[crankshaft] Delete unused Hydrogen-BCH code

src/crankshaft/s390/lithium-s390.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/crankshaft/s390/lithium-s390.h"
 
 #include <sstream>
 
 #include "src/crankshaft/hydrogen-osr.h"
 #include "src/crankshaft/lithium-inl.h"
@@ skipping 1597 matching lines @@
   LOperand* length = !index->IsConstantOperand()
                          ? UseRegisterOrConstantAtStart(instr->length())
                          : UseRegisterAtStart(instr->length());
   LInstruction* result = new (zone()) LBoundsCheck(index, length);
   if (!FLAG_debug_code || !instr->skip_check()) {
     result = AssignEnvironment(result);
   }
   return result;
 }
 
-LInstruction* LChunkBuilder::DoBoundsCheckBaseIndexInformation(
-    HBoundsCheckBaseIndexInformation* instr) {
-  UNREACHABLE();
-  return NULL;
-}
-
 LInstruction* LChunkBuilder::DoAbnormalExit(HAbnormalExit* instr) {
   // The control instruction marking the end of a block that completed
   // abruptly (e.g., threw an exception).  There is nothing specific to do.
   return NULL;
 }
 
 LInstruction* LChunkBuilder::DoUseConst(HUseConst* instr) { return NULL; }
 
 LInstruction* LChunkBuilder::DoForceRepresentation(HForceRepresentation* bad) {
   // All HForceRepresentation instructions should be eliminated in the
@@ skipping 665 matching lines @@
   return AssignPointerMap(result);
 }
 
 LInstruction* LChunkBuilder::DoStoreFrameContext(HStoreFrameContext* instr) {
   LOperand* context = UseRegisterAtStart(instr->context());
   return new (zone()) LStoreFrameContext(context);
 }
 
 }  // namespace internal
 }  // namespace v8