Inline Array allocation for constant lengths (except ARM64).

runtime/vm/intermediate_language.h

 // Copyright (c) 2013, 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 184 matching lines @@
   V(_List, get:length, ObjectArrayLength, 215183186)                           \
   V(_ImmutableList, get:length, ImmutableArrayLength, 578762861)               \
   V(_TypedList, get:length, TypedDataLength, 26646119)                         \
   V(_GrowableList, get:length, GrowableArrayLength, 1654255033)                \
   V(_StringBase, get:length, StringBaseLength, 1483549854)                     \
   V(ListIterator, moveNext, ListIteratorMoveNext, 2062984847)                  \
   V(_GrowableList, get:iterator, GrowableArrayIterator, 1155241039)            \
   V(_GrowableList, forEach, GrowableArrayForEach, 195359970)                   \
   V(_List, [], ObjectArrayGetIndexed, 675155875)                               \
   V(_List, []=, ObjectArraySetIndexed, 1228569706)                             \
+  V(_List, get:isEmpty, ObjectArrayIsEmpty, 1082804442)                        \
   V(_ImmutableList, [], ImmutableArrayGetIndexed, 1768793932)                  \
   V(_GrowableList, [], GrowableArrayGetIndexed, 1282104248)                    \
   V(_GrowableList, []=, GrowableArraySetIndexed, 807019110)                    \
   V(_Float32Array, [], Float32ArrayGetIndexed, 1461569776)                     \
   V(_Float32Array, []=, Float32ArraySetIndexed, 1318757370)                    \
   V(_Float64Array, [], Float64ArrayGetIndexed, 1107401598)                     \
   V(_Float64Array, []=, Float64ArraySetIndexed, 377873481)                     \
   V(_Int8Array, [], Int8ArrayGetIndexed, 436208801)                            \
   V(_Int8Array, []=, Int8ArraySetIndexed, 1257450859)                          \
   V(_Uint8Array, [], Uint8ArrayGetIndexed, 738731818)                          \
@@ skipping 4160 matching lines @@
   Value* num_elements() const { return inputs_[kLengthPos]; }
 
   virtual void PrintOperandsTo(BufferFormatter* f) const;
 
   // Throw needs environment, which is created only if instruction can
   // deoptimize.
   virtual bool CanDeoptimize() const { return MayThrow(); }
 
   virtual EffectSet Effects() const { return EffectSet::None(); }
 
-  // TODO(srdjan): return false if length is a positive Smi.
+  // OutOfMemoryError can be called.
   virtual bool MayThrow() const { return true; }
 
   virtual AliasIdentity Identity() const { return identity_; }
   virtual void SetIdentity(AliasIdentity identity) { identity_ = identity; }
 
  private:
   const intptr_t token_pos_;
   AliasIdentity identity_;
 
   DISALLOW_COPY_AND_ASSIGN(CreateArrayInstr);
@@ skipping 3568 matching lines @@
   ForwardInstructionIterator* current_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_