| Index: runtime/vm/kernel_to_il.cc
|
| diff --git a/runtime/vm/kernel_to_il.cc b/runtime/vm/kernel_to_il.cc
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..e3320efff78febc5b3ddc987439b851c84b0bfee
|
| --- /dev/null
|
| +++ b/runtime/vm/kernel_to_il.cc
|
| @@ -0,0 +1,5567 @@
|
| +// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
|
| +// for details. All rights reserved. Use of this source code is governed by a
|
| +// BSD-style license that can be found in the LICENSE file.
|
| +
|
| +#include <map>
|
| +#include <set>
|
| +#include <string>
|
| +
|
| +#include "vm/kernel_to_il.h"
|
| +
|
| +#include "vm/compiler.h"
|
| +#include "vm/intermediate_language.h"
|
| +#include "vm/kernel_reader.h"
|
| +#include "vm/longjump.h"
|
| +#include "vm/method_recognizer.h"
|
| +#include "vm/object_store.h"
|
| +#include "vm/report.h"
|
| +#include "vm/resolver.h"
|
| +#include "vm/stack_frame.h"
|
| +
|
| +namespace dart {
|
| +
|
| +DECLARE_FLAG(bool, support_externalizable_strings);
|
| +
|
| +namespace kernel {
|
| +
|
| +#define Z (zone_)
|
| +#define H (translation_helper_)
|
| +#define T (type_translator_)
|
| +#define I Isolate::Current()
|
| +
|
| +
|
| +void ScopeBuilder::EnterScope(TreeNode* node) {
|
| + scope_ = new (Z) LocalScope(scope_, depth_.function_, depth_.loop_);
|
| + result_->scopes.Insert(node, scope_);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::ExitScope() { scope_ = scope_->parent(); }
|
| +
|
| +
|
| +LocalVariable* ScopeBuilder::MakeVariable(const dart::String& name) {
|
| + return new (Z)
|
| + LocalVariable(TokenPosition::kNoSource, name, Object::dynamic_type());
|
| +}
|
| +
|
| +
|
| +LocalVariable* ScopeBuilder::MakeVariable(const dart::String& name,
|
| + const Type& type) {
|
| + return new (Z) LocalVariable(TokenPosition::kNoSource, name, type);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::AddParameters(FunctionNode* function, intptr_t pos) {
|
| + List<VariableDeclaration>& positional = function->positional_parameters();
|
| + for (intptr_t i = 0; i < positional.length(); ++i) {
|
| + AddParameter(positional[i], pos++);
|
| + }
|
| + List<VariableDeclaration>& named = function->named_parameters();
|
| + for (intptr_t i = 0; i < named.length(); ++i) {
|
| + AddParameter(named[i], pos++);
|
| + }
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::AddParameter(VariableDeclaration* declaration,
|
| + intptr_t pos) {
|
| + // TODO(27590): Handle final.
|
| + LocalVariable* variable = MakeVariable(H.DartSymbol(declaration->name()));
|
| + scope_->InsertParameterAt(pos, variable);
|
| + result_->locals.Insert(declaration, variable);
|
| +
|
| + // The default value may contain 'let' bindings for which the constant
|
| + // evaluator needs scope bindings.
|
| + Expression* defaultValue = declaration->initializer();
|
| + if (defaultValue != NULL) {
|
| + defaultValue->AcceptExpressionVisitor(this);
|
| + }
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::AddExceptionVariable(
|
| + GrowableArray<LocalVariable*>* variables, const char* prefix,
|
| + intptr_t nesting_depth) {
|
| + LocalVariable* v = NULL;
|
| +
|
| + // If we are inside a function with yield points then Kernel transformer
|
| + // could have lifted some of the auxiliary exception variables into the
|
| + // context to preserve them across yield points because they might
|
| + // be needed for rethrow.
|
| + // Check if it did and capture such variables instead of introducing
|
| + // new local ones.
|
| + // Note: function that wrap kSyncYielding function does not contain
|
| + // its own try/catches.
|
| + if (current_function_node_->async_marker() == FunctionNode::kSyncYielding) {
|
| + ASSERT(current_function_scope_->parent() != NULL);
|
| + v = current_function_scope_->parent()->LocalLookupVariable(
|
| + GenerateName(prefix, nesting_depth - 1));
|
| + if (v != NULL) {
|
| + scope_->CaptureVariable(v);
|
| + }
|
| + }
|
| +
|
| + // No need to create variables for try/catch-statements inside
|
| + // nested functions.
|
| + if (depth_.function_ > 0) return;
|
| + if (variables->length() >= nesting_depth) return;
|
| +
|
| + // If variable was not lifted by the transformer introduce a new
|
| + // one into the current function scope.
|
| + if (v == NULL) {
|
| + v = MakeVariable(GenerateName(prefix, nesting_depth - 1));
|
| +
|
| + // If transformer did not lift the variable then there is no need
|
| + // to lift it into the context when we encouter a YieldStatement.
|
| + v->set_is_forced_stack();
|
| + current_function_scope_->AddVariable(v);
|
| + }
|
| +
|
| + variables->Add(v);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::AddTryVariables() {
|
| + AddExceptionVariable(&result_->catch_context_variables,
|
| + ":saved_try_context_var", depth_.try_);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::AddCatchVariables() {
|
| + AddExceptionVariable(&result_->exception_variables, ":exception",
|
| + depth_.catch_);
|
| + AddExceptionVariable(&result_->stack_trace_variables, ":stack_trace",
|
| + depth_.catch_);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::AddIteratorVariable() {
|
| + if (depth_.function_ > 0) return;
|
| + if (result_->iterator_variables.length() >= depth_.for_in_) return;
|
| +
|
| + ASSERT(result_->iterator_variables.length() == depth_.for_in_ - 1);
|
| + LocalVariable* iterator =
|
| + MakeVariable(GenerateName(":iterator", depth_.for_in_ - 1));
|
| + current_function_scope_->AddVariable(iterator);
|
| + result_->iterator_variables.Add(iterator);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::LookupVariable(VariableDeclaration* declaration) {
|
| + LocalVariable* variable = result_->locals.Lookup(declaration);
|
| + if (variable == NULL) {
|
| + // We have not seen a declaration of the variable, so it must be the
|
| + // case that we are compiling a nested function and the variable is
|
| + // declared in an outer scope. In that case, look it up in the scope by
|
| + // name and add it to the variable map to simplify later lookup.
|
| + ASSERT(current_function_scope_->parent() != NULL);
|
| + const dart::String& name = H.DartSymbol(declaration->name());
|
| + variable = current_function_scope_->parent()->LookupVariable(name, true);
|
| + ASSERT(variable != NULL);
|
| + result_->locals.Insert(declaration, variable);
|
| + }
|
| + if (variable->owner()->function_level() < scope_->function_level()) {
|
| + // We call `LocalScope->CaptureVariable(variable)` in two scenarios for two
|
| + // different reasons:
|
| + // Scenario 1:
|
| + // We need to know which variables defined in this function
|
| + // are closed over by nested closures in order to ensure we will
|
| + // create a [Context] object of appropriate size and store captured
|
| + // variables there instead of the stack.
|
| + // Scenario 2:
|
| + // We need to find out which variables defined in enclosing functions
|
| + // are closed over by this function/closure or nested closures. This
|
| + // is necessary in order to build a fat flattened [ContextScope]
|
| + // object.
|
| + scope_->CaptureVariable(variable);
|
| + } else {
|
| + ASSERT(variable->owner()->function_level() == scope_->function_level());
|
| + }
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::LookupCapturedVariableByName(LocalVariable** variable,
|
| + const dart::String& name) {
|
| + if (*variable == NULL) {
|
| + *variable = scope_->LookupVariable(name, true);
|
| + ASSERT(*variable != NULL);
|
| + scope_->CaptureVariable(*variable);
|
| + }
|
| +}
|
| +
|
| +
|
| +const dart::String& ScopeBuilder::GenerateName(const char* prefix,
|
| + intptr_t suffix) {
|
| + char name[64];
|
| + OS::SNPrint(name, 64, "%s%" Pd "", prefix, suffix);
|
| + return H.DartSymbol(name);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::AddVariable(VariableDeclaration* declaration) {
|
| + // TODO(27590): Handle final and const, including function declarations.
|
| + const dart::String& name = declaration->name()->is_empty()
|
| + ? GenerateName(":var", name_index_++)
|
| + : H.DartSymbol(declaration->name());
|
| + LocalVariable* variable = MakeVariable(name);
|
| + scope_->AddVariable(variable);
|
| + result_->locals.Insert(declaration, variable);
|
| +}
|
| +
|
| +
|
| +static bool IsStaticInitializer(const Function& function, Zone* zone) {
|
| + return (function.kind() == RawFunction::kImplicitStaticFinalGetter) &&
|
| + dart::String::Handle(zone, function.name())
|
| + .StartsWith(Symbols::InitPrefix());
|
| +}
|
| +
|
| +
|
| +ScopeBuildingResult* ScopeBuilder::BuildScopes() {
|
| + if (result_ != NULL) return result_;
|
| +
|
| + ASSERT(scope_ == NULL && depth_.loop_ == 0 && depth_.function_ == 0);
|
| + result_ = new (Z) ScopeBuildingResult();
|
| +
|
| + ParsedFunction* parsed_function = parsed_function_;
|
| + const dart::Function& function = parsed_function->function();
|
| +
|
| + LocalScope* enclosing_scope = NULL;
|
| + if (function.IsLocalFunction()) {
|
| + enclosing_scope = LocalScope::RestoreOuterScope(
|
| + ContextScope::Handle(Z, function.context_scope()));
|
| + }
|
| + current_function_scope_ = scope_ = new (Z) LocalScope(enclosing_scope, 0, 0);
|
| + scope_->AddVariable(parsed_function->EnsureExpressionTemp());
|
| + scope_->AddVariable(parsed_function->current_context_var());
|
| + parsed_function->SetNodeSequence(
|
| + new SequenceNode(TokenPosition::kNoSource, scope_));
|
| +
|
| + switch (function.kind()) {
|
| + case RawFunction::kClosureFunction:
|
| + case RawFunction::kRegularFunction:
|
| + case RawFunction::kGetterFunction:
|
| + case RawFunction::kSetterFunction:
|
| + case RawFunction::kConstructor: {
|
| + FunctionNode* node;
|
| + if (node_->IsProcedure()) {
|
| + node = Procedure::Cast(node_)->function();
|
| + } else if (node_->IsConstructor()) {
|
| + node = Constructor::Cast(node_)->function();
|
| + } else {
|
| + node = FunctionNode::Cast(node_);
|
| + }
|
| + current_function_node_ = node;
|
| +
|
| + intptr_t pos = 0;
|
| + if (function.IsClosureFunction()) {
|
| + LocalVariable* variable = MakeVariable(Symbols::ClosureParameter());
|
| + scope_->InsertParameterAt(pos++, variable);
|
| + } else if (!function.is_static()) {
|
| + // We use [is_static] instead of [IsStaticFunction] because the latter
|
| + // returns `false` for constructors.
|
| + dart::Class& klass = dart::Class::Handle(Z, function.Owner());
|
| + Type& klass_type = H.GetCanonicalType(klass);
|
| + LocalVariable* variable = MakeVariable(Symbols::This(), klass_type);
|
| + scope_->InsertParameterAt(pos++, variable);
|
| + result_->this_variable = variable;
|
| +
|
| + // We visit instance field initializers because they might contain
|
| + // [Let] expressions and we need to have a mapping.
|
| + if (node_->IsConstructor()) {
|
| + Class* klass = Class::Cast(Constructor::Cast(node_)->parent());
|
| +
|
| + for (intptr_t i = 0; i < klass->fields().length(); i++) {
|
| + Field* field = klass->fields()[i];
|
| + if (!field->IsStatic() && (field->initializer() != NULL)) {
|
| + EnterScope(field);
|
| + field->initializer()->AcceptExpressionVisitor(this);
|
| + ExitScope();
|
| + }
|
| + }
|
| + }
|
| + } else if (function.IsFactory()) {
|
| + LocalVariable* variable = MakeVariable(
|
| + Symbols::TypeArgumentsParameter(), AbstractType::dynamic_type());
|
| + scope_->InsertParameterAt(pos++, variable);
|
| + result_->type_arguments_variable = variable;
|
| + }
|
| + AddParameters(node, pos);
|
| +
|
| + // We generate a syntethic body for implicit closure functions - which
|
| + // will forward the call to the real function.
|
| + // -> see BuildGraphOfImplicitClosureFunction
|
| + if (!function.IsImplicitClosureFunction()) {
|
| + node_->AcceptVisitor(this);
|
| + }
|
| + break;
|
| + }
|
| + case RawFunction::kImplicitGetter:
|
| + case RawFunction::kImplicitStaticFinalGetter:
|
| + case RawFunction::kImplicitSetter: {
|
| + ASSERT(node_->IsField());
|
| + if (IsStaticInitializer(function, Z)) {
|
| + node_->AcceptVisitor(this);
|
| + break;
|
| + }
|
| + bool is_setter = function.IsImplicitSetterFunction();
|
| + bool is_method = !function.IsStaticFunction();
|
| + intptr_t pos = 0;
|
| + if (is_method) {
|
| + dart::Class& klass = dart::Class::Handle(Z, function.Owner());
|
| + Type& klass_type = H.GetCanonicalType(klass);
|
| + LocalVariable* variable = MakeVariable(Symbols::This(), klass_type);
|
| + scope_->InsertParameterAt(pos++, variable);
|
| + result_->this_variable = variable;
|
| + }
|
| + if (is_setter) {
|
| + result_->setter_value = MakeVariable(Symbols::Value());
|
| + scope_->InsertParameterAt(pos++, result_->setter_value);
|
| + }
|
| + break;
|
| + }
|
| + case RawFunction::kMethodExtractor: {
|
| + // Add a receiver parameter. Though it is captured, we emit code to
|
| + // explicitly copy it to a fixed offset in a freshly-allocated context
|
| + // instead of using the generic code for regular functions.
|
| + // Therefore, it isn't necessary to mark it as captured here.
|
| + dart::Class& klass = dart::Class::Handle(Z, function.Owner());
|
| + Type& klass_type = H.GetCanonicalType(klass);
|
| + LocalVariable* variable = MakeVariable(Symbols::This(), klass_type);
|
| + scope_->InsertParameterAt(0, variable);
|
| + result_->this_variable = variable;
|
| + break;
|
| + }
|
| + case RawFunction::kNoSuchMethodDispatcher:
|
| + case RawFunction::kInvokeFieldDispatcher:
|
| + for (intptr_t i = 0; i < function.NumParameters(); ++i) {
|
| + LocalVariable* variable = MakeVariable(
|
| + dart::String::ZoneHandle(Z, function.ParameterNameAt(i)));
|
| + scope_->InsertParameterAt(i, variable);
|
| + }
|
| + break;
|
| + case RawFunction::kSignatureFunction:
|
| + case RawFunction::kIrregexpFunction:
|
| + UNREACHABLE();
|
| + }
|
| +
|
| + parsed_function->AllocateVariables();
|
| +
|
| + return result_;
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitThisExpression(ThisExpression* node) {
|
| + HandleSpecialLoad(&result_->this_variable, Symbols::This());
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitTypeParameterType(TypeParameterType* node) {
|
| + Function& function = Function::Handle(Z, parsed_function_->function().raw());
|
| + while (function.IsClosureFunction()) {
|
| + function = function.parent_function();
|
| + }
|
| +
|
| + if (function.IsFactory()) {
|
| + // The type argument vector is passed as the very first argument to the
|
| + // factory constructor function.
|
| + HandleSpecialLoad(&result_->type_arguments_variable,
|
| + Symbols::TypeArgumentsParameter());
|
| + } else {
|
| + // The type argument vector is stored on the instance object. We therefore
|
| + // need to capture `this`.
|
| + HandleSpecialLoad(&result_->this_variable, Symbols::This());
|
| + }
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitVariableGet(VariableGet* node) {
|
| + LookupVariable(node->variable());
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitVariableSet(VariableSet* node) {
|
| + LookupVariable(node->variable());
|
| + node->VisitChildren(this);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::HandleLocalFunction(TreeNode* parent,
|
| + FunctionNode* function) {
|
| + LocalScope* saved_function_scope = current_function_scope_;
|
| + FunctionNode* saved_function_node = current_function_node_;
|
| + ScopeBuilder::DepthState saved_depth_state = depth_;
|
| + depth_ = DepthState(depth_.function_ + 1);
|
| + EnterScope(parent);
|
| + current_function_scope_ = scope_;
|
| + current_function_node_ = function;
|
| + if (depth_.function_ == 1) {
|
| + FunctionScope function_scope = {function, scope_};
|
| + result_->function_scopes.Add(function_scope);
|
| + }
|
| + AddParameters(function);
|
| + VisitFunctionNode(function);
|
| + ExitScope();
|
| + depth_ = saved_depth_state;
|
| + current_function_scope_ = saved_function_scope;
|
| + current_function_node_ = saved_function_node;
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::HandleSpecialLoad(LocalVariable** variable,
|
| + const dart::String& symbol) {
|
| + if (current_function_scope_->parent() != NULL) {
|
| + // We are building the scope tree of a closure function and saw [node]. We
|
| + // lazily populate the variable using the parent function scope.
|
| + if (*variable == NULL) {
|
| + *variable =
|
| + current_function_scope_->parent()->LookupVariable(symbol, true);
|
| + ASSERT(*variable != NULL);
|
| + }
|
| + }
|
| +
|
| + if ((current_function_scope_->parent() != NULL) ||
|
| + (scope_->function_level() > 0)) {
|
| + // Every scope we use the [variable] from needs to be notified of the usage
|
| + // in order to ensure that preserving the context scope on that particular
|
| + // use-site also includes the [variable].
|
| + scope_->CaptureVariable(*variable);
|
| + }
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitFunctionExpression(FunctionExpression* node) {
|
| + HandleLocalFunction(node, node->function());
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitLet(Let* node) {
|
| + EnterScope(node);
|
| + node->VisitChildren(this);
|
| + ExitScope();
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitBlock(Block* node) {
|
| + EnterScope(node);
|
| + node->VisitChildren(this);
|
| + ExitScope();
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitVariableDeclaration(VariableDeclaration* node) {
|
| + AddVariable(node);
|
| + node->VisitChildren(this);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitFunctionDeclaration(FunctionDeclaration* node) {
|
| + VisitVariableDeclaration(node->variable());
|
| + HandleLocalFunction(node, node->function());
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitWhileStatement(WhileStatement* node) {
|
| + ++depth_.loop_;
|
| + node->VisitChildren(this);
|
| + --depth_.loop_;
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitDoStatement(DoStatement* node) {
|
| + ++depth_.loop_;
|
| + node->VisitChildren(this);
|
| + --depth_.loop_;
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitForStatement(ForStatement* node) {
|
| + EnterScope(node);
|
| + List<VariableDeclaration>& variables = node->variables();
|
| + for (intptr_t i = 0; i < variables.length(); ++i) {
|
| + VisitVariableDeclaration(variables[i]);
|
| + }
|
| + ++depth_.loop_;
|
| + if (node->condition() != NULL) {
|
| + node->condition()->AcceptExpressionVisitor(this);
|
| + }
|
| + node->body()->AcceptStatementVisitor(this);
|
| + List<Expression>& updates = node->updates();
|
| + for (intptr_t i = 0; i < updates.length(); ++i) {
|
| + updates[i]->AcceptExpressionVisitor(this);
|
| + }
|
| + --depth_.loop_;
|
| + ExitScope();
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitForInStatement(ForInStatement* node) {
|
| + node->iterable()->AcceptExpressionVisitor(this);
|
| + ++depth_.for_in_;
|
| + AddIteratorVariable();
|
| + ++depth_.loop_;
|
| + EnterScope(node);
|
| + VisitVariableDeclaration(node->variable());
|
| + node->body()->AcceptStatementVisitor(this);
|
| + ExitScope();
|
| + --depth_.loop_;
|
| + --depth_.for_in_;
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::AddSwitchVariable() {
|
| + if ((depth_.function_ == 0) && (result_->switch_variable == NULL)) {
|
| + LocalVariable* variable = MakeVariable(Symbols::SwitchExpr());
|
| + current_function_scope_->AddVariable(variable);
|
| + result_->switch_variable = variable;
|
| + }
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitSwitchStatement(SwitchStatement* node) {
|
| + AddSwitchVariable();
|
| + node->VisitChildren(this);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitReturnStatement(ReturnStatement* node) {
|
| + if ((depth_.function_ == 0) && (depth_.finally_ > 0) &&
|
| + (result_->finally_return_variable == NULL)) {
|
| + const dart::String& name = H.DartSymbol(":try_finally_return_value");
|
| + LocalVariable* variable = MakeVariable(name);
|
| + current_function_scope_->AddVariable(variable);
|
| + result_->finally_return_variable = variable;
|
| + }
|
| + node->VisitChildren(this);
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitTryCatch(TryCatch* node) {
|
| + ++depth_.try_;
|
| + AddTryVariables();
|
| + node->body()->AcceptStatementVisitor(this);
|
| + --depth_.try_;
|
| +
|
| + ++depth_.catch_;
|
| + AddCatchVariables();
|
| + List<Catch>& catches = node->catches();
|
| + for (intptr_t i = 0; i < catches.length(); ++i) {
|
| + Catch* ketch = catches[i];
|
| + EnterScope(ketch);
|
| + if (ketch->exception() != NULL) {
|
| + VisitVariableDeclaration(ketch->exception());
|
| + }
|
| + if (ketch->stack_trace() != NULL) {
|
| + VisitVariableDeclaration(ketch->stack_trace());
|
| + }
|
| + ketch->body()->AcceptStatementVisitor(this);
|
| + ExitScope();
|
| + }
|
| + --depth_.catch_;
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitTryFinally(TryFinally* node) {
|
| + ++depth_.try_;
|
| + ++depth_.finally_;
|
| + AddTryVariables();
|
| + node->body()->AcceptStatementVisitor(this);
|
| + --depth_.finally_;
|
| + --depth_.try_;
|
| +
|
| + ++depth_.catch_;
|
| + AddCatchVariables();
|
| + node->finalizer()->AcceptStatementVisitor(this);
|
| + --depth_.catch_;
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitFunctionNode(FunctionNode* node) {
|
| + List<TypeParameter>& type_parameters = node->type_parameters();
|
| + for (intptr_t i = 0; i < type_parameters.length(); ++i) {
|
| + VisitTypeParameter(type_parameters[i]);
|
| + }
|
| + // Do not visit the positional and named parameters, because they've
|
| + // already been added to the scope.
|
| + if (node->body() != NULL) {
|
| + node->body()->AcceptStatementVisitor(this);
|
| + }
|
| +
|
| + // Ensure that :await_jump_var and :await_ctx_var are captured.
|
| + if (node->async_marker() == FunctionNode::kSyncYielding) {
|
| + {
|
| + LocalVariable* temp = NULL;
|
| + LookupCapturedVariableByName(
|
| + (depth_.function_ == 0) ? &result_->yield_jump_variable : &temp,
|
| + Symbols::AwaitJumpVar());
|
| + }
|
| + {
|
| + LocalVariable* temp = NULL;
|
| + LookupCapturedVariableByName(
|
| + (depth_.function_ == 0) ? &result_->yield_context_variable : &temp,
|
| + Symbols::AwaitContextVar());
|
| + }
|
| + }
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitYieldStatement(YieldStatement* node) {
|
| + ASSERT(node->is_native());
|
| + if (depth_.function_ == 0) {
|
| + AddSwitchVariable();
|
| + // Promote all currently visible local variables into the context.
|
| + // TODO(27590) CaptureLocalVariables promotes to many variables into
|
| + // the scope. Mark those variables as stack_local.
|
| + // TODO(27590) we don't need to promote those variables that are
|
| + // not used across yields.
|
| + scope_->CaptureLocalVariables(current_function_scope_);
|
| + }
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitAssertStatement(AssertStatement* node) {
|
| + if (I->asserts()) {
|
| + RecursiveVisitor::VisitAssertStatement(node);
|
| + }
|
| +}
|
| +
|
| +
|
| +void ScopeBuilder::VisitConstructor(Constructor* node) {
|
| + // Field initializers that come from non-static field declarations are
|
| + // compiled as if they appear in the constructor initializer list. This is
|
| + // important for closure-valued field initializers because the VM expects the
|
| + // corresponding closure functions to appear as if they were nested inside the
|
| + // constructor.
|
| + List<Field>& fields = Class::Cast(node->parent())->fields();
|
| + for (intptr_t i = 0; i < fields.length(); ++i) {
|
| + Field* field = fields[i];
|
| + Expression* initializer = field->initializer();
|
| + if (!field->IsStatic() && (initializer != NULL)) {
|
| + initializer->AcceptExpressionVisitor(this);
|
| + }
|
| + }
|
| + node->VisitChildren(this);
|
| +}
|
| +
|
| +
|
| +class BreakableBlock {
|
| + public:
|
| + BreakableBlock(FlowGraphBuilder* builder, LabeledStatement* statement)
|
| + : builder_(builder),
|
| + labeled_statement_(statement),
|
| + outer_(builder->breakable_block_),
|
| + destination_(NULL),
|
| + outer_finally_(builder->try_finally_block_),
|
| + context_depth_(builder->context_depth_) {
|
| + builder_->breakable_block_ = this;
|
| + }
|
| + ~BreakableBlock() { builder_->breakable_block_ = outer_; }
|
| +
|
| + bool HadJumper() { return destination_ != NULL; }
|
| +
|
| + JoinEntryInstr* destination() { return destination_; }
|
| +
|
| + JoinEntryInstr* BreakDestination(LabeledStatement* label,
|
| + TryFinallyBlock** outer_finally,
|
| + intptr_t* context_depth) {
|
| + BreakableBlock* block = builder_->breakable_block_;
|
| + while (block->labeled_statement_ != label) {
|
| + block = block->outer_;
|
| + }
|
| + ASSERT(block != NULL);
|
| + *outer_finally = block->outer_finally_;
|
| + *context_depth = block->context_depth_;
|
| + return block->EnsureDestination();
|
| + }
|
| +
|
| + private:
|
| + JoinEntryInstr* EnsureDestination() {
|
| + if (destination_ == NULL) {
|
| + destination_ = builder_->BuildJoinEntry();
|
| + }
|
| + return destination_;
|
| + }
|
| +
|
| + FlowGraphBuilder* builder_;
|
| + LabeledStatement* labeled_statement_;
|
| + BreakableBlock* outer_;
|
| + JoinEntryInstr* destination_;
|
| + TryFinallyBlock* outer_finally_;
|
| + intptr_t context_depth_;
|
| +};
|
| +
|
| +
|
| +class SwitchBlock {
|
| + public:
|
| + SwitchBlock(FlowGraphBuilder* builder, SwitchStatement* switch_stmt)
|
| + : builder_(builder),
|
| + outer_(builder->switch_block_),
|
| + outer_finally_(builder->try_finally_block_),
|
| + switch_statement_(switch_stmt),
|
| + context_depth_(builder->context_depth_) {
|
| + builder_->switch_block_ = this;
|
| + }
|
| + ~SwitchBlock() { builder_->switch_block_ = outer_; }
|
| +
|
| + bool HadJumper(SwitchCase* switch_case) {
|
| + return destinations_.Lookup(switch_case) != NULL;
|
| + }
|
| +
|
| + JoinEntryInstr* Destination(SwitchCase* label,
|
| + TryFinallyBlock** outer_finally = NULL,
|
| + intptr_t* context_depth = NULL) {
|
| + // Find corresponding [SwitchStatement].
|
| + SwitchBlock* block = this;
|
| + while (true) {
|
| + block->EnsureSwitchCaseMapping();
|
| + if (block->Contains(label)) break;
|
| + block = block->outer_;
|
| + }
|
| +
|
| + // Set the outer finally block.
|
| + if (outer_finally != NULL) {
|
| + *outer_finally = block->outer_finally_;
|
| + *context_depth = block->context_depth_;
|
| + }
|
| +
|
| + // Ensure there's [JoinEntryInstr] for that [SwitchCase].
|
| + return block->EnsureDestination(label);
|
| + }
|
| +
|
| + private:
|
| + typedef std::set<SwitchCase*> DestinationSwitches;
|
| +
|
| + JoinEntryInstr* EnsureDestination(SwitchCase* switch_case) {
|
| + JoinEntryInstr* cached_inst = destinations_.Lookup(switch_case);
|
| + if (cached_inst == NULL) {
|
| + JoinEntryInstr* inst = builder_->BuildJoinEntry();
|
| + destinations_.Insert(switch_case, inst);
|
| + return inst;
|
| + }
|
| + return cached_inst;
|
| + }
|
| +
|
| + void EnsureSwitchCaseMapping() {
|
| + if (destination_switches_.begin() == destination_switches_.end()) {
|
| + List<SwitchCase>& cases = switch_statement_->cases();
|
| + for (intptr_t i = 0; i < cases.length(); i++) {
|
| + destination_switches_.insert(cases[i]);
|
| + }
|
| + }
|
| + }
|
| +
|
| + bool Contains(SwitchCase* sc) {
|
| + return destination_switches_.find(sc) != destination_switches_.end();
|
| + }
|
| +
|
| + FlowGraphBuilder* builder_;
|
| + SwitchBlock* outer_;
|
| +
|
| + Map<SwitchCase, JoinEntryInstr*> destinations_;
|
| + DestinationSwitches destination_switches_;
|
| +
|
| + TryFinallyBlock* outer_finally_;
|
| + SwitchStatement* switch_statement_;
|
| + intptr_t context_depth_;
|
| +};
|
| +
|
| +
|
| +class TryFinallyBlock {
|
| + public:
|
| + TryFinallyBlock(FlowGraphBuilder* builder, Statement* finalizer)
|
| + : builder_(builder),
|
| + outer_(builder->try_finally_block_),
|
| + finalizer_(finalizer),
|
| + context_depth_(builder->context_depth_),
|
| + // Finalizers are executed outside of the try block hence
|
| + // try depth of finalizers are one less than current try
|
| + // depth.
|
| + try_depth_(builder->try_depth_ - 1) {
|
| + builder_->try_finally_block_ = this;
|
| + }
|
| + ~TryFinallyBlock() { builder_->try_finally_block_ = outer_; }
|
| +
|
| + Statement* finalizer() const { return finalizer_; }
|
| + intptr_t context_depth() const { return context_depth_; }
|
| + intptr_t try_depth() const { return try_depth_; }
|
| + TryFinallyBlock* outer() const { return outer_; }
|
| +
|
| + private:
|
| + FlowGraphBuilder* const builder_;
|
| + TryFinallyBlock* const outer_;
|
| + Statement* const finalizer_;
|
| + const intptr_t context_depth_;
|
| + const intptr_t try_depth_;
|
| +};
|
| +
|
| +
|
| +class TryCatchBlock {
|
| + public:
|
| + explicit TryCatchBlock(FlowGraphBuilder* builder,
|
| + intptr_t try_handler_index = -1)
|
| + : builder_(builder),
|
| + outer_(builder->try_catch_block_),
|
| + try_index_(try_handler_index) {
|
| + if (try_index_ == -1) try_index_ = builder->AllocateTryIndex();
|
| + builder->try_catch_block_ = this;
|
| + }
|
| + ~TryCatchBlock() { builder_->try_catch_block_ = outer_; }
|
| +
|
| + intptr_t TryIndex() { return try_index_; }
|
| +
|
| + private:
|
| + FlowGraphBuilder* builder_;
|
| + TryCatchBlock* outer_;
|
| + intptr_t try_index_;
|
| +};
|
| +
|
| +
|
| +class CatchBlock {
|
| + public:
|
| + CatchBlock(FlowGraphBuilder* builder, LocalVariable* exception_var,
|
| + LocalVariable* stack_trace_var, intptr_t catch_try_index)
|
| + : builder_(builder),
|
| + outer_(builder->catch_block_),
|
| + exception_var_(exception_var),
|
| + stack_trace_var_(stack_trace_var),
|
| + catch_try_index_(catch_try_index) {
|
| + builder_->catch_block_ = this;
|
| + }
|
| + ~CatchBlock() { builder_->catch_block_ = outer_; }
|
| +
|
| + LocalVariable* exception_var() { return exception_var_; }
|
| + LocalVariable* stack_trace_var() { return stack_trace_var_; }
|
| + intptr_t catch_try_index() { return catch_try_index_; }
|
| +
|
| + private:
|
| + FlowGraphBuilder* builder_;
|
| + CatchBlock* outer_;
|
| + LocalVariable* exception_var_;
|
| + LocalVariable* stack_trace_var_;
|
| + intptr_t catch_try_index_;
|
| +};
|
| +
|
| +
|
| +Fragment& Fragment::operator+=(const Fragment& other) {
|
| + if (entry == NULL) {
|
| + entry = other.entry;
|
| + current = other.current;
|
| + } else if (current != NULL && other.entry != NULL) {
|
| + current->LinkTo(other.entry);
|
| + current = other.current;
|
| + }
|
| + return *this;
|
| +}
|
| +
|
| +
|
| +Fragment& Fragment::operator<<=(Instruction* next) {
|
| + if (entry == NULL) {
|
| + entry = current = next;
|
| + } else if (current != NULL) {
|
| + current->LinkTo(next);
|
| + current = next;
|
| + }
|
| + return *this;
|
| +}
|
| +
|
| +
|
| +Fragment Fragment::closed() {
|
| + ASSERT(entry != NULL);
|
| + return Fragment(entry, NULL);
|
| +}
|
| +
|
| +
|
| +Fragment operator+(const Fragment& first, const Fragment& second) {
|
| + Fragment result = first;
|
| + result += second;
|
| + return result;
|
| +}
|
| +
|
| +
|
| +Fragment operator<<(const Fragment& fragment, Instruction* next) {
|
| + Fragment result = fragment;
|
| + result <<= next;
|
| + return result;
|
| +}
|
| +
|
| +
|
| +RawInstance* TranslationHelper::Canonicalize(const Instance& instance) {
|
| + if (instance.IsNull()) return instance.raw();
|
| +
|
| + const char* error_str = NULL;
|
| + RawInstance* result = instance.CheckAndCanonicalize(thread(), &error_str);
|
| + if (result == Object::null()) {
|
| + ReportError("Invalid const object %s", error_str);
|
| + }
|
| + return result;
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartString(const char* content,
|
| + Heap::Space space) {
|
| + return dart::String::ZoneHandle(Z, dart::String::New(content, space));
|
| +}
|
| +
|
| +
|
| +dart::String& TranslationHelper::DartString(String* content,
|
| + Heap::Space space) {
|
| + return dart::String::ZoneHandle(
|
| + Z, dart::String::FromUTF8(content->buffer(), content->size(), space));
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartSymbol(const char* content) const {
|
| + return dart::String::ZoneHandle(Z, Symbols::New(thread_, content));
|
| +}
|
| +
|
| +
|
| +dart::String& TranslationHelper::DartSymbol(String* content) const {
|
| + return dart::String::ZoneHandle(
|
| + Z, dart::Symbols::FromUTF8(thread_, content->buffer(), content->size()));
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartClassName(
|
| + kernel::Class* kernel_klass) {
|
| + if (kernel_klass->name() != NULL) {
|
| + ASSERT(kernel_klass->IsNormalClass());
|
| + dart::String& name = DartString(kernel_klass->name());
|
| + return ManglePrivateName(kernel_klass->parent(), &name);
|
| + } else {
|
| + // Mixin class names are not mangled.
|
| + ASSERT(kernel_klass->IsMixinClass());
|
| +
|
| + // We construct the string from right to left:
|
| + // "Base&Mixin1&Mixin2&...&MixinN"
|
| + dart::String& partial = dart::String::Handle(Z, dart::String::New(""));
|
| + dart::String& amp = dart::String::Handle(Z, dart::String::New("&"));
|
| + dart::String& tmp = dart::String::Handle(Z);
|
| + while (kernel_klass->name() == NULL) {
|
| + ASSERT(kernel_klass->IsMixinClass());
|
| +
|
| + MixinClass* kernel_mixin_class = MixinClass::Cast(kernel_klass);
|
| + InterfaceType* base_type = kernel_mixin_class->first();
|
| + InterfaceType* mixin_type = kernel_mixin_class->second();
|
| +
|
| + String* mixin_name = NormalClass::Cast(mixin_type->klass())->name();
|
| +
|
| + tmp = dart::String::FromUTF8(mixin_name->buffer(), mixin_name->size());
|
| +
|
| + partial = dart::String::Concat(amp, partial);
|
| + partial = dart::String::Concat(tmp, partial);
|
| +
|
| + kernel_klass = base_type->klass();
|
| + }
|
| +
|
| + tmp = dart::String::FromUTF8(kernel_klass->name()->buffer(),
|
| + kernel_klass->name()->size());
|
| +
|
| + partial = dart::String::Concat(amp, partial);
|
| + partial = dart::String::Concat(tmp, partial);
|
| +
|
| + partial = dart::Symbols::New(thread_, partial);
|
| + return partial;
|
| + }
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartConstructorName(Constructor* node) {
|
| + Class* klass = Class::Cast(node->parent());
|
| + return DartFactoryName(klass, node->name());
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartProcedureName(Procedure* procedure) {
|
| + if (procedure->kind() == Procedure::kSetter) {
|
| + return DartSetterName(procedure->name());
|
| + } else if (procedure->kind() == Procedure::kGetter) {
|
| + return DartGetterName(procedure->name());
|
| + } else if (procedure->kind() == Procedure::kFactory) {
|
| + return DartFactoryName(Class::Cast(procedure->parent()), procedure->name());
|
| + } else {
|
| + return DartMethodName(procedure->name());
|
| + }
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartSetterName(Name* kernel_name) {
|
| + // The names flowing into [content] are coming from the Kernel file:
|
| + // * user-defined setters: `fieldname=`
|
| + // * property-set expressions: `fieldname`
|
| + //
|
| + // The VM uses `get:fieldname` and `set:fieldname`.
|
| + //
|
| + // => In order to be consistent, we remove the `=` always and adopt the VM
|
| + // conventions.
|
| + String* content = kernel_name->string();
|
| + ASSERT(content->size() > 0);
|
| + intptr_t skip = 0;
|
| + if (content->buffer()[content->size() - 1] == '=') {
|
| + skip = 1;
|
| + }
|
| + dart::String& name = dart::String::ZoneHandle(
|
| + Z, dart::String::FromUTF8(content->buffer(), content->size() - skip));
|
| + ManglePrivateName(kernel_name->library(), &name, false);
|
| + name = dart::Field::SetterSymbol(name);
|
| + return name;
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartGetterName(Name* kernel_name) {
|
| + dart::String& name = DartString(kernel_name->string());
|
| + ManglePrivateName(kernel_name->library(), &name, false);
|
| + name = dart::Field::GetterSymbol(name);
|
| + return name;
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartFieldName(Name* kernel_name) {
|
| + dart::String& name = DartString(kernel_name->string());
|
| + return ManglePrivateName(kernel_name->library(), &name);
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartInitializerName(Name* kernel_name) {
|
| + // The [DartFieldName] will take care of mangling the name.
|
| + dart::String& name =
|
| + dart::String::Handle(Z, DartFieldName(kernel_name).raw());
|
| + name = Symbols::FromConcat(thread_, Symbols::InitPrefix(), name);
|
| + return name;
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartMethodName(Name* kernel_name) {
|
| + dart::String& name = DartString(kernel_name->string());
|
| + return ManglePrivateName(kernel_name->library(), &name);
|
| +}
|
| +
|
| +
|
| +const dart::String& TranslationHelper::DartFactoryName(Class* klass,
|
| + Name* method_name) {
|
| + // [DartMethodName] will mangle the name.
|
| + dart::String& name =
|
| + dart::String::Handle(Z, DartMethodName(method_name).raw());
|
| +
|
| + // We build a String which looks like <classname>.<constructor-name>.
|
| + // [DartClassName] will mangle the name.
|
| + dart::String& temp = dart::String::Handle(Z, DartClassName(klass).raw());
|
| + temp = dart::String::Concat(temp, Symbols::Dot());
|
| + temp = dart::String::Concat(temp, name);
|
| + return dart::String::ZoneHandle(Z, dart::Symbols::New(thread_, temp));
|
| +}
|
| +
|
| +
|
| +dart::RawLibrary* TranslationHelper::LookupLibraryByKernelLibrary(
|
| + Library* kernel_library) {
|
| + const dart::String& library_name = DartSymbol(kernel_library->import_uri());
|
| + ASSERT(!library_name.IsNull());
|
| + dart::RawLibrary* library =
|
| + dart::Library::LookupLibrary(thread_, library_name);
|
| + ASSERT(library != Object::null());
|
| + return library;
|
| +}
|
| +
|
| +
|
| +dart::RawClass* TranslationHelper::LookupClassByKernelClass(
|
| + Class* kernel_klass) {
|
| + dart::RawClass* klass = NULL;
|
| +
|
| + const dart::String& class_name = DartClassName(kernel_klass);
|
| + Library* kernel_library = Library::Cast(kernel_klass->parent());
|
| + dart::Library& library =
|
| + dart::Library::Handle(Z, LookupLibraryByKernelLibrary(kernel_library));
|
| + klass = library.LookupClassAllowPrivate(class_name);
|
| +
|
| + ASSERT(klass != Object::null());
|
| + return klass;
|
| +}
|
| +
|
| +
|
| +dart::RawField* TranslationHelper::LookupFieldByKernelField(
|
| + Field* kernel_field) {
|
| + TreeNode* node = kernel_field->parent();
|
| +
|
| + dart::Class& klass = dart::Class::Handle(Z);
|
| + if (node->IsClass()) {
|
| + klass = LookupClassByKernelClass(Class::Cast(node));
|
| + } else {
|
| + ASSERT(node->IsLibrary());
|
| + dart::Library& library = dart::Library::Handle(
|
| + Z, LookupLibraryByKernelLibrary(Library::Cast(node)));
|
| + klass = library.toplevel_class();
|
| + }
|
| + dart::RawField* field =
|
| + klass.LookupFieldAllowPrivate(DartSymbol(kernel_field->name()->string()));
|
| + ASSERT(field != Object::null());
|
| + return field;
|
| +}
|
| +
|
| +
|
| +dart::RawFunction* TranslationHelper::LookupStaticMethodByKernelProcedure(
|
| + Procedure* procedure) {
|
| + ASSERT(procedure->IsStatic());
|
| + const dart::String& procedure_name = DartProcedureName(procedure);
|
| +
|
| + // The parent is either a library or a class (in which case the procedure is a
|
| + // static method).
|
| + TreeNode* parent = procedure->parent();
|
| + if (parent->IsClass()) {
|
| + dart::Class& klass =
|
| + dart::Class::Handle(Z, LookupClassByKernelClass(Class::Cast(parent)));
|
| + dart::RawFunction* raw_function =
|
| + klass.LookupFunctionAllowPrivate(procedure_name);
|
| + ASSERT(raw_function != Object::null());
|
| +
|
| + // TODO(27590): We can probably get rid of this after no longer using
|
| + // core libraries from the source.
|
| + dart::Function& function = dart::Function::ZoneHandle(Z, raw_function);
|
| + if (function.IsRedirectingFactory()) {
|
| + ClassFinalizer::ResolveRedirectingFactory(klass, function);
|
| + function = function.RedirectionTarget();
|
| + }
|
| + return function.raw();
|
| + } else {
|
| + ASSERT(parent->IsLibrary());
|
| + dart::Library& library = dart::Library::Handle(
|
| + Z, LookupLibraryByKernelLibrary(Library::Cast(parent)));
|
| + dart::RawFunction* function =
|
| + library.LookupFunctionAllowPrivate(procedure_name);
|
| + ASSERT(function != Object::null());
|
| + return function;
|
| + }
|
| +}
|
| +
|
| +
|
| +dart::RawFunction* TranslationHelper::LookupConstructorByKernelConstructor(
|
| + Constructor* constructor) {
|
| + Class* kernel_klass = Class::Cast(constructor->parent());
|
| + dart::Class& klass =
|
| + dart::Class::Handle(Z, LookupClassByKernelClass(kernel_klass));
|
| + return LookupConstructorByKernelConstructor(klass, constructor);
|
| +}
|
| +
|
| +
|
| +dart::RawFunction* TranslationHelper::LookupConstructorByKernelConstructor(
|
| + const dart::Class& owner, Constructor* constructor) {
|
| + dart::RawFunction* function =
|
| + owner.LookupConstructorAllowPrivate(DartConstructorName(constructor));
|
| + ASSERT(function != Object::null());
|
| + return function;
|
| +}
|
| +
|
| +
|
| +dart::Type& TranslationHelper::GetCanonicalType(const dart::Class& klass) {
|
| + ASSERT(!klass.IsNull());
|
| + // Note that if cls is _Closure, the returned type will be _Closure,
|
| + // and not the signature type.
|
| + Type& type = Type::ZoneHandle(Z, klass.CanonicalType());
|
| + if (!type.IsNull()) {
|
| + return type;
|
| + }
|
| + type = Type::New(klass, TypeArguments::Handle(Z, klass.type_parameters()),
|
| + klass.token_pos());
|
| + if (klass.is_type_finalized()) {
|
| + type ^= ClassFinalizer::FinalizeType(
|
| + klass, type, ClassFinalizer::kCanonicalizeWellFormed);
|
| + // Note that the receiver type may now be a malbounded type.
|
| + klass.SetCanonicalType(type);
|
| + }
|
| + return type;
|
| +}
|
| +
|
| +
|
| +void TranslationHelper::ReportError(const char* format, ...) {
|
| + const Script& null_script = Script::Handle(Z);
|
| +
|
| + va_list args;
|
| + va_start(args, format);
|
| + Report::MessageV(Report::kError, null_script, TokenPosition::kNoSource,
|
| + Report::AtLocation, format, args);
|
| + va_end(args);
|
| + UNREACHABLE();
|
| +}
|
| +
|
| +
|
| +void TranslationHelper::ReportError(const Error& prev_error, const char* format,
|
| + ...) {
|
| + const Script& null_script = Script::Handle(Z);
|
| +
|
| + va_list args;
|
| + va_start(args, format);
|
| + Report::LongJumpV(prev_error, null_script, TokenPosition::kNoSource, format,
|
| + args);
|
| + va_end(args);
|
| + UNREACHABLE();
|
| +}
|
| +
|
| +
|
| +dart::String& TranslationHelper::ManglePrivateName(Library* kernel_library,
|
| + dart::String* name_to_modify,
|
| + bool symbolize) {
|
| + if (name_to_modify->Length() >= 1 && name_to_modify->CharAt(0) == '_') {
|
| + const dart::Library& library =
|
| + dart::Library::Handle(Z, LookupLibraryByKernelLibrary(kernel_library));
|
| + *name_to_modify = library.PrivateName(*name_to_modify);
|
| + } else if (symbolize) {
|
| + *name_to_modify = Symbols::New(thread_, *name_to_modify);
|
| + }
|
| + return *name_to_modify;
|
| +}
|
| +
|
| +
|
| +const Array& TranslationHelper::ArgumentNames(List<NamedExpression>* named) {
|
| + if (named->length() == 0) return Array::ZoneHandle(Z);
|
| +
|
| + const Array& names = Array::ZoneHandle(Z, Array::New(named->length()));
|
| + for (intptr_t i = 0; i < named->length(); ++i) {
|
| + names.SetAt(i, DartSymbol((*named)[i]->name()));
|
| + }
|
| + return names;
|
| +}
|
| +
|
| +
|
| +Instance& ConstantEvaluator::EvaluateExpression(Expression* expression) {
|
| + expression->AcceptExpressionVisitor(this);
|
| + // We return a new `ZoneHandle` here on purpose: The intermediate language
|
| + // instructions do not make a copy of the handle, so we do it.
|
| + return dart::Instance::ZoneHandle(Z, result_.raw());
|
| +}
|
| +
|
| +
|
| +Object& ConstantEvaluator::EvaluateExpressionSafe(Expression* expression) {
|
| + LongJumpScope jump;
|
| + if (setjmp(*jump.Set()) == 0) {
|
| + return EvaluateExpression(expression);
|
| + } else {
|
| + Thread* thread = Thread::Current();
|
| + Error& error = Error::Handle(Z);
|
| + error = thread->sticky_error();
|
| + thread->clear_sticky_error();
|
| + return error;
|
| + }
|
| +}
|
| +
|
| +
|
| +Instance& ConstantEvaluator::EvaluateConstructorInvocation(
|
| + ConstructorInvocation* node) {
|
| + VisitConstructorInvocation(node);
|
| + // We return a new `ZoneHandle` here on purpose: The intermediate language
|
| + // instructions do not make a copy of the handle, so we do it.
|
| + return dart::Instance::ZoneHandle(Z, result_.raw());
|
| +}
|
| +
|
| +
|
| +Instance& ConstantEvaluator::EvaluateListLiteral(ListLiteral* node) {
|
| + VisitListLiteral(node);
|
| + // We return a new `ZoneHandle` here on purpose: The intermediate language
|
| + // instructions do not make a copy of the handle, so we do it.
|
| + return dart::Instance::ZoneHandle(Z, result_.raw());
|
| +}
|
| +
|
| +
|
| +Instance& ConstantEvaluator::EvaluateMapLiteral(MapLiteral* node) {
|
| + VisitMapLiteral(node);
|
| + // We return a new `ZoneHandle` here on purpose: The intermediate language
|
| + // instructions do not make a copy of the handle, so we do it.
|
| + return dart::Instance::ZoneHandle(Z, result_.raw());
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitBigintLiteral(BigintLiteral* node) {
|
| + const dart::String& value = H.DartString(node->value());
|
| + result_ = Integer::New(value, Heap::kOld);
|
| + result_ = H.Canonicalize(result_);
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitBoolLiteral(BoolLiteral* node) {
|
| + result_ = dart::Bool::Get(node->value()).raw();
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitDoubleLiteral(DoubleLiteral* node) {
|
| + result_ = dart::Double::New(H.DartString(node->value()), Heap::kOld);
|
| + result_ = H.Canonicalize(result_);
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitIntLiteral(IntLiteral* node) {
|
| + result_ = dart::Integer::New(node->value(), Heap::kOld);
|
| + result_ = H.Canonicalize(result_);
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitNullLiteral(NullLiteral* node) {
|
| + result_ = dart::Instance::null();
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitStringLiteral(StringLiteral* node) {
|
| + result_ = H.DartSymbol(node->value()).raw();
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitTypeLiteral(TypeLiteral* node) {
|
| + const AbstractType& type = T.TranslateType(node->type());
|
| + if (type.IsMalformed()) {
|
| + H.ReportError("Malformed type literal in constant expression.");
|
| + }
|
| + result_ = type.raw();
|
| +}
|
| +
|
| +
|
| +RawObject* ConstantEvaluator::EvaluateConstConstructorCall(
|
| + const dart::Class& type_class, const TypeArguments& type_arguments,
|
| + const Function& constructor, const Object& argument) {
|
| + // Factories have one extra argument: the type arguments.
|
| + // Constructors have 1 extra arguments: receiver.
|
| + const int kNumArgs = 1;
|
| + const int kNumExtraArgs = 1;
|
| + const int num_arguments = kNumArgs + kNumExtraArgs;
|
| + const Array& arg_values =
|
| + Array::Handle(Z, Array::New(num_arguments, Heap::kOld));
|
| + Instance& instance = Instance::Handle(Z);
|
| + if (!constructor.IsFactory()) {
|
| + instance = Instance::New(type_class, Heap::kOld);
|
| + if (!type_arguments.IsNull()) {
|
| + ASSERT(type_arguments.IsInstantiated());
|
| + instance.SetTypeArguments(
|
| + TypeArguments::Handle(Z, type_arguments.Canonicalize()));
|
| + }
|
| + arg_values.SetAt(0, instance);
|
| + } else {
|
| + // Prepend type_arguments to list of arguments to factory.
|
| + ASSERT(type_arguments.IsZoneHandle());
|
| + arg_values.SetAt(0, type_arguments);
|
| + }
|
| + arg_values.SetAt((0 + kNumExtraArgs), argument);
|
| + const Array& args_descriptor = Array::Handle(
|
| + Z, ArgumentsDescriptor::New(num_arguments, Object::empty_array()));
|
| + const Object& result = Object::Handle(
|
| + Z, DartEntry::InvokeFunction(constructor, arg_values, args_descriptor));
|
| + ASSERT(!result.IsError());
|
| + if (constructor.IsFactory()) {
|
| + // The factory method returns the allocated object.
|
| + instance ^= result.raw();
|
| + }
|
| + return H.Canonicalize(instance);
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitSymbolLiteral(SymbolLiteral* node) {
|
| + const dart::String& symbol_value = H.DartSymbol(node->value());
|
| +
|
| + const dart::Class& symbol_class =
|
| + dart::Class::ZoneHandle(Z, I->object_store()->symbol_class());
|
| + ASSERT(!symbol_class.IsNull());
|
| + const dart::Function& symbol_constructor = Function::ZoneHandle(
|
| + Z, symbol_class.LookupConstructor(Symbols::SymbolCtor()));
|
| + ASSERT(!symbol_constructor.IsNull());
|
| + result_ ^= EvaluateConstConstructorCall(
|
| + symbol_class, TypeArguments::Handle(Z), symbol_constructor, symbol_value);
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitListLiteral(ListLiteral* node) {
|
| + DartType* types[] = {node->type()};
|
| + const TypeArguments& type_arguments = T.TranslateTypeArguments(types, 1);
|
| +
|
| + intptr_t length = node->expressions().length();
|
| + const Array& const_list =
|
| + Array::ZoneHandle(Z, Array::New(length, Heap::kOld));
|
| + const_list.SetTypeArguments(type_arguments);
|
| + for (intptr_t i = 0; i < length; i++) {
|
| + const Instance& expression = EvaluateExpression(node->expressions()[i]);
|
| + const_list.SetAt(i, expression);
|
| + }
|
| + const_list.MakeImmutable();
|
| + result_ = H.Canonicalize(const_list);
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitMapLiteral(MapLiteral* node) {
|
| + DartType* types[] = {node->key_type(), node->value_type()};
|
| + const TypeArguments& type_arguments = T.TranslateTypeArguments(types, 2);
|
| +
|
| + intptr_t length = node->entries().length();
|
| +
|
| + Array& const_kv_array =
|
| + Array::ZoneHandle(Z, Array::New(2 * length, Heap::kOld));
|
| + for (intptr_t i = 0; i < length; i++) {
|
| + const_kv_array.SetAt(2 * i + 0,
|
| + EvaluateExpression(node->entries()[i]->key()));
|
| + const_kv_array.SetAt(2 * i + 1,
|
| + EvaluateExpression(node->entries()[i]->value()));
|
| + }
|
| +
|
| + const_kv_array.MakeImmutable();
|
| + const_kv_array ^= H.Canonicalize(const_kv_array);
|
| +
|
| + const dart::Class& map_class = dart::Class::Handle(
|
| + Z, dart::Library::LookupCoreClass(Symbols::ImmutableMap()));
|
| + ASSERT(!map_class.IsNull());
|
| + ASSERT(map_class.NumTypeArguments() == 2);
|
| +
|
| + const dart::Field& field = dart::Field::Handle(
|
| + Z, map_class.LookupInstanceFieldAllowPrivate(H.DartSymbol("_kvPairs")));
|
| + ASSERT(!field.IsNull());
|
| +
|
| + // NOTE: This needs to be kept in sync with `runtime/lib/immutable_map.dart`!
|
| + result_ = Instance::New(map_class, Heap::kOld);
|
| + ASSERT(!result_.IsNull());
|
| + result_.SetTypeArguments(type_arguments);
|
| + result_.SetField(field, const_kv_array);
|
| + result_ = H.Canonicalize(result_);
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitConstructorInvocation(
|
| + ConstructorInvocation* node) {
|
| + Arguments* kernel_arguments = node->arguments();
|
| +
|
| + const Function& constructor = Function::Handle(
|
| + Z, H.LookupConstructorByKernelConstructor(node->target()));
|
| + dart::Class& klass = dart::Class::Handle(Z, constructor.Owner());
|
| +
|
| + // Build the type arguments vector (if necessary).
|
| + const TypeArguments* type_arguments =
|
| + TranslateTypeArguments(constructor, &klass, kernel_arguments);
|
| +
|
| + // Prepare either the instance or the type argument vector for the constructor
|
| + // call.
|
| + Instance* receiver = NULL;
|
| + const TypeArguments* type_arguments_argument = NULL;
|
| + if (!constructor.IsFactory()) {
|
| + receiver = &Instance::ZoneHandle(Z, Instance::New(klass, Heap::kOld));
|
| + if (type_arguments != NULL) {
|
| + receiver->SetTypeArguments(*type_arguments);
|
| + }
|
| + } else {
|
| + type_arguments_argument = type_arguments;
|
| + }
|
| +
|
| + const Object& result = RunFunction(constructor, kernel_arguments, receiver,
|
| + type_arguments_argument);
|
| + if (constructor.IsFactory()) {
|
| + // Factories return the new object.
|
| + result_ ^= result.raw();
|
| + result_ = H.Canonicalize(result_);
|
| + } else {
|
| + ASSERT(!receiver->IsNull());
|
| + result_ = H.Canonicalize(*receiver);
|
| + }
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitMethodInvocation(MethodInvocation* node) {
|
| + Arguments* kernel_arguments = node->arguments();
|
| +
|
| + // Dart does not support generic methods yet.
|
| + ASSERT(kernel_arguments->types().length() == 0);
|
| +
|
| + const dart::Instance& receiver = EvaluateExpression(node->receiver());
|
| + dart::Class& klass = dart::Class::Handle(
|
| + Z, isolate_->class_table()->At(receiver.GetClassId()));
|
| + ASSERT(!klass.IsNull());
|
| +
|
| + // Search the superclass chain for the selector.
|
| + // TODO(27590): Can we assume this will never be a no-such-method error?
|
| + dart::Function& function = dart::Function::Handle(Z);
|
| + const dart::String& method_name = H.DartMethodName(node->name());
|
| + while (!klass.IsNull()) {
|
| + function = klass.LookupDynamicFunctionAllowPrivate(method_name);
|
| + if (!function.IsNull()) break;
|
| + klass = klass.SuperClass();
|
| + }
|
| + ASSERT(!function.IsNull());
|
| +
|
| + // Run the method and canonicalize the result.
|
| + const Object& result = RunFunction(function, kernel_arguments, &receiver);
|
| + result_ ^= result.raw();
|
| + result_ = H.Canonicalize(result_);
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitStaticGet(StaticGet* node) {
|
| + Member* member = node->target();
|
| + if (member->IsField()) {
|
| + Field* kernel_field = Field::Cast(member);
|
| + const dart::Field& field =
|
| + dart::Field::Handle(Z, H.LookupFieldByKernelField(kernel_field));
|
| + if (field.StaticValue() == Object::sentinel().raw() ||
|
| + field.StaticValue() == Object::transition_sentinel().raw()) {
|
| + field.EvaluateInitializer();
|
| + result_ = field.StaticValue();
|
| + result_ = H.Canonicalize(result_);
|
| + field.SetStaticValue(result_, true);
|
| + } else {
|
| + result_ = field.StaticValue();
|
| + }
|
| + } else if (member->IsProcedure()) {
|
| + Procedure* procedure = Procedure::Cast(member);
|
| + const Function& target = Function::ZoneHandle(
|
| + Z, H.LookupStaticMethodByKernelProcedure(procedure));
|
| +
|
| + if (procedure->kind() == Procedure::kMethod) {
|
| + ASSERT(procedure->IsStatic());
|
| + Function& closure_function =
|
| + Function::ZoneHandle(Z, target.ImplicitClosureFunction());
|
| + closure_function.set_kernel_function(target.kernel_function());
|
| + result_ = closure_function.ImplicitStaticClosure();
|
| + result_ = H.Canonicalize(result_);
|
| + } else if (procedure->kind() == Procedure::kGetter) {
|
| + UNIMPLEMENTED();
|
| + } else {
|
| + UNIMPLEMENTED();
|
| + }
|
| + }
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitVariableGet(VariableGet* node) {
|
| + // When we see a [VariableGet] the corresponding [VariableDeclaration] must've
|
| + // been executed already. It therefore must have a constant object associated
|
| + // with it.
|
| + LocalVariable* variable = builder_->LookupVariable(node->variable());
|
| + ASSERT(variable->IsConst());
|
| + result_ = variable->ConstValue()->raw();
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitLet(Let* node) {
|
| + VariableDeclaration* variable = node->variable();
|
| + LocalVariable* local = builder_->LookupVariable(variable);
|
| + local->SetConstValue(EvaluateExpression(variable->initializer()));
|
| + node->body()->AcceptExpressionVisitor(this);
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitStaticInvocation(StaticInvocation* node) {
|
| + const Function& function = Function::ZoneHandle(
|
| + Z, H.LookupStaticMethodByKernelProcedure(node->procedure()));
|
| + dart::Class& klass = dart::Class::Handle(Z, function.Owner());
|
| +
|
| + // Build the type arguments vector (if necessary).
|
| + const TypeArguments* type_arguments =
|
| + TranslateTypeArguments(function, &klass, node->arguments());
|
| +
|
| + const Object& result =
|
| + RunFunction(function, node->arguments(), NULL, type_arguments);
|
| + result_ ^= result.raw();
|
| + result_ = H.Canonicalize(result_);
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitStringConcatenation(StringConcatenation* node) {
|
| + intptr_t length = node->expressions().length();
|
| +
|
| + bool all_string = true;
|
| + const Array& strings = Array::Handle(Z, Array::New(length));
|
| + for (intptr_t i = 0; i < length; i++) {
|
| + EvaluateExpression(node->expressions()[i]);
|
| + strings.SetAt(i, result_);
|
| + all_string = all_string && result_.IsString();
|
| + }
|
| + if (all_string) {
|
| + result_ = dart::String::ConcatAll(strings, Heap::kOld);
|
| + result_ = H.Canonicalize(result_);
|
| + } else {
|
| + // Get string interpolation function.
|
| + const dart::Class& cls = dart::Class::Handle(
|
| + Z, dart::Library::LookupCoreClass(Symbols::StringBase()));
|
| + ASSERT(!cls.IsNull());
|
| + const Function& func = Function::Handle(
|
| + Z, cls.LookupStaticFunction(
|
| + dart::Library::PrivateCoreLibName(Symbols::Interpolate())));
|
| + ASSERT(!func.IsNull());
|
| +
|
| + // Build argument array to pass to the interpolation function.
|
| + const Array& interpolate_arg = Array::Handle(Z, Array::New(1, Heap::kOld));
|
| + interpolate_arg.SetAt(0, strings);
|
| +
|
| + // Run and canonicalize.
|
| + const Object& result =
|
| + RunFunction(func, interpolate_arg, Array::null_array());
|
| + result_ = H.Canonicalize(dart::String::Cast(result));
|
| + }
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitConditionalExpression(
|
| + ConditionalExpression* node) {
|
| + EvaluateExpression(node->condition());
|
| + if (Bool::Cast(result_).value()) {
|
| + EvaluateExpression(node->then());
|
| + } else {
|
| + EvaluateExpression(node->otherwise());
|
| + }
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitLogicalExpression(LogicalExpression* node) {
|
| + if (node->op() == LogicalExpression::kAnd) {
|
| + EvaluateExpression(node->left());
|
| + if (Bool::Cast(result_).value()) {
|
| + EvaluateExpression(node->right());
|
| + }
|
| + } else {
|
| + ASSERT(node->op() == LogicalExpression::kOr);
|
| + EvaluateExpression(node->left());
|
| + if (!Bool::Cast(result_).value()) {
|
| + EvaluateExpression(node->right());
|
| + }
|
| + }
|
| +}
|
| +
|
| +
|
| +void ConstantEvaluator::VisitNot(Not* node) {
|
| + EvaluateExpression(node->expression());
|
| + ASSERT(result_.IsBool());
|
| + result_ =
|
| + Bool::Cast(result_).value() ? Bool::False().raw() : Bool::True().raw();
|
| +}
|
| +
|
| +
|
| +const TypeArguments* ConstantEvaluator::TranslateTypeArguments(
|
| + const Function& target, dart::Class* target_klass,
|
| + Arguments* kernel_arguments) {
|
| + List<DartType>& kernel_type_arguments = kernel_arguments->types();
|
| +
|
| + const TypeArguments* type_arguments = NULL;
|
| + if (kernel_type_arguments.length() > 0) {
|
| + type_arguments = &T.TranslateInstantiatedTypeArguments(
|
| + *target_klass, kernel_type_arguments.raw_array(),
|
| + kernel_type_arguments.length());
|
| +
|
| + if (!(type_arguments->IsNull() || type_arguments->IsInstantiated())) {
|
| + H.ReportError("Type must be constant in const constructor.");
|
| + }
|
| + } else if (target.IsFactory() && type_arguments == NULL) {
|
| + // All factories take a type arguments vector as first argument (independent
|
| + // of whether the class is generic or not).
|
| + type_arguments = &TypeArguments::ZoneHandle(Z, TypeArguments::null());
|
| + }
|
| + return type_arguments;
|
| +}
|
| +
|
| +
|
| +const Object& ConstantEvaluator::RunFunction(const Function& function,
|
| + Arguments* kernel_arguments,
|
| + const Instance* receiver,
|
| + const TypeArguments* type_args) {
|
| + // We do not support generic methods yet.
|
| + ASSERT((receiver == NULL) || (type_args == NULL));
|
| + intptr_t extra_arguments =
|
| + (receiver != NULL ? 1 : 0) + (type_args != NULL ? 1 : 0);
|
| +
|
| + // Build up arguments.
|
| + const Array& arguments = Array::ZoneHandle(
|
| + Z, Array::New(extra_arguments + kernel_arguments->count()));
|
| + const Array& names =
|
| + Array::ZoneHandle(Z, Array::New(kernel_arguments->named().length()));
|
| + intptr_t pos = 0;
|
| + if (receiver != NULL) {
|
| + arguments.SetAt(pos++, *receiver);
|
| + }
|
| + if (type_args != NULL) {
|
| + arguments.SetAt(pos++, *type_args);
|
| + }
|
| + for (intptr_t i = 0; i < kernel_arguments->positional().length(); i++) {
|
| + EvaluateExpression(kernel_arguments->positional()[i]);
|
| + arguments.SetAt(pos++, result_);
|
| + }
|
| + for (intptr_t i = 0; i < kernel_arguments->named().length(); i++) {
|
| + NamedExpression* named_expression = kernel_arguments->named()[i];
|
| + EvaluateExpression(named_expression->expression());
|
| + arguments.SetAt(pos++, result_);
|
| + names.SetAt(i, H.DartSymbol(named_expression->name()));
|
| + }
|
| + return RunFunction(function, arguments, names);
|
| +}
|
| +
|
| +
|
| +const Object& ConstantEvaluator::RunFunction(const Function& function,
|
| + const Array& arguments,
|
| + const Array& names) {
|
| + const Array& args_descriptor =
|
| + Array::Handle(Z, ArgumentsDescriptor::New(arguments.Length(), names));
|
| + const Object& result = Object::Handle(
|
| + Z, DartEntry::InvokeFunction(function, arguments, args_descriptor));
|
| + if (result.IsError()) {
|
| + H.ReportError(Error::Cast(result), "error evaluating constant constructor");
|
| + }
|
| + return result;
|
| +}
|
| +
|
| +
|
| +FlowGraphBuilder::FlowGraphBuilder(
|
| + TreeNode* node, ParsedFunction* parsed_function,
|
| + const ZoneGrowableArray<const ICData*>& ic_data_array,
|
| + InlineExitCollector* exit_collector, intptr_t osr_id,
|
| + intptr_t first_block_id)
|
| + : zone_(Thread::Current()->zone()),
|
| + translation_helper_(Thread::Current(), zone_,
|
| + Thread::Current()->isolate()),
|
| + node_(node),
|
| + parsed_function_(parsed_function),
|
| + osr_id_(osr_id),
|
| + ic_data_array_(ic_data_array),
|
| + exit_collector_(exit_collector),
|
| + next_block_id_(first_block_id),
|
| + next_function_id_(0),
|
| + context_depth_(0),
|
| + loop_depth_(0),
|
| + try_depth_(0),
|
| + catch_depth_(0),
|
| + for_in_depth_(0),
|
| + stack_(NULL),
|
| + pending_argument_count_(0),
|
| + graph_entry_(NULL),
|
| + scopes_(NULL),
|
| + breakable_block_(NULL),
|
| + switch_block_(NULL),
|
| + try_finally_block_(NULL),
|
| + try_catch_block_(NULL),
|
| + next_used_try_index_(0),
|
| + catch_block_(NULL),
|
| + type_translator_(&translation_helper_, &active_class_),
|
| + constant_evaluator_(this, zone_, &translation_helper_,
|
| + &type_translator_) {}
|
| +
|
| +
|
| +FlowGraphBuilder::~FlowGraphBuilder() {}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::TranslateFinallyFinalizers(
|
| + TryFinallyBlock* outer_finally, intptr_t target_context_depth) {
|
| + TryFinallyBlock* const saved_block = try_finally_block_;
|
| + const intptr_t saved_depth = context_depth_;
|
| + const intptr_t saved_try_depth = try_depth_;
|
| +
|
| + Fragment instructions;
|
| +
|
| + // While translating the body of a finalizer we need to set the try-finally
|
| + // block which is active when translating the body.
|
| + while (try_finally_block_ != outer_finally) {
|
| + // Set correct try depth (in case there are nested try statements).
|
| + try_depth_ = try_finally_block_->try_depth();
|
| +
|
| + // Potentially restore the context to what is expected for the finally
|
| + // block.
|
| + instructions += AdjustContextTo(try_finally_block_->context_depth());
|
| +
|
| + Statement* finalizer = try_finally_block_->finalizer();
|
| + try_finally_block_ = try_finally_block_->outer();
|
| +
|
| + // This will potentially have exceptional cases as described in
|
| + // [VisitTryFinally] and will handle them.
|
| + instructions += TranslateStatement(finalizer);
|
| +
|
| + // We only need to make sure that if the finalizer ended normally, we
|
| + // continue towards the next outer try-finally.
|
| + if (!instructions.is_open()) break;
|
| + }
|
| +
|
| + if (instructions.is_open() && target_context_depth != -1) {
|
| + // A target context depth of -1 indicates that we the code after this
|
| + // will not care about the context chain so we can leave it any way we
|
| + // want after the last finalizer. That is used when returning.
|
| + instructions += AdjustContextTo(target_context_depth);
|
| + }
|
| +
|
| + try_finally_block_ = saved_block;
|
| + context_depth_ = saved_depth;
|
| + try_depth_ = saved_try_depth;
|
| +
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::EnterScope(TreeNode* node, bool* new_context) {
|
| + Fragment instructions;
|
| + const intptr_t context_size =
|
| + scopes_->scopes.Lookup(node)->num_context_variables();
|
| + if (context_size > 0) {
|
| + instructions += PushContext(context_size);
|
| + instructions += Drop();
|
| + if (new_context != NULL) {
|
| + *new_context = true;
|
| + }
|
| + }
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::ExitScope(TreeNode* node) {
|
| + Fragment instructions;
|
| + const intptr_t context_size =
|
| + scopes_->scopes.Lookup(node)->num_context_variables();
|
| + if (context_size > 0) {
|
| + instructions += PopContext();
|
| + }
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::LoadContextAt(int depth) {
|
| + intptr_t delta = context_depth_ - depth;
|
| + ASSERT(delta >= 0);
|
| + Fragment instructions = LoadLocal(parsed_function_->current_context_var());
|
| + while (delta-- > 0) {
|
| + instructions += LoadField(Context::parent_offset());
|
| + }
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::AdjustContextTo(int depth) {
|
| + ASSERT(depth <= context_depth_ && depth >= 0);
|
| + Fragment instructions;
|
| + if (depth < context_depth_) {
|
| + instructions += LoadContextAt(depth);
|
| + instructions += StoreLocal(parsed_function_->current_context_var());
|
| + instructions += Drop();
|
| + context_depth_ = depth;
|
| + }
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::PushContext(int size) {
|
| + ASSERT(size > 0);
|
| + Fragment instructions = AllocateContext(size);
|
| + LocalVariable* context = MakeTemporary();
|
| + instructions += LoadLocal(context);
|
| + instructions += LoadLocal(parsed_function_->current_context_var());
|
| + instructions += StoreInstanceField(Context::parent_offset());
|
| + instructions += StoreLocal(parsed_function_->current_context_var());
|
| + ++context_depth_;
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::PopContext() {
|
| + return AdjustContextTo(context_depth_ - 1);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::LoadInstantiatorTypeArguments() {
|
| + // TODO(27590): We could use `active_class_->IsGeneric()`.
|
| + Fragment instructions;
|
| + if (scopes_->type_arguments_variable != NULL) {
|
| +#ifdef DEBUG
|
| + Function& function =
|
| + Function::Handle(Z, parsed_function_->function().raw());
|
| + while (function.IsClosureFunction()) {
|
| + function = function.parent_function();
|
| + }
|
| + ASSERT(function.IsFactory());
|
| +#endif
|
| + instructions += LoadLocal(scopes_->type_arguments_variable);
|
| + } else if (scopes_->this_variable != NULL &&
|
| + active_class_.kernel_class != NULL &&
|
| + active_class_.kernel_class->type_parameters().length() > 0) {
|
| + ASSERT(!parsed_function_->function().IsFactory());
|
| + intptr_t type_arguments_field_offset =
|
| + active_class_.klass->type_arguments_field_offset();
|
| + ASSERT(type_arguments_field_offset != dart::Class::kNoTypeArguments);
|
| +
|
| + instructions += LoadLocal(scopes_->this_variable);
|
| + instructions += LoadField(type_arguments_field_offset);
|
| + } else {
|
| + instructions += NullConstant();
|
| + }
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::InstantiateTypeArguments(
|
| + const TypeArguments& type_arguments) {
|
| + InstantiateTypeArgumentsInstr* instr = new (Z) InstantiateTypeArgumentsInstr(
|
| + TokenPosition::kNoSource, type_arguments, *active_class_.klass, Pop());
|
| + Push(instr);
|
| + return Fragment(instr);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::TranslateInstantiatedTypeArguments(
|
| + const TypeArguments& type_arguments) {
|
| + Fragment instructions;
|
| +
|
| + if (type_arguments.IsNull() || type_arguments.IsInstantiated()) {
|
| + // There are no type references to type parameters so we can just take it.
|
| + instructions += Constant(type_arguments);
|
| + } else {
|
| + // The [type_arguments] vector contains a type reference to a type
|
| + // parameter we need to resolve it.
|
| + const bool use_instantiator =
|
| + type_arguments.IsUninstantiatedIdentity() ||
|
| + type_arguments.CanShareInstantiatorTypeArguments(*active_class_.klass);
|
| + if (use_instantiator) {
|
| + // If the instantiator type arguments are just passed on, we don't need to
|
| + // resolve the type parameters.
|
| + //
|
| + // This is for example the case here:
|
| + // class Foo<T> {
|
| + // newList() => new List<T>();
|
| + // }
|
| + // We just use the type argument vector from the [Foo] object and pass it
|
| + // directly to the `new List<T>()` factory constructor.
|
| + instructions += LoadInstantiatorTypeArguments();
|
| + } else {
|
| + // Otherwise we need to resolve [TypeParameterType]s in the type
|
| + // expression based on the current instantiator type argument vector.
|
| + instructions += LoadInstantiatorTypeArguments();
|
| + instructions += InstantiateTypeArguments(type_arguments);
|
| + }
|
| + }
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::AllocateContext(int size) {
|
| + AllocateContextInstr* allocate =
|
| + new (Z) AllocateContextInstr(TokenPosition::kNoSource, size);
|
| + Push(allocate);
|
| + return Fragment(allocate);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::AllocateObject(const dart::Class& klass,
|
| + intptr_t argument_count) {
|
| + ArgumentArray arguments = GetArguments(argument_count);
|
| + AllocateObjectInstr* allocate =
|
| + new (Z) AllocateObjectInstr(TokenPosition::kNoSource, klass, arguments);
|
| + Push(allocate);
|
| + return Fragment(allocate);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::AllocateObject(const dart::Class& klass,
|
| + const Function& closure_function) {
|
| + ArgumentArray arguments = new (Z) ZoneGrowableArray<PushArgumentInstr*>(Z, 0);
|
| + AllocateObjectInstr* allocate =
|
| + new (Z) AllocateObjectInstr(TokenPosition::kNoSource, klass, arguments);
|
| + allocate->set_closure_function(closure_function);
|
| + Push(allocate);
|
| + return Fragment(allocate);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::BooleanNegate() {
|
| + BooleanNegateInstr* negate = new (Z) BooleanNegateInstr(Pop());
|
| + Push(negate);
|
| + return Fragment(negate);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::StrictCompare(Token::Kind kind,
|
| + bool number_check /* = false */) {
|
| + Value* right = Pop();
|
| + Value* left = Pop();
|
| + StrictCompareInstr* compare = new (Z) StrictCompareInstr(
|
| + TokenPosition::kNoSource, kind, left, right, number_check);
|
| + Push(compare);
|
| + return Fragment(compare);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::BranchIfTrue(TargetEntryInstr** then_entry,
|
| + TargetEntryInstr** otherwise_entry,
|
| + bool negate) {
|
| + Fragment instructions = Constant(Bool::True());
|
| + return instructions + BranchIfEqual(then_entry, otherwise_entry, negate);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::BranchIfNull(TargetEntryInstr** then_entry,
|
| + TargetEntryInstr** otherwise_entry,
|
| + bool negate) {
|
| + Fragment instructions = NullConstant();
|
| + return instructions + BranchIfEqual(then_entry, otherwise_entry, negate);
|
| +}
|
| +
|
| +Fragment FlowGraphBuilder::BranchIfEqual(TargetEntryInstr** then_entry,
|
| + TargetEntryInstr** otherwise_entry,
|
| + bool negate) {
|
| + Value* right_value = Pop();
|
| + Value* left_value = Pop();
|
| + StrictCompareInstr* compare = new (Z) StrictCompareInstr(
|
| + TokenPosition::kNoSource, negate ? Token::kNE_STRICT : Token::kEQ_STRICT,
|
| + left_value, right_value, false);
|
| + BranchInstr* branch = new (Z) BranchInstr(compare);
|
| + *then_entry = *branch->true_successor_address() = BuildTargetEntry();
|
| + *otherwise_entry = *branch->false_successor_address() = BuildTargetEntry();
|
| + return Fragment(branch).closed();
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::BranchIfStrictEqual(
|
| + TargetEntryInstr** then_entry, TargetEntryInstr** otherwise_entry) {
|
| + Value* rhs = Pop();
|
| + Value* lhs = Pop();
|
| + StrictCompareInstr* compare = new (Z) StrictCompareInstr(
|
| + TokenPosition::kNoSource, Token::kEQ_STRICT, lhs, rhs, false);
|
| + BranchInstr* branch = new (Z) BranchInstr(compare);
|
| + *then_entry = *branch->true_successor_address() = BuildTargetEntry();
|
| + *otherwise_entry = *branch->false_successor_address() = BuildTargetEntry();
|
| + return Fragment(branch).closed();
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::CatchBlockEntry(const Array& handler_types,
|
| + intptr_t handler_index) {
|
| + ASSERT(CurrentException()->is_captured() ==
|
| + CurrentStackTrace()->is_captured());
|
| + const bool should_restore_closure_context =
|
| + CurrentException()->is_captured() ||
|
| + CurrentCatchContext()->is_captured();
|
| + CatchBlockEntryInstr* entry = new (Z) CatchBlockEntryInstr(
|
| + AllocateBlockId(), CurrentTryIndex(), graph_entry_, handler_types,
|
| + handler_index, *CurrentException(), *CurrentStackTrace(),
|
| + /* needs_stacktrace = */ true, Thread::Current()->GetNextDeoptId(),
|
| + should_restore_closure_context);
|
| + graph_entry_->AddCatchEntry(entry);
|
| + Fragment instructions(entry);
|
| +
|
| + // :saved_try_context_var can be captured in the context of
|
| + // of the closure, in this case CatchBlockEntryInstr restores
|
| + // :current_context_var to point to closure context in the
|
| + // same way as normal function prologue does.
|
| + // Update current context depth to reflect that.
|
| + const intptr_t saved_context_depth = context_depth_;
|
| + ASSERT(!CurrentCatchContext()->is_captured() ||
|
| + CurrentCatchContext()->owner()->context_level() == 0);
|
| + context_depth_ = 0;
|
| + instructions += LoadLocal(CurrentCatchContext());
|
| + instructions += StoreLocal(parsed_function_->current_context_var());
|
| + instructions += Drop();
|
| + context_depth_ = saved_context_depth;
|
| +
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::TryCatch(int try_handler_index) {
|
| + // The body of the try needs to have it's own block in order to get a new try
|
| + // index.
|
| + //
|
| + // => We therefore create a block for the body (fresh try index) and another
|
| + // join block (with current try index).
|
| + Fragment body;
|
| + JoinEntryInstr* entry =
|
| + new (Z) JoinEntryInstr(AllocateBlockId(), try_handler_index);
|
| + body += LoadLocal(parsed_function_->current_context_var());
|
| + body += StoreLocal(CurrentCatchContext());
|
| + body += Drop();
|
| + body += Goto(entry);
|
| + return Fragment(body.entry, entry);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::CheckStackOverflowInPrologue() {
|
| + if (IsInlining()) {
|
| + // If we are inlining don't actually attach the stack check. We must still
|
| + // create the stack check in order to allocate a deopt id.
|
| + CheckStackOverflow();
|
| + return Fragment();
|
| + }
|
| + return CheckStackOverflow();
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::CheckStackOverflow() {
|
| + return Fragment(
|
| + new (Z) CheckStackOverflowInstr(TokenPosition::kNoSource, loop_depth_));
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::CloneContext() {
|
| + LocalVariable* context_variable = parsed_function_->current_context_var();
|
| +
|
| + Fragment instructions = LoadLocal(context_variable);
|
| +
|
| + CloneContextInstr* clone_instruction =
|
| + new (Z) CloneContextInstr(TokenPosition::kNoSource, Pop());
|
| + instructions <<= clone_instruction;
|
| + Push(clone_instruction);
|
| +
|
| + instructions += StoreLocal(context_variable);
|
| + instructions += Drop();
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::Constant(const Object& value) {
|
| + ASSERT(value.IsNotTemporaryScopedHandle());
|
| + ConstantInstr* constant = new (Z) ConstantInstr(value);
|
| + Push(constant);
|
| + return Fragment(constant);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::CreateArray() {
|
| + Value* element_count = Pop();
|
| + CreateArrayInstr* array = new (Z) CreateArrayInstr(TokenPosition::kNoSource,
|
| + Pop(), // Element type.
|
| + element_count);
|
| + Push(array);
|
| + return Fragment(array);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::Goto(JoinEntryInstr* destination) {
|
| + return Fragment(new (Z) GotoInstr(destination)).closed();
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::IntConstant(int64_t value) {
|
| + return Fragment(
|
| + Constant(Integer::ZoneHandle(Z, Integer::New(value, Heap::kOld))));
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::InstanceCall(const dart::String& name,
|
| + Token::Kind kind,
|
| + intptr_t argument_count,
|
| + intptr_t num_args_checked) {
|
| + return InstanceCall(name, kind, argument_count, Array::null_array(),
|
| + num_args_checked);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::InstanceCall(const dart::String& name,
|
| + Token::Kind kind,
|
| + intptr_t argument_count,
|
| + const Array& argument_names,
|
| + intptr_t num_args_checked) {
|
| + ArgumentArray arguments = GetArguments(argument_count);
|
| + InstanceCallInstr* call = new (Z)
|
| + InstanceCallInstr(TokenPosition::kNoSource, name, kind, arguments,
|
| + argument_names, num_args_checked, ic_data_array_);
|
| + Push(call);
|
| + return Fragment(call);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::ClosureCall(int argument_count,
|
| + const Array& argument_names) {
|
| + Value* function = Pop();
|
| + ArgumentArray arguments = GetArguments(argument_count);
|
| + ClosureCallInstr* call = new (Z) ClosureCallInstr(
|
| + function, arguments, argument_names, TokenPosition::kNoSource);
|
| + Push(call);
|
| + return Fragment(call);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::ThrowException() {
|
| + Fragment instructions;
|
| + instructions += Drop();
|
| + instructions +=
|
| + Fragment(new (Z) ThrowInstr(TokenPosition::kNoSource)).closed();
|
| + // Use it's side effect of leaving a constant on the stack (does not change
|
| + // the graph).
|
| + NullConstant();
|
| +
|
| + pending_argument_count_ -= 1;
|
| +
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::RethrowException(int catch_try_index) {
|
| + Fragment instructions;
|
| + instructions += Drop();
|
| + instructions += Drop();
|
| + instructions +=
|
| + Fragment(new (Z) ReThrowInstr(TokenPosition::kNoSource, catch_try_index))
|
| + .closed();
|
| + // Use it's side effect of leaving a constant on the stack (does not change
|
| + // the graph).
|
| + NullConstant();
|
| +
|
| + pending_argument_count_ -= 2;
|
| +
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::LoadClassId() {
|
| + LoadClassIdInstr* load = new (Z) LoadClassIdInstr(Pop());
|
| + Push(load);
|
| + return Fragment(load);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::LoadField(const dart::Field& field) {
|
| + LoadFieldInstr* load = new (Z)
|
| + LoadFieldInstr(Pop(), &field, AbstractType::ZoneHandle(Z, field.type()),
|
| + TokenPosition::kNoSource);
|
| + Push(load);
|
| + return Fragment(load);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::LoadField(intptr_t offset, intptr_t class_id) {
|
| + LoadFieldInstr* load = new (Z) LoadFieldInstr(
|
| + Pop(), offset, AbstractType::ZoneHandle(Z), TokenPosition::kNoSource);
|
| + load->set_result_cid(class_id);
|
| + Push(load);
|
| + return Fragment(load);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::LoadNativeField(MethodRecognizer::Kind kind,
|
| + intptr_t offset, const Type& type,
|
| + intptr_t class_id,
|
| + bool is_immutable) {
|
| + LoadFieldInstr* load =
|
| + new (Z) LoadFieldInstr(Pop(), offset, type, TokenPosition::kNoSource);
|
| + load->set_recognized_kind(kind);
|
| + load->set_result_cid(class_id);
|
| + load->set_is_immutable(is_immutable);
|
| + Push(load);
|
| + return Fragment(load);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::LoadLocal(LocalVariable* variable) {
|
| + Fragment instructions;
|
| + if (variable->is_captured()) {
|
| + instructions += LoadContextAt(variable->owner()->context_level());
|
| + instructions += LoadField(Context::variable_offset(variable->index()));
|
| + } else {
|
| + LoadLocalInstr* load =
|
| + new (Z) LoadLocalInstr(*variable, TokenPosition::kNoSource);
|
| + instructions <<= load;
|
| + Push(load);
|
| + }
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::InitStaticField(const dart::Field& field) {
|
| + InitStaticFieldInstr* init = new (Z) InitStaticFieldInstr(Pop(), field);
|
| + return Fragment(init);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::LoadStaticField() {
|
| + LoadStaticFieldInstr* load =
|
| + new (Z) LoadStaticFieldInstr(Pop(), TokenPosition::kNoSource);
|
| + Push(load);
|
| + return Fragment(load);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::NullConstant() {
|
| + return Constant(Instance::ZoneHandle(Z, Instance::null()));
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::NativeCall(const dart::String* name,
|
| + const Function* function) {
|
| + InlineBailout("kernel::FlowGraphBuilder::NativeCall");
|
| + NativeCallInstr* call = new (Z) NativeCallInstr(
|
| + name, function, FLAG_link_natives_lazily, TokenPosition::kNoSource);
|
| + Push(call);
|
| + return Fragment(call);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::PushArgument() {
|
| + PushArgumentInstr* argument = new (Z) PushArgumentInstr(Pop());
|
| + Push(argument);
|
| +
|
| + argument->set_temp_index(argument->temp_index() - 1);
|
| + ++pending_argument_count_;
|
| +
|
| + return Fragment(argument);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::Return() {
|
| + Value* value = Pop();
|
| + ASSERT(stack_ == NULL);
|
| + ReturnInstr* return_instr =
|
| + new (Z) ReturnInstr(TokenPosition::kNoSource, value);
|
| + if (exit_collector_ != NULL) exit_collector_->AddExit(return_instr);
|
| + return Fragment(return_instr).closed();
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::StaticCall(const Function& target,
|
| + intptr_t argument_count) {
|
| + return StaticCall(target, argument_count, Array::null_array());
|
| +}
|
| +
|
| +
|
| +static intptr_t GetResultCidOfListFactory(Zone* zone,
|
| + const Function& function,
|
| + intptr_t argument_count) {
|
| + if (!function.IsFactory()) {
|
| + return kDynamicCid;
|
| + }
|
| +
|
| + const dart::Class& owner = dart::Class::Handle(zone, function.Owner());
|
| + if ((owner.library() != dart::Library::CoreLibrary()) &&
|
| + (owner.library() != dart::Library::TypedDataLibrary())) {
|
| + return kDynamicCid;
|
| + }
|
| +
|
| + if ((owner.Name() == Symbols::List().raw()) &&
|
| + (function.name() == Symbols::ListFactory().raw())) {
|
| + ASSERT(argument_count == 1 || argument_count == 2);
|
| + return (argument_count == 1) ? kGrowableObjectArrayCid : kArrayCid;
|
| + }
|
| + return FactoryRecognizer::ResultCid(function);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::StaticCall(const Function& target,
|
| + intptr_t argument_count,
|
| + const Array& argument_names) {
|
| + ArgumentArray arguments = GetArguments(argument_count);
|
| + StaticCallInstr* call =
|
| + new (Z) StaticCallInstr(TokenPosition::kNoSource, target, argument_names,
|
| + arguments, ic_data_array_);
|
| + const intptr_t list_cid =
|
| + GetResultCidOfListFactory(Z, target, argument_count);
|
| + if (list_cid != kDynamicCid) {
|
| + call->set_result_cid(list_cid);
|
| + call->set_is_known_list_constructor(true);
|
| + } else if (target.recognized_kind() != MethodRecognizer::kUnknown) {
|
| + call->set_result_cid(MethodRecognizer::ResultCid(target));
|
| + }
|
| + Push(call);
|
| + return Fragment(call);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::StoreIndexed(intptr_t class_id) {
|
| + Value* value = Pop();
|
| + Value* index = Pop();
|
| + // TODO(27590): Omit store barrier when possible (e.g., storing
|
| + // some constants).
|
| + StoreIndexedInstr* store = new (Z) StoreIndexedInstr(
|
| + Pop(), // Array.
|
| + index, value, kEmitStoreBarrier, Instance::ElementSizeFor(class_id),
|
| + class_id, Thread::kNoDeoptId, TokenPosition::kNoSource);
|
| + Push(store);
|
| + return Fragment(store);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::StoreInstanceField(const dart::Field& field) {
|
| + Value* value = Pop();
|
| + // TODO(27590): Omit store barrier when possible (e.g., storing
|
| + // some constants).
|
| + StoreInstanceFieldInstr* store = new (Z) StoreInstanceFieldInstr(
|
| + field, Pop(), value, kEmitStoreBarrier, TokenPosition::kNoSource);
|
| + return Fragment(store);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::StoreInstanceField(intptr_t offset) {
|
| + Value* value = Pop();
|
| + StoreInstanceFieldInstr* store = new (Z) StoreInstanceFieldInstr(
|
| + offset, Pop(), value, kEmitStoreBarrier, TokenPosition::kNoSource);
|
| + return Fragment(store);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::StoreLocal(LocalVariable* variable) {
|
| + Fragment instructions;
|
| + if (variable->is_captured()) {
|
| + LocalVariable* value = MakeTemporary();
|
| + instructions += LoadContextAt(variable->owner()->context_level());
|
| + instructions += LoadLocal(value);
|
| + instructions +=
|
| + StoreInstanceField(Context::variable_offset(variable->index()));
|
| + } else {
|
| + StoreLocalInstr* store =
|
| + new (Z) StoreLocalInstr(*variable, Pop(), TokenPosition::kNoSource);
|
| + instructions <<= store;
|
| + Push(store);
|
| + }
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::StoreStaticField(const dart::Field& field) {
|
| + return Fragment(
|
| + new (Z) StoreStaticFieldInstr(field, Pop(), TokenPosition::kNoSource));
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::StringInterpolate() {
|
| + Value* array = Pop();
|
| + StringInterpolateInstr* interpolate =
|
| + new (Z) StringInterpolateInstr(array, TokenPosition::kNoSource);
|
| + Push(interpolate);
|
| + return Fragment(interpolate);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::ThrowTypeError() {
|
| + const dart::Class& klass = dart::Class::ZoneHandle(
|
| + Z, dart::Library::LookupCoreClass(Symbols::TypeError()));
|
| + ASSERT(!klass.IsNull());
|
| + const dart::Function& constructor = dart::Function::ZoneHandle(
|
| + Z,
|
| + klass.LookupConstructorAllowPrivate(H.DartSymbol("_TypeError._create")));
|
| + ASSERT(!constructor.IsNull());
|
| +
|
| + const dart::String& url = H.DartString(
|
| + parsed_function_->function().ToLibNamePrefixedQualifiedCString(),
|
| + Heap::kOld);
|
| +
|
| + Fragment instructions;
|
| +
|
| + // Create instance of _FallThroughError
|
| + instructions += AllocateObject(klass, 0);
|
| + LocalVariable* instance = MakeTemporary();
|
| +
|
| + // Call _AssertionError._create constructor.
|
| + instructions += LoadLocal(instance);
|
| + instructions += PushArgument(); // this
|
| +
|
| + instructions += Constant(url);
|
| + instructions += PushArgument(); // url
|
| +
|
| + instructions += NullConstant();
|
| + instructions += PushArgument(); // line
|
| +
|
| + instructions += IntConstant(0);
|
| + instructions += PushArgument(); // column
|
| +
|
| + instructions += Constant(H.DartSymbol("Malformed type."));
|
| + instructions += PushArgument(); // message
|
| +
|
| + instructions += StaticCall(constructor, 5);
|
| + instructions += Drop();
|
| +
|
| + // Throw the exception
|
| + instructions += PushArgument();
|
| + instructions += ThrowException();
|
| +
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::ThrowNoSuchMethodError() {
|
| + const dart::Class& klass = dart::Class::ZoneHandle(
|
| + Z, dart::Library::LookupCoreClass(Symbols::NoSuchMethodError()));
|
| + ASSERT(!klass.IsNull());
|
| + const dart::Function& throw_function = dart::Function::ZoneHandle(
|
| + Z, klass.LookupStaticFunctionAllowPrivate(Symbols::ThrowNew()));
|
| + ASSERT(!throw_function.IsNull());
|
| +
|
| + Fragment instructions;
|
| +
|
| + // Call NoSuchMethodError._throwNew static function.
|
| + instructions += NullConstant();
|
| + instructions += PushArgument(); // receiver
|
| +
|
| + instructions += Constant(H.DartString("<unknown>", Heap::kOld));
|
| + instructions += PushArgument(); // memberName
|
| +
|
| + instructions += IntConstant(-1);
|
| + instructions += PushArgument(); // invocation_type
|
| +
|
| + instructions += NullConstant();
|
| + instructions += PushArgument(); // arguments
|
| +
|
| + instructions += NullConstant();
|
| + instructions += PushArgument(); // argumentNames
|
| +
|
| + instructions += NullConstant();
|
| + instructions += PushArgument(); // existingArgumentNames
|
| +
|
| + instructions += StaticCall(throw_function, 6);
|
| + // Leave "result" on the stack since callers expect it to be there (even
|
| + // though the function will result in an exception).
|
| +
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +dart::RawFunction* FlowGraphBuilder::LookupMethodByMember(
|
| + Member* target, const dart::String& method_name) {
|
| + Class* kernel_klass = Class::Cast(target->parent());
|
| + dart::Class& klass =
|
| + dart::Class::Handle(Z, H.LookupClassByKernelClass(kernel_klass));
|
| +
|
| + dart::RawFunction* function = klass.LookupFunctionAllowPrivate(method_name);
|
| + ASSERT(function != Object::null());
|
| + return function;
|
| +}
|
| +
|
| +
|
| +LocalVariable* FlowGraphBuilder::MakeTemporary() {
|
| + char name[64];
|
| + intptr_t index = stack_->definition()->temp_index();
|
| + OS::SNPrint(name, 64, ":temp%" Pd, index);
|
| + LocalVariable* variable = new (Z) LocalVariable(
|
| + TokenPosition::kNoSource, H.DartSymbol(name), Object::dynamic_type());
|
| + // Set the index relative to the base of the expression stack including
|
| + // outgoing arguments.
|
| + variable->set_index(parsed_function_->first_stack_local_index() -
|
| + parsed_function_->num_stack_locals() -
|
| + pending_argument_count_ - index);
|
| +
|
| + // The value has uses as if it were a local variable. Mark the definition
|
| + // as used so that its temp index will not be cleared (causing it to never
|
| + // be materialized in the expression stack).
|
| + stack_->definition()->set_ssa_temp_index(0);
|
| +
|
| + return variable;
|
| +}
|
| +
|
| +
|
| +intptr_t FlowGraphBuilder::CurrentTryIndex() {
|
| + if (try_catch_block_ == NULL) {
|
| + return CatchClauseNode::kInvalidTryIndex;
|
| + } else {
|
| + return try_catch_block_->TryIndex();
|
| + }
|
| +}
|
| +
|
| +
|
| +dart::LocalVariable* FlowGraphBuilder::LookupVariable(
|
| + VariableDeclaration* var) {
|
| + LocalVariable* local = scopes_->locals.Lookup(var);
|
| + ASSERT(local != NULL);
|
| + return local;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::SetTempIndex(Definition* definition) {
|
| + definition->set_temp_index(
|
| + stack_ == NULL ? 0 : stack_->definition()->temp_index() + 1);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::Push(Definition* definition) {
|
| + SetTempIndex(definition);
|
| + Value::AddToList(new (Z) Value(definition), &stack_);
|
| +}
|
| +
|
| +
|
| +Value* FlowGraphBuilder::Pop() {
|
| + ASSERT(stack_ != NULL);
|
| + Value* value = stack_;
|
| + stack_ = value->next_use();
|
| + if (stack_ != NULL) stack_->set_previous_use(NULL);
|
| +
|
| + value->set_next_use(NULL);
|
| + value->set_previous_use(NULL);
|
| + value->definition()->ClearSSATempIndex();
|
| + return value;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::Drop() {
|
| + ASSERT(stack_ != NULL);
|
| + Fragment instructions;
|
| + Definition* definition = stack_->definition();
|
| + // The SSA renaming implementation doesn't like [LoadLocal]s without a
|
| + // tempindex.
|
| + if (definition->HasSSATemp() || definition->IsLoadLocal()) {
|
| + instructions <<= new (Z) DropTempsInstr(1, NULL);
|
| + } else {
|
| + definition->ClearTempIndex();
|
| + }
|
| +
|
| + Pop();
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +// TODO(27590): This method should be shared with
|
| +// runtime/vm/object.cc:RecognizeArithmeticOp.
|
| +Token::Kind FlowGraphBuilder::MethodKind(const dart::String& name) {
|
| + ASSERT(name.IsSymbol());
|
| + if (name.raw() == Symbols::Plus().raw()) {
|
| + return Token::kADD;
|
| + } else if (name.raw() == Symbols::Minus().raw()) {
|
| + return Token::kSUB;
|
| + } else if (name.raw() == Symbols::Star().raw()) {
|
| + return Token::kMUL;
|
| + } else if (name.raw() == Symbols::Slash().raw()) {
|
| + return Token::kDIV;
|
| + } else if (name.raw() == Symbols::TruncDivOperator().raw()) {
|
| + return Token::kTRUNCDIV;
|
| + } else if (name.raw() == Symbols::Percent().raw()) {
|
| + return Token::kMOD;
|
| + } else if (name.raw() == Symbols::BitOr().raw()) {
|
| + return Token::kBIT_OR;
|
| + } else if (name.raw() == Symbols::Ampersand().raw()) {
|
| + return Token::kBIT_AND;
|
| + } else if (name.raw() == Symbols::Caret().raw()) {
|
| + return Token::kBIT_XOR;
|
| + } else if (name.raw() == Symbols::LeftShiftOperator().raw()) {
|
| + return Token::kSHL;
|
| + } else if (name.raw() == Symbols::RightShiftOperator().raw()) {
|
| + return Token::kSHR;
|
| + } else if (name.raw() == Symbols::Tilde().raw()) {
|
| + return Token::kBIT_NOT;
|
| + } else if (name.raw() == Symbols::UnaryMinus().raw()) {
|
| + return Token::kNEGATE;
|
| + } else if (name.raw() == Symbols::EqualOperator().raw()) {
|
| + return Token::kEQ;
|
| + } else if (name.raw() == Symbols::Token(Token::kNE).raw()) {
|
| + return Token::kNE;
|
| + } else if (name.raw() == Symbols::LAngleBracket().raw()) {
|
| + return Token::kLT;
|
| + } else if (name.raw() == Symbols::RAngleBracket().raw()) {
|
| + return Token::kGT;
|
| + } else if (name.raw() == Symbols::LessEqualOperator().raw()) {
|
| + return Token::kLTE;
|
| + } else if (name.raw() == Symbols::GreaterEqualOperator().raw()) {
|
| + return Token::kGTE;
|
| + } else if (dart::Field::IsGetterName(name)) {
|
| + return Token::kGET;
|
| + } else if (dart::Field::IsSetterName(name)) {
|
| + return Token::kSET;
|
| + }
|
| + return Token::kILLEGAL;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::InlineBailout(const char* reason) {
|
| + bool is_inlining = exit_collector_ != NULL;
|
| + if (is_inlining) {
|
| + parsed_function_->function().set_is_inlinable(false);
|
| + parsed_function_->Bailout("kernel::FlowGraphBuilder", reason);
|
| + }
|
| +}
|
| +
|
| +
|
| +FlowGraph* FlowGraphBuilder::BuildGraph() {
|
| + const dart::Function& function = parsed_function_->function();
|
| +
|
| + if (function.IsConstructorClosureFunction()) return NULL;
|
| +
|
| + dart::Class& klass =
|
| + dart::Class::Handle(zone_, parsed_function_->function().Owner());
|
| +
|
| + // Find out if there is an enclosing kernel class (which will be used to
|
| + // resolve type parameters).
|
| + Class* kernel_klass = NULL;
|
| + dart::Function& topmost = dart::Function::Handle(Z, function.raw());
|
| + while (topmost.parent_function() != Object::null()) {
|
| + topmost = topmost.parent_function();
|
| + }
|
| + TreeNode* topmost_node = static_cast<TreeNode*>(topmost.kernel_function());
|
| + if (topmost_node != NULL) {
|
| + // Going up the closure->parent chain needs to result in a Procedure or
|
| + // Constructor.
|
| + TreeNode* parent = NULL;
|
| + if (topmost_node->IsProcedure()) {
|
| + parent = Procedure::Cast(topmost_node)->parent();
|
| + } else if (topmost_node->IsConstructor()) {
|
| + parent = Constructor::Cast(topmost_node)->parent();
|
| + } else if (topmost_node->IsField()) {
|
| + parent = Field::Cast(topmost_node)->parent();
|
| + }
|
| + if (parent != NULL && parent->IsClass()) kernel_klass = Class::Cast(parent);
|
| + }
|
| +
|
| + // Mark that we are using [klass]/[kernell_klass] as active class. Resolving
|
| + // of type parameters will get resolved via [kernell_klass] unless we are
|
| + // nested inside a static factory in which case we will use [member].
|
| + ActiveClassScope active_class_scope(&active_class_, kernel_klass, &klass);
|
| + Member* member = topmost_node != NULL && topmost_node->IsMember()
|
| + ? Member::Cast(topmost_node)
|
| + : NULL;
|
| + ActiveMemberScope active_member(&active_class_, member);
|
| +
|
| + // The IR builder will create its own local variables and scopes, and it
|
| + // will not need an AST. The code generator will assume that there is a
|
| + // local variable stack slot allocated for the current context and (I
|
| + // think) that the runtime will expect it to be at a fixed offset which
|
| + // requires allocating an unused expression temporary variable.
|
| + scopes_ = parsed_function_->EnsureKernelScopes();
|
| +
|
| + switch (function.kind()) {
|
| + case RawFunction::kClosureFunction:
|
| + case RawFunction::kRegularFunction:
|
| + case RawFunction::kGetterFunction:
|
| + case RawFunction::kSetterFunction: {
|
| + FunctionNode* kernel_function = node_->IsProcedure()
|
| + ? Procedure::Cast(node_)->function()
|
| + : FunctionNode::Cast(node_);
|
| + ActiveFunctionScope active_function_scope(&active_class_,
|
| + kernel_function);
|
| + return function.IsImplicitClosureFunction()
|
| + ? BuildGraphOfImplicitClosureFunction(kernel_function,
|
| + function)
|
| + : BuildGraphOfFunction(kernel_function);
|
| + }
|
| + case RawFunction::kConstructor: {
|
| + bool is_factory = function.IsFactory();
|
| + if (is_factory) {
|
| + Procedure* procedure = Procedure::Cast(node_);
|
| + FunctionNode* function = procedure->function();
|
| + ActiveFunctionScope active_function_scope(&active_class_, function);
|
| + return BuildGraphOfFunction(function, NULL);
|
| + } else {
|
| + Constructor* constructor = Constructor::Cast(node_);
|
| + FunctionNode* function = constructor->function();
|
| + ActiveFunctionScope active_function_scope(&active_class_, function);
|
| + return BuildGraphOfFunction(function, constructor);
|
| + }
|
| + }
|
| + case RawFunction::kImplicitGetter:
|
| + case RawFunction::kImplicitStaticFinalGetter:
|
| + case RawFunction::kImplicitSetter: {
|
| + Field* field = Field::Cast(node_);
|
| + return IsStaticInitializer(function, Z)
|
| + ? BuildGraphOfStaticFieldInitializer(field)
|
| + : BuildGraphOfFieldAccessor(field, scopes_->setter_value);
|
| + }
|
| + case RawFunction::kMethodExtractor:
|
| + return BuildGraphOfMethodExtractor(function);
|
| + case RawFunction::kNoSuchMethodDispatcher:
|
| + return BuildGraphOfNoSuchMethodDispatcher(function);
|
| + case RawFunction::kInvokeFieldDispatcher:
|
| + return BuildGraphOfInvokeFieldDispatcher(function);
|
| + case RawFunction::kSignatureFunction:
|
| + case RawFunction::kIrregexpFunction:
|
| + break;
|
| + }
|
| + UNREACHABLE();
|
| + return NULL;
|
| +}
|
| +
|
| +
|
| +FlowGraph* FlowGraphBuilder::BuildGraphOfFunction(FunctionNode* function,
|
| + Constructor* constructor) {
|
| + const Function& dart_function = parsed_function_->function();
|
| + TargetEntryInstr* normal_entry = BuildTargetEntry();
|
| + graph_entry_ = new (Z)
|
| + GraphEntryInstr(*parsed_function_, normal_entry, Compiler::kNoOSRDeoptId);
|
| +
|
| + SetupDefaultParameterValues(function);
|
| +
|
| + Fragment body;
|
| + if (!dart_function.is_native()) body += CheckStackOverflowInPrologue();
|
| + intptr_t context_size =
|
| + parsed_function_->node_sequence()->scope()->num_context_variables();
|
| + if (context_size > 0) {
|
| + body += PushContext(context_size);
|
| + LocalVariable* context = MakeTemporary();
|
| +
|
| + // Copy captured parameters from the stack into the context.
|
| + LocalScope* scope = parsed_function_->node_sequence()->scope();
|
| + intptr_t parameter_count = dart_function.NumParameters();
|
| + intptr_t parameter_index = parsed_function_->first_parameter_index();
|
| + for (intptr_t i = 0; i < parameter_count; ++i, --parameter_index) {
|
| + LocalVariable* variable = scope->VariableAt(i);
|
| + if (variable->is_captured()) {
|
| + // There is no LocalVariable describing the on-stack parameter so
|
| + // create one directly.
|
| + LocalVariable* parameter =
|
| + new (Z) LocalVariable(TokenPosition::kNoSource,
|
| + Symbols::TempParam(), Object::dynamic_type());
|
| + parameter->set_index(parameter_index);
|
| + // Mark the stack variable so it will be ignored by the code for
|
| + // try/catch.
|
| + parameter->set_is_captured_parameter(true);
|
| +
|
| + // Copy the parameter from the stack to the context. Overwrite it
|
| + // with a null constant on the stack so the original value is
|
| + // eligible for garbage collection.
|
| + body += LoadLocal(context);
|
| + body += LoadLocal(parameter);
|
| + body += StoreInstanceField(Context::variable_offset(variable->index()));
|
| + body += NullConstant();
|
| + body += StoreLocal(parameter);
|
| + body += Drop();
|
| + }
|
| + }
|
| + body += Drop(); // The context.
|
| + }
|
| + if (constructor != NULL) {
|
| + // TODO(27590): Currently the [VariableDeclaration]s from the
|
| + // initializers will be visible inside the entire body of the constructor.
|
| + // We should make a separate scope for them.
|
| + Class* kernel_klass = Class::Cast(constructor->parent());
|
| + body += TranslateInitializers(kernel_klass, &constructor->initializers());
|
| + }
|
| +
|
| + // The specification defines the result of `a == b` to be:
|
| + //
|
| + // a) if either side is `null` then the result is `identical(a, b)`.
|
| + // b) else the result is `a.operator==(b)`
|
| + //
|
| + // For user-defined implementations of `operator==` we need therefore
|
| + // implement the handling of a).
|
| + //
|
| + // The default `operator==` implementation in `Object` is implemented in terms
|
| + // of identical (which we assume here!) which means that case a) is actually
|
| + // included in b). So we just use the normal implementation in the body.
|
| + if ((dart_function.NumParameters() == 2) &&
|
| + (dart_function.name() == Symbols::EqualOperator().raw()) &&
|
| + (dart_function.Owner() != I->object_store()->object_class())) {
|
| + LocalVariable* parameter =
|
| + LookupVariable(function->positional_parameters()[0]);
|
| +
|
| + TargetEntryInstr* null_entry;
|
| + TargetEntryInstr* non_null_entry;
|
| +
|
| + body += LoadLocal(parameter);
|
| + body += BranchIfNull(&null_entry, &non_null_entry);
|
| +
|
| + // The argument was `null` and the receiver is not the null class (we only
|
| + // go into this branch for user-defined == operators) so we can return
|
| + // false.
|
| + Fragment null_fragment(null_entry);
|
| + null_fragment += Constant(Bool::False());
|
| + null_fragment += Return();
|
| +
|
| + body = Fragment(body.entry, non_null_entry);
|
| + }
|
| +
|
| + if (dart_function.is_native()) {
|
| + body += NativeFunctionBody(function, dart_function);
|
| + } else if (function->body() != NULL) {
|
| + body += TranslateStatement(function->body());
|
| + }
|
| + if (body.is_open()) {
|
| + body += NullConstant();
|
| + body += Return();
|
| + }
|
| +
|
| + // If functions body contains any yield points build switch statement that
|
| + // selects a continuation point based on the value of :await_jump_var.
|
| + if (!yield_continuations_.is_empty()) {
|
| + // The code we are building will be executed right after we enter
|
| + // the function and before any nested contexts are allocated.
|
| + // Reset current context_depth_ to match this.
|
| + intptr_t current_context_depth = context_depth_;
|
| + context_depth_ = scopes_->yield_jump_variable->owner()->context_level();
|
| +
|
| + // Prepend an entry corresponding to normal entry to the function.
|
| + yield_continuations_.InsertAt(
|
| + 0, YieldContinuation(new (Z) DropTempsInstr(0, NULL),
|
| + CatchClauseNode::kInvalidTryIndex));
|
| + yield_continuations_[0].entry->LinkTo(body.entry);
|
| +
|
| + // Build a switch statement.
|
| + Fragment dispatch;
|
| +
|
| + // Load :await_jump_var into a temporary.
|
| + dispatch += LoadLocal(scopes_->yield_jump_variable);
|
| + dispatch += StoreLocal(scopes_->switch_variable);
|
| + dispatch += Drop();
|
| +
|
| + BlockEntryInstr* block = NULL;
|
| + for (intptr_t i = 0; i < yield_continuations_.length(); i++) {
|
| + if (i == 1) {
|
| + // This is not a normal entry but a resumption. Restore
|
| + // :current_context_var from :await_ctx_var.
|
| + // Note: after this point context_depth_ does not match current context
|
| + // depth so we should not access any local variables anymore.
|
| + dispatch += LoadLocal(scopes_->yield_context_variable);
|
| + dispatch += StoreLocal(parsed_function_->current_context_var());
|
| + dispatch += Drop();
|
| + }
|
| + if (i == (yield_continuations_.length() - 1)) {
|
| + // We reached the last possility, no need to build more ifs.
|
| + // Coninue to the last continuation.
|
| + // Note: continuations start with nop DropTemps instruction
|
| + // which acts like an anchor, so we need to skip it.
|
| + block->set_try_index(yield_continuations_[i].try_index);
|
| + dispatch <<= yield_continuations_[i].entry->next();
|
| + break;
|
| + }
|
| +
|
| + // Build comparison:
|
| + //
|
| + // if (:await_ctx_var == i) {
|
| + // -> yield_continuations_[i]
|
| + // } else ...
|
| + //
|
| + TargetEntryInstr* then;
|
| + TargetEntryInstr* otherwise;
|
| + dispatch += LoadLocal(scopes_->switch_variable);
|
| + dispatch += IntConstant(i);
|
| + dispatch += BranchIfStrictEqual(&then, &otherwise);
|
| +
|
| + // True branch is linked to appropriate continuation point.
|
| + // Note: continuations start with nop DropTemps instruction
|
| + // which acts like an anchor, so we need to skip it.
|
| + then->LinkTo(yield_continuations_[i].entry->next());
|
| + then->set_try_index(yield_continuations_[i].try_index);
|
| +
|
| + // False branch will contain the next comparison.
|
| + dispatch = Fragment(dispatch.entry, otherwise);
|
| + block = otherwise;
|
| + }
|
| + body = dispatch;
|
| +
|
| + context_depth_ = current_context_depth;
|
| + }
|
| + normal_entry->LinkTo(body.entry);
|
| +
|
| + return new (Z) FlowGraph(*parsed_function_, graph_entry_, next_block_id_ - 1);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::NativeFunctionBody(FunctionNode* kernel_function,
|
| + const Function& function) {
|
| + ASSERT(function.is_native());
|
| + // We explicitly build the graph for native functions in the same way that the
|
| + // from-source backend does. We should find a way to have a single component
|
| + // to build these graphs so that this code is not duplicated.
|
| +
|
| + Fragment body;
|
| + MethodRecognizer::Kind kind = MethodRecognizer::RecognizeKind(function);
|
| + switch (kind) {
|
| + case MethodRecognizer::kObjectEquals:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadLocal(
|
| + LookupVariable(kernel_function->positional_parameters()[0]));
|
| + body += StrictCompare(Token::kEQ_STRICT);
|
| + break;
|
| + case MethodRecognizer::kStringBaseLength:
|
| + case MethodRecognizer::kStringBaseIsEmpty:
|
| + // Depending on FLAG_support_externalizable_strings, treat string length
|
| + // loads as mutable so that the class check that precedes them will not be
|
| + // hoisted. This is unsafe because string externalization can change the
|
| + // class.
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadNativeField(MethodRecognizer::kStringBaseLength,
|
| + dart::String::length_offset(),
|
| + Type::ZoneHandle(Z, Type::SmiType()), kSmiCid,
|
| + !FLAG_support_externalizable_strings);
|
| + if (kind == MethodRecognizer::kStringBaseIsEmpty) {
|
| + body += IntConstant(0);
|
| + body += StrictCompare(Token::kEQ_STRICT);
|
| + }
|
| + break;
|
| + case MethodRecognizer::kGrowableArrayLength:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadNativeField(kind, GrowableObjectArray::length_offset(),
|
| + Type::ZoneHandle(Z, Type::SmiType()), kSmiCid);
|
| + break;
|
| + case MethodRecognizer::kObjectArrayLength:
|
| + case MethodRecognizer::kImmutableArrayLength:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body +=
|
| + LoadNativeField(kind, Array::length_offset(),
|
| + Type::ZoneHandle(Z, Type::SmiType()), kSmiCid, true);
|
| + break;
|
| + case MethodRecognizer::kTypedDataLength:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body +=
|
| + LoadNativeField(kind, TypedData::length_offset(),
|
| + Type::ZoneHandle(Z, Type::SmiType()), kSmiCid, true);
|
| + break;
|
| + case MethodRecognizer::kClassIDgetID:
|
| + body += LoadLocal(
|
| + LookupVariable(kernel_function->positional_parameters()[0]));
|
| + body += LoadClassId();
|
| + break;
|
| + case MethodRecognizer::kGrowableArrayCapacity:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadField(Array::data_offset(), kArrayCid);
|
| + body += LoadNativeField(MethodRecognizer::kObjectArrayLength,
|
| + Array::length_offset(),
|
| + Type::ZoneHandle(Z, Type::SmiType()), kSmiCid);
|
| + break;
|
| + case MethodRecognizer::kObjectArrayAllocate:
|
| + body += LoadLocal(scopes_->type_arguments_variable);
|
| + body += LoadLocal(
|
| + LookupVariable(kernel_function->positional_parameters()[0]));
|
| + body += CreateArray();
|
| + break;
|
| + case MethodRecognizer::kBigint_getDigits:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadNativeField(kind, Bigint::digits_offset(),
|
| + Object::dynamic_type(), kTypedDataUint32ArrayCid);
|
| + break;
|
| + case MethodRecognizer::kBigint_getUsed:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadNativeField(kind, Bigint::used_offset(),
|
| + Type::ZoneHandle(Z, Type::SmiType()), kSmiCid);
|
| + break;
|
| + case MethodRecognizer::kLinkedHashMap_getIndex:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadNativeField(kind, LinkedHashMap::index_offset(),
|
| + Object::dynamic_type(), kDynamicCid);
|
| + break;
|
| + case MethodRecognizer::kLinkedHashMap_setIndex:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadLocal(
|
| + LookupVariable(kernel_function->positional_parameters()[0]));
|
| + body += StoreInstanceField(LinkedHashMap::index_offset());
|
| + body += NullConstant();
|
| + break;
|
| + case MethodRecognizer::kLinkedHashMap_getData:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadNativeField(kind, LinkedHashMap::data_offset(),
|
| + Object::dynamic_type(), kArrayCid);
|
| + break;
|
| + case MethodRecognizer::kLinkedHashMap_setData:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadLocal(
|
| + LookupVariable(kernel_function->positional_parameters()[0]));
|
| + body += StoreInstanceField(LinkedHashMap::data_offset());
|
| + body += NullConstant();
|
| + break;
|
| + case MethodRecognizer::kLinkedHashMap_getHashMask:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadNativeField(kind, LinkedHashMap::hash_mask_offset(),
|
| + Type::ZoneHandle(Z, Type::SmiType()), kSmiCid);
|
| + break;
|
| + case MethodRecognizer::kLinkedHashMap_setHashMask:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadLocal(
|
| + LookupVariable(kernel_function->positional_parameters()[0]));
|
| + // TODO(27590): This store does not need a store barrier.
|
| + body += StoreInstanceField(LinkedHashMap::hash_mask_offset());
|
| + body += NullConstant();
|
| + break;
|
| + case MethodRecognizer::kLinkedHashMap_getUsedData:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadNativeField(kind, LinkedHashMap::used_data_offset(),
|
| + Type::ZoneHandle(Z, Type::SmiType()), kSmiCid);
|
| + break;
|
| + case MethodRecognizer::kLinkedHashMap_setUsedData:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadLocal(
|
| + LookupVariable(kernel_function->positional_parameters()[0]));
|
| + // TODO(27590): This store does not need a store barrier.
|
| + body += StoreInstanceField(LinkedHashMap::used_data_offset());
|
| + body += NullConstant();
|
| + break;
|
| + case MethodRecognizer::kLinkedHashMap_getDeletedKeys:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadNativeField(kind, LinkedHashMap::deleted_keys_offset(),
|
| + Type::ZoneHandle(Z, Type::SmiType()), kSmiCid);
|
| + break;
|
| + case MethodRecognizer::kLinkedHashMap_setDeletedKeys:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadLocal(
|
| + LookupVariable(kernel_function->positional_parameters()[0]));
|
| + // TODO(27590): This store does not need a store barrier.
|
| + body += StoreInstanceField(LinkedHashMap::deleted_keys_offset());
|
| + body += NullConstant();
|
| + break;
|
| + case MethodRecognizer::kBigint_getNeg:
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadNativeField(kind, Bigint::neg_offset(),
|
| + Type::ZoneHandle(Z, Type::BoolType()), kBoolCid);
|
| + break;
|
| + default: {
|
| + dart::String& name = dart::String::ZoneHandle(Z, function.native_name());
|
| + body += NativeCall(&name, &function);
|
| + break;
|
| + }
|
| + }
|
| + return body + Return();
|
| +}
|
| +
|
| +
|
| +FlowGraph* FlowGraphBuilder::BuildGraphOfFieldAccessor(
|
| + Field* kernel_field, LocalVariable* setter_value) {
|
| + const dart::Function& function = parsed_function_->function();
|
| +
|
| + bool is_setter = function.IsImplicitSetterFunction();
|
| + bool is_method = !function.IsStaticFunction();
|
| + dart::Field& field =
|
| + dart::Field::ZoneHandle(Z, H.LookupFieldByKernelField(kernel_field));
|
| +
|
| + TargetEntryInstr* normal_entry = BuildTargetEntry();
|
| + graph_entry_ = new (Z)
|
| + GraphEntryInstr(*parsed_function_, normal_entry, Compiler::kNoOSRDeoptId);
|
| +
|
| + // TODO(27590): Add support for FLAG_use_field_guards.
|
| + Fragment body(normal_entry);
|
| + if (is_setter) {
|
| + if (is_method) {
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadLocal(setter_value);
|
| + body += StoreInstanceField(field);
|
| + } else {
|
| + body += LoadLocal(setter_value);
|
| + body += StoreStaticField(field);
|
| + }
|
| + body += NullConstant();
|
| + } else if (is_method) {
|
| + body += LoadLocal(scopes_->this_variable);
|
| + body += LoadField(field);
|
| + } else if (field.is_const()) {
|
| + // If the parser needs to know the value of an uninitialized constant field
|
| + // it will set the value to the transition sentinel (used to detect circular
|
| + // initialization) and then call the implicit getter. Thus, the getter
|
| + // cannot contain the InitStaticField instruction that normal static getters
|
| + // contain because it would detect spurious circular initialization when it
|
| + // checks for the transition sentinel.
|
| + Expression* initializer = kernel_field->initializer();
|
| + ASSERT(initializer != NULL);
|
| + body += Constant(constant_evaluator_.EvaluateExpression(initializer));
|
| + } else {
|
| + // The field always has an initializer because static fields without
|
| + // initializers are initialized eagerly and do not have implicit getters.
|
| + ASSERT(field.has_initializer());
|
| + body += Constant(field);
|
| + body += InitStaticField(field);
|
| + body += Constant(field);
|
| + body += LoadStaticField();
|
| + }
|
| + body += Return();
|
| +
|
| + return new (Z) FlowGraph(*parsed_function_, graph_entry_, next_block_id_ - 1);
|
| +}
|
| +
|
| +
|
| +FlowGraph* FlowGraphBuilder::BuildGraphOfStaticFieldInitializer(
|
| + Field* kernel_field) {
|
| + ASSERT(kernel_field->IsStatic());
|
| +
|
| + Expression* initializer = kernel_field->initializer();
|
| +
|
| + TargetEntryInstr* normal_entry = BuildTargetEntry();
|
| + graph_entry_ = new (Z)
|
| + GraphEntryInstr(*parsed_function_, normal_entry, Compiler::kNoOSRDeoptId);
|
| +
|
| + Fragment body(normal_entry);
|
| + body += CheckStackOverflowInPrologue();
|
| + if (kernel_field->IsConst()) {
|
| + body += Constant(constant_evaluator_.EvaluateExpression(initializer));
|
| + } else {
|
| + body += TranslateExpression(initializer);
|
| + }
|
| + body += Return();
|
| +
|
| + return new (Z) FlowGraph(*parsed_function_, graph_entry_, next_block_id_ - 1);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::BuildImplicitClosureCreation(
|
| + const Function& target) {
|
| + Fragment fragment;
|
| + const dart::Class& closure_class =
|
| + dart::Class::ZoneHandle(Z, I->object_store()->closure_class());
|
| + fragment += AllocateObject(closure_class, target);
|
| + LocalVariable* closure = MakeTemporary();
|
| +
|
| + // Allocate a context that closes over `this`.
|
| + fragment += AllocateContext(1);
|
| + LocalVariable* context = MakeTemporary();
|
| +
|
| + // Store the function and the context in the closure.
|
| + fragment += LoadLocal(closure);
|
| + fragment += Constant(target);
|
| + fragment += StoreInstanceField(Closure::function_offset());
|
| +
|
| + fragment += LoadLocal(closure);
|
| + fragment += LoadLocal(context);
|
| + fragment += StoreInstanceField(Closure::context_offset());
|
| +
|
| + // The context is on top of the operand stack. Store `this`. The context
|
| + // doesn't need a parent pointer because it doesn't close over anything
|
| + // else.
|
| + fragment += LoadLocal(scopes_->this_variable);
|
| + fragment += StoreInstanceField(Context::variable_offset(0));
|
| +
|
| + return fragment;
|
| +}
|
| +
|
| +
|
| +FlowGraph* FlowGraphBuilder::BuildGraphOfMethodExtractor(
|
| + const Function& method) {
|
| + // A method extractor is the implicit getter for a method.
|
| + const Function& function =
|
| + Function::ZoneHandle(Z, method.extracted_method_closure());
|
| +
|
| + TargetEntryInstr* normal_entry = BuildTargetEntry();
|
| + graph_entry_ = new (Z)
|
| + GraphEntryInstr(*parsed_function_, normal_entry, Compiler::kNoOSRDeoptId);
|
| + Fragment body(normal_entry);
|
| + body += CheckStackOverflowInPrologue();
|
| + body += BuildImplicitClosureCreation(function);
|
| + body += Return();
|
| +
|
| + return new (Z) FlowGraph(*parsed_function_, graph_entry_, next_block_id_ - 1);
|
| +}
|
| +
|
| +
|
| +FlowGraph* FlowGraphBuilder::BuildGraphOfImplicitClosureFunction(
|
| + FunctionNode* kernel_function, const Function& function) {
|
| + const Function& target = Function::ZoneHandle(Z, function.parent_function());
|
| +
|
| + TargetEntryInstr* normal_entry = BuildTargetEntry();
|
| + graph_entry_ = new (Z)
|
| + GraphEntryInstr(*parsed_function_, normal_entry, Compiler::kNoOSRDeoptId);
|
| + SetupDefaultParameterValues(kernel_function);
|
| +
|
| + Fragment body(normal_entry);
|
| + body += CheckStackOverflowInPrologue();
|
| +
|
| + // Load all the arguments.
|
| + if (!target.is_static()) {
|
| + // The context has a fixed shape: a single variable which is the
|
| + // closed-over receiver.
|
| + body += LoadLocal(parsed_function_->current_context_var());
|
| + body += LoadField(Context::variable_offset(0));
|
| + body += PushArgument();
|
| + }
|
| + intptr_t positional_argument_count =
|
| + kernel_function->positional_parameters().length();
|
| + for (intptr_t i = 0; i < positional_argument_count; i++) {
|
| + body +=
|
| + LoadLocal(LookupVariable(kernel_function->positional_parameters()[i]));
|
| + body += PushArgument();
|
| + }
|
| + intptr_t named_argument_count = kernel_function->named_parameters().length();
|
| + Array& argument_names = Array::ZoneHandle(Z);
|
| + if (named_argument_count > 0) {
|
| + argument_names = Array::New(named_argument_count);
|
| + for (intptr_t i = 0; i < named_argument_count; i++) {
|
| + VariableDeclaration* variable = kernel_function->named_parameters()[i];
|
| + body += LoadLocal(LookupVariable(variable));
|
| + body += PushArgument();
|
| + argument_names.SetAt(i, H.DartSymbol(variable->name()));
|
| + }
|
| + }
|
| + // Forward them to the target.
|
| + intptr_t argument_count = positional_argument_count + named_argument_count;
|
| + if (!target.is_static()) ++argument_count;
|
| + body += StaticCall(target, argument_count, argument_names);
|
| +
|
| + // Return the result.
|
| + body += Return();
|
| +
|
| + return new (Z) FlowGraph(*parsed_function_, graph_entry_, next_block_id_ - 1);
|
| +}
|
| +
|
| +
|
| +FlowGraph* FlowGraphBuilder::BuildGraphOfNoSuchMethodDispatcher(
|
| + const Function& function) {
|
| + // This function is specialized for a receiver class, a method name, and
|
| + // the arguments descriptor at a call site.
|
| +
|
| + TargetEntryInstr* normal_entry = BuildTargetEntry();
|
| + graph_entry_ = new (Z)
|
| + GraphEntryInstr(*parsed_function_, normal_entry, Compiler::kNoOSRDeoptId);
|
| +
|
| + // The backend will expect an array of default values for all the named
|
| + // parameters, even if they are all known to be passed at the call site
|
| + // because the call site matches the arguments descriptor. Use null for
|
| + // the default values.
|
| + const Array& descriptor_array =
|
| + Array::ZoneHandle(Z, function.saved_args_desc());
|
| + ArgumentsDescriptor descriptor(descriptor_array);
|
| + ZoneGrowableArray<const Instance*>* default_values =
|
| + new ZoneGrowableArray<const Instance*>(Z, descriptor.NamedCount());
|
| + for (intptr_t i = 0; i < descriptor.NamedCount(); ++i) {
|
| + default_values->Add(&Object::null_instance());
|
| + }
|
| + parsed_function_->set_default_parameter_values(default_values);
|
| +
|
| + Fragment body(normal_entry);
|
| + body += CheckStackOverflowInPrologue();
|
| +
|
| + // The receiver is the first argument to noSuchMethod, and it is the first
|
| + // argument passed to the dispatcher function.
|
| + LocalScope* scope = parsed_function_->node_sequence()->scope();
|
| + body += LoadLocal(scope->VariableAt(0));
|
| + body += PushArgument();
|
| +
|
| + // The second argument to noSuchMethod is an invocation mirror. Push the
|
| + // arguments for allocating the invocation mirror. First, the name.
|
| + body += Constant(dart::String::ZoneHandle(Z, function.name()));
|
| + body += PushArgument();
|
| +
|
| + // Second, the arguments descriptor.
|
| + body += Constant(descriptor_array);
|
| + body += PushArgument();
|
| +
|
| + // Third, an array containing the original arguments. Create it and fill
|
| + // it in.
|
| + body += Constant(TypeArguments::ZoneHandle(Z, TypeArguments::null()));
|
| + body += IntConstant(descriptor.Count());
|
| + body += CreateArray();
|
| + LocalVariable* array = MakeTemporary();
|
| + for (intptr_t i = 0; i < descriptor.PositionalCount(); ++i) {
|
| + body += LoadLocal(array);
|
| + body += IntConstant(i);
|
| + body += LoadLocal(scope->VariableAt(i));
|
| + body += StoreIndexed(kArrayCid);
|
| + body += Drop();
|
| + }
|
| + dart::String& name = dart::String::Handle(Z);
|
| + for (intptr_t i = 0; i < descriptor.NamedCount(); ++i) {
|
| + intptr_t parameter_index = descriptor.PositionalCount() + i;
|
| + name = descriptor.NameAt(i);
|
| + name = dart::Symbols::New(H.thread(), name);
|
| + body += LoadLocal(array);
|
| + body += IntConstant(descriptor.PositionAt(i));
|
| + body += LoadLocal(scope->VariableAt(parameter_index));
|
| + body += StoreIndexed(kArrayCid);
|
| + body += Drop();
|
| + }
|
| + body += PushArgument();
|
| +
|
| + // Fourth, false indicating this is not a super NoSuchMethod.
|
| + body += Constant(Bool::False());
|
| + body += PushArgument();
|
| +
|
| + const dart::Class& mirror_class = dart::Class::Handle(
|
| + Z, dart::Library::LookupCoreClass(Symbols::InvocationMirror()));
|
| + ASSERT(!mirror_class.IsNull());
|
| + const Function& allocation_function = Function::ZoneHandle(
|
| + Z, mirror_class.LookupStaticFunction(dart::Library::PrivateCoreLibName(
|
| + Symbols::AllocateInvocationMirror())));
|
| + ASSERT(!allocation_function.IsNull());
|
| + body += StaticCall(allocation_function, 4);
|
| + body += PushArgument(); // For the call to noSuchMethod.
|
| +
|
| + ArgumentsDescriptor two_arguments(
|
| + Array::Handle(Z, ArgumentsDescriptor::New(2)));
|
| + Function& no_such_method =
|
| + Function::ZoneHandle(Z, Resolver::ResolveDynamicForReceiverClass(
|
| + dart::Class::Handle(Z, function.Owner()),
|
| + Symbols::NoSuchMethod(), two_arguments));
|
| + if (no_such_method.IsNull()) {
|
| + // If noSuchMethod is not found on the receiver class, call
|
| + // Object.noSuchMethod.
|
| + no_such_method = Resolver::ResolveDynamicForReceiverClass(
|
| + dart::Class::Handle(Z, I->object_store()->object_class()),
|
| + Symbols::NoSuchMethod(), two_arguments);
|
| + }
|
| + body += StaticCall(no_such_method, 2);
|
| + body += Return();
|
| +
|
| + return new (Z) FlowGraph(*parsed_function_, graph_entry_, next_block_id_ - 1);
|
| +}
|
| +
|
| +
|
| +FlowGraph* FlowGraphBuilder::BuildGraphOfInvokeFieldDispatcher(
|
| + const Function& function) {
|
| + // Find the name of the field we should dispatch to.
|
| + const dart::Class& owner = dart::Class::Handle(Z, function.Owner());
|
| + ASSERT(!owner.IsNull());
|
| + const dart::String& field_name = dart::String::Handle(Z, function.name());
|
| + const dart::String& getter_name = dart::String::ZoneHandle(
|
| + Z,
|
| + Symbols::New(H.thread(), dart::String::Handle(
|
| + Z, dart::Field::GetterSymbol(field_name))));
|
| +
|
| + // Determine if this is `class Closure { get call => this; }`
|
| + const dart::Class& closure_class =
|
| + dart::Class::Handle(Z, I->object_store()->closure_class());
|
| + const bool is_closure_call = (owner.raw() == closure_class.raw()) &&
|
| + field_name.Equals(Symbols::Call());
|
| +
|
| + // Set default parameters & construct argument names array.
|
| + //
|
| + // The backend will expect an array of default values for all the named
|
| + // parameters, even if they are all known to be passed at the call site
|
| + // because the call site matches the arguments descriptor. Use null for
|
| + // the default values.
|
| + const Array& descriptor_array =
|
| + Array::ZoneHandle(Z, function.saved_args_desc());
|
| + ArgumentsDescriptor descriptor(descriptor_array);
|
| + const Array& argument_names =
|
| + Array::ZoneHandle(Z, Array::New(descriptor.NamedCount(), Heap::kOld));
|
| + ZoneGrowableArray<const Instance*>* default_values =
|
| + new ZoneGrowableArray<const Instance*>(Z, descriptor.NamedCount());
|
| + dart::String& string_handle = dart::String::Handle(Z);
|
| + for (intptr_t i = 0; i < descriptor.NamedCount(); ++i) {
|
| + default_values->Add(&Object::null_instance());
|
| + string_handle = descriptor.NameAt(i);
|
| + argument_names.SetAt(i, string_handle);
|
| + }
|
| + parsed_function_->set_default_parameter_values(default_values);
|
| +
|
| + TargetEntryInstr* normal_entry = BuildTargetEntry();
|
| + graph_entry_ = new (Z)
|
| + GraphEntryInstr(*parsed_function_, normal_entry, Compiler::kNoOSRDeoptId);
|
| +
|
| + Fragment body(normal_entry);
|
| + body += CheckStackOverflowInPrologue();
|
| +
|
| + LocalScope* scope = parsed_function_->node_sequence()->scope();
|
| +
|
| + LocalVariable* closure = NULL;
|
| + if (is_closure_call) {
|
| + closure = scope->VariableAt(0);
|
| +
|
| + // The closure itself is the first argument.
|
| + body += LoadLocal(closure);
|
| + } else {
|
| + // Invoke the getter to get the field value.
|
| + body += LoadLocal(scope->VariableAt(0));
|
| + body += PushArgument();
|
| + body += InstanceCall(getter_name, Token::kGET, 1);
|
| + }
|
| +
|
| + body += PushArgument();
|
| +
|
| + // Push all arguments onto the stack.
|
| + intptr_t pos = 1;
|
| + for (; pos < descriptor.Count(); pos++) {
|
| + body += LoadLocal(scope->VariableAt(pos));
|
| + body += PushArgument();
|
| + }
|
| +
|
| + if (is_closure_call) {
|
| + // Lookup the function in the closure.
|
| + body += LoadLocal(closure);
|
| + body += LoadField(Closure::function_offset());
|
| +
|
| + body += ClosureCall(descriptor.Count(), argument_names);
|
| + } else {
|
| + body += InstanceCall(Symbols::Call(), Token::kILLEGAL, descriptor.Count(),
|
| + argument_names);
|
| + }
|
| +
|
| + body += Return();
|
| +
|
| + return new (Z) FlowGraph(*parsed_function_, graph_entry_, next_block_id_ - 1);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::SetupDefaultParameterValues(FunctionNode* function) {
|
| + intptr_t num_optional_parameters =
|
| + parsed_function_->function().NumOptionalParameters();
|
| + if (num_optional_parameters > 0) {
|
| + ZoneGrowableArray<const Instance*>* default_values =
|
| + new ZoneGrowableArray<const Instance*>(Z, num_optional_parameters);
|
| +
|
| + if (parsed_function_->function().HasOptionalNamedParameters()) {
|
| + ASSERT(!parsed_function_->function().HasOptionalPositionalParameters());
|
| + for (intptr_t i = 0; i < num_optional_parameters; i++) {
|
| + VariableDeclaration* variable = function->named_parameters()[i];
|
| + Instance* default_value;
|
| + if (variable->initializer() != NULL) {
|
| + default_value =
|
| + &constant_evaluator_.EvaluateExpression(variable->initializer());
|
| + } else {
|
| + default_value = &Instance::ZoneHandle(Z, Instance::null());
|
| + }
|
| + default_values->Add(default_value);
|
| + }
|
| + } else {
|
| + ASSERT(parsed_function_->function().HasOptionalPositionalParameters());
|
| + intptr_t required = function->required_parameter_count();
|
| + for (intptr_t i = 0; i < num_optional_parameters; i++) {
|
| + VariableDeclaration* variable =
|
| + function->positional_parameters()[required + i];
|
| + Instance* default_value;
|
| + if (variable->initializer() != NULL) {
|
| + default_value =
|
| + &constant_evaluator_.EvaluateExpression(variable->initializer());
|
| + } else {
|
| + default_value = &Instance::ZoneHandle(Z, Instance::null());
|
| + }
|
| + default_values->Add(default_value);
|
| + }
|
| + }
|
| + parsed_function_->set_default_parameter_values(default_values);
|
| + }
|
| +}
|
| +
|
| +
|
| +TargetEntryInstr* FlowGraphBuilder::BuildTargetEntry() {
|
| + return new (Z) TargetEntryInstr(AllocateBlockId(), CurrentTryIndex());
|
| +}
|
| +
|
| +
|
| +JoinEntryInstr* FlowGraphBuilder::BuildJoinEntry() {
|
| + return new (Z) JoinEntryInstr(AllocateBlockId(), CurrentTryIndex());
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::TranslateInitializers(
|
| + Class* kernel_klass, List<Initializer>* initializers) {
|
| + Fragment instructions;
|
| +
|
| + // These come from:
|
| + // class A {
|
| + // var x = (expr);
|
| + // }
|
| + for (intptr_t i = 0; i < kernel_klass->fields().length(); i++) {
|
| + Field* kernel_field = kernel_klass->fields()[i];
|
| + Expression* init = kernel_field->initializer();
|
| + if (!kernel_field->IsStatic() && init != NULL) {
|
| + dart::Field& field =
|
| + dart::Field::ZoneHandle(Z, H.LookupFieldByKernelField(kernel_field));
|
| +
|
| + EnterScope(kernel_field);
|
| + // TODO(27590): Support FLAG_use_field_guards.
|
| + instructions += LoadLocal(scopes_->this_variable);
|
| + instructions += TranslateExpression(init);
|
| + instructions += StoreInstanceField(field);
|
| + ExitScope(kernel_field);
|
| + }
|
| + }
|
| +
|
| + // These to come from:
|
| + // class A {
|
| + // var x;
|
| + // var y;
|
| + // A(this.x) : super(expr), y = (expr);
|
| + // }
|
| + for (intptr_t i = 0; i < initializers->length(); i++) {
|
| + Initializer* initializer = (*initializers)[i];
|
| + if (initializer->IsFieldInitializer()) {
|
| + FieldInitializer* init = FieldInitializer::Cast(initializer);
|
| + dart::Field& field =
|
| + dart::Field::ZoneHandle(Z, H.LookupFieldByKernelField(init->field()));
|
| +
|
| + // TODO(27590): Support FLAG_use_field_guards.
|
| + instructions += LoadLocal(scopes_->this_variable);
|
| + instructions += TranslateExpression(init->value());
|
| + instructions += StoreInstanceField(field);
|
| + } else if (initializer->IsSuperInitializer()) {
|
| + SuperInitializer* init = SuperInitializer::Cast(initializer);
|
| +
|
| + instructions += LoadLocal(scopes_->this_variable);
|
| + instructions += PushArgument();
|
| +
|
| + ASSERT(init->arguments()->types().length() == 0);
|
| + Array& argument_names = Array::ZoneHandle(Z);
|
| + instructions += TranslateArguments(init->arguments(), &argument_names);
|
| +
|
| + const Function& target = Function::ZoneHandle(
|
| + Z, H.LookupConstructorByKernelConstructor(init->target()));
|
| + intptr_t argument_count = init->arguments()->count() + 1;
|
| + instructions += StaticCall(target, argument_count, argument_names);
|
| + instructions += Drop();
|
| + } else if (initializer->IsRedirectingInitializer()) {
|
| + RedirectingInitializer* init = RedirectingInitializer::Cast(initializer);
|
| +
|
| + instructions += LoadLocal(scopes_->this_variable);
|
| + instructions += PushArgument();
|
| +
|
| + ASSERT(init->arguments()->types().length() == 0);
|
| + Array& argument_names = Array::ZoneHandle(Z);
|
| + instructions += TranslateArguments(init->arguments(), &argument_names);
|
| +
|
| + const Function& target = Function::ZoneHandle(
|
| + Z, H.LookupConstructorByKernelConstructor(init->target()));
|
| + intptr_t argument_count = init->arguments()->count() + 1;
|
| + instructions += StaticCall(target, argument_count, argument_names);
|
| + instructions += Drop();
|
| + } else if (initializer->IsLocalInitializer()) {
|
| + // The other initializers following this one might read the variable. This
|
| + // is used e.g. for evaluating the arguments to a super call first, run
|
| + // normal field initializers next and then make the actual super call:
|
| + //
|
| + // The frontend converts
|
| + //
|
| + // class A {
|
| + // var x;
|
| + // A(a, b) : super(a + b), x = 2*b {}
|
| + // }
|
| + //
|
| + // to
|
| + //
|
| + // class A {
|
| + // var x;
|
| + // A(a, b) : tmp = a + b, x = 2*b, super(tmp) {}
|
| + // }
|
| + //
|
| + // (This is strictly speaking not what one should do in terms of the
|
| + // specification but that is how it is currently implemented.)
|
| + LocalInitializer* init = LocalInitializer::Cast(initializer);
|
| +
|
| + VariableDeclaration* declaration = init->variable();
|
| + LocalVariable* variable = LookupVariable(declaration);
|
| + Expression* initializer = init->variable()->initializer();
|
| + ASSERT(initializer != NULL);
|
| + ASSERT(!declaration->IsConst());
|
| +
|
| + instructions += TranslateExpression(initializer);
|
| + instructions += StoreLocal(variable);
|
| + instructions += Drop();
|
| +
|
| + fragment_ = instructions;
|
| + } else {
|
| + UNIMPLEMENTED();
|
| + }
|
| + }
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::TranslateStatement(Statement* statement) {
|
| +#ifdef DEBUG
|
| + intptr_t original_context_depth = context_depth_;
|
| +#endif
|
| + statement->AcceptStatementVisitor(this);
|
| + DEBUG_ASSERT(context_depth_ == original_context_depth);
|
| + return fragment_;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::TranslateCondition(Expression* expression,
|
| + bool* negate) {
|
| + *negate = expression->IsNot();
|
| + if (*negate) {
|
| + return TranslateExpression(Not::Cast(expression)->expression());
|
| + }
|
| + return TranslateExpression(expression);
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::TranslateExpression(Expression* expression) {
|
| + expression->AcceptExpressionVisitor(this);
|
| + return fragment_;
|
| +}
|
| +
|
| +
|
| +ArgumentArray FlowGraphBuilder::GetArguments(int count) {
|
| + ArgumentArray arguments =
|
| + new (Z) ZoneGrowableArray<PushArgumentInstr*>(Z, count);
|
| + arguments->SetLength(count);
|
| + for (intptr_t i = count - 1; i >= 0; --i) {
|
| + ASSERT(stack_->definition()->IsPushArgument());
|
| + ASSERT(!stack_->definition()->HasSSATemp());
|
| + arguments->data()[i] = stack_->definition()->AsPushArgument();
|
| + Drop();
|
| + }
|
| + pending_argument_count_ -= count;
|
| + ASSERT(pending_argument_count_ >= 0);
|
| + return arguments;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitInvalidExpression(InvalidExpression* node) {
|
| + // TODO(27590): Once we have better error information we might need to
|
| + // make some invalid expressions not NSM errors but type/compile-time/...
|
| + // errors.
|
| + fragment_ = ThrowNoSuchMethodError();
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitNullLiteral(NullLiteral* node) {
|
| + fragment_ = Constant(Instance::ZoneHandle(Z, Instance::null()));
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitBoolLiteral(BoolLiteral* node) {
|
| + fragment_ = Constant(Bool::Get(node->value()));
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitIntLiteral(IntLiteral* node) {
|
| + fragment_ = IntConstant(node->value());
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitBigintLiteral(BigintLiteral* node) {
|
| + const dart::String& value = H.DartString(node->value());
|
| + fragment_ = Constant(Integer::ZoneHandle(Z, Integer::New(value, Heap::kOld)));
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitDoubleLiteral(DoubleLiteral* node) {
|
| + fragment_ = Constant(constant_evaluator_.EvaluateExpression(node));
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitStringLiteral(StringLiteral* node) {
|
| + fragment_ = Constant(H.DartSymbol(node->value()));
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitSymbolLiteral(SymbolLiteral* node) {
|
| + fragment_ = Constant(constant_evaluator_.EvaluateExpression(node));
|
| +}
|
| +
|
| +
|
| +AbstractType& DartTypeTranslator::TranslateType(DartType* node) {
|
| + node->AcceptDartTypeVisitor(this);
|
| +
|
| + // We return a new `ZoneHandle` here on purpose: The intermediate language
|
| + // instructions do not make a copy of the handle, so we do it.
|
| + return dart::AbstractType::ZoneHandle(Z, result_.raw());
|
| +}
|
| +
|
| +
|
| +AbstractType& DartTypeTranslator::TranslateTypeWithoutFinalization(
|
| + DartType* node) {
|
| + bool saved_finalize = finalize_;
|
| + finalize_ = false;
|
| + H.SetFinalize(false);
|
| + AbstractType& result = TranslateType(node);
|
| + finalize_ = saved_finalize;
|
| + H.SetFinalize(saved_finalize);
|
| + return result;
|
| +}
|
| +
|
| +
|
| +void DartTypeTranslator::VisitInvalidType(InvalidType* node) {
|
| + result_ = ClassFinalizer::NewFinalizedMalformedType(
|
| + Error::Handle(Z), // No previous error.
|
| + dart::Script::Handle(Z, dart::Script::null()), TokenPosition::kNoSource,
|
| + "[InvalidType] in Kernel IR.");
|
| +}
|
| +
|
| +
|
| +void DartTypeTranslator::VisitFunctionType(FunctionType* node) {
|
| + // TODO(27590): Fix function types which are composed of malformed types.
|
| + // We might need to convert them to dynamic types instead of making the
|
| + // function type malformed.
|
| + const Function& signature_function = Function::ZoneHandle(
|
| + Z, Function::NewSignatureFunction(*active_class_->klass,
|
| + TokenPosition::kNoSource));
|
| +
|
| + node->return_type()->AcceptDartTypeVisitor(this);
|
| + if (result_.IsMalformed()) return;
|
| + signature_function.set_result_type(result_);
|
| +
|
| + const intptr_t positional_count = node->positional_parameters().length();
|
| + const intptr_t named_count = node->named_parameters().length();
|
| + const intptr_t all_count = positional_count + named_count;
|
| + const intptr_t required_count = node->required_parameter_count();
|
| +
|
| + // The additional first parameter is the receiver type (set to dynamic).
|
| + signature_function.set_num_fixed_parameters(1 + required_count);
|
| + signature_function.SetNumOptionalParameters(
|
| + all_count - required_count, positional_count > required_count);
|
| +
|
| + const Array& parameter_types =
|
| + Array::Handle(Z, Array::New(1 + all_count, Heap::kOld));
|
| + signature_function.set_parameter_types(parameter_types);
|
| + const Array& parameter_names =
|
| + Array::Handle(Z, Array::New(1 + all_count, Heap::kOld));
|
| + signature_function.set_parameter_names(parameter_names);
|
| +
|
| + intptr_t pos = 0;
|
| + parameter_types.SetAt(pos, AbstractType::dynamic_type());
|
| + parameter_names.SetAt(pos, H.DartSymbol("_receiver_"));
|
| + pos++;
|
| + for (intptr_t i = 0; i < positional_count; i++, pos++) {
|
| + node->positional_parameters()[i]->AcceptDartTypeVisitor(this);
|
| + if (result_.IsMalformed()) return;
|
| + parameter_types.SetAt(pos, result_);
|
| + parameter_names.SetAt(pos, H.DartSymbol("noname"));
|
| + }
|
| + for (intptr_t i = 0; i < named_count; i++, pos++) {
|
| + Tuple<String, DartType>* tuple = node->named_parameters()[i];
|
| + tuple->second()->AcceptDartTypeVisitor(this);
|
| + if (result_.IsMalformed()) return;
|
| + parameter_types.SetAt(pos, result_);
|
| + parameter_names.SetAt(pos, H.DartSymbol(tuple->first()));
|
| + }
|
| +
|
| + Type& signature_type =
|
| + Type::ZoneHandle(Z, signature_function.SignatureType());
|
| +
|
| + if (finalize_) {
|
| + signature_type ^= ClassFinalizer::FinalizeType(
|
| + *active_class_->klass, signature_type, ClassFinalizer::kCanonicalize);
|
| + }
|
| + signature_function.SetSignatureType(signature_type);
|
| +
|
| + result_ = signature_type.raw();
|
| +}
|
| +
|
| +
|
| +void DartTypeTranslator::VisitTypeParameterType(TypeParameterType* node) {
|
| + ASSERT(active_class_->kernel_class != NULL);
|
| +
|
| + List<TypeParameter>* parameters =
|
| + &active_class_->kernel_class->type_parameters();
|
| + if ((active_class_->member != NULL) && active_class_->member->IsProcedure()) {
|
| + Procedure* procedure = Procedure::Cast(active_class_->member);
|
| + if ((procedure->function() != NULL) &&
|
| + (procedure->function()->type_parameters().length() > 0)) {
|
| + //
|
| + // WARNING: This is a little hackish:
|
| + //
|
| + // We have a static factory constructor. The kernel IR gives the factory
|
| + // constructor function it's own type parameters (which are equal in name
|
| + // and number to the ones of the enclosing class).
|
| + // I.e.,
|
| + //
|
| + // class A<T> {
|
| + // factory A.x() { return new B<T>(); }
|
| + // }
|
| + //
|
| + // is basically translated to this:
|
| + //
|
| + // class A<T> {
|
| + // static A.x<T'>() { return new B<T'>(); }
|
| + // }
|
| + //
|
| + parameters = &procedure->function()->type_parameters();
|
| + }
|
| + }
|
| +
|
| + for (intptr_t i = 0; i < parameters->length(); i++) {
|
| + TypeParameter* type_parameter = (*parameters)[i];
|
| + if (node->parameter() == type_parameter) {
|
| + // The index of the type parameter in [parameters] is
|
| + // the same index into the `klass->type_parameters()` array.
|
| + result_ ^= dart::TypeArguments::Handle(
|
| + Z, active_class_->klass->type_parameters())
|
| + .TypeAt(i);
|
| + return;
|
| + }
|
| + }
|
| +
|
| + UNREACHABLE();
|
| +}
|
| +
|
| +
|
| +void DartTypeTranslator::VisitInterfaceType(InterfaceType* node) {
|
| + // NOTE: That an interface type like `T<A, B>` is considered to be
|
| + // malformed iff `T` is malformed.
|
| + // => We therefore ignore errors in `A` or `B`.
|
| + const TypeArguments& type_arguments = TranslateTypeArguments(
|
| + node->type_arguments().raw_array(), node->type_arguments().length());
|
| +
|
| + const dart::Class& klass =
|
| + dart::Class::Handle(Z, H.LookupClassByKernelClass(node->klass()));
|
| +
|
| + result_ = Type::New(klass, type_arguments, TokenPosition::kNoSource);
|
| + result_.SetIsResolved();
|
| + if (finalize_) {
|
| + result_ = ClassFinalizer::FinalizeType(klass, result_,
|
| + ClassFinalizer::kCanonicalize);
|
| + }
|
| +}
|
| +
|
| +
|
| +void DartTypeTranslator::VisitDynamicType(DynamicType* node) {
|
| + result_ = Object::dynamic_type().raw();
|
| +}
|
| +
|
| +
|
| +void DartTypeTranslator::VisitVoidType(VoidType* node) {
|
| + result_ = Object::void_type().raw();
|
| +}
|
| +
|
| +
|
| +const TypeArguments& DartTypeTranslator::TranslateTypeArguments(
|
| + DartType** dart_types, intptr_t length) {
|
| + bool only_dynamic = true;
|
| + for (intptr_t i = 0; i < length; i++) {
|
| + if (!dart_types[i]->IsDynamicType()) {
|
| + only_dynamic = false;
|
| + break;
|
| + }
|
| + }
|
| + TypeArguments& type_arguments = TypeArguments::ZoneHandle(Z);
|
| + if (!only_dynamic) {
|
| + type_arguments = TypeArguments::New(length);
|
| + for (intptr_t i = 0; i < length; i++) {
|
| + dart_types[i]->AcceptDartTypeVisitor(this);
|
| + if (result_.IsMalformed()) {
|
| + type_arguments = TypeArguments::null();
|
| + return type_arguments;
|
| + }
|
| + type_arguments.SetTypeAt(i, result_);
|
| + }
|
| + if (finalize_) {
|
| + type_arguments = type_arguments.Canonicalize();
|
| + }
|
| + }
|
| + return type_arguments;
|
| +}
|
| +
|
| +
|
| +const TypeArguments& DartTypeTranslator::TranslateInstantiatedTypeArguments(
|
| + const dart::Class& receiver_class, DartType** receiver_type_arguments,
|
| + intptr_t length) {
|
| + const TypeArguments& type_arguments =
|
| + TranslateTypeArguments(receiver_type_arguments, length);
|
| + if (type_arguments.IsNull()) return type_arguments;
|
| +
|
| + // We make a temporary [Type] object and use `ClassFinalizer::FinalizeType` to
|
| + // finalize the argument types.
|
| + // (This can for example make the [type_arguments] vector larger)
|
| + Type& type = Type::Handle(
|
| + Z, Type::New(receiver_class, type_arguments, TokenPosition::kNoSource));
|
| + if (finalize_) {
|
| + type ^= ClassFinalizer::FinalizeType(
|
| + *active_class_->klass, type, ClassFinalizer::kCanonicalizeWellFormed);
|
| + }
|
| +
|
| + const TypeArguments& instantiated_type_arguments =
|
| + TypeArguments::ZoneHandle(Z, type.arguments());
|
| + return instantiated_type_arguments;
|
| +}
|
| +
|
| +
|
| +const Type& DartTypeTranslator::ReceiverType(const dart::Class& klass) {
|
| + ASSERT(!klass.IsNull());
|
| + ASSERT(!klass.IsTypedefClass());
|
| + // Note that if klass is _Closure, the returned type will be _Closure,
|
| + // and not the signature type.
|
| + Type& type = Type::ZoneHandle(Z, klass.CanonicalType());
|
| + if (!type.IsNull()) {
|
| + return type;
|
| + }
|
| + type = Type::New(klass, TypeArguments::Handle(Z, klass.type_parameters()),
|
| + klass.token_pos());
|
| + return type;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitTypeLiteral(TypeLiteral* node) {
|
| + const AbstractType& type = T.TranslateType(node->type());
|
| + if (type.IsMalformed()) H.ReportError("Malformed type literal");
|
| +
|
| + fragment_ = Constant(type);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitVariableGet(VariableGet* node) {
|
| + fragment_ = LoadLocal(LookupVariable(node->variable()));
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitVariableSet(VariableSet* node) {
|
| + Fragment instructions = TranslateExpression(node->expression());
|
| + // The IR should not include assignments to final or const variables.
|
| + // This is https://github.com/dart-lang/rasta/issues/83.
|
| + //
|
| + // TODO(27590): simply ASSERT that the variable is not const or final
|
| + // when that issue is fixed.
|
| + fragment_ = instructions +
|
| + ((node->variable()->IsFinal() || node->variable()->IsConst())
|
| + ? Drop() + ThrowNoSuchMethodError()
|
| + : StoreLocal(LookupVariable(node->variable())));
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitStaticGet(StaticGet* node) {
|
| + Member* target = node->target();
|
| + if (target->IsField()) {
|
| + Field* kernel_field = Field::Cast(target);
|
| + const dart::Field& field =
|
| + dart::Field::ZoneHandle(Z, H.LookupFieldByKernelField(kernel_field));
|
| + if (kernel_field->IsConst()) {
|
| + fragment_ = Constant(constant_evaluator_.EvaluateExpression(node));
|
| + } else {
|
| + const dart::Class& owner = dart::Class::Handle(Z, field.Owner());
|
| + const dart::String& getter_name = H.DartGetterName(kernel_field->name());
|
| + const Function& getter =
|
| + Function::ZoneHandle(Z, owner.LookupStaticFunction(getter_name));
|
| + if (getter.IsNull() || !field.has_initializer()) {
|
| + Fragment instructions = Constant(field);
|
| + fragment_ = instructions + LoadStaticField();
|
| + } else {
|
| + // TODO(27590): figure out how to trigger this case and add tests.
|
| + fragment_ = StaticCall(getter, 0);
|
| + }
|
| + }
|
| + } else {
|
| + Procedure* procedure = Procedure::Cast(target);
|
| + const Function& target = Function::ZoneHandle(
|
| + Z, H.LookupStaticMethodByKernelProcedure(procedure));
|
| +
|
| + if (procedure->kind() == Procedure::kGetter) {
|
| + fragment_ = StaticCall(target, 0);
|
| + } else if (procedure->kind() == Procedure::kMethod) {
|
| + ASSERT(procedure->IsStatic());
|
| + Function& closure_function =
|
| + Function::ZoneHandle(Z, target.ImplicitClosureFunction());
|
| + closure_function.set_kernel_function(target.kernel_function());
|
| + const Instance& closure =
|
| + Instance::ZoneHandle(Z, closure_function.ImplicitStaticClosure());
|
| + fragment_ = Constant(closure);
|
| + } else {
|
| + UNIMPLEMENTED();
|
| + }
|
| + }
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitStaticSet(StaticSet* node) {
|
| + Member* target = node->target();
|
| + if (target->IsField()) {
|
| + Field* kernel_field = Field::Cast(target);
|
| + const dart::Field& field =
|
| + dart::Field::ZoneHandle(Z, H.LookupFieldByKernelField(kernel_field));
|
| + Fragment instructions = TranslateExpression(node->expression());
|
| + LocalVariable* variable = MakeTemporary();
|
| + instructions += LoadLocal(variable);
|
| + fragment_ = instructions + StoreStaticField(field);
|
| + } else {
|
| + ASSERT(target->IsProcedure());
|
| +
|
| + // Evaluate the expression on the right hand side.
|
| + Fragment instructions = TranslateExpression(node->expression());
|
| + LocalVariable* variable = MakeTemporary();
|
| +
|
| + // Prepare argument.
|
| + instructions += LoadLocal(variable);
|
| + instructions += PushArgument();
|
| +
|
| + // Invoke the setter function.
|
| + Procedure* procedure = Procedure::Cast(target);
|
| + const Function& target = Function::ZoneHandle(
|
| + Z, H.LookupStaticMethodByKernelProcedure(procedure));
|
| + instructions += StaticCall(target, 1);
|
| +
|
| + // Drop the unused result & leave the stored value on the stack.
|
| + fragment_ = instructions + Drop();
|
| + }
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitPropertyGet(PropertyGet* node) {
|
| + Fragment instructions = TranslateExpression(node->receiver());
|
| + instructions += PushArgument();
|
| + const dart::String& getter_name = H.DartGetterName(node->name());
|
| + fragment_ = instructions + InstanceCall(getter_name, Token::kGET, 1);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitPropertySet(PropertySet* node) {
|
| + Fragment instructions(NullConstant());
|
| + LocalVariable* variable = MakeTemporary();
|
| + instructions += TranslateExpression(node->receiver());
|
| + instructions += PushArgument();
|
| + instructions += TranslateExpression(node->value());
|
| + instructions += StoreLocal(variable);
|
| + instructions += PushArgument();
|
| +
|
| + const dart::String& setter_name = H.DartSetterName(node->name());
|
| + instructions += InstanceCall(setter_name, Token::kSET, 2);
|
| + fragment_ = instructions + Drop();
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitDirectPropertyGet(DirectPropertyGet* node) {
|
| + Function& target = Function::ZoneHandle(Z);
|
| + if (node->target()->IsProcedure()) {
|
| + Procedure* kernel_procedure = Procedure::Cast(node->target());
|
| + Name* kernel_name = kernel_procedure->name();
|
| + if (kernel_procedure->kind() == Procedure::kGetter) {
|
| + target =
|
| + LookupMethodByMember(kernel_procedure, H.DartGetterName(kernel_name));
|
| + } else {
|
| + target =
|
| + LookupMethodByMember(kernel_procedure, H.DartMethodName(kernel_name));
|
| + target = target.ImplicitClosureFunction();
|
| + ASSERT(!target.IsNull());
|
| + fragment_ = BuildImplicitClosureCreation(target);
|
| + return;
|
| + }
|
| + } else {
|
| + ASSERT(node->target()->IsField());
|
| + const dart::String& getter_name = H.DartGetterName(node->target()->name());
|
| + target = LookupMethodByMember(node->target(), getter_name);
|
| + ASSERT(target.IsGetterFunction() || target.IsImplicitGetterFunction());
|
| + }
|
| +
|
| + Fragment instructions = TranslateExpression(node->receiver());
|
| + instructions += PushArgument();
|
| + fragment_ = instructions + StaticCall(target, 1);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitDirectPropertySet(DirectPropertySet* node) {
|
| + const dart::String& method_name = H.DartSetterName(node->target()->name());
|
| + const Function& target = Function::ZoneHandle(
|
| + Z, LookupMethodByMember(node->target(), method_name));
|
| + ASSERT(target.IsSetterFunction() || target.IsImplicitSetterFunction());
|
| +
|
| + Fragment instructions(NullConstant());
|
| + LocalVariable* value = MakeTemporary();
|
| + instructions += TranslateExpression(node->receiver());
|
| + instructions += PushArgument();
|
| + instructions += TranslateExpression(node->value());
|
| + instructions += StoreLocal(value);
|
| + instructions += PushArgument();
|
| + instructions += StaticCall(target, 2);
|
| +
|
| + fragment_ = instructions + Drop();
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitStaticInvocation(StaticInvocation* node) {
|
| + const Function& target = Function::ZoneHandle(
|
| + Z, H.LookupStaticMethodByKernelProcedure(node->procedure()));
|
| + const dart::Class& klass = dart::Class::ZoneHandle(Z, target.Owner());
|
| + intptr_t argument_count = node->arguments()->count();
|
| + if (target.IsGenerativeConstructor() || target.IsFactory()) {
|
| + // The VM requires a TypeArguments object as first parameter for
|
| + // every factory constructor.
|
| + ++argument_count;
|
| + }
|
| + List<NamedExpression>& named = node->arguments()->named();
|
| + const Array& argument_names = H.ArgumentNames(&named);
|
| +
|
| + Fragment instructions;
|
| + if (!target.AreValidArguments(argument_count, argument_names, NULL)) {
|
| + // An argument mismatch for a static invocation really should not occur
|
| + // in the IR. This is issue https://github.com/dart-lang/rasta/issues/76.
|
| + //
|
| + // TODO(27590): Change this to an ASSERT when that issue is fixed.
|
| + List<Expression>& positional = node->arguments()->positional();
|
| + for (intptr_t i = 0; i < positional.length(); ++i) {
|
| + instructions += TranslateExpression(positional[i]);
|
| + instructions += Drop();
|
| + }
|
| +
|
| + for (intptr_t i = 0; i < named.length(); ++i) {
|
| + instructions += TranslateExpression(named[i]->expression());
|
| + instructions += Drop();
|
| + }
|
| +
|
| + fragment_ = instructions + ThrowNoSuchMethodError();
|
| + return;
|
| + }
|
| +
|
| + LocalVariable* instance_variable = NULL;
|
| +
|
| + // If we cross the Kernel -> VM core library boundary, a [StaticInvocation]
|
| + // can appear, but the thing we're calling is not a static method, but a
|
| + // factory constructor.
|
| + // The `H.LookupStaticmethodByKernelProcedure` will potentially resolve to the
|
| + // forwarded constructor.
|
| + // In that case we'll make an instance and pass it as first argument.
|
| + //
|
| + // TODO(27590): Get rid of this after we're using core libraries compiled
|
| + // into Kernel.
|
| + if (target.IsGenerativeConstructor()) {
|
| + if (klass.NumTypeArguments() > 0) {
|
| + List<DartType>& kernel_type_arguments = node->arguments()->types();
|
| + const TypeArguments& type_arguments =
|
| + T.TranslateInstantiatedTypeArguments(
|
| + klass, kernel_type_arguments.raw_array(),
|
| + kernel_type_arguments.length());
|
| + instructions += TranslateInstantiatedTypeArguments(type_arguments);
|
| + instructions += PushArgument();
|
| + instructions += AllocateObject(klass, 1);
|
| + } else {
|
| + instructions += AllocateObject(klass, 0);
|
| + }
|
| +
|
| + instance_variable = MakeTemporary();
|
| +
|
| + instructions += LoadLocal(instance_variable);
|
| + instructions += PushArgument();
|
| + } else if (target.IsFactory()) {
|
| + // The VM requires currently a TypeArguments object as first parameter for
|
| + // every factory constructor :-/ !
|
| + //
|
| + // TODO(27590): Get rid of this after we're using core libraries compiled
|
| + // into Kernel.
|
| + List<DartType>& kernel_type_arguments = node->arguments()->types();
|
| +
|
| + const TypeArguments& type_arguments = T.TranslateInstantiatedTypeArguments(
|
| + klass, kernel_type_arguments.raw_array(),
|
| + kernel_type_arguments.length());
|
| +
|
| + instructions += TranslateInstantiatedTypeArguments(type_arguments);
|
| + instructions += PushArgument();
|
| + } else {
|
| + ASSERT(node->arguments()->types().length() == 0);
|
| + }
|
| +
|
| + // Special case identical(x, y) call.
|
| + // TODO(27590) consider moving this into the inliner and force inline it
|
| + // there.
|
| + if (klass.IsTopLevel() && (klass.library() == dart::Library::CoreLibrary()) &&
|
| + (target.name() == Symbols::Identical().raw())) {
|
| + ASSERT(argument_count == 2);
|
| +
|
| + List<Expression>& positional = node->arguments()->positional();
|
| + for (intptr_t i = 0; i < positional.length(); ++i) {
|
| + instructions += TranslateExpression(positional[i]);
|
| + }
|
| + instructions += StrictCompare(Token::kEQ_STRICT, /*number_check=*/true);
|
| + } else {
|
| + instructions += TranslateArguments(node->arguments(), NULL);
|
| + instructions += StaticCall(target, argument_count, argument_names);
|
| +
|
| + if (target.IsGenerativeConstructor()) {
|
| + // Drop the result of the constructor call and leave [instance_variable]
|
| + // on top-of-stack.
|
| + instructions += Drop();
|
| + }
|
| + }
|
| +
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +static bool IsNumberLiteral(Node* node) {
|
| + return node->IsIntLiteral() || node->IsDoubleLiteral();
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitMethodInvocation(MethodInvocation* node) {
|
| + const dart::String& name = H.DartMethodName(node->name());
|
| + const intptr_t argument_count = node->arguments()->count() + 1;
|
| + const Token::Kind token_kind = MethodKind(name);
|
| + if (IsNumberLiteral(node->receiver())) {
|
| + if ((argument_count == 1) && (token_kind == Token::kNEGATE)) {
|
| + const Object& result = constant_evaluator_.EvaluateExpressionSafe(node);
|
| + if (!result.IsError()) {
|
| + fragment_ = Constant(result);
|
| + return;
|
| + }
|
| + } else if ((argument_count == 2) &&
|
| + Token::IsBinaryArithmeticOperator(token_kind) &&
|
| + IsNumberLiteral(node->arguments()->positional()[0])) {
|
| + const Object& result = constant_evaluator_.EvaluateExpressionSafe(node);
|
| + if (!result.IsError()) {
|
| + fragment_ = Constant(result);
|
| + return;
|
| + }
|
| + }
|
| + }
|
| +
|
| + Fragment instructions = TranslateExpression(node->receiver());
|
| + instructions += PushArgument();
|
| +
|
| + // Dart does not support generic methods yet.
|
| + ASSERT(node->arguments()->types().length() == 0);
|
| +
|
| + Array& argument_names = Array::ZoneHandle(Z);
|
| + instructions += TranslateArguments(node->arguments(), &argument_names);
|
| +
|
| + intptr_t num_args_checked = 1;
|
| + // If we have a special operation (e.g. +/-/==) we mark both arguments as
|
| + // to be checked.
|
| + if (token_kind != Token::kILLEGAL) {
|
| + ASSERT(argument_count <= 2);
|
| + num_args_checked = argument_count;
|
| + }
|
| +
|
| + fragment_ = instructions + InstanceCall(name, token_kind, argument_count,
|
| + argument_names, num_args_checked);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitDirectMethodInvocation(
|
| + DirectMethodInvocation* node) {
|
| + const dart::String& method_name = H.DartMethodName(node->target()->name());
|
| + const Function& target = Function::ZoneHandle(
|
| + Z, LookupMethodByMember(node->target(), method_name));
|
| +
|
| + intptr_t argument_count = node->arguments()->count() + 1;
|
| + Array& argument_names = Array::ZoneHandle(Z);
|
| +
|
| + ASSERT(node->arguments()->types().length() == 0);
|
| + Fragment instructions = TranslateExpression(node->receiver());
|
| + instructions += PushArgument();
|
| + instructions += TranslateArguments(node->arguments(), &argument_names);
|
| + fragment_ = instructions + StaticCall(target, argument_count, argument_names);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitConstructorInvocation(ConstructorInvocation* node) {
|
| + if (node->is_const()) {
|
| + fragment_ =
|
| + Constant(constant_evaluator_.EvaluateConstructorInvocation(node));
|
| + return;
|
| + }
|
| +
|
| + Class* kernel_class = Class::Cast(node->target()->parent());
|
| +
|
| + dart::Class& klass =
|
| + dart::Class::ZoneHandle(Z, H.LookupClassByKernelClass(kernel_class));
|
| +
|
| + Fragment instructions;
|
| + if (klass.NumTypeArguments() > 0) {
|
| + List<DartType>& kernel_type_arguments = node->arguments()->types();
|
| + const TypeArguments& type_arguments = T.TranslateInstantiatedTypeArguments(
|
| + klass, kernel_type_arguments.raw_array(),
|
| + kernel_type_arguments.length());
|
| +
|
| + if (type_arguments.IsNull() || type_arguments.IsInstantiated()) {
|
| + instructions += TranslateInstantiatedTypeArguments(type_arguments);
|
| + } else {
|
| + if (!klass.IsGeneric()) {
|
| + Type& type = Type::ZoneHandle(Z, T.ReceiverType(klass).raw());
|
| +
|
| + // TODO(27590): Can we move this code into [ReceiverType]?
|
| + type ^= ClassFinalizer::FinalizeType(*active_class_.klass, type,
|
| + ClassFinalizer::kFinalize);
|
| + ASSERT(!type.IsMalformedOrMalbounded());
|
| +
|
| + TypeArguments& canonicalized_type_arguments =
|
| + TypeArguments::ZoneHandle(Z, type.arguments());
|
| + canonicalized_type_arguments =
|
| + canonicalized_type_arguments.Canonicalize();
|
| + instructions += Constant(canonicalized_type_arguments);
|
| + } else {
|
| + instructions += TranslateInstantiatedTypeArguments(type_arguments);
|
| + }
|
| + }
|
| +
|
| + instructions += PushArgument();
|
| + instructions += AllocateObject(klass, 1);
|
| + } else {
|
| + instructions += AllocateObject(klass, 0);
|
| + }
|
| + LocalVariable* variable = MakeTemporary();
|
| +
|
| + instructions += LoadLocal(variable);
|
| + instructions += PushArgument();
|
| +
|
| + Array& argument_names = Array::ZoneHandle(Z);
|
| + instructions += TranslateArguments(node->arguments(), &argument_names);
|
| +
|
| + const Function& target = Function::ZoneHandle(
|
| + Z, H.LookupConstructorByKernelConstructor(klass, node->target()));
|
| + intptr_t argument_count = node->arguments()->count() + 1;
|
| + instructions += StaticCall(target, argument_count, argument_names);
|
| + fragment_ = instructions + Drop();
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitIsExpression(IsExpression* node) {
|
| + Fragment instructions = TranslateExpression(node->operand());
|
| +
|
| + // The VM does not like an instanceOf call with a dynamic type. We need to
|
| + // special case this situation.
|
| + const Type& object_type = Type::Handle(Z, Type::ObjectType());
|
| + const AbstractType& type = T.TranslateType(node->type());
|
| + if (type.IsMalformed()) {
|
| + instructions += Drop();
|
| + instructions += ThrowTypeError();
|
| + fragment_ = instructions;
|
| + return;
|
| + }
|
| +
|
| + if (type.IsInstantiated() &&
|
| + object_type.IsSubtypeOf(type, NULL, NULL, Heap::kOld)) {
|
| + // Evaluate the expression on the left but ignore it's result.
|
| + instructions += Drop();
|
| +
|
| + // Let condition be always true.
|
| + instructions += Constant(Bool::True());
|
| + } else {
|
| + instructions += PushArgument();
|
| +
|
| + if (!type.IsInstantiated()) {
|
| + instructions += LoadInstantiatorTypeArguments();
|
| + } else {
|
| + instructions += NullConstant();
|
| + }
|
| + instructions += PushArgument(); // Type arguments.
|
| +
|
| + instructions += Constant(type);
|
| + instructions += PushArgument(); // Type.
|
| +
|
| + instructions += Constant(Bool::False());
|
| + instructions += PushArgument(); // Negate?.
|
| +
|
| + instructions +=
|
| + InstanceCall(dart::Library::PrivateCoreLibName(Symbols::_instanceOf()),
|
| + Token::kIS, 4);
|
| + }
|
| +
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitAsExpression(AsExpression* node) {
|
| + Fragment instructions = TranslateExpression(node->operand());
|
| +
|
| + // The VM does not like an Object_as call with a dynamic type. We need to
|
| + // special case this situation.
|
| + const Type& object_type = Type::Handle(Z, Type::ObjectType());
|
| + const AbstractType& type = T.TranslateType(node->type());
|
| + if (type.IsMalformed()) {
|
| + instructions += Drop();
|
| + instructions += ThrowTypeError();
|
| + fragment_ = instructions;
|
| + return;
|
| + }
|
| +
|
| + if (type.IsInstantiated() &&
|
| + object_type.IsSubtypeOf(type, NULL, NULL, Heap::kOld)) {
|
| + // We already evaluated the operand on the left and just leave it there as
|
| + // the result of the `obj as dynamic` expression.
|
| + } else {
|
| + instructions += PushArgument();
|
| +
|
| + if (!type.IsInstantiated()) {
|
| + instructions += LoadInstantiatorTypeArguments();
|
| + } else {
|
| + instructions += NullConstant();
|
| + }
|
| + instructions += PushArgument(); // Type arguments.
|
| +
|
| + instructions += Constant(type);
|
| + instructions += PushArgument(); // Type.
|
| +
|
| + instructions += InstanceCall(
|
| + dart::Library::PrivateCoreLibName(Symbols::_as()), Token::kAS, 3);
|
| + }
|
| +
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitConditionalExpression(ConditionalExpression* node) {
|
| + bool negate;
|
| + Fragment instructions = TranslateCondition(node->condition(), &negate);
|
| +
|
| + TargetEntryInstr* then_entry;
|
| + TargetEntryInstr* otherwise_entry;
|
| + instructions += BranchIfTrue(&then_entry, &otherwise_entry, negate);
|
| +
|
| + Value* top = stack_;
|
| + Fragment then_fragment(then_entry);
|
| + then_fragment += TranslateExpression(node->then());
|
| + then_fragment += StoreLocal(parsed_function_->expression_temp_var());
|
| + then_fragment += Drop();
|
| +
|
| + ASSERT(stack_ == top);
|
| + Fragment otherwise_fragment(otherwise_entry);
|
| + otherwise_fragment += TranslateExpression(node->otherwise());
|
| + otherwise_fragment += StoreLocal(parsed_function_->expression_temp_var());
|
| + otherwise_fragment += Drop();
|
| +
|
| + JoinEntryInstr* join = BuildJoinEntry();
|
| + then_fragment += Goto(join);
|
| + otherwise_fragment += Goto(join);
|
| +
|
| + fragment_ = Fragment(instructions.entry, join) +
|
| + LoadLocal(parsed_function_->expression_temp_var());
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitLogicalExpression(LogicalExpression* node) {
|
| + bool negate;
|
| + Fragment instructions = TranslateCondition(node->left(), &negate);
|
| + TargetEntryInstr* right_entry;
|
| + TargetEntryInstr* constant_entry;
|
| +
|
| + if (node->op() == LogicalExpression::kAnd) {
|
| + instructions += BranchIfTrue(&right_entry, &constant_entry, negate);
|
| + } else {
|
| + instructions += BranchIfTrue(&constant_entry, &right_entry, negate);
|
| + }
|
| +
|
| + Value* top = stack_;
|
| + Fragment right_fragment(right_entry);
|
| + right_fragment += TranslateCondition(node->right(), &negate);
|
| + right_fragment += Constant(Bool::True());
|
| + right_fragment +=
|
| + StrictCompare(negate ? Token::kNE_STRICT : Token::kEQ_STRICT);
|
| + right_fragment += StoreLocal(parsed_function_->expression_temp_var());
|
| + right_fragment += Drop();
|
| +
|
| + ASSERT(top == stack_);
|
| + Fragment constant_fragment(constant_entry);
|
| + constant_fragment +=
|
| + Constant(Bool::Get(node->op() == LogicalExpression::kOr));
|
| + constant_fragment += StoreLocal(parsed_function_->expression_temp_var());
|
| + constant_fragment += Drop();
|
| +
|
| + JoinEntryInstr* join = BuildJoinEntry();
|
| + right_fragment += Goto(join);
|
| + constant_fragment += Goto(join);
|
| +
|
| + fragment_ = Fragment(instructions.entry, join) +
|
| + LoadLocal(parsed_function_->expression_temp_var());
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitNot(Not* node) {
|
| + Fragment instructions = TranslateExpression(node->expression());
|
| + fragment_ = instructions + BooleanNegate();
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitThisExpression(ThisExpression* node) {
|
| + fragment_ = LoadLocal(scopes_->this_variable);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitStringConcatenation(StringConcatenation* node) {
|
| + List<Expression>& expressions = node->expressions();
|
| +
|
| + Fragment instructions;
|
| +
|
| + // The type arguments for CreateArray.
|
| + instructions += Constant(TypeArguments::ZoneHandle(Z));
|
| + instructions += IntConstant(expressions.length());
|
| + instructions += CreateArray();
|
| + LocalVariable* array = MakeTemporary();
|
| +
|
| + for (intptr_t i = 0; i < node->expressions().length(); i++) {
|
| + instructions += LoadLocal(array);
|
| + instructions += IntConstant(i);
|
| + instructions += TranslateExpression(node->expressions()[i]);
|
| + instructions += StoreIndexed(kArrayCid);
|
| + instructions += Drop();
|
| + }
|
| +
|
| + instructions += StringInterpolate();
|
| +
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitListLiteral(ListLiteral* node) {
|
| + if (node->is_const()) {
|
| + fragment_ = Constant(constant_evaluator_.EvaluateListLiteral(node));
|
| + return;
|
| + }
|
| +
|
| + DartType* types[] = {node->type()};
|
| + const TypeArguments& type_arguments = T.TranslateTypeArguments(types, 1);
|
| +
|
| + // The type argument for the factory call.
|
| + Fragment instructions = TranslateInstantiatedTypeArguments(type_arguments);
|
| + instructions += PushArgument();
|
| + List<Expression>& expressions = node->expressions();
|
| + if (expressions.length() == 0) {
|
| + instructions += Constant(Object::empty_array());
|
| + } else {
|
| + // The type arguments for CreateArray.
|
| + instructions += Constant(TypeArguments::ZoneHandle(Z));
|
| + instructions += IntConstant(expressions.length());
|
| + instructions += CreateArray();
|
| +
|
| + LocalVariable* array = MakeTemporary();
|
| + for (intptr_t i = 0; i < expressions.length(); ++i) {
|
| + instructions += LoadLocal(array);
|
| + instructions += IntConstant(i);
|
| + instructions += TranslateExpression(expressions[i]);
|
| + instructions += StoreIndexed(kArrayCid);
|
| + instructions += Drop();
|
| + }
|
| + }
|
| + instructions += PushArgument(); // The array.
|
| +
|
| + const dart::Class& factory_class =
|
| + dart::Class::Handle(Z, dart::Library::LookupCoreClass(Symbols::List()));
|
| + const Function& factory_method = Function::ZoneHandle(
|
| + Z, factory_class.LookupFactory(
|
| + dart::Library::PrivateCoreLibName(Symbols::ListLiteralFactory())));
|
| + fragment_ = instructions + StaticCall(factory_method, 2);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitMapLiteral(MapLiteral* node) {
|
| + if (node->is_const()) {
|
| + fragment_ = Constant(constant_evaluator_.EvaluateMapLiteral(node));
|
| + return;
|
| + }
|
| +
|
| + const dart::Class& map_class =
|
| + dart::Class::Handle(Z, dart::Library::LookupCoreClass(Symbols::Map()));
|
| + const Function& factory_method = Function::ZoneHandle(
|
| + Z, map_class.LookupFactory(
|
| + dart::Library::PrivateCoreLibName(Symbols::MapLiteralFactory())));
|
| +
|
| + DartType* types[] = {node->key_type(), node->value_type()};
|
| + const TypeArguments& type_arguments = T.TranslateTypeArguments(types, 2);
|
| +
|
| + // The type argument for the factory call `new Map<K, V>._fromLiteral(List)`.
|
| + Fragment instructions = TranslateInstantiatedTypeArguments(type_arguments);
|
| + instructions += PushArgument();
|
| +
|
| + List<MapEntry>& entries = node->entries();
|
| + if (entries.length() == 0) {
|
| + instructions += Constant(Object::empty_array());
|
| + } else {
|
| + // The type arguments for `new List<X>(int len)`.
|
| + instructions += Constant(TypeArguments::ZoneHandle(Z));
|
| +
|
| + // We generate a list of tuples, i.e. [key1, value1, ..., keyN, valueN].
|
| + instructions += IntConstant(2 * entries.length());
|
| + instructions += CreateArray();
|
| +
|
| + LocalVariable* array = MakeTemporary();
|
| + for (intptr_t i = 0; i < entries.length(); ++i) {
|
| + instructions += LoadLocal(array);
|
| + instructions += IntConstant(2 * i);
|
| + instructions += TranslateExpression(entries[i]->key());
|
| + instructions += StoreIndexed(kArrayCid);
|
| + instructions += Drop();
|
| +
|
| + instructions += LoadLocal(array);
|
| + instructions += IntConstant(2 * i + 1);
|
| + instructions += TranslateExpression(entries[i]->value());
|
| + instructions += StoreIndexed(kArrayCid);
|
| + instructions += Drop();
|
| + }
|
| + }
|
| + instructions += PushArgument(); // The array.
|
| +
|
| + fragment_ = instructions + StaticCall(factory_method, 2);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitFunctionExpression(FunctionExpression* node) {
|
| + fragment_ = TranslateFunctionNode(node->function(), node);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitLet(Let* node) {
|
| + Fragment instructions = TranslateStatement(node->variable());
|
| + instructions += TranslateExpression(node->body());
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitThrow(Throw* node) {
|
| + Fragment instructions;
|
| +
|
| + instructions += TranslateExpression(node->expression());
|
| + instructions += PushArgument();
|
| + instructions += ThrowException();
|
| + ASSERT(instructions.is_closed());
|
| +
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitRethrow(Rethrow* node) {
|
| + Fragment instructions;
|
| +
|
| + instructions += LoadLocal(catch_block_->exception_var());
|
| + instructions += PushArgument();
|
| + instructions += LoadLocal(catch_block_->stack_trace_var());
|
| + instructions += PushArgument();
|
| + instructions += RethrowException(catch_block_->catch_try_index());
|
| +
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitBlockExpression(BlockExpression* node) {
|
| + Fragment instructions = TranslateStatement(node->body());
|
| + instructions += TranslateExpression(node->value());
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::TranslateArguments(Arguments* node,
|
| + Array* argument_names) {
|
| + Fragment instructions;
|
| +
|
| + List<Expression>& positional = node->positional();
|
| + for (intptr_t i = 0; i < positional.length(); ++i) {
|
| + instructions += TranslateExpression(positional[i]);
|
| + instructions += PushArgument();
|
| + }
|
| +
|
| + List<NamedExpression>& named = node->named();
|
| + if (argument_names != NULL) {
|
| + *argument_names = H.ArgumentNames(&named).raw();
|
| + }
|
| + for (intptr_t i = 0; i < named.length(); ++i) {
|
| + NamedExpression* named_expression = named[i];
|
| + instructions += TranslateExpression(named_expression->expression());
|
| + instructions += PushArgument();
|
| + }
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitInvalidStatement(InvalidStatement* node) {
|
| + H.ReportError("Invalid statements not implemented yet!");
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitEmptyStatement(EmptyStatement* node) {
|
| + fragment_ = Fragment();
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitBlock(Block* node) {
|
| + Fragment instructions;
|
| +
|
| + instructions += EnterScope(node);
|
| + List<Statement>& statements = node->statements();
|
| + for (intptr_t i = 0; i < statements.length(); ++i) {
|
| + instructions += TranslateStatement(statements[i]);
|
| + }
|
| + instructions += ExitScope(node);
|
| +
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitReturnStatement(ReturnStatement* node) {
|
| + bool inside_try_finally = try_finally_block_ != NULL;
|
| +
|
| + Fragment instructions = node->expression() == NULL
|
| + ? NullConstant()
|
| + : TranslateExpression(node->expression());
|
| + if (inside_try_finally) {
|
| + ASSERT(scopes_->finally_return_variable != NULL);
|
| + instructions += StoreLocal(scopes_->finally_return_variable);
|
| + instructions += Drop();
|
| + instructions += TranslateFinallyFinalizers(NULL, -1);
|
| + if (instructions.is_open()) {
|
| + instructions += LoadLocal(scopes_->finally_return_variable);
|
| + instructions += Return();
|
| + }
|
| + } else {
|
| + instructions += Return();
|
| + }
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitExpressionStatement(ExpressionStatement* node) {
|
| + Fragment instructions = TranslateExpression(node->expression());
|
| + instructions += Drop();
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitVariableDeclaration(VariableDeclaration* node) {
|
| + LocalVariable* variable = LookupVariable(node);
|
| + Expression* initializer = node->initializer();
|
| +
|
| + Fragment instructions;
|
| + if (initializer == NULL) {
|
| + instructions += NullConstant();
|
| + } else {
|
| + if (node->IsConst()) {
|
| + const Instance& constant_value =
|
| + constant_evaluator_.EvaluateExpression(initializer);
|
| + variable->SetConstValue(constant_value);
|
| + instructions += Constant(constant_value);
|
| + } else {
|
| + instructions += TranslateExpression(initializer);
|
| + }
|
| + }
|
| + instructions += StoreLocal(variable);
|
| + instructions += Drop();
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitFunctionDeclaration(FunctionDeclaration* node) {
|
| + Fragment instructions = TranslateFunctionNode(node->function(), node);
|
| + instructions += StoreLocal(LookupVariable(node->variable()));
|
| + instructions += Drop();
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitIfStatement(IfStatement* node) {
|
| + bool negate;
|
| + Fragment instructions = TranslateCondition(node->condition(), &negate);
|
| + TargetEntryInstr* then_entry;
|
| + TargetEntryInstr* otherwise_entry;
|
| + instructions += BranchIfTrue(&then_entry, &otherwise_entry, negate);
|
| +
|
| + Fragment then_fragment(then_entry);
|
| + then_fragment += TranslateStatement(node->then());
|
| +
|
| + Fragment otherwise_fragment(otherwise_entry);
|
| + otherwise_fragment += TranslateStatement(node->otherwise());
|
| +
|
| + if (then_fragment.is_open()) {
|
| + if (otherwise_fragment.is_open()) {
|
| + JoinEntryInstr* join = BuildJoinEntry();
|
| + then_fragment += Goto(join);
|
| + otherwise_fragment += Goto(join);
|
| + fragment_ = Fragment(instructions.entry, join);
|
| + } else {
|
| + fragment_ = Fragment(instructions.entry, then_fragment.current);
|
| + }
|
| + } else if (otherwise_fragment.is_open()) {
|
| + fragment_ = Fragment(instructions.entry, otherwise_fragment.current);
|
| + } else {
|
| + fragment_ = instructions.closed();
|
| + }
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitWhileStatement(WhileStatement* node) {
|
| + ++loop_depth_;
|
| + bool negate;
|
| + Fragment condition = TranslateCondition(node->condition(), &negate);
|
| + TargetEntryInstr* body_entry;
|
| + TargetEntryInstr* loop_exit;
|
| + condition += BranchIfTrue(&body_entry, &loop_exit, negate);
|
| +
|
| + Fragment body(body_entry);
|
| + body += TranslateStatement(node->body());
|
| +
|
| + Instruction* entry;
|
| + if (body.is_open()) {
|
| + JoinEntryInstr* join = BuildJoinEntry();
|
| + body += Goto(join);
|
| +
|
| + Fragment loop(join);
|
| + loop += CheckStackOverflow();
|
| + loop += condition;
|
| + entry = new (Z) GotoInstr(join);
|
| + } else {
|
| + entry = condition.entry;
|
| + }
|
| +
|
| +
|
| + fragment_ = Fragment(entry, loop_exit);
|
| + --loop_depth_;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitDoStatement(DoStatement* node) {
|
| + ++loop_depth_;
|
| + Fragment body = TranslateStatement(node->body());
|
| +
|
| + if (body.is_closed()) {
|
| + fragment_ = body;
|
| + --loop_depth_;
|
| + return;
|
| + }
|
| +
|
| + bool negate;
|
| + JoinEntryInstr* join = BuildJoinEntry();
|
| + Fragment loop(join);
|
| + loop += CheckStackOverflow();
|
| + loop += body;
|
| + loop += TranslateCondition(node->condition(), &negate);
|
| + TargetEntryInstr* loop_repeat;
|
| + TargetEntryInstr* loop_exit;
|
| + loop += BranchIfTrue(&loop_repeat, &loop_exit, negate);
|
| +
|
| + Fragment repeat(loop_repeat);
|
| + repeat += Goto(join);
|
| +
|
| + fragment_ = Fragment(new (Z) GotoInstr(join), loop_exit);
|
| + --loop_depth_;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitForStatement(ForStatement* node) {
|
| + Fragment declarations;
|
| +
|
| + bool new_context = false;
|
| + declarations += EnterScope(node, &new_context);
|
| +
|
| + List<VariableDeclaration>& variables = node->variables();
|
| + for (intptr_t i = 0; i < variables.length(); ++i) {
|
| + declarations += TranslateStatement(variables[i]);
|
| + }
|
| +
|
| + ++loop_depth_;
|
| + bool negate = false;
|
| + Fragment condition = node->condition() == NULL
|
| + ? Constant(Bool::True())
|
| + : TranslateCondition(node->condition(), &negate);
|
| + TargetEntryInstr* body_entry;
|
| + TargetEntryInstr* loop_exit;
|
| + condition += BranchIfTrue(&body_entry, &loop_exit, negate);
|
| +
|
| + Fragment body(body_entry);
|
| + body += TranslateStatement(node->body());
|
| +
|
| + if (body.is_open()) {
|
| + // We allocated a fresh context before the loop which contains captured
|
| + // [ForStatement] variables. Before jumping back to the loop entry we clone
|
| + // the context object (at same depth) which ensures the next iteration of
|
| + // the body gets a fresh set of [ForStatement] variables (with the old
|
| + // (possibly updated) values).
|
| + if (new_context) body += CloneContext();
|
| +
|
| + List<Expression>& updates = node->updates();
|
| + for (intptr_t i = 0; i < updates.length(); ++i) {
|
| + body += TranslateExpression(updates[i]);
|
| + body += Drop();
|
| + }
|
| + JoinEntryInstr* join = BuildJoinEntry();
|
| + declarations += Goto(join);
|
| + body += Goto(join);
|
| +
|
| + Fragment loop(join);
|
| + loop += CheckStackOverflow();
|
| + loop += condition;
|
| + } else {
|
| + declarations += condition;
|
| + }
|
| +
|
| + Fragment loop(declarations.entry, loop_exit);
|
| + --loop_depth_;
|
| +
|
| + loop += ExitScope(node);
|
| +
|
| + fragment_ = loop;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitForInStatement(ForInStatement* node) {
|
| + Fragment instructions = TranslateExpression(node->iterable());
|
| + instructions += PushArgument();
|
| +
|
| + const dart::String& iterator_getter = dart::String::ZoneHandle(
|
| + Z, dart::Field::GetterSymbol(Symbols::Iterator()));
|
| + instructions += InstanceCall(iterator_getter, Token::kGET, 1);
|
| + LocalVariable* iterator = scopes_->iterator_variables[for_in_depth_];
|
| + instructions += StoreLocal(iterator);
|
| + instructions += Drop();
|
| +
|
| + ++for_in_depth_;
|
| + ++loop_depth_;
|
| + Fragment condition = LoadLocal(iterator);
|
| + condition += PushArgument();
|
| + condition += InstanceCall(Symbols::MoveNext(), Token::kILLEGAL, 1);
|
| + TargetEntryInstr* body_entry;
|
| + TargetEntryInstr* loop_exit;
|
| + condition += BranchIfTrue(&body_entry, &loop_exit);
|
| +
|
| + Fragment body(body_entry);
|
| + body += EnterScope(node);
|
| + body += LoadLocal(iterator);
|
| + body += PushArgument();
|
| + const dart::String& current_getter = dart::String::ZoneHandle(
|
| + Z, dart::Field::GetterSymbol(Symbols::Current()));
|
| + body += InstanceCall(current_getter, Token::kGET, 1);
|
| + body += StoreLocal(LookupVariable(node->variable()));
|
| + body += Drop();
|
| + body += TranslateStatement(node->body());
|
| + body += ExitScope(node);
|
| +
|
| + if (body.is_open()) {
|
| + JoinEntryInstr* join = BuildJoinEntry();
|
| + instructions += Goto(join);
|
| + body += Goto(join);
|
| +
|
| + Fragment loop(join);
|
| + loop += CheckStackOverflow();
|
| + loop += condition;
|
| + } else {
|
| + instructions += condition;
|
| + }
|
| +
|
| + fragment_ = Fragment(instructions.entry, loop_exit);
|
| + --loop_depth_;
|
| + --for_in_depth_;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitLabeledStatement(LabeledStatement* node) {
|
| + // There can be serveral cases:
|
| + //
|
| + // * the body contains a break
|
| + // * the body doesn't contain a break
|
| + //
|
| + // * translating the body results in a closed fragment
|
| + // * translating the body results in a open fragment
|
| + //
|
| + // => We will only know which case we are in after the body has been
|
| + // traversed.
|
| +
|
| + BreakableBlock block(this, node);
|
| + Fragment instructions = TranslateStatement(node->body());
|
| + if (block.HadJumper()) {
|
| + if (instructions.is_open()) {
|
| + instructions += Goto(block.destination());
|
| + }
|
| + fragment_ = Fragment(instructions.entry, block.destination());
|
| + } else {
|
| + fragment_ = instructions;
|
| + }
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitBreakStatement(BreakStatement* node) {
|
| + TryFinallyBlock* outer_finally = NULL;
|
| + intptr_t target_context_depth = -1;
|
| + JoinEntryInstr* destination = breakable_block_->BreakDestination(
|
| + node->target(), &outer_finally, &target_context_depth);
|
| +
|
| + Fragment instructions;
|
| + instructions +=
|
| + TranslateFinallyFinalizers(outer_finally, target_context_depth);
|
| + if (instructions.is_open()) {
|
| + instructions += Goto(destination);
|
| + }
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitSwitchStatement(SwitchStatement* node) {
|
| + SwitchBlock block(this, node);
|
| +
|
| + // Instead of using a variable we should reuse the expression on the stack,
|
| + // since it won't be assigned again, we don't need phi nodes.
|
| + Fragment head_instructions = TranslateExpression(node->condition());
|
| + head_instructions += StoreLocal(scopes_->switch_variable);
|
| + head_instructions += Drop();
|
| +
|
| + // Phase 1: Generate bodies and try to find out whether a body will be target
|
| + // of a jump due to:
|
| + // * `continue case_label`
|
| + // * `case e1: case e2: body`
|
| + Fragment* body_fragments = new Fragment[node->cases().length()];
|
| +
|
| + intptr_t num_cases = node->cases().length();
|
| + for (intptr_t i = 0; i < num_cases; i++) {
|
| + SwitchCase* switch_case = node->cases()[i];
|
| + Fragment& body_fragment = body_fragments[i] =
|
| + TranslateStatement(switch_case->body());
|
| +
|
| + if (body_fragment.entry == NULL) {
|
| + // Make a NOP in order to ensure linking works properly.
|
| + body_fragment = NullConstant();
|
| + body_fragment += Drop();
|
| + }
|
| +
|
| + // The Dart language specification mandates fall-throughs in [SwitchCase]es
|
| + // to be runtime errors.
|
| + if (!switch_case->is_default() && body_fragment.is_open() &&
|
| + (i < (node->cases().length() - 1))) {
|
| + const dart::Class& klass = dart::Class::ZoneHandle(
|
| + Z, dart::Library::LookupCoreClass(Symbols::FallThroughError()));
|
| + ASSERT(!klass.IsNull());
|
| + const dart::Function& constructor = dart::Function::ZoneHandle(
|
| + Z, klass.LookupConstructorAllowPrivate(
|
| + H.DartSymbol("FallThroughError._create")));
|
| + ASSERT(!constructor.IsNull());
|
| + const dart::String& url = H.DartString(
|
| + parsed_function_->function().ToLibNamePrefixedQualifiedCString(),
|
| + Heap::kOld);
|
| +
|
| + // Create instance of _FallThroughError
|
| + body_fragment += AllocateObject(klass, 0);
|
| + LocalVariable* instance = MakeTemporary();
|
| +
|
| + // Call _AssertionError._create constructor.
|
| + body_fragment += LoadLocal(instance);
|
| + body_fragment += PushArgument(); // this
|
| +
|
| + body_fragment += Constant(url);
|
| + body_fragment += PushArgument(); // url
|
| +
|
| + body_fragment += NullConstant();
|
| + body_fragment += PushArgument(); // line
|
| +
|
| + body_fragment += StaticCall(constructor, 3);
|
| + body_fragment += Drop();
|
| +
|
| + // Throw the exception
|
| + body_fragment += PushArgument();
|
| + body_fragment += ThrowException();
|
| + body_fragment += Drop();
|
| + }
|
| +
|
| + // If there is an implicit fall-through we have one [SwitchCase] and
|
| + // multiple expressions, e.g.
|
| + //
|
| + // switch(expr) {
|
| + // case a:
|
| + // case b:
|
| + // <stmt-body>
|
| + // }
|
| + //
|
| + // This means that the <stmt-body> will have more than 1 incoming edge (one
|
| + // from `a == expr` and one from `a != expr && b == expr`). The
|
| + // `block.Destination()` records the additional jump.
|
| + if (switch_case->expressions().length() > 1) {
|
| + block.Destination(switch_case);
|
| + }
|
| + }
|
| +
|
| + // Phase 2: Generate everything except the real bodies:
|
| + // * jump directly to a body (if there is no jumper)
|
| + // * jump to a wrapper block which jumps to the body (if there is a jumper)
|
| + Fragment current_instructions = head_instructions;
|
| + for (intptr_t i = 0; i < num_cases; i++) {
|
| + SwitchCase* switch_case = node->cases()[i];
|
| +
|
| + if (switch_case->is_default()) {
|
| + ASSERT(i == (node->cases().length() - 1));
|
| +
|
| + // Evaluate the conditions for the default [SwitchCase] just for the
|
| + // purpose of potentially triggering a compile-time error.
|
| + for (intptr_t k = 0; k < switch_case->expressions().length(); k++) {
|
| + constant_evaluator_.EvaluateExpression(switch_case->expressions()[k]);
|
| + }
|
| +
|
| + if (block.HadJumper(switch_case)) {
|
| + // There are several branches to the body, so we will make a goto to
|
| + // the join block (and prepend a join instruction to the real body).
|
| + JoinEntryInstr* join = block.Destination(switch_case);
|
| + current_instructions += Goto(join);
|
| +
|
| + current_instructions = Fragment(current_instructions.entry, join);
|
| + current_instructions += body_fragments[i];
|
| + } else {
|
| + current_instructions += body_fragments[i];
|
| + }
|
| + } else {
|
| + JoinEntryInstr* body_join = NULL;
|
| + if (block.HadJumper(switch_case)) {
|
| + body_join = block.Destination(switch_case);
|
| + body_fragments[i] = Fragment(body_join) + body_fragments[i];
|
| + }
|
| +
|
| + for (intptr_t j = 0; j < switch_case->expressions().length(); j++) {
|
| + TargetEntryInstr* then;
|
| + TargetEntryInstr* otherwise;
|
| +
|
| + current_instructions += Constant(constant_evaluator_.EvaluateExpression(
|
| + switch_case->expressions()[j]));
|
| + current_instructions += PushArgument();
|
| + current_instructions += LoadLocal(scopes_->switch_variable);
|
| + current_instructions += PushArgument();
|
| + current_instructions +=
|
| + InstanceCall(Symbols::EqualOperator(), Token::kEQ,
|
| + /*argument_count=*/2,
|
| + /*num_args_checked=*/2);
|
| + current_instructions += BranchIfTrue(&then, &otherwise);
|
| +
|
| + Fragment then_fragment(then);
|
| +
|
| + if (body_join != NULL) {
|
| + // There are several branches to the body, so we will make a goto to
|
| + // the join block (the real body has already been prepended with a
|
| + // join instruction).
|
| + then_fragment += Goto(body_join);
|
| + } else {
|
| + // There is only a signle branch to the body, so we will just append
|
| + // the body fragment.
|
| + then_fragment += body_fragments[i];
|
| + }
|
| +
|
| + current_instructions = Fragment(otherwise);
|
| + }
|
| + }
|
| + }
|
| +
|
| + bool has_no_default =
|
| + num_cases > 0 && !node->cases()[num_cases - 1]->is_default();
|
| + if (has_no_default) {
|
| + // There is no default, which means we have an open [current_instructions]
|
| + // (which is a [TargetEntryInstruction] for the last "otherwise" branch).
|
| + //
|
| + // Furthermore the last [SwitchCase] can be open as well. If so, we need
|
| + // to join these two.
|
| + Fragment& last_body = body_fragments[node->cases().length() - 1];
|
| + if (last_body.is_open()) {
|
| + ASSERT(current_instructions.is_open());
|
| + ASSERT(current_instructions.current->IsTargetEntry());
|
| +
|
| + // Join the last "otherwise" branch and the last [SwitchCase] fragment.
|
| + JoinEntryInstr* join = BuildJoinEntry();
|
| + current_instructions += Goto(join);
|
| + last_body += Goto(join);
|
| +
|
| + current_instructions = Fragment(join);
|
| + }
|
| + } else {
|
| + // All non-default cases will be closed (i.e. break/continue/throw/return)
|
| + // So it is fine to just let more statements after the switch append to the
|
| + // default case.
|
| + }
|
| +
|
| + delete[] body_fragments;
|
| +
|
| + fragment_ = Fragment(head_instructions.entry, current_instructions.current);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitContinueSwitchStatement(
|
| + ContinueSwitchStatement* node) {
|
| + TryFinallyBlock* outer_finally = NULL;
|
| + intptr_t target_context_depth = -1;
|
| + JoinEntryInstr* entry = switch_block_->Destination(
|
| + node->target(), &outer_finally, &target_context_depth);
|
| +
|
| + Fragment instructions;
|
| + instructions +=
|
| + TranslateFinallyFinalizers(outer_finally, target_context_depth);
|
| + if (instructions.is_open()) {
|
| + instructions += Goto(entry);
|
| + }
|
| + fragment_ = instructions;
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitAssertStatement(AssertStatement* node) {
|
| + if (!I->asserts()) {
|
| + fragment_ = Fragment();
|
| + return;
|
| + }
|
| +
|
| + TargetEntryInstr* then;
|
| + TargetEntryInstr* otherwise;
|
| +
|
| + bool negate;
|
| + Fragment instructions;
|
| + instructions += TranslateCondition(node->condition(), &negate);
|
| + instructions += BranchIfTrue(&then, &otherwise, negate);
|
| +
|
| + const dart::Class& klass = dart::Class::ZoneHandle(
|
| + Z, dart::Library::LookupCoreClass(Symbols::AssertionError()));
|
| + ASSERT(!klass.IsNull());
|
| + const dart::Function& constructor = dart::Function::ZoneHandle(
|
| + Z, klass.LookupConstructorAllowPrivate(
|
| + H.DartSymbol("_AssertionError._create")));
|
| + ASSERT(!constructor.IsNull());
|
| +
|
| + const dart::String& url = H.DartString(
|
| + parsed_function_->function().ToLibNamePrefixedQualifiedCString(),
|
| + Heap::kOld);
|
| +
|
| + // Create instance of _AssertionError
|
| + Fragment otherwise_fragment(otherwise);
|
| + otherwise_fragment += AllocateObject(klass, 0);
|
| + LocalVariable* instance = MakeTemporary();
|
| +
|
| + // Call _AssertionError._create constructor.
|
| + otherwise_fragment += LoadLocal(instance);
|
| + otherwise_fragment += PushArgument(); // this
|
| +
|
| + otherwise_fragment +=
|
| + node->message() != NULL
|
| + ? TranslateExpression(node->message())
|
| + : Constant(H.DartString("<no message>", Heap::kOld));
|
| + otherwise_fragment += PushArgument(); // message
|
| +
|
| + otherwise_fragment += Constant(url);
|
| + otherwise_fragment += PushArgument(); // url
|
| +
|
| + otherwise_fragment += IntConstant(0);
|
| + otherwise_fragment += PushArgument(); // line
|
| +
|
| + otherwise_fragment += IntConstant(0);
|
| + otherwise_fragment += PushArgument(); // column
|
| +
|
| + otherwise_fragment += StaticCall(constructor, 5);
|
| + otherwise_fragment += Drop();
|
| +
|
| + // Throw _AssertionError exception.
|
| + otherwise_fragment += PushArgument();
|
| + otherwise_fragment += ThrowException();
|
| + otherwise_fragment += Drop();
|
| +
|
| + fragment_ = Fragment(instructions.entry, then);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitTryFinally(TryFinally* node) {
|
| + InlineBailout("kernel::FlowgraphBuilder::VisitTryFinally");
|
| +
|
| + // There are 5 different cases where we need to execute the finally block:
|
| + //
|
| + // a) 1/2/3th case: Special control flow going out of `node->body()`:
|
| + //
|
| + // * [BreakStatement] transfers control to a [LabledStatement]
|
| + // * [ContinueSwitchStatement] transfers control to a [SwitchCase]
|
| + // * [ReturnStatement] returns a value
|
| + //
|
| + // => All three cases will automatically append all finally blocks
|
| + // between the branching point and the destination (so we don't need to
|
| + // do anything here).
|
| + //
|
| + // b) 4th case: Translating the body resulted in an open fragment (i.e. body
|
| + // executes without any control flow out of it)
|
| + //
|
| + // => We are responsible for jumping out of the body to a new block (with
|
| + // different try index) and execute the finalizer.
|
| + //
|
| + // c) 5th case: An exception occured inside the body.
|
| + //
|
| + // => We are responsible for catching it, executing the finally block and
|
| + // rethrowing the exception.
|
| + intptr_t try_handler_index = AllocateTryIndex();
|
| + Fragment try_body = TryCatch(try_handler_index);
|
| + JoinEntryInstr* after_try = BuildJoinEntry();
|
| +
|
| + // Fill in the body of the try.
|
| + ++try_depth_;
|
| + {
|
| + TryCatchBlock tcb(this, try_handler_index);
|
| + TryFinallyBlock tfb(this, node->finalizer());
|
| + try_body += TranslateStatement(node->body());
|
| + }
|
| + --try_depth_;
|
| +
|
| + if (try_body.is_open()) {
|
| + // Please note: The try index will be on level out of this block,
|
| + // thereby ensuring if there's an exception in the finally block we
|
| + // won't run it twice.
|
| + JoinEntryInstr* finally_entry = BuildJoinEntry();
|
| +
|
| + try_body += Goto(finally_entry);
|
| +
|
| + Fragment finally_body(finally_entry);
|
| + finally_body += TranslateStatement(node->finalizer());
|
| + finally_body += Goto(after_try);
|
| + }
|
| +
|
| + // Fill in the body of the catch.
|
| + ++catch_depth_;
|
| + const Array& handler_types = Array::ZoneHandle(Z, Array::New(1, Heap::kOld));
|
| + handler_types.SetAt(0, Object::dynamic_type());
|
| + Fragment finally_body = CatchBlockEntry(handler_types, try_handler_index);
|
| + finally_body += TranslateStatement(node->finalizer());
|
| + if (finally_body.is_open()) {
|
| + finally_body += LoadLocal(CurrentException());
|
| + finally_body += PushArgument();
|
| + finally_body += LoadLocal(CurrentStackTrace());
|
| + finally_body += PushArgument();
|
| + finally_body += RethrowException(try_handler_index);
|
| + Drop();
|
| + }
|
| + --catch_depth_;
|
| +
|
| + fragment_ = Fragment(try_body.entry, after_try);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitTryCatch(class TryCatch* node) {
|
| + InlineBailout("kernel::FlowgraphBuilder::VisitTryCatch");
|
| +
|
| + intptr_t try_handler_index = AllocateTryIndex();
|
| + Fragment try_body = TryCatch(try_handler_index);
|
| + JoinEntryInstr* after_try = BuildJoinEntry();
|
| +
|
| + // Fill in the body of the try.
|
| + ++try_depth_;
|
| + {
|
| + TryCatchBlock block(this, try_handler_index);
|
| + try_body += TranslateStatement(node->body());
|
| + try_body += Goto(after_try);
|
| + }
|
| + --try_depth_;
|
| +
|
| + ++catch_depth_;
|
| + const Array& handler_types =
|
| + Array::ZoneHandle(Z, Array::New(node->catches().length(), Heap::kOld));
|
| + Fragment catch_body = CatchBlockEntry(handler_types, try_handler_index);
|
| + // Fill in the body of the catch.
|
| + for (intptr_t i = 0; i < node->catches().length(); i++) {
|
| + Catch* catch_clause = node->catches()[i];
|
| +
|
| + Fragment catch_handler_body;
|
| +
|
| + catch_handler_body += EnterScope(catch_clause);
|
| +
|
| + if (catch_clause->exception() != NULL) {
|
| + catch_handler_body += LoadLocal(CurrentException());
|
| + catch_handler_body +=
|
| + StoreLocal(LookupVariable(catch_clause->exception()));
|
| + catch_handler_body += Drop();
|
| + }
|
| + if (catch_clause->stack_trace() != NULL) {
|
| + catch_handler_body += LoadLocal(CurrentStackTrace());
|
| + catch_handler_body +=
|
| + StoreLocal(LookupVariable(catch_clause->stack_trace()));
|
| + catch_handler_body += Drop();
|
| + }
|
| + AbstractType* type_guard = NULL;
|
| + if (catch_clause->guard() != NULL &&
|
| + !catch_clause->guard()->IsDynamicType()) {
|
| + type_guard = &T.TranslateType(catch_clause->guard());
|
| + handler_types.SetAt(i, *type_guard);
|
| + } else {
|
| + handler_types.SetAt(i, Object::dynamic_type());
|
| + }
|
| +
|
| + {
|
| + CatchBlock block(this, CurrentException(), CurrentStackTrace(),
|
| + try_handler_index);
|
| +
|
| + catch_handler_body += TranslateStatement(catch_clause->body());
|
| +
|
| + // Note: ExitScope adjusts context_depth_ so even if catch_handler_body
|
| + // is closed we still need to execute ExitScope for its side effect.
|
| + catch_handler_body += ExitScope(catch_clause);
|
| + if (catch_handler_body.is_open()) {
|
| + catch_handler_body += Goto(after_try);
|
| + }
|
| + }
|
| +
|
| + if (type_guard != NULL) {
|
| + if (type_guard->IsMalformed()) {
|
| + catch_body += ThrowTypeError();
|
| + catch_body += Drop();
|
| + } else {
|
| + catch_body += LoadLocal(CurrentException());
|
| + catch_body += PushArgument(); // exception
|
| + catch_body += NullConstant();
|
| + catch_body += PushArgument(); // type arguments
|
| + catch_body += Constant(*type_guard);
|
| + catch_body += PushArgument(); // guard type
|
| + catch_body += Constant(Object::bool_false());
|
| + catch_body += PushArgument(); // negate
|
| + catch_body += InstanceCall(
|
| + dart::Library::PrivateCoreLibName(Symbols::_instanceOf()),
|
| + Token::kIS, 4);
|
| +
|
| + TargetEntryInstr* catch_entry;
|
| + TargetEntryInstr* next_catch_entry;
|
| + catch_body += BranchIfTrue(&catch_entry, &next_catch_entry);
|
| +
|
| + Fragment(catch_entry) + catch_handler_body;
|
| + catch_body = Fragment(next_catch_entry);
|
| + }
|
| + } else {
|
| + catch_body += catch_handler_body;
|
| + }
|
| + }
|
| +
|
| + // In case the last catch body was not handling the exception and branching to
|
| + // after the try block, we will rethrow the exception (i.e. no default catch
|
| + // handler).
|
| + if (catch_body.is_open()) {
|
| + catch_body += LoadLocal(CurrentException());
|
| + catch_body += PushArgument();
|
| + catch_body += LoadLocal(CurrentStackTrace());
|
| + catch_body += PushArgument();
|
| + catch_body += RethrowException(try_handler_index);
|
| + Drop();
|
| + }
|
| + --catch_depth_;
|
| +
|
| + fragment_ = Fragment(try_body.entry, after_try);
|
| +}
|
| +
|
| +
|
| +void FlowGraphBuilder::VisitYieldStatement(YieldStatement* node) {
|
| + ASSERT(node->is_native()); // Must have been desugared.
|
| + // Setup yield/continue point:
|
| + //
|
| + // ...
|
| + // :await_jump_var = index;
|
| + // :await_ctx_var = :current_context_var
|
| + // return <expr>
|
| + //
|
| + // Continuation<index>:
|
| + // Drop(1)
|
| + // ...
|
| + //
|
| + // BuildGraphOfFunction will create a dispatch that jumps to
|
| + // Continuation<:await_jump_var> upon entry to the function.
|
| + //
|
| + Fragment instructions = IntConstant(yield_continuations_.length() + 1);
|
| + instructions += StoreLocal(scopes_->yield_jump_variable);
|
| + instructions += Drop();
|
| + instructions += LoadLocal(parsed_function_->current_context_var());
|
| + instructions += StoreLocal(scopes_->yield_context_variable);
|
| + instructions += Drop();
|
| + instructions += TranslateExpression(node->expression());
|
| + instructions += Return();
|
| +
|
| + // Note: DropTempsInstr serves as an anchor instruction. It will not
|
| + // be linked into the resulting graph.
|
| + DropTempsInstr* anchor = new (Z) DropTempsInstr(0, NULL);
|
| + yield_continuations_.Add(YieldContinuation(anchor, CurrentTryIndex()));
|
| +
|
| + Fragment continuation(instructions.entry, anchor);
|
| +
|
| + // TODO(27590): we need a better way to detect if we need to check for an
|
| + // exception after yield or not.
|
| + if (parsed_function_->function().NumOptionalPositionalParameters() == 3) {
|
| + // If function takes three parameters then the second and the third
|
| + // are exception and stack_trace. Check if exception is non-null
|
| + // and rethrow it.
|
| + //
|
| + // :async_op([:result, :exception, :stack_trace]) {
|
| + // ...
|
| + // Continuation<index>:
|
| + // if (:exception != null) rethrow(:exception, :stack_trace);
|
| + // ...
|
| + // }
|
| + //
|
| + LocalScope* scope = parsed_function_->node_sequence()->scope();
|
| + LocalVariable* exception_var = scope->VariableAt(2);
|
| + LocalVariable* stack_trace_var = scope->VariableAt(3);
|
| + ASSERT(exception_var->name().raw() == Symbols::ExceptionParameter().raw());
|
| + ASSERT(stack_trace_var->name().raw() ==
|
| + Symbols::StackTraceParameter().raw());
|
| +
|
| + TargetEntryInstr* no_error;
|
| + TargetEntryInstr* error;
|
| +
|
| + continuation += LoadLocal(exception_var);
|
| + continuation += BranchIfNull(&no_error, &error);
|
| +
|
| + Fragment rethrow(error);
|
| + rethrow += LoadLocal(exception_var);
|
| + rethrow += PushArgument();
|
| + rethrow += LoadLocal(stack_trace_var);
|
| + rethrow += PushArgument();
|
| + rethrow += RethrowException(CatchClauseNode::kInvalidTryIndex);
|
| + Drop();
|
| +
|
| +
|
| + continuation = Fragment(continuation.entry, no_error);
|
| + }
|
| +
|
| + fragment_ = continuation;
|
| +}
|
| +
|
| +
|
| +Fragment FlowGraphBuilder::TranslateFunctionNode(FunctionNode* node,
|
| + TreeNode* parent) {
|
| + // The VM has a per-isolate table of functions indexed by the enclosing
|
| + // function and token position. We don't have token positions, so we've
|
| + // simply numbered the immediately-nested functions with respect to the
|
| + // parent.
|
| + Function& function = Function::ZoneHandle(Z);
|
| + for (intptr_t i = 0; i < scopes_->function_scopes.length(); ++i) {
|
| + if (scopes_->function_scopes[i].function != node) continue;
|
| +
|
| + function = I->LookupClosureFunction(parsed_function_->function(),
|
| + TokenPosition(i));
|
| + if (function.IsNull()) {
|
| + const dart::String* name;
|
| + if (parent->IsFunctionExpression()) {
|
| + name = &Symbols::AnonymousClosure();
|
| + } else {
|
| + ASSERT(parent->IsFunctionDeclaration());
|
| + name = &H.DartSymbol(
|
| + FunctionDeclaration::Cast(parent)->variable()->name());
|
| + }
|
| + function = Function::NewClosureFunction(
|
| + *name, parsed_function_->function(), TokenPosition(i));
|
| + function.set_is_debuggable(false);
|
| + LocalScope* scope = scopes_->function_scopes[i].scope;
|
| + const ContextScope& context_scope =
|
| + ContextScope::Handle(Z, scope->PreserveOuterScope(context_depth_));
|
| + function.set_context_scope(context_scope);
|
| + function.set_kernel_function(node);
|
| + KernelReader::SetupFunctionParameters(H, T, dart::Class::Handle(Z),
|
| + function, node,
|
| + false, // is_method
|
| + true); // is_closure
|
| + // Finalize function type.
|
| + Type& signature_type = Type::Handle(Z, function.SignatureType());
|
| + signature_type ^= ClassFinalizer::FinalizeType(
|
| + *active_class_.klass, signature_type, ClassFinalizer::kCanonicalize);
|
| + function.SetSignatureType(signature_type);
|
| +
|
| + I->AddClosureFunction(function);
|
| + }
|
| + break;
|
| + }
|
| +
|
| + const dart::Class& closure_class =
|
| + dart::Class::ZoneHandle(Z, I->object_store()->closure_class());
|
| + ASSERT(!closure_class.IsNull());
|
| + Fragment instructions = AllocateObject(closure_class, function);
|
| + LocalVariable* closure = MakeTemporary();
|
| +
|
| + // TODO(27590): Generic closures need type arguments.
|
| +
|
| + // Store the function and the context in the closure.
|
| + instructions += LoadLocal(closure);
|
| + instructions += Constant(function);
|
| + instructions += StoreInstanceField(Closure::function_offset());
|
| +
|
| + instructions += LoadLocal(closure);
|
| + instructions += LoadLocal(parsed_function_->current_context_var());
|
| + instructions += StoreInstanceField(Closure::context_offset());
|
| +
|
| + return instructions;
|
| +}
|
| +
|
| +
|
| +} // namespace kernel
|
| +} // namespace dart
|
|
|
Chromium Code Reviews
Issue 2411823003:
VM support for running Kernel binaries. (Closed)
