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/****************************************************************************** |
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* Top contributors (to current version): |
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* Liana Hadarean, Clark Barrett, Aina Niemetz |
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* |
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* This file is part of the cvc5 project. |
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* |
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* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS |
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* in the top-level source directory and their institutional affiliations. |
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* All rights reserved. See the file COPYING in the top-level source |
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* directory for licensing information. |
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* **************************************************************************** |
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* |
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* [[ Add one-line brief description here ]] |
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* |
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* [[ Add lengthier description here ]] |
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* \todo document this file |
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*/ |
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#include "cvc5_private.h" |
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#pragma once |
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#include "theory/bv/theory_bv_rewrite_rules.h" |
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#include "theory/bv/theory_bv_utils.h" |
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#include "util/bitvector.h" |
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namespace cvc5 { |
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namespace theory { |
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namespace bv { |
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template<> inline |
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bool RewriteRule<EvalAnd>::applies(TNode node) { |
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Unreachable(); |
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return (node.getKind() == kind::BITVECTOR_AND && |
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node.getNumChildren() == 2 && |
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utils::isBvConstTerm(node)); |
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} |
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template<> inline |
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Node RewriteRule<EvalAnd>::apply(TNode node) { |
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Unreachable(); |
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Debug("bv-rewrite") << "RewriteRule<EvalAnd>(" << node << ")" << std::endl; |
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BitVector a = node[0].getConst<BitVector>(); |
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BitVector b = node[1].getConst<BitVector>(); |
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BitVector res = a & b; |
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return utils::mkConst(res); |
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} |
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template<> inline |
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bool RewriteRule<EvalOr>::applies(TNode node) { |
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Unreachable(); |
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return (node.getKind() == kind::BITVECTOR_OR && |
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node.getNumChildren() == 2 && |
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utils::isBvConstTerm(node)); |
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} |
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template<> inline |
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Node RewriteRule<EvalOr>::apply(TNode node) { |
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Unreachable(); |
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Debug("bv-rewrite") << "RewriteRule<EvalOr>(" << node << ")" << std::endl; |
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BitVector a = node[0].getConst<BitVector>(); |
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BitVector b = node[1].getConst<BitVector>(); |
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BitVector res = a | b; |
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return utils::mkConst(res); |
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} |
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template<> inline |
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bool RewriteRule<EvalXor>::applies(TNode node) { |
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Unreachable(); |
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return (node.getKind() == kind::BITVECTOR_XOR && |
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node.getNumChildren() == 2 && |
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utils::isBvConstTerm(node)); |
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} |
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template<> inline |
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Node RewriteRule<EvalXor>::apply(TNode node) { |
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Unreachable(); |
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Debug("bv-rewrite") << "RewriteRule<EvalXor>(" << node << ")" << std::endl; |
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BitVector a = node[0].getConst<BitVector>(); |
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BitVector b = node[1].getConst<BitVector>(); |
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BitVector res = a ^ b; |
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return utils::mkConst(res); |
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} |
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// template<> inline |
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// bool RewriteRule<EvalXnor>::applies(TNode node) { |
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// return (node.getKind() == kind::BITVECTOR_XNOR && |
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// utils::isBvConstTerm(node)); |
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// } |
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// template<> inline |
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// Node RewriteRule<EvalXnor>::apply(TNode node) { |
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// Debug("bv-rewrite") << "RewriteRule<EvalXnor>(" << node << ")" << std::endl; |
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// BitVector a = node[0].getConst<BitVector>(); |
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// BitVector b = node[1].getConst<BitVector>(); |
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// BitVector res = ~ (a ^ b); |
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// return utils::mkConst(res); |
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// } |
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template<> inline |
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158405 |
bool RewriteRule<EvalNot>::applies(TNode node) { |
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return (node.getKind() == kind::BITVECTOR_NOT && |
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utils::isBvConstTerm(node)); |
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} |
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template<> inline |
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Node RewriteRule<EvalNot>::apply(TNode node) { |
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Debug("bv-rewrite") << "RewriteRule<EvalNot>(" << node << ")" << std::endl; |
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BitVector a = node[0].getConst<BitVector>(); |
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BitVector res = ~ a; |
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return utils::mkConst(res); |
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} |
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// template<> inline |
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// bool RewriteRule<EvalComp>::applies(TNode node) { |
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// return (node.getKind() == kind::BITVECTOR_COMP && |
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// utils::isBvConstTerm(node)); |
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// } |
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// template<> inline |
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// Node RewriteRule<EvalComp>::apply(TNode node) { |
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// Debug("bv-rewrite") << "RewriteRule<EvalComp>(" << node << ")" << std::endl; |
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// BitVector a = node[0].getConst<BitVector>(); |
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// BitVector b = node[1].getConst<BitVector>(); |
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// BitVector res; |
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// if (a == b) { |
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// res = BitVector(1, Integer(1)); |
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// } else { |
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// res = BitVector(1, Integer(0)); |
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// } |
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// return utils::mkConst(res); |
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// } |
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template<> inline |
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bool RewriteRule<EvalMult>::applies(TNode node) { |
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return (node.getKind() == kind::BITVECTOR_MULT && |
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utils::isBvConstTerm(node)); |
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} |
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template<> inline |
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Node RewriteRule<EvalMult>::apply(TNode node) { |
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Debug("bv-rewrite") << "RewriteRule<EvalMult>(" << node << ")" << std::endl; |
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TNode::iterator child_it = node.begin(); |
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BitVector res = (*child_it).getConst<BitVector>(); |
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for(++child_it; child_it != node.end(); ++child_it) { |
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res = res * (*child_it).getConst<BitVector>(); |
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} |
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return utils::mkConst(res); |
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} |
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template <> |
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inline bool RewriteRule<EvalAdd>::applies(TNode node) |
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{ |
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return (node.getKind() == kind::BITVECTOR_ADD && utils::isBvConstTerm(node)); |
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} |
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template <> |
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inline Node RewriteRule<EvalAdd>::apply(TNode node) |
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{ |
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Debug("bv-rewrite") << "RewriteRule<EvalAdd>(" << node << ")" << std::endl; |
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TNode::iterator child_it = node.begin(); |
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BitVector res = (*child_it).getConst<BitVector>(); |
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for(++child_it; child_it != node.end(); ++child_it) { |
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res = res + (*child_it).getConst<BitVector>(); |
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} |
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return utils::mkConst(res); |
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} |
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// template<> inline |
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// bool RewriteRule<EvalSub>::applies(TNode node) { |
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// return (node.getKind() == kind::BITVECTOR_SUB && |
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// utils::isBvConstTerm(node)); |
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// } |
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// template<> inline |
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// Node RewriteRule<EvalSub>::apply(TNode node) { |
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// Debug("bv-rewrite") << "RewriteRule<EvalSub>(" << node << ")" << std::endl; |
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// BitVector a = node[0].getConst<BitVector>(); |
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// BitVector b = node[1].getConst<BitVector>(); |
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// BitVector res = a - b; |
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// return utils::mkConst(res); |
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// } |
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template<> inline |
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bool RewriteRule<EvalNeg>::applies(TNode node) { |
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return (node.getKind() == kind::BITVECTOR_NEG && |
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utils::isBvConstTerm(node)); |
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} |
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template<> inline |
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Node RewriteRule<EvalNeg>::apply(TNode node) { |
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Debug("bv-rewrite") << "RewriteRule<EvalNeg>(" << node << ")" << std::endl; |
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BitVector a = node[0].getConst<BitVector>(); |
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BitVector res = - a; |
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return utils::mkConst(res); |
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} |
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template<> inline |
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bool RewriteRule<EvalUdiv>::applies(TNode node) { |
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return utils::isBvConstTerm(node) && node.getKind() == kind::BITVECTOR_UDIV; |
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} |
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template<> inline |
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Node RewriteRule<EvalUdiv>::apply(TNode node) { |
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Debug("bv-rewrite") << "RewriteRule<EvalUdiv>(" << node << ")" << std::endl; |
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BitVector a = node[0].getConst<BitVector>(); |
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BitVector b = node[1].getConst<BitVector>(); |
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BitVector res = a.unsignedDivTotal(b); |
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return utils::mkConst(res); |
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} |
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template<> inline |
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bool RewriteRule<EvalUrem>::applies(TNode node) { |
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return utils::isBvConstTerm(node) && node.getKind() == kind::BITVECTOR_UREM; |
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} |
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template<> inline |
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Node RewriteRule<EvalUrem>::apply(TNode node) { |
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Debug("bv-rewrite") << "RewriteRule<EvalUrem>(" << node << ")" << std::endl; |
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BitVector a = node[0].getConst<BitVector>(); |
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BitVector b = node[1].getConst<BitVector>(); |
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BitVector res = a.unsignedRemTotal(b); |
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return utils::mkConst(res); |
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} |
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template<> inline |
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bool RewriteRule<EvalShl>::applies(TNode node) { |
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return (node.getKind() == kind::BITVECTOR_SHL && |
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utils::isBvConstTerm(node)); |
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} |
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template<> inline |
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Node RewriteRule<EvalShl>::apply(TNode node) { |
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Debug("bv-rewrite") << "RewriteRule<EvalShl>(" << node << ")" << std::endl; |
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BitVector a = node[0].getConst<BitVector>(); |
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BitVector b = node[1].getConst<BitVector>(); |
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BitVector res = a.leftShift(b); |
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return utils::mkConst(res); |
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} |
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template<> inline |
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bool RewriteRule<EvalLshr>::applies(TNode node) { |
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return (node.getKind() == kind::BITVECTOR_LSHR && |
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utils::isBvConstTerm(node)); |
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} |
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template<> inline |
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Node RewriteRule<EvalLshr>::apply(TNode node) { |
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Debug("bv-rewrite") << "RewriteRule<EvalLshr>(" << node << ")" << std::endl; |
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BitVector a = node[0].getConst<BitVector>(); |
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BitVector b = node[1].getConst<BitVector>(); |
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BitVector res = a.logicalRightShift(b); |
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return utils::mkConst(res); |
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} |
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template<> inline |
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bool RewriteRule<EvalAshr>::applies(TNode node) { |
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return (node.getKind() == kind::BITVECTOR_ASHR && |
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utils::isBvConstTerm(node)); |
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} |
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template<> inline |
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Node RewriteRule<EvalAshr>::apply(TNode node) { |
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Debug("bv-rewrite") << "RewriteRule<EvalAshr>(" << node << ")" << std::endl; |
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BitVector a = node[0].getConst<BitVector>(); |
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BitVector b = node[1].getConst<BitVector>(); |
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BitVector res = a.arithRightShift(b); |
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return utils::mkConst(res); |
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} |
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template<> inline |
279 |
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bool RewriteRule<EvalUlt>::applies(TNode node) { |
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372942 |
return (node.getKind() == kind::BITVECTOR_ULT && |
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372942 |
utils::isBvConstTerm(node)); |
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} |
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template<> inline |
285 |
2046 |
Node RewriteRule<EvalUlt>::apply(TNode node) { |
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Debug("bv-rewrite") << "RewriteRule<EvalUlt>(" << node << ")" << std::endl; |
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4092 |
BitVector a = node[0].getConst<BitVector>(); |
288 |
4092 |
BitVector b = node[1].getConst<BitVector>(); |
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290 |
2046 |
if (a.unsignedLessThan(b)) { |
291 |
938 |
return utils::mkTrue(); |
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} |
293 |
1108 |
return utils::mkFalse(); |
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} |
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template<> inline |
297 |
5860 |
bool RewriteRule<EvalUltBv>::applies(TNode node) { |
298 |
17580 |
return (node.getKind() == kind::BITVECTOR_ULTBV && |
299 |
17580 |
utils::isBvConstTerm(node)); |
300 |
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} |
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template<> inline |
303 |
932 |
Node RewriteRule<EvalUltBv>::apply(TNode node) { |
304 |
932 |
Debug("bv-rewrite") << "RewriteRule<EvalUltBv>(" << node << ")" << std::endl; |
305 |
1864 |
BitVector a = node[0].getConst<BitVector>(); |
306 |
1864 |
BitVector b = node[1].getConst<BitVector>(); |
307 |
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308 |
932 |
if (a.unsignedLessThan(b)) { |
309 |
445 |
return utils::mkConst(1,1); |
310 |
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} |
311 |
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return utils::mkConst(1, 0); |
312 |
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} |
313 |
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template<> inline |
315 |
142646 |
bool RewriteRule<EvalSlt>::applies(TNode node) { |
316 |
427938 |
return (node.getKind() == kind::BITVECTOR_SLT && |
317 |
427938 |
utils::isBvConstTerm(node)); |
318 |
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} |
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320 |
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template<> inline |
321 |
2094 |
Node RewriteRule<EvalSlt>::apply(TNode node) { |
322 |
2094 |
Debug("bv-rewrite") << "RewriteRule<EvalSlt>(" << node << ")" << std::endl; |
323 |
4188 |
BitVector a = node[0].getConst<BitVector>(); |
324 |
4188 |
BitVector b = node[1].getConst<BitVector>(); |
325 |
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326 |
2094 |
if (a.signedLessThan(b)) { |
327 |
825 |
return utils::mkTrue(); |
328 |
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} |
329 |
1269 |
return utils::mkFalse(); |
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331 |
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} |
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template<> inline |
334 |
8761 |
bool RewriteRule<EvalSltBv>::applies(TNode node) { |
335 |
26283 |
return (node.getKind() == kind::BITVECTOR_SLTBV && |
336 |
26283 |
utils::isBvConstTerm(node)); |
337 |
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} |
338 |
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339 |
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template<> inline |
340 |
571 |
Node RewriteRule<EvalSltBv>::apply(TNode node) { |
341 |
571 |
Debug("bv-rewrite") << "RewriteRule<EvalSltBv>(" << node << ")" << std::endl; |
342 |
1142 |
BitVector a = node[0].getConst<BitVector>(); |
343 |
1142 |
BitVector b = node[1].getConst<BitVector>(); |
344 |
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345 |
571 |
if (a.signedLessThan(b)) { |
346 |
316 |
return utils::mkConst(1, 1); |
347 |
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} |
348 |
255 |
return utils::mkConst(1, 0); |
349 |
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350 |
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} |
351 |
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352 |
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template<> inline |
353 |
31629 |
bool RewriteRule<EvalITEBv>::applies(TNode node) { |
354 |
31629 |
Debug("bv-rewrite") << "RewriteRule<EvalITEBv>::applies(" << node << ")" << std::endl; |
355 |
94887 |
return (node.getKind() == kind::BITVECTOR_ITE && |
356 |
94887 |
utils::isBvConstTerm(node)); |
357 |
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} |
358 |
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359 |
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template<> inline |
360 |
1430 |
Node RewriteRule<EvalITEBv>::apply(TNode node) { |
361 |
1430 |
Debug("bv-rewrite") << "RewriteRule<EvalITEBv>(" << node << ")" << std::endl; |
362 |
2860 |
BitVector cond = node[0].getConst<BitVector>(); |
363 |
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364 |
1430 |
if (node[0] == utils::mkConst(1, 1)) { |
365 |
628 |
return node[1]; |
366 |
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} else { |
367 |
802 |
Assert(node[0] == utils::mkConst(1, 0)); |
368 |
802 |
return node[2]; |
369 |
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} |
370 |
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} |
371 |
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372 |
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template<> inline |
373 |
6459 |
bool RewriteRule<EvalUle>::applies(TNode node) { |
374 |
19377 |
return (node.getKind() == kind::BITVECTOR_ULE && |
375 |
19377 |
utils::isBvConstTerm(node)); |
376 |
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} |
377 |
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|
378 |
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template<> inline |
379 |
26 |
Node RewriteRule<EvalUle>::apply(TNode node) { |
380 |
26 |
Debug("bv-rewrite") << "RewriteRule<EvalUle>(" << node << ")" << std::endl; |
381 |
52 |
BitVector a = node[0].getConst<BitVector>(); |
382 |
52 |
BitVector b = node[1].getConst<BitVector>(); |
383 |
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|
384 |
26 |
if (a.unsignedLessThanEq(b)) { |
385 |
20 |
return utils::mkTrue(); |
386 |
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} |
387 |
6 |
return utils::mkFalse(); |
388 |
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} |
389 |
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|
390 |
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template<> inline |
391 |
6826 |
bool RewriteRule<EvalSle>::applies(TNode node) { |
392 |
20478 |
return (node.getKind() == kind::BITVECTOR_SLE && |
393 |
20478 |
utils::isBvConstTerm(node)); |
394 |
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} |
395 |
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396 |
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template<> inline |
397 |
25 |
Node RewriteRule<EvalSle>::apply(TNode node) { |
398 |
25 |
Debug("bv-rewrite") << "RewriteRule<EvalSle>(" << node << ")" << std::endl; |
399 |
50 |
BitVector a = node[0].getConst<BitVector>(); |
400 |
50 |
BitVector b = node[1].getConst<BitVector>(); |
401 |
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|
402 |
25 |
if (a.signedLessThanEq(b)) { |
403 |
25 |
return utils::mkTrue(); |
404 |
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} |
405 |
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return utils::mkFalse(); |
406 |
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} |
407 |
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408 |
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template<> inline |
409 |
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bool RewriteRule<EvalExtract>::applies(TNode node) { |
410 |
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return (node.getKind() == kind::BITVECTOR_EXTRACT && |
411 |
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utils::isBvConstTerm(node)); |
412 |
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} |
413 |
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414 |
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template<> inline |
415 |
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Node RewriteRule<EvalExtract>::apply(TNode node) { |
416 |
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Debug("bv-rewrite") << "RewriteRule<EvalExtract>(" << node << ")" << std::endl; |
417 |
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BitVector a = node[0].getConst<BitVector>(); |
418 |
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unsigned lo = utils::getExtractLow(node); |
419 |
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unsigned hi = utils::getExtractHigh(node); |
420 |
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421 |
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BitVector res = a.extract(hi, lo); |
422 |
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return utils::mkConst(res); |
423 |
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} |
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|
426 |
|
template<> inline |
427 |
|
bool RewriteRule<EvalConcat>::applies(TNode node) { |
428 |
|
return (node.getKind() == kind::BITVECTOR_CONCAT && |
429 |
|
utils::isBvConstTerm(node)); |
430 |
|
} |
431 |
|
|
432 |
|
template<> inline |
433 |
|
Node RewriteRule<EvalConcat>::apply(TNode node) { |
434 |
|
Debug("bv-rewrite") << "RewriteRule<EvalConcat>(" << node << ")" << std::endl; |
435 |
|
unsigned num = node.getNumChildren(); |
436 |
|
BitVector res = node[0].getConst<BitVector>(); |
437 |
|
for(unsigned i = 1; i < num; ++i ) { |
438 |
|
BitVector a = node[i].getConst<BitVector>(); |
439 |
|
res = res.concat(a); |
440 |
|
} |
441 |
|
return utils::mkConst(res); |
442 |
|
} |
443 |
|
|
444 |
|
template<> inline |
445 |
61873 |
bool RewriteRule<EvalSignExtend>::applies(TNode node) { |
446 |
185387 |
return (node.getKind() == kind::BITVECTOR_SIGN_EXTEND && |
447 |
185387 |
utils::isBvConstTerm(node)); |
448 |
|
} |
449 |
|
|
450 |
|
template<> inline |
451 |
2078 |
Node RewriteRule<EvalSignExtend>::apply(TNode node) { |
452 |
2078 |
Debug("bv-rewrite") << "RewriteRule<EvalSignExtend>(" << node << ")" << std::endl; |
453 |
4156 |
BitVector a = node[0].getConst<BitVector>(); |
454 |
|
unsigned amount = |
455 |
2078 |
node.getOperator().getConst<BitVectorSignExtend>().d_signExtendAmount; |
456 |
4156 |
BitVector res = a.signExtend(amount); |
457 |
|
|
458 |
4156 |
return utils::mkConst(res); |
459 |
|
} |
460 |
|
|
461 |
|
template<> inline |
462 |
|
bool RewriteRule<EvalEquals>::applies(TNode node) { |
463 |
|
return (node.getKind() == kind::EQUAL && |
464 |
|
utils::isBvConstTerm(node)); |
465 |
|
} |
466 |
|
|
467 |
|
template<> inline |
468 |
|
Node RewriteRule<EvalEquals>::apply(TNode node) { |
469 |
|
Debug("bv-rewrite") << "RewriteRule<EvalEquals>(" << node << ")" << std::endl; |
470 |
|
BitVector a = node[0].getConst<BitVector>(); |
471 |
|
BitVector b = node[1].getConst<BitVector>(); |
472 |
|
if (a == b) { |
473 |
|
return utils::mkTrue(); |
474 |
|
} |
475 |
|
return utils::mkFalse(); |
476 |
|
|
477 |
|
} |
478 |
|
|
479 |
|
template<> inline |
480 |
317388 |
bool RewriteRule<EvalComp>::applies(TNode node) { |
481 |
952164 |
return (node.getKind() == kind::BITVECTOR_COMP && |
482 |
952164 |
utils::isBvConstTerm(node)); |
483 |
|
} |
484 |
|
|
485 |
|
template<> inline |
486 |
133001 |
Node RewriteRule<EvalComp>::apply(TNode node) { |
487 |
133001 |
Debug("bv-rewrite") << "RewriteRule<EvalComp>(" << node << ")" << std::endl; |
488 |
266002 |
BitVector a = node[0].getConst<BitVector>(); |
489 |
266002 |
BitVector b = node[1].getConst<BitVector>(); |
490 |
133001 |
if (a == b) { |
491 |
408 |
return utils::mkConst(1, 1); |
492 |
|
} |
493 |
132593 |
return utils::mkConst(1, 0); |
494 |
|
} |
495 |
|
|
496 |
|
template <> |
497 |
510 |
inline bool RewriteRule<EvalEagerAtom>::applies(TNode node) |
498 |
|
{ |
499 |
510 |
return (node.getKind() == kind::BITVECTOR_EAGER_ATOM && node[0].isConst()); |
500 |
|
} |
501 |
|
|
502 |
|
template <> |
503 |
6 |
inline Node RewriteRule<EvalEagerAtom>::apply(TNode node) |
504 |
|
{ |
505 |
6 |
Debug("bv-rewrite") << "RewriteRule<EvalComp>(" << node << ")" << std::endl; |
506 |
6 |
return node[0]; |
507 |
|
} |
508 |
|
} |
509 |
|
} |
510 |
|
} // namespace cvc5 |