| Index: src/hydrogen-dehoist.cc
|
| diff --git a/src/hydrogen-dehoist.cc b/src/hydrogen-dehoist.cc
|
| deleted file mode 100644
|
| index e521c25cdae47b0e3a9251e56e65fd99e016bd62..0000000000000000000000000000000000000000
|
| --- a/src/hydrogen-dehoist.cc
|
| +++ /dev/null
|
| @@ -1,71 +0,0 @@
|
| -// 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;
|
| -
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| - // Multiply value by elements size, bailing out on overflow.
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| - 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()) {
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| - DehoistArrayIndex(HLoadKeyed::cast(instr));
|
| - } else if (instr->IsStoreKeyed()) {
|
| - DehoistArrayIndex(HStoreKeyed::cast(instr));
|
| - }
|
| - }
|
| - }
|
| -}
|
| -
|
| -} // namespace internal
|
| -} // namespace v8
|
|
|