| Index: src/hydrogen-redundant-phi.cc
|
| diff --git a/src/hydrogen-redundant-phi.cc b/src/hydrogen-redundant-phi.cc
|
| deleted file mode 100644
|
| index 1b3c94a3db0c8670f755e619056d738a57d521b9..0000000000000000000000000000000000000000
|
| --- a/src/hydrogen-redundant-phi.cc
|
| +++ /dev/null
|
| @@ -1,66 +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-redundant-phi.h"
|
| -
|
| -namespace v8 {
|
| -namespace internal {
|
| -
|
| -void HRedundantPhiEliminationPhase::Run() {
|
| - // Gather all phis from all blocks first.
|
| - const ZoneList<HBasicBlock*>* blocks(graph()->blocks());
|
| - ZoneList<HPhi*> all_phis(blocks->length(), zone());
|
| - for (int i = 0; i < blocks->length(); ++i) {
|
| - HBasicBlock* block = blocks->at(i);
|
| - for (int j = 0; j < block->phis()->length(); j++) {
|
| - all_phis.Add(block->phis()->at(j), zone());
|
| - }
|
| - }
|
| -
|
| - // Iteratively reduce all phis in the list.
|
| - ProcessPhis(&all_phis);
|
| -
|
| -#if DEBUG
|
| - // Make sure that we *really* removed all redundant phis.
|
| - for (int i = 0; i < blocks->length(); ++i) {
|
| - for (int j = 0; j < blocks->at(i)->phis()->length(); j++) {
|
| - DCHECK(blocks->at(i)->phis()->at(j)->GetRedundantReplacement() == NULL);
|
| - }
|
| - }
|
| -#endif
|
| -}
|
| -
|
| -
|
| -void HRedundantPhiEliminationPhase::ProcessBlock(HBasicBlock* block) {
|
| - ProcessPhis(block->phis());
|
| -}
|
| -
|
| -
|
| -void HRedundantPhiEliminationPhase::ProcessPhis(const ZoneList<HPhi*>* phis) {
|
| - bool updated;
|
| - do {
|
| - // Iterately replace all redundant phis in the given list.
|
| - updated = false;
|
| - for (int i = 0; i < phis->length(); i++) {
|
| - HPhi* phi = phis->at(i);
|
| - if (phi->CheckFlag(HValue::kIsDead)) continue; // Already replaced.
|
| -
|
| - HValue* replacement = phi->GetRedundantReplacement();
|
| - if (replacement != NULL) {
|
| - phi->SetFlag(HValue::kIsDead);
|
| - for (HUseIterator it(phi->uses()); !it.Done(); it.Advance()) {
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| - HValue* value = it.value();
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| - value->SetOperandAt(it.index(), replacement);
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| - // Iterate again if used in another non-dead phi.
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| - updated |= value->IsPhi() && !value->CheckFlag(HValue::kIsDead);
|
| - }
|
| - phi->block()->RemovePhi(phi);
|
| - }
|
| - }
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| - } while (updated);
|
| -}
|
| -
|
| -
|
| -} // namespace internal
|
| -} // namespace v8
|
|
|