revert r25736

src/compiler/instruction.cc

 // Copyright 2014 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 "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/instruction.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 std::ostream& operator<<(std::ostream& os,
                          const PrintableInstructionOperand& printable) {
   const InstructionOperand& op = *printable.op_;
   const RegisterConfiguration* conf = printable.register_configuration_;
   switch (op.kind()) {
+    case InstructionOperand::INVALID:
+      return os << "(0)";
     case InstructionOperand::UNALLOCATED: {
       const UnallocatedOperand* unalloc = UnallocatedOperand::cast(&op);
       os << "v" << unalloc->virtual_register();
       if (unalloc->basic_policy() == UnallocatedOperand::FIXED_SLOT) {
         return os << "(=" << unalloc->fixed_slot_index() << "S)";
       }
       switch (unalloc->extended_policy()) {
         case UnallocatedOperand::NONE:
           return os;
         case UnallocatedOperand::FIXED_REGISTER:
@@ skipping 651 matching lines @@
       os << " B" << succ_block->id();
     }
     os << "\n";
   }
   return os;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8