Revert "Introduce a class to implement optimization passes."

This reverts commit bf9cd7ba2118a75f5aa9b56241c4d5fa00dedeb8.

Change-Id: I0a483446666c9c24c45925a5fc199debdefd8b3e

1 files changed, 0 insertions, 47 deletions

diff --git a/compiler/optimizing/constant_folding.cc b/compiler/optimizing/constant_folding.cc
deleted file mode 100644
index 0b3ad9809f..0000000000
--- a/compiler/optimizing/constant_folding.cc
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "constant_folding.h"
-
-namespace art {
-
-void HConstantFolding::Run() {
-  // Process basic blocks in reverse post-order in the dominator tree,
-  // so that an instruction turned into a constant, used as input of
-  // another instruction, may possibly be used to turn that second
-  // instruction into a constant as well.
-  for (HReversePostOrderIterator it(*graph_); !it.Done(); it.Advance()) {
-    HBasicBlock* block = it.Current();
-    // Traverse this block's instructions in (forward) order and
-    // replace the ones that can be statically evaluated by a
-    // compile-time counterpart.
-    for (HInstructionIterator it(block->GetInstructions());
-         !it.Done(); it.Advance()) {
-      HInstruction* inst = it.Current();
-      // Constant folding: replace `c <- a op b' with a compile-time
-      // evaluation of `a op b' if `a' and `b' are constant.
-      if (inst->IsBinaryOperation()) {
-        HConstant* constant =
-          inst->AsBinaryOperation()->TryStaticEvaluation(graph_->GetArena());
-        if (constant != nullptr) {
-          inst->GetBlock()->ReplaceAndRemoveInstructionWith(inst, constant);
-        }
-      }
-    }
-  }
-}
-
-}  // namespace art