Add delete operators for Instruction to make Visual C++ happy.

src/compiler/instruction.h

Index: src/compiler/instruction.h
diff --git a/src/compiler/instruction.h b/src/compiler/instruction.h
index c461955493ce3301e2941c9bfd678a9f14dbd55f..92b785bb3f4d2bff51fcd0a34af5577e0555c9c7 100644
--- a/src/compiler/instruction.h
+++ b/src/compiler/instruction.h
@@ -489,6 +489,9 @@ class Instruction : public ZoneObject {
   // zone-allocated memory.
   void* operator new(size_t, void* location) { return location; }
 
+  void operator delete(void*, size_t) { UNREACHABLE(); }

[Sven Panne, 2014/07/31 06:45:51]

I don't understand this commit: Why do we have to define new/delete here at all?
Instruction inherits from ZoneObject, which has exactly these definitions?
Probably we should have removed the new here instead of adding the deletes, I
gues...

+  void operator delete(void* pointer, Zone* zone) { UNREACHABLE(); }
+
  protected:
   explicit Instruction(InstructionCode opcode)
       : opcode_(opcode),