Do not eagerly update allow_osr_at_loop_nesting_level.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include "src/allocation.h"
 #include "src/assert-scope.h"
 #include "src/builtins.h"
@@ skipping 5559 matching lines @@
   // the instruction stream where the safepoint table starts.
   inline unsigned safepoint_table_offset();
   inline void set_safepoint_table_offset(unsigned offset);
 
   // [back_edge_table_start]: For kind FUNCTION, the offset in the
   // instruction stream where the back edge table starts.
   inline unsigned back_edge_table_offset();
   inline void set_back_edge_table_offset(unsigned offset);
 
   inline bool back_edges_patched_for_osr();
-  inline void set_back_edges_patched_for_osr(bool value);
 
   // [to_boolean_foo]: For kind TO_BOOLEAN_IC tells what state the stub is in.
   inline byte to_boolean_state();
 
   // [has_function_cache]: For kind STUB tells whether there is a function
   // cache is passed to the stub.
   inline bool has_function_cache();
   inline void set_has_function_cache(bool flag);
 
 
@@ skipping 224 matching lines @@
 
   // Byte offsets within kKindSpecificFlags1Offset.
   static const int kOptimizableOffset = kKindSpecificFlags1Offset;
 
   static const int kFullCodeFlags = kOptimizableOffset + 1;
   class FullCodeFlagsHasDeoptimizationSupportField:
       public BitField<bool, 0, 1> {};  // NOLINT
   class FullCodeFlagsHasDebugBreakSlotsField: public BitField<bool, 1, 1> {};
   class FullCodeFlagsIsCompiledOptimizable: public BitField<bool, 2, 1> {};
 
-  static const int kAllowOSRAtLoopNestingLevelOffset = kFullCodeFlags + 1;
-  static const int kProfilerTicksOffset = kAllowOSRAtLoopNestingLevelOffset + 1;
+  static const int kProfilerTicksOffset = kFullCodeFlags + 1;
 
   // Flags layout.  BitField<type, shift, size>.
   class ICStateField: public BitField<InlineCacheState, 0, 3> {};
   class TypeField: public BitField<StubType, 3, 1> {};
   class CacheHolderField: public BitField<InlineCacheHolderFlag, 5, 1> {};
   class KindField: public BitField<Kind, 6, 4> {};
   // TODO(bmeurer): Bit 10 is available for free use. :-)
   class ExtraICStateField: public BitField<ExtraICState, 11,
       PlatformSmiTagging::kSmiValueSize - 11 + 1> {};  // NOLINT
 
@@ skipping 50 matching lines @@
                 kSafepointTableOffsetBitCount <= 32);
 
   class SafepointTableOffsetField: public BitField<int,
       kSafepointTableOffsetFirstBit,
       kSafepointTableOffsetBitCount> {};  // NOLINT
   class StubMajorKeyField: public BitField<int,
       kStubMajorKeyFirstBit, kStubMajorKeyBits> {};  // NOLINT
 
   // KindSpecificFlags2 layout (FUNCTION)
   class BackEdgeTableOffsetField: public BitField<int,
-      kIsCrankshaftedBit + 1, 29> {};  // NOLINT
-  class BackEdgesPatchedForOSRField: public BitField<bool,
-      kIsCrankshaftedBit + 1 + 29, 1> {};  // NOLINT
+      kIsCrankshaftedBit + 1, 27> {};  // NOLINT
+  class AllowOSRAtLoopNestingLevelField: public BitField<int,
+      kIsCrankshaftedBit + 1 + 27, 4> {};  // NOLINT
+  STATIC_ASSERT(AllowOSRAtLoopNestingLevelField::kMax >= kMaxLoopNestingMarker);
 
   static const int kArgumentsBits = 16;
   static const int kMaxArguments = (1 << kArgumentsBits) - 1;
 
   // This constant should be encodable in an ARM instruction.
   static const int kFlagsNotUsedInLookup =
       TypeField::kMask | CacheHolderField::kMask;
 
  private:
   friend class RelocIterator;
@@ skipping 5234 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_