Refactor bv-intro-pow2 preprocessing pass. (#1851)

2 files changed, 0 insertions, 136 deletions

diff --git a/src/theory/bv/bvintropow2.cpp b/src/theory/bv/bvintropow2.cpp
deleted file mode 100644
index e7b6caaef..000000000
--- a/src/theory/bv/bvintropow2.cpp
+++ /dev/null
@@ -1,85 +0,0 @@
-/*********************                                                        */
-/*! \file bvintropow2.cpp
- ** \verbatim
- ** Top contributors (to current version):
- **   Liana Hadarean, Morgan Deters, Paul Meng
- ** This file is part of the CVC4 project.
- ** Copyright (c) 2009-2017 by the authors listed in the file AUTHORS
- ** in the top-level source directory) and their institutional affiliations.
- ** All rights reserved.  See the file COPYING in the top-level source
- ** directory for licensing information.\endverbatim
- **
- ** \brief [[ Add one-line brief description here ]]
- **
- ** [[ Add lengthier description here ]]
- ** \todo document this file
- **/
-
-#include "theory/bv/bvintropow2.h"
-#include "theory/rewriter.h"
-#include "theory/bv/theory_bv_rewrite_rules_simplification.h"
-
-
-namespace CVC4 {
-namespace theory {
-namespace bv {
-
-void BVIntroducePow2::pow2Rewrite(std::vector<Node>& assertionsToPreprocess){
-  NodeMap cache;
-  for(size_t i = 0, N= assertionsToPreprocess.size(); i < N; ++i){
-    Node curr = assertionsToPreprocess[i];
-    Node next = pow2Rewrite(curr, cache);
-    if(next != curr){
-      Node tmp = Rewriter::rewrite(next);
-      next = tmp;
-    }
-    assertionsToPreprocess[i] = next;
-  }
-}
-
-Node  BVIntroducePow2::pow2Rewrite(Node node, NodeMap& cache){
-  NodeMap::const_iterator ci = cache.find(node);
-  if(ci != cache.end()){
-    Node incache = (*ci).second;
-    
-    return incache.isNull() ? node : incache;
-  }
-
-  Node res = Node::null();
-  switch(node.getKind()){
-  case kind::AND:
-    {
-      bool changed = false;
-      std::vector<Node> children;
-      for(unsigned i = 0, N = node.getNumChildren(); i < N; ++i){
-        Node child = node[i];
-        Node found = pow2Rewrite(child, cache);
-        changed = changed || (child != found);
-        children.push_back(found);
-      }
-      if(changed){
-        res = NodeManager::currentNM()->mkNode(kind::AND, children);
-      }
-    }
-    break;
-
-  case kind::EQUAL:
-    if(node[0].getType().isBitVector()){
-      if (RewriteRule<IsPowerOfTwo>::applies(node)) {
-        res = RewriteRule<IsPowerOfTwo>::run<false>(node);
-      }
-    }
-    break;
-  default:
-    break;
-  }
-
-  cache.insert(std::make_pair(node, res));
-  return res.isNull() ? node : res;
-}
-
-
-}/* CVC4::theory::bv namespace */
-}/* CVC4::theory namespace */
-
-}/* CVC4 namespace */
diff --git a/src/theory/bv/bvintropow2.h b/src/theory/bv/bvintropow2.h
deleted file mode 100644
index e335c1339..000000000
--- a/src/theory/bv/bvintropow2.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*********************                                                        */
-/*! \file bvintropow2.h
- ** \verbatim
- ** Top contributors (to current version):
- **   Liana Hadarean, Morgan Deters, Paul Meng
- ** This file is part of the CVC4 project.
- ** Copyright (c) 2009-2017 by the authors listed in the file AUTHORS
- ** in the top-level source directory) and their institutional affiliations.
- ** All rights reserved.  See the file COPYING in the top-level source
- ** directory for licensing information.\endverbatim
- **
- ** \brief [[ Add one-line brief description here ]]
- **
- ** [[ Add lengthier description here ]]
- ** \todo document this file
- **/
-
-
-
-#include "cvc4_private.h"
-#include "expr/node.h"
-
-#include <vector>
-#include <unordered_map>
-
-#ifndef __CVC4__THEORY__BV__BV_INTRO_POW_H
-#define __CVC4__THEORY__BV__BV_INTRO_POW_H
-
-namespace CVC4 {
-namespace theory {
-namespace bv {
-
-
-class BVIntroducePow2 {
-public:
-  static void pow2Rewrite(std::vector<Node>& assertionsToPreprocess);
-
-private:
-  typedef std::unordered_map<Node, Node, NodeHashFunction> NodeMap;
-  static Node pow2Rewrite(Node assertionsToPreprocess, NodeMap& cache);
-}; 
-
-
-
-}/* CVC4::theory::bv namespace */
-}/* CVC4::theory namespace */
-
-}/* CVC4 namespace */
-
-
-#endif /* __CVC4__THEORY__BV__BV_INTRO_POW_H */