Make it possible to Crankshaft all kinds of stubs.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 898b176215f57f98e7404a2c7e651bb67137a303..3ca89f08eab202ebf9e14531795a7fed54cd3f60 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -4327,7 +4327,6 @@ class Code: public HeapObject {
   V(FUNCTION)             \
   V(OPTIMIZED_FUNCTION)   \
   V(STUB)                 \
-  V(COMPILED_STUB)        \
   V(BUILTIN)              \
   V(LOAD_IC)              \
   V(KEYED_LOAD_IC)        \
@@ -4470,6 +4469,11 @@ class Code: public HeapObject {
   inline int major_key();
   inline void set_major_key(int value);
 
+  // For kind STUB or ICs, tells whether or not a code object was generated by
+  // the optimizing compiler (but it may not be an optimized function).
+  bool is_crankshafted();
+  inline void set_is_crankshafted(bool value);
+
   // For stubs, tells whether they should always exist, so that they can be
   // called from other stubs.
   inline bool is_pregenerated();
@@ -4785,15 +4789,22 @@ class Code: public HeapObject {
       kMarkedForDeoptimizationFirstBit,
       kMarkedForDeoptimizationBitCount> {};  // NOLINT
 
+  // KindSpecificFlags2 layout (ALL)
+  static const int kIsCrankshaftedBit = 0;
+  class IsCrankshaftedField: public BitField<bool,
+      kIsCrankshaftedBit, 1> {};  // NOLINT
+
   // KindSpecificFlags2 layout (STUB and OPTIMIZED_FUNCTION)
-  static const int kStubMajorKeyFirstBit = 0;
+  static const int kStubMajorKeyFirstBit = kIsCrankshaftedBit + 1;
   static const int kSafepointTableOffsetFirstBit =
       kStubMajorKeyFirstBit + kStubMajorKeyBits;
-  static const int kSafepointTableOffsetBitCount = 26;
+  static const int kSafepointTableOffsetBitCount = 25;
 
   STATIC_ASSERT(kStubMajorKeyFirstBit + kStubMajorKeyBits <= 32);
   STATIC_ASSERT(kSafepointTableOffsetFirstBit +
                 kSafepointTableOffsetBitCount <= 32);
+  STATIC_ASSERT(1 + kStubMajorKeyBits +
+                kSafepointTableOffsetBitCount <= 32);
 
   class SafepointTableOffsetField: public BitField<int,
       kSafepointTableOffsetFirstBit,
@@ -4802,8 +4813,10 @@ class Code: public HeapObject {
       kStubMajorKeyFirstBit, kStubMajorKeyBits> {};  // NOLINT
 
   // KindSpecificFlags2 layout (FUNCTION)
-  class BackEdgeTableOffsetField: public BitField<int, 0, 31> {};
-  class BackEdgesPatchedForOSRField: public BitField<bool, 31, 1> {};
+  class BackEdgeTableOffsetField: public BitField<int,
+      kIsCrankshaftedBit + 1, 29> {};  // NOLINT
+  class BackEdgesPatchedForOSRField: public BitField<bool,
+      kIsCrankshaftedBit + 1 + 29, 1> {};  // NOLINT
 
   // Signed field cannot be encoded using the BitField class.
   static const int kArgumentsCountShift = 17;