Move Hydrogen and Lithium to src/crankshaft/

src/hydrogen-dehoist.cc

-// Copyright 2013 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/hydrogen-dehoist.h"
-#include "src/base/safe_math.h"
-
-namespace v8 {
-namespace internal {
-
-static void DehoistArrayIndex(ArrayInstructionInterface* array_operation) {
-  HValue* index = array_operation->GetKey()->ActualValue();
-  if (!index->representation().IsSmiOrInteger32()) return;
-  if (!index->IsAdd() && !index->IsSub()) return;
-
-  HConstant* constant;
-  HValue* subexpression;
-  HBinaryOperation* binary_operation = HBinaryOperation::cast(index);
-  if (binary_operation->left()->IsConstant() && index->IsAdd()) {
-    subexpression = binary_operation->right();
-    constant = HConstant::cast(binary_operation->left());
-  } else if (binary_operation->right()->IsConstant()) {
-    subexpression = binary_operation->left();
-    constant = HConstant::cast(binary_operation->right());
-  } else {
-    return;
-  }
-
-  if (!constant->HasInteger32Value()) return;
-  v8::base::internal::CheckedNumeric<int32_t> checked_value =
-      constant->Integer32Value();
-  int32_t sign = binary_operation->IsSub() ? -1 : 1;
-  checked_value = checked_value * sign;
-
-  // Multiply value by elements size, bailing out on overflow.
-  int32_t elements_kind_size =
-      1 << ElementsKindToShiftSize(array_operation->elements_kind());
-  checked_value = checked_value * elements_kind_size;
-  if (!checked_value.IsValid()) return;
-  int32_t value = checked_value.ValueOrDie();
-  if (value < 0) return;
-
-  // Ensure that the array operation can add value to existing base offset
-  // without overflowing.
-  if (!array_operation->TryIncreaseBaseOffset(value)) return;
-
-  array_operation->SetKey(subexpression);
-  if (binary_operation->HasNoUses()) {
-    binary_operation->DeleteAndReplaceWith(NULL);
-  }
-
-  array_operation->SetDehoisted(true);
-}
-
-
-void HDehoistIndexComputationsPhase::Run() {
-  const ZoneList<HBasicBlock*>* blocks(graph()->blocks());
-  for (int i = 0; i < blocks->length(); ++i) {
-    for (HInstructionIterator it(blocks->at(i)); !it.Done(); it.Advance()) {
-      HInstruction* instr = it.Current();
-      if (instr->IsLoadKeyed()) {
-        DehoistArrayIndex(HLoadKeyed::cast(instr));
-      } else if (instr->IsStoreKeyed()) {
-        DehoistArrayIndex(HStoreKeyed::cast(instr));
-      }
-    }
-  }
-}
-
-}  // namespace internal
-}  // namespace v8