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https://github.com/m-labs/artiq.git
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compiler.embedding: support calling methods marked as @kernel.
This commit is contained in:
whitequark
parent
d0fd61866f
commit
c21387dc09
@ -34,10 +34,11 @@ class ObjectMap:
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return self.forward_map[obj_key]
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class ASTSynthesizer:
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def __init__(self, type_map, value_map, expanded_from=None):
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def __init__(self, type_map, value_map, quote_function=None, expanded_from=None):
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self.source = ""
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self.source_buffer = source.Buffer(self.source, "<synthesized>")
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self.type_map, self.value_map = type_map, value_map
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self.quote_function = quote_function
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self.expanded_from = expanded_from
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def finalize(self):
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@ -82,6 +83,10 @@ class ASTSynthesizer:
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return asttyped.ListT(elts=elts, ctx=None, type=builtins.TList(),
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begin_loc=begin_loc, end_loc=end_loc,
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loc=begin_loc.join(end_loc))
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elif inspect.isfunction(value) or inspect.ismethod(value):
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function_name, function_type = self.quote_function(value, self.expanded_from)
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return asttyped.NameT(id=function_name, ctx=None, type=function_type,
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loc=self._add(repr(value)))
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else:
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quote_loc = self._add('`')
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repr_loc = self._add(repr(value))
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@ -155,6 +160,36 @@ class ASTSynthesizer:
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begin_loc=begin_loc, end_loc=end_loc, star_loc=None, dstar_loc=None,
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loc=name_loc.join(end_loc))
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def assign_local(self, var_name, value):
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name_loc = self._add(var_name)
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_ = self._add(" ")
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equals_loc = self._add("=")
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_ = self._add(" ")
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value_node = self.quote(value)
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var_node = asttyped.NameT(id=var_name, ctx=None, type=value_node.type,
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loc=name_loc)
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return ast.Assign(targets=[var_node], value=value_node,
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op_locs=[equals_loc], loc=name_loc.join(value_node.loc))
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def assign_attribute(self, obj, attr_name, value):
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obj_node = self.quote(obj)
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dot_loc = self._add(".")
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name_loc = self._add(attr_name)
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_ = self._add(" ")
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equals_loc = self._add("=")
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_ = self._add(" ")
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value_node = self.quote(value)
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attr_node = asttyped.AttributeT(value=obj_node, attr=attr_name, ctx=None,
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type=value_node.type,
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dot_loc=dot_loc, attr_loc=name_loc,
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loc=obj_node.loc.join(name_loc))
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return ast.Assign(targets=[attr_node], value=value_node,
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op_locs=[equals_loc], loc=name_loc.join(value_node.loc))
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class StitchingASTTypedRewriter(ASTTypedRewriter):
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def __init__(self, engine, prelude, globals, host_environment, quote):
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super().__init__(engine, prelude)
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@ -221,7 +256,20 @@ class StitchingInferencer(Inferencer):
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# overhead (i.e. synthesizing a source buffer), but has the advantage
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# of having the host-to-ARTIQ mapping code in only one place and
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# also immediately getting proper diagnostics on type errors.
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ast = self.quote(getattr(object_value, node.attr), object_loc.expanded_from)
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attr_value = getattr(object_value, node.attr)
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if (inspect.ismethod(attr_value) and hasattr(attr_value.__func__, 'artiq_embedded')
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and types.is_instance(object_type)):
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# In cases like:
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# class c:
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# @kernel
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# def f(self): pass
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# we want f to be defined on the class, not on the instance.
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attributes = object_type.constructor.attributes
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attr_value = attr_value.__func__
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else:
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attributes = object_type.attributes
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ast = self.quote(attr_value, None)
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def proxy_diagnostic(diag):
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note = diagnostic.Diagnostic("note",
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@ -238,17 +286,17 @@ class StitchingInferencer(Inferencer):
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Inferencer(engine=proxy_engine).visit(ast)
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IntMonomorphizer(engine=proxy_engine).visit(ast)
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if node.attr not in object_type.attributes:
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if node.attr not in attributes:
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# We just figured out what the type should be. Add it.
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object_type.attributes[node.attr] = ast.type
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elif object_type.attributes[node.attr] != ast.type:
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attributes[node.attr] = ast.type
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elif attributes[node.attr] != ast.type:
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# Does this conflict with an earlier guess?
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printer = types.TypePrinter()
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diag = diagnostic.Diagnostic("error",
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"host object has an attribute of type {typea}, which is"
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" different from previously inferred type {typeb}",
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{"typea": printer.name(ast.type),
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"typeb": printer.name(object_type.attributes[node.attr])},
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"typeb": printer.name(attributes[node.attr])},
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object_loc)
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self.engine.process(diag)
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@ -261,11 +309,9 @@ class TypedtreeHasher(algorithm.Visitor):
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return self.visit(obj)
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elif isinstance(obj, types.Type):
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return hash(obj.find())
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elif isinstance(obj, list):
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return tuple(obj)
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else:
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assert obj is None or isinstance(obj, (bool, int, float, str))
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return obj
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# We don't care; only types change during inference.
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pass
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fields = node._fields
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if hasattr(node, '_types'):
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@ -281,6 +327,7 @@ class Stitcher:
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self.name = ""
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self.typedtree = []
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self.inject_at = 0
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self.prelude = prelude.globals()
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self.globals = {}
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@ -290,6 +337,17 @@ class Stitcher:
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self.type_map = {}
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self.value_map = defaultdict(lambda: [])
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def stitch_call(self, function, args, kwargs):
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function_node = self._quote_embedded_function(function)
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self.typedtree.append(function_node)
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# We synthesize source code for the initial call so that
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# diagnostics would have something meaningful to display to the user.
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synthesizer = self._synthesizer()
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call_node = synthesizer.call(function_node, args, kwargs)
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synthesizer.finalize()
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self.typedtree.append(call_node)
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def finalize(self):
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inferencer = StitchingInferencer(engine=self.engine,
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value_map=self.value_map,
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@ -306,12 +364,50 @@ class Stitcher:
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break
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old_typedtree_hash = typedtree_hash
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# For every host class we embed, add an appropriate constructor
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# as a global. This is necessary for method lookup, which uses
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# the getconstructor instruction.
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for instance_type, constructor_type in list(self.type_map.values()):
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# Do we have any direct reference to a constructor?
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if len(self.value_map[constructor_type]) > 0:
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# Yes, use it.
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constructor, _constructor_loc = self.value_map[constructor_type][0]
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else:
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# No, extract one from a reference to an instance.
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instance, _instance_loc = self.value_map[instance_type][0]
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constructor = type(instance)
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self.globals[constructor_type.name] = constructor_type
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synthesizer = self._synthesizer()
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ast = synthesizer.assign_local(constructor_type.name, constructor)
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synthesizer.finalize()
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self._inject(ast)
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for attr in constructor_type.attributes:
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if types.is_function(constructor_type.attributes[attr]):
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synthesizer = self._synthesizer()
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ast = synthesizer.assign_attribute(constructor, attr,
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getattr(constructor, attr))
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synthesizer.finalize()
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self._inject(ast)
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# After we have found all functions, synthesize a module to hold them.
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source_buffer = source.Buffer("", "<synthesized>")
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self.typedtree = asttyped.ModuleT(
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typing_env=self.globals, globals_in_scope=set(),
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body=self.typedtree, loc=source.Range(source_buffer, 0, 0))
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def _inject(self, node):
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self.typedtree.insert(self.inject_at, node)
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self.inject_at += 1
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def _synthesizer(self, expanded_from=None):
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return ASTSynthesizer(expanded_from=expanded_from,
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type_map=self.type_map,
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value_map=self.value_map,
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quote_function=self._quote_function)
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def _quote_embedded_function(self, function):
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if not hasattr(function, "artiq_embedded"):
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raise ValueError("{} is not an embedded function".format(repr(function)))
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@ -414,10 +510,7 @@ class Stitcher:
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# This is tricky, because the default value might not have
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# a well-defined type in APython.
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# In this case, we bail out, but mention why we do it.
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synthesizer = ASTSynthesizer(type_map=self.type_map,
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value_map=self.value_map)
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ast = synthesizer.quote(param.default)
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synthesizer.finalize()
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ast = self._quote(param.default, None)
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def proxy_diagnostic(diag):
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note = diagnostic.Diagnostic("note",
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@ -499,11 +592,12 @@ class Stitcher:
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self.globals[function_name] = function_type
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self.functions[function] = function_name
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return function_name
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return function_name, function_type
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def _quote_function(self, function, loc):
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if function in self.functions:
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return self.functions[function]
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function_name = self.functions[function]
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return function_name, self.globals[function_name]
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if hasattr(function, "artiq_embedded"):
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if function.artiq_embedded.function is not None:
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@ -511,8 +605,8 @@ class Stitcher:
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# It doesn't really matter where we insert as long as it is before
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# the final call.
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function_node = self._quote_embedded_function(function)
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self.typedtree.insert(0, function_node)
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return function_node.name
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self._inject(function_node)
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return function_node.name, self.globals[function_node.name]
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elif function.artiq_embedded.syscall is not None:
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# Insert a storage-less global whose type instructs the compiler
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# to perform a system call instead of a regular call.
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@ -527,31 +621,7 @@ class Stitcher:
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syscall=None)
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def _quote(self, value, loc):
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if inspect.isfunction(value) or inspect.ismethod(value):
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# It's a function. We need to translate the function and insert
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# a reference to it.
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function_name = self._quote_function(value, loc)
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return asttyped.NameT(id=function_name, ctx=None,
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type=self.globals[function_name],
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loc=loc)
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else:
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# It's just a value. Quote it.
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synthesizer = ASTSynthesizer(expanded_from=loc,
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type_map=self.type_map,
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value_map=self.value_map)
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node = synthesizer.quote(value)
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synthesizer.finalize()
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return node
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def stitch_call(self, function, args, kwargs):
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function_node = self._quote_embedded_function(function)
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self.typedtree.append(function_node)
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# We synthesize source code for the initial call so that
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# diagnostics would have something meaningful to display to the user.
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synthesizer = ASTSynthesizer(type_map=self.type_map,
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value_map=self.value_map)
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call_node = synthesizer.call(function_node, args, kwargs)
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synthesizer = self._synthesizer(loc)
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node = synthesizer.quote(value)
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synthesizer.finalize()
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self.typedtree.append(call_node)
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return node
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@ -127,8 +127,10 @@ class Inferencer(algorithm.Visitor):
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when=" while inferring the type for self argument")
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attr_type = types.TMethod(object_type, attr_type)
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self._unify(node.type, attr_type,
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node.loc, None)
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if not types.is_var(attr_type):
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self._unify(node.type, attr_type,
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node.loc, None)
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else:
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if node.attr_loc.source_buffer == node.value.loc.source_buffer:
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highlights, notes = [node.value.loc], []
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@ -266,7 +266,7 @@ class LLVMIRGenerator:
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elif types.is_constructor(typ):
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name = "class.{}".format(typ.name)
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else:
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name = typ.name
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name = "instance.{}".format(typ.name)
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llty = self.llcontext.get_identified_type(name)
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if llty.elements is None:
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@ -991,7 +991,7 @@ class LLVMIRGenerator:
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llfields.append(self._quote(getattr(value, attr), typ.attributes[attr],
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lambda: path() + [attr]))
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llvalue = ll.Constant.literal_struct(llfields)
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llvalue = ll.Constant(llty.pointee, llfields)
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llconst = ll.GlobalVariable(self.llmodule, llvalue.type, global_name)
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llconst.initializer = llvalue
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llconst.linkage = "private"
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@ -1012,8 +1012,10 @@ class LLVMIRGenerator:
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elif builtins.is_str(typ):
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assert isinstance(value, (str, bytes))
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return self.llstr_of_str(value)
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elif types.is_rpc_function(typ):
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return ll.Constant.literal_struct([])
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elif types.is_function(typ):
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# RPC and C functions have no runtime representation; ARTIQ
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# functions are initialized explicitly.
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return ll.Constant(llty, ll.Undefined)
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else:
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print(typ)
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assert False
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