Improve smi shift operations and avoid repeated deoptimizations.

runtime/vm/code_generator.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_CODE_GENERATOR_H_
 #define VM_CODE_GENERATOR_H_
 
 #include "vm/globals.h"
 #include "vm/runtime_entry.h"
 
@@ skipping 31 matching lines @@
 DECLARE_RUNTIME_ENTRY(ReThrow);
 DECLARE_RUNTIME_ENTRY(StackOverflow);
 DECLARE_RUNTIME_ENTRY(Throw);
 DECLARE_RUNTIME_ENTRY(TraceFunctionEntry);
 DECLARE_RUNTIME_ENTRY(TraceFunctionExit);
 DECLARE_RUNTIME_ENTRY(DeoptimizeMaterializeDoubles);
 DECLARE_RUNTIME_ENTRY(UpdateICDataTwoArgs);
 
 #define DEOPT_REASONS(V)                                                       \
   V(Unknown)                                                                   \
-  V(IncrLocal)                                                                 \
-  V(IncrInstance)                                                              \
-  V(IncrInstanceOneClass)                                                      \
-  V(InstanceGetterSameTarget)                                                  \
   V(InstanceGetter)                                                            \
-  V(StoreIndexed)                                                              \
-  V(StoreIndexedPolymorphic)                                                   \
-  V(PolymorphicInstanceCallSmiOnly)                                            \
-  V(PolymorphicInstanceCallSmiFail)                                            \
   V(PolymorphicInstanceCallTestFail)                                           \
   V(InstanceCallNoICData)                                                      \
   V(IntegerToDouble)                                                           \
   V(BinarySmiOp)                                                               \
   V(BinaryMintOp)                                                              \
   V(ShiftMintOp)                                                               \
   V(BinaryDoubleOp)                                                            \
-  V(InstanceSetterSameTarget)                                                  \
   V(InstanceSetter)                                                            \
-  V(SmiEquality)                                                               \
   V(Equality)                                                                  \
   V(RelationalOp)                                                              \
-  V(SmiCompareSmi)                                                             \
-  V(SmiCompareAny)                                                             \
-  V(DoubleCompareDouble)                                                       \
-  V(EqualityNoFeedback)                                                        \
   V(EqualityClassCheck)                                                        \
-  V(DoubleComparison)                                                          \
-  V(LoadIndexedFixedArray)                                                     \
-  V(LoadIndexedGrowableArray)                                                  \
-  V(LoadIndexedPolymorphic)                                                    \
   V(NoTypeFeedback)                                                            \
   V(UnaryOp)                                                                   \
   V(UnboxInteger)                                                              \
   V(CheckClass)                                                                \
   V(CheckSmi)                                                                  \
   V(CheckArrayBound)                                                           \
   V(AtCall)                                                                    \
   V(NumReasons)                                                                \
 
 enum DeoptReasonId {
 #define DEFINE_ENUM_LIST(name) kDeopt##name,
 DEOPT_REASONS(DEFINE_ENUM_LIST)
 #undef DEFINE_ENUM_LIST
 };
 
 
 const char* DeoptReasonToText(intptr_t deopt_id);
 
 
 RawCode* ResolveCompileInstanceCallTarget(Isolate* isolate,
                                           const Instance& receiver);
 
 void DeoptimizeAll();
 
 }  // namespace dart
 
 #endif  // VM_CODE_GENERATOR_H_