert False