Move type check elimination from backend to graph builder in new compiler.

runtime/vm/intermediate_language.h

 // Copyright (c) 2012, 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.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 125 matching lines @@
 
 #undef DECLARE_VALUE
 
 
 class AssertAssignableComp : public Computation {
  public:
   AssertAssignableComp(intptr_t node_id,
                        intptr_t token_index,
                        intptr_t try_index,
                        Value* value,
-                       Value* type_arguments,  // Can be NULL.
+                       Value* instantiator_type_arguments,  // Can be NULL.
                        const AbstractType& dst_type,
                        const String& dst_name)
       : node_id_(node_id),
         token_index_(token_index),
         try_index_(try_index),
         value_(value),
-        type_arguments_(type_arguments),
+        instantiator_type_arguments_(instantiator_type_arguments),
         dst_type_(dst_type),
         dst_name_(dst_name) {
     ASSERT(value_ != NULL);
     ASSERT(!dst_type.IsNull());
     ASSERT(!dst_name.IsNull());
   }
 
   DECLARE_COMPUTATION(AssertAssignable)
 
   intptr_t node_id() const { return node_id_; }
   intptr_t token_index() const { return token_index_; }
   intptr_t try_index() const { return try_index_; }
   Value* value() const { return value_; }
-  Value* type_arguments() const { return type_arguments_; }
+  Value* instantiator_type_arguments() const {
+    return instantiator_type_arguments_;
+  }
   const AbstractType& dst_type() const { return dst_type_; }
   const String& dst_name() const { return dst_name_; }
 
  private:
   const intptr_t node_id_;
   const intptr_t token_index_;
   const intptr_t try_index_;
   Value* value_;
-  Value* type_arguments_;
+  Value* instantiator_type_arguments_;
   const AbstractType& dst_type_;
   const String& dst_name_;
 
   DISALLOW_COPY_AND_ASSIGN(AssertAssignableComp);
 };
 
 
 class AssertBooleanComp : public Computation {
  public:
   AssertBooleanComp(intptr_t node_id,
@@ skipping 573 matching lines @@
   ZoneGrowableArray<Value*>* const arguments_;
   DISALLOW_COPY_AND_ASSIGN(AllocateObjectComp);
 };
 
 
 class CreateArrayComp : public Computation {
  public:
   CreateArrayComp(ArrayNode* node,
                   intptr_t try_index,
                   ZoneGrowableArray<Value*>* elements)
-      : ast_node_(*node), try_index_(try_index), elements_(elements) { }
+      : ast_node_(*node), try_index_(try_index), elements_(elements) {
+#if defined(DEBUG)
+    for (int i = 0; i < ElementCount(); ++i) {
+      ASSERT(ElementAt(i) != NULL);
+    }
+#endif
+  }
 
   DECLARE_COMPUTATION(CreateArray)
 
   intptr_t token_index() const { return ast_node_.token_index(); }
   intptr_t try_index() const { return try_index_; }
   const AbstractTypeArguments& type_arguments() const {
     return ast_node_.type_arguments();
   }
   intptr_t ElementCount() const { return elements_->length(); }
   Value* ElementAt(intptr_t i) const { return (*elements_)[i]; }
@@ skipping 762 matching lines @@
   const GrowableArray<BlockEntryInstr*>& block_order_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_