diff options
| author | lianah <lianahady@gmail.com> | 2014-06-14 16:13:46 -0400 |
|---|---|---|
| committer | lianah <lianahady@gmail.com> | 2014-06-14 16:13:46 -0400 |
| commit | cd648c6f25a1d85abd9d677849de8af02de13d5b (patch) | |
| tree | 88bbe661530308af63ce2eae39b2f9043965e582 /src/theory/bv/theory_bv.cpp | |
| parent | 61e3aa5a2483aeb02ec76380725f842471451927 (diff) | |
more bv rewrites
Diffstat (limited to 'src/theory/bv/theory_bv.cpp')
| -rw-r--r-- | src/theory/bv/theory_bv.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/theory/bv/theory_bv.cpp b/src/theory/bv/theory_bv.cpp index 441577c9e..04b8e9d6e 100644 --- a/src/theory/bv/theory_bv.cpp +++ b/src/theory/bv/theory_bv.cpp @@ -562,6 +562,26 @@ Node TheoryBV::ppRewrite(TNode t) res = Rewriter::rewrite(result); } + if( res.getKind() == kind::EQUAL && + ((res[0].getKind() == kind::BITVECTOR_PLUS && + RewriteRule<ConcatToMult>::applies(res[1])) || + res[1].getKind() == kind::BITVECTOR_PLUS && + RewriteRule<ConcatToMult>::applies(res[0]))) { + Node mult = RewriteRule<ConcatToMult>::applies(res[0])? + RewriteRule<ConcatToMult>::run<false>(res[0]) : + RewriteRule<ConcatToMult>::run<true>(res[1]); + Node factor = mult[0]; + Node sum = RewriteRule<ConcatToMult>::applies(res[0])? res[1] : res[0]; + Node new_eq =utils::mkNode(kind::EQUAL, sum, mult); + Node rewr_eq = RewriteRule<SolveEq>::run<true>(new_eq); + if (rewr_eq[0].isVar() || rewr_eq[1].isVar()){ + res = Rewriter::rewrite(rewr_eq); + } else { + res = t; + } + } + + // if(t.getKind() == kind::EQUAL && // ((t[0].getKind() == kind::BITVECTOR_MULT && t[1].getKind() == kind::BITVECTOR_PLUS) || // (t[1].getKind() == kind::BITVECTOR_MULT && t[0].getKind() == kind::BITVECTOR_PLUS))) { |