Simplify known successor block lowering.

src/lithium.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 "v8.h"
 #include "lithium.h"
 #include "scopes.h"
 #include "serialize.h"
 
 #if V8_TARGET_ARCH_IA32
@@ skipping 594 matching lines @@
   // Recursively store all the nested captured objects into the environment
   for (int i = is_arguments ? 1 : 0; i < length; ++i) {
     HValue* arg_value = value->OperandAt(i);
     if (arg_value->IsArgumentsObject() || arg_value->IsCapturedObject()) {
       AddObjectToMaterialize(arg_value, objects_to_materialize, result);
     }
   }
 }
 
 
-LInstruction* LChunkBuilder::CheckElideControlInstruction(
-    HControlInstruction* instr) {
-  HBasicBlock* successor;
-  if (!instr->KnownSuccessorBlock(&successor)) return NULL;
-  return new(zone()) LGoto(successor);
-}
-
-
 LPhase::~LPhase() {
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceLithium(name(), chunk_);
   }
 }
 
 
 } }  // namespace v8::internal