Adds more DBC assembler tests

runtime/vm/constants_dbc.h

 // Copyright (c) 2016, 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_CONSTANTS_DBC_H_
 #define VM_CONSTANTS_DBC_H_
 
 #include "platform/globals.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 284 matching lines @@
 //
 //  - DebugStep, DebugBreak A
 //
 //    Debugger support. DebugBreak is bytecode that can be patched into the
 //    instruction stream to trigger in place breakpoint.
 //
 //    When patching instance or static call with DebugBreak we set A to
 //    match patched call's argument count so that Return instructions continue
 //    to work.
 //
+//  - LoadClassIdTOS, LoadClassId rA, D
+//
+//    LoadClassIdTOS loads the class id from the object at SP[0] and stores it
+//    to SP[0]. LoadClassId loads the class id from FP[rA] and stores it to
+//    FP[D].
+//
 // TODO(vegorov) the way we replace calls with DebugBreak does not work
 //               with our smi fast paths because DebugBreak is simply skipped.
 //
 // BYTECODE LIST FORMAT
 //
 // Bytecode list below is specified using the following format:
 //
 //     V(BytecodeName, OperandForm, Op1, Op2, Op3)
 //
 // - OperandForm specifies operand encoding and should be one of 0, A, T, A_D,
@@ skipping 172 matching lines @@
   kNumberOfDummyFpuRegisters,
 };
 const FpuRegister FpuTMP = kFakeFpuRegister;
 const intptr_t kNumberOfFpuRegisters = 1;
 
 enum Condition { EQ, NE };
 
 }  // namespace dart
 
 #endif  // VM_CONSTANTS_DBC_H_