Index: src/hydrogen-sce.cc |
diff --git a/src/hydrogen-sce.cc b/src/hydrogen-sce.cc |
deleted file mode 100644 |
index 235a94142de6eabe6be5c0684e5d1126ce520066..0000000000000000000000000000000000000000 |
--- a/src/hydrogen-sce.cc |
+++ /dev/null |
@@ -1,39 +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-sce.h" |
- |
-namespace v8 { |
-namespace internal { |
- |
-void HStackCheckEliminationPhase::Run() { |
- // For each loop block walk the dominator tree from the backwards branch to |
- // the loop header. If a call instruction is encountered the backwards branch |
- // is dominated by a call and the stack check in the backwards branch can be |
- // removed. |
- for (int i = 0; i < graph()->blocks()->length(); i++) { |
- HBasicBlock* block = graph()->blocks()->at(i); |
- if (block->IsLoopHeader()) { |
- HBasicBlock* back_edge = block->loop_information()->GetLastBackEdge(); |
- HBasicBlock* dominator = back_edge; |
- while (true) { |
- for (HInstructionIterator it(dominator); !it.Done(); it.Advance()) { |
- if (it.Current()->HasStackCheck()) { |
- block->loop_information()->stack_check()->Eliminate(); |
- break; |
- } |
- } |
- |
- // Done when the loop header is processed. |
- if (dominator == block) break; |
- |
- // Move up the dominator tree. |
- dominator = dominator->dominator(); |
- } |
- } |
- } |
-} |
- |
-} // namespace internal |
-} // namespace v8 |