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"""GDB pretty printers for MLIR types."""
import gdb.printing
class StoragePrinter:
"""Prints bases of a struct and its fields."""
def __init__(self, val):
self.val = val
def children(self):
for field in self.val.type.fields():
if field.is_base_class:
yield '<%s>' % field.name, self.val.cast(field.type)
else:
yield field.name, self.val[field.name]
def to_string(self):
return 'mlir::Storage'
class TupleTypeStoragePrinter(StoragePrinter):
def children(self):
for child in StoragePrinter.children(self):
yield child
pointer_type = gdb.lookup_type('mlir::Type').pointer()
elements = (self.val.address + 1).cast(pointer_type)
for i in range(self.val['numElements']):
yield 'elements[%u]' % i, elements[i]
def to_string(self):
return 'mlir::TupleTypeStorage of %u elements' % self.val['numElements']
class FusedLocationStoragePrinter(StoragePrinter):
def children(self):
for child in StoragePrinter.children(self):
yield child
pointer_type = gdb.lookup_type('mlir::Location').pointer()
elements = (self.val.address + 1).cast(pointer_type)
for i in range(self.val['numLocs']):
yield 'locs[%u]' % i, elements[i]
def to_string(self):
return 'mlir::FusedLocationStorage of %u locs' % self.val['numLocs']
class StorageTypeMap:
"""Maps a TypeID to the corresponding concrete type.
Types need to be registered by name before the first lookup.
"""
def __init__(self):
self.map = None
self.type_names = []
def register_type(self, type_name):
assert not self.map, 'register_type called after __getitem__'
self.type_names += [type_name]
def _init_map(self):
"""Lazy initialization of self.map."""
if self.map:
return
self.map = {}
for type_name in self.type_names:
concrete_type = gdb.lookup_type(type_name)
try:
storage = gdb.parse_and_eval(
"&'mlir::detail::TypeIDExported::get<%s>()::instance'" % type_name)
except gdb.error:
# Skip when TypeID instance cannot be found in current context.
continue
if concrete_type and storage:
self.map[int(storage)] = concrete_type
def __getitem__(self, type_id):
self._init_map()
return self.map.get(int(type_id['storage']))
storage_type_map = StorageTypeMap()
def get_type_id_printer(val):
"""Returns a printer of the name of a mlir::TypeID."""
class TypeIdPrinter:
def __init__(self, string):
self.string = string
def to_string(self):
return self.string
concrete_type = storage_type_map[val]
if not concrete_type:
return None
return TypeIdPrinter('mlir::TypeID::get<%s>()' % concrete_type)
def get_attr_or_type_printer(val, get_type_id):
"""Returns a printer for mlir::Attribute or mlir::Type."""
class AttrOrTypePrinter:
def __init__(self, type_id, impl):
self.type_id = type_id
self.impl = impl
def children(self):
yield 'typeID', self.type_id
yield 'impl', self.impl
def to_string(self):
return 'cast<%s>' % self.impl.type
if not val['impl']:
return None
impl = val['impl'].dereference()
type_id = get_type_id(impl)
concrete_type = storage_type_map[type_id]
if not concrete_type:
return None
# 3rd template argument of StorageUserBase is the storage type.
storage_type = concrete_type.fields()[0].type.template_argument(2)
if not storage_type:
return None
return AttrOrTypePrinter(type_id, impl.cast(storage_type))
class ImplPrinter:
"""Printer for an instance with a single 'impl' member pointer."""
def __init__(self, val):
self.val = val
self.impl = val['impl']
def children(self):
if self.impl:
yield 'impl', self.impl.dereference()
def to_string(self):
return self.val.type.name
# Printers of types deriving from Attribute::AttrBase or Type::TypeBase.
for name in [
# mlir/IR/Attributes.h
'ArrayAttr',
'DictionaryAttr',
'FloatAttr',
'IntegerAttr',
'IntegerSetAttr',
'OpaqueAttr',
'StringAttr',
'SymbolRefAttr',
'TypeAttr',
'UnitAttr',
'DenseStringElementsAttr',
'DenseIntOrFPElementsAttr',
'SparseElementsAttr',
# mlir/IR/BuiltinTypes.h
'ComplexType',
'IndexType',
'IntegerType',
'Float16Type',
'Float32Type',
'Float64Type',
'Float80Type',
'Float128Type',
'NoneType',
'VectorType',
'RankedTensorType',
'UnrankedTensorType',
'MemRefType',
'UnrankedMemRefType',
'TupleType',
# mlir/IR/Location.h
'CallSiteLoc',
'FileLineColLoc',
'FusedLoc',
'NameLoc',
'OpaqueLoc',
'UnknownLoc'
]:
storage_type_map.register_type('mlir::%s' % name) # Register for upcasting.
storage_type_map.register_type('void') # Register default.
pp = gdb.printing.RegexpCollectionPrettyPrinter('MLIRSupport')
pp.add_printer('mlir::OperationName', '^mlir::OperationName$', ImplPrinter)
pp.add_printer('mlir::Value', '^mlir::Value$', ImplPrinter)
# Printers for types deriving from AttributeStorage or TypeStorage.
pp.add_printer('mlir::detail::FusedLocationStorage',
'^mlir::detail::FusedLocationStorage',
FusedLocationStoragePrinter)
pp.add_printer('mlir::detail::TupleTypeStorage',
'^mlir::detail::TupleTypeStorage$', TupleTypeStoragePrinter)
pp.add_printer('mlir::TypeID', '^mlir::TypeID$', get_type_id_printer)
def add_attr_or_type_printers(name):
"""Adds printers for mlir::Attribute or mlir::Type and their Storage type."""
get_type_id = lambda val: val['abstract%s' % name]['typeID']
pp.add_printer('mlir::%s' % name, '^mlir::%s$' % name,
lambda val: get_attr_or_type_printer(val, get_type_id))
# Upcasting printers of mlir::Attribute and mlir::Type.
for name in ['Attribute', 'Type']:
add_attr_or_type_printers(name)
gdb.printing.register_pretty_printer(gdb.current_objfile(), pp)
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