DBC: Fix reading locals out of a deopt frame.

runtime/vm/stack_frame.h

 // Copyright (c) 2011, 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_STACK_FRAME_H_
 #define VM_STACK_FRAME_H_
 
 #include "vm/allocation.h"
 #include "vm/object.h"
 #include "vm/stub_code.h"
@@ skipping 318 matching lines @@
     return code_.raw();
   }
 
   intptr_t GetDeoptFpOffset() const;
 
  private:
   void SetDone() { index_ = -1; }
 
   intptr_t index_;
   intptr_t num_materializations_;
+  intptr_t dest_frame_size_;
   Code& code_;
   TypedData& deopt_info_;
   Function& function_;
   uword pc_;
   GrowableArray<DeoptInstr*> deopt_instructions_;
   ObjectPool& object_table_;
 
   DISALLOW_COPY_AND_ASSIGN(InlinedFunctionsIterator);
 };
 
 #if !defined(TARGET_ARCH_DBC)
 DART_FORCE_INLINE static uword LocalVarAddress(uword fp, intptr_t index) {
   return fp + (index * kWordSize);
 }
 
 
+DART_FORCE_INLINE static intptr_t LocalVarIndex(intptr_t fp_offset,
+                                                intptr_t var_index) {
+  return fp_offset + var_index;
+}
+
+
 DART_FORCE_INLINE static uword ParamAddress(uword fp, intptr_t reverse_index) {
   return fp + (kParamEndSlotFromFp * kWordSize) + (reverse_index * kWordSize);
 }
 
 
 DART_FORCE_INLINE static bool IsCalleeFrameOf(uword fp, uword other_fp) {
   return other_fp < fp;
 }
 
 // Value for stack limit that is used to cause an interrupt.
 // Note that on DBC stack is growing upwards so interrupt limit is 0 unlike
 // on all other architectures.
 static const uword kInterruptStackLimit = ~static_cast<uword>(0);
 #endif
 
 }  // namespace dart
 
 #endif  // VM_STACK_FRAME_H_