VM: Cache instructions entry point in RawFunction/RawCode.

runtime/vm/raw_object.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_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/atomic.h"
 #include "vm/globals.h"
@@ skipping 753 matching lines @@
   // Fields below are not part of the snapshot.
   RawArray* ic_data_array_;  // ICData of unoptimized code.
   RawObject** to_no_code() {
     return reinterpret_cast<RawObject**>(&ptr()->ic_data_array_);
   }
   RawInstructions* instructions_;  // Instructions of currently active code.
   RawCode* unoptimized_code_;  // Unoptimized code, keep it after optimization.
   RawObject** to() {
     return reinterpret_cast<RawObject**>(&ptr()->unoptimized_code_);
   }
+  uword entry_point_;
 
   int32_t token_pos_;
   int32_t end_token_pos_;
   int32_t usage_counter_;  // Incremented while function is running.
   int16_t num_fixed_parameters_;
   int16_t num_optional_parameters_;  // > 0: positional; < 0: named.
   int16_t deoptimization_counter_;
   uint32_t kind_tag_;  // See Function::KindTagBits.
   uint16_t optimized_instruction_count_;
   uint16_t optimized_call_site_count_;
@@ skipping 212 matching lines @@
   RawArray* stackmaps_;
   RawLocalVarDescriptors* var_descriptors_;
   RawArray* inlined_metadata_;
   RawArray* comments_;
   // If return_address_info_ is a Smi, it is the offset to the prologue.
   // Else, return_address_info_ is null.
   RawObject* return_address_metadata_;
   RawObject** to() {
     return reinterpret_cast<RawObject**>(&ptr()->comments_);
   }
+  uword entry_point_;
 
   // Compilation timestamp.
   int64_t compile_timestamp_;
 
   // state_bits_ is a bitfield with three fields:
   // The optimized bit, the alive bit, and a count of the number of pointer
   // offsets.
   // Alive: If true, the embedded object pointers will be visited during GC.
   int32_t state_bits_;
 
@@ skipping 1177 matching lines @@
   COMPILE_ASSERT(kExternalTypedDataInt8ArrayCid ==
                  kTypedDataInt8ArrayViewCid + 15);
   COMPILE_ASSERT(kByteBufferCid == kExternalTypedDataInt8ArrayCid + 14);
   COMPILE_ASSERT(kNullCid == kByteBufferCid + 1);
   return (kNullCid - kTypedDataInt8ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_