Implement inlined LoadIndexed operation for arrays on x64.

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 24 matching lines @@
   M(CurrentContext, CurrentContextComp)                                        \
   M(StoreContext, StoreContextComp)                                            \
   M(ClosureCall, ClosureCallComp)                                              \
   M(InstanceCall, InstanceCallComp)                                            \
   M(StaticCall, StaticCallComp)                                                \
   M(LoadLocal, LoadLocalComp)                                                  \
   M(StoreLocal, StoreLocalComp)                                                \
   M(StrictCompare, StrictCompareComp)                                          \
   M(EqualityCompare, EqualityCompareComp)                                      \
   M(NativeCall, NativeCallComp)                                                \
+  M(LoadIndexed, LoadIndexedComp)                                            \
   M(StoreIndexed, StoreIndexedComp)                                            \
   M(InstanceSetter, InstanceSetterComp)                                        \
   M(StaticSetter, StaticSetterComp)                                            \
   M(LoadInstanceField, LoadInstanceFieldComp)                                  \
   M(StoreInstanceField, StoreInstanceFieldComp)                                \
   M(LoadStaticField, LoadStaticFieldComp)                                      \
   M(StoreStaticField, StoreStaticFieldComp)                                    \
   M(BooleanNegate, BooleanNegateComp)                                          \
   M(InstanceOf, InstanceOfComp)                                                \
   M(CreateArray, CreateArrayComp)                                              \
@@ skipping 719 matching lines @@
 
   virtual void PrintOperandsTo(BufferFormatter* f) const;
 
  private:
   const Field& field_;
 
   DISALLOW_COPY_AND_ASSIGN(StoreStaticFieldComp);
 };
 
 
+class LoadIndexedComp : public TemplateComputation<2> {
+ public:
+  LoadIndexedComp(intptr_t token_index,
+                  intptr_t try_index,
+                  Value* array,
+                  Value* index)
+      : token_index_(token_index),
+        try_index_(try_index),
+        receiver_type_(kIllegalObjectKind) {

[srdjan, 2012/06/08 19:16:08]

ASSERT array and index are not NULL.

[Vyacheslav Egorov (Google), 2012/06/08 19:23:33]

Done.

+    inputs_[0] = array;
+    inputs_[1] = index;
+  }
+
+  DECLARE_COMPUTATION(LoadIndexed)
+
+  intptr_t token_index() const { return token_index_; }
+  intptr_t try_index() const { return try_index_; }
+  Value* array() const { return inputs_[0]; }
+  Value* index() const { return inputs_[1]; }
+
+  void set_receiver_type(ObjectKind receiver_type) {
+    receiver_type_ = receiver_type;
+  }
+
+  ObjectKind receiver_type() const {
+    return receiver_type_;
+  }
+
+ private:
+  const intptr_t token_index_;
+  const intptr_t try_index_;
+  ObjectKind receiver_type_;
+
+  DISALLOW_COPY_AND_ASSIGN(LoadIndexedComp);
+};
+
+
 // Not simply an InstanceCall because it has somewhat more complicated
 // semantics: the value operand is preserved before the call.
 class StoreIndexedComp : public TemplateComputation<3> {
  public:
   StoreIndexedComp(intptr_t token_index,
                    intptr_t try_index,
                    Value* array,
                    Value* index,
                    Value* value)
       : token_index_(token_index),
@@ skipping 1259 matching lines @@
   const GrowableArray<BlockEntryInstr*>& block_order_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_