[ARM64] Make BufferDisassembler print the instruction encoding

src/arm64/disasm-arm64.cc

 // Copyright 2013 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.
 
 #include <assert.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <string.h>
 
 #if V8_TARGET_ARCH_ARM64
@@ skipping 1784 matching lines @@
 //------------------------------------------------------------------------------
 
 class BufferDisassembler : public v8::internal::DisassemblingDecoder {
  public:
   explicit BufferDisassembler(v8::internal::Vector<char> out_buffer)
       : out_buffer_(out_buffer) { }
 
   ~BufferDisassembler() { }
 
   virtual void ProcessOutput(v8::internal::Instruction* instr) {
-    v8::internal::SNPrintF(out_buffer_, "%s", GetOutput());
+    v8::internal::SNPrintF(out_buffer_, "%08" PRIx32 "       %s",
+                           instr->InstructionBits(), GetOutput());
   }
 
  private:
   v8::internal::Vector<char> out_buffer_;
 };
 
 Disassembler::Disassembler(const NameConverter& converter)
     : converter_(converter) {}
 
 
@@ skipping 23 matching lines @@
   decoder.AppendVisitor(&disasm);
 
   for (byte* pc = start; pc < end; pc += v8::internal::kInstructionSize) {
     decoder.Decode(reinterpret_cast<v8::internal::Instruction*>(pc));
   }
 }
 
 }  // namespace disasm
 
 #endif  // V8_TARGET_ARCH_ARM64