[crankshaft] Remove the useless HCallStub instruction.

src/crankshaft/hydrogen-instructions.cc

 // Copyright 2012 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/crankshaft/hydrogen-instructions.h"
 
 #include "src/base/bits.h"
 #include "src/base/safe_math.h"
 #include "src/crankshaft/hydrogen-infer-representation.h"
 #include "src/double.h"
@@ skipping 758 matching lines @@
     case HValue::kAbnormalExit:
     case HValue::kAccessArgumentsAt:
     case HValue::kAllocate:
     case HValue::kArgumentsElements:
     case HValue::kArgumentsLength:
     case HValue::kArgumentsObject:
     case HValue::kBlockEntry:
     case HValue::kBoundsCheckBaseIndexInformation:
     case HValue::kCallFunction:
     case HValue::kCallNewArray:
-    case HValue::kCallStub:
     case HValue::kCapturedObject:
     case HValue::kClassOfTestAndBranch:
     case HValue::kCompareGeneric:
     case HValue::kCompareHoleAndBranch:
     case HValue::kCompareMap:
     case HValue::kCompareNumericAndBranch:
     case HValue::kCompareObjectEqAndBranch:
     case HValue::kConstant:
     case HValue::kConstructDouble:
     case HValue::kContext:
@@ skipping 933 matching lines @@
 }
 
 
 std::ostream& HCheckInstanceType::PrintDataTo(
     std::ostream& os) const {  // NOLINT
   os << GetCheckName() << " ";
   return HUnaryOperation::PrintDataTo(os);
 }
 
 
-std::ostream& HCallStub::PrintDataTo(std::ostream& os) const {  // NOLINT
-  os << CodeStub::MajorName(major_key_) << " ";
-  return HUnaryCall::PrintDataTo(os);
-}
-
-
 std::ostream& HUnknownOSRValue::PrintDataTo(std::ostream& os) const {  // NOLINT
   const char* type = "expression";
   if (environment_->is_local_index(index_)) type = "local";
   if (environment_->is_special_index(index_)) type = "special";
   if (environment_->is_parameter_index(index_)) type = "parameter";
   return os << type << " @ " << index_;
 }
 
 
 std::ostream& HInstanceOf::PrintDataTo(std::ostream& os) const {  // NOLINT
@@ skipping 2908 matching lines @@
     case HObjectAccess::kExternalMemory:
       os << "[external-memory]";
       break;
   }
 
   return os << "@" << access.offset();
 }
 
 }  // namespace internal
 }  // namespace v8