[turbofan]: Improved source position information

src/compiler/typer.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/bootstrapper.h"
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/node.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/simplified-operator.h"
@@ skipping 125 matching lines @@
 
   Type* cache_[kNumLazyCachedTypes];
   Isolate* isolate_;
   Zone* zone_;
 };
 
 
 class Typer::Decorator FINAL : public GraphDecorator {
  public:
   explicit Decorator(Typer* typer) : typer_(typer) {}
-  void Decorate(Node* node) FINAL;
+  void Decorate(Node* node, bool incomplete) FINAL;
 
  private:
   Typer* typer_;
 };
 
 
 Typer::Typer(Isolate* isolate, Graph* graph, MaybeHandle<Context> context)
     : isolate_(isolate),
       graph_(graph),
       context_(context),
@@ skipping 244 matching lines @@
     }
   }
 
   Visitor visitor(this);
   GraphReducer graph_reducer(graph(), zone());
   graph_reducer.AddReducer(&visitor);
   graph_reducer.ReduceGraph();
 }
 
 
-void Typer::Decorator::Decorate(Node* node) {
+void Typer::Decorator::Decorate(Node* node, bool incomplete) {
+  if (incomplete) return;
   if (node->op()->ValueOutputCount() > 0) {
     // Only eagerly type-decorate nodes with known input types.
     // Other cases will generally require a proper fixpoint iteration with Run.
     bool is_typed = NodeProperties::IsTyped(node);
     if (is_typed || NodeProperties::AllValueInputsAreTyped(node)) {
       Visitor typing(typer_);
       Bounds bounds = typing.TypeNode(node);
       if (is_typed) {
         bounds =
           Bounds::Both(bounds, NodeProperties::GetBounds(node), typer_->zone());
@@ skipping 1713 matching lines @@
       TYPED_ARRAYS(TYPED_ARRAY_CASE)
 #undef TYPED_ARRAY_CASE
     }
   }
   return Type::Constant(value, zone());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8