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port simplifications on bv2int

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-08-28 02:55:50 -07:00
parent 03f263b974
commit 9e4b2a6795
2 changed files with 82 additions and 2 deletions
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5
src/ast/rewriter/bv_rewriter.h
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@ -42,6 +42,7 @@ protected:
decl_kind mul_decl_kind() const { return OP_BMUL; }
bool use_power() const { return false; }
decl_kind power_decl_kind() const { UNREACHABLE(); return static_cast<decl_kind>(UINT_MAX); }
public:
bv_rewriter_core(ast_manager & m):m_util(m) {}
};
@ -108,6 +109,10 @@ class bv_rewriter : public poly_rewriter<bv_rewriter_core> {
br_status mk_bv_ashr(expr * arg1, expr * arg2, expr_ref & result);
bool is_minus_one_core(expr * arg) const;
bool is_x_minus_one(expr * arg, expr * & x);
bool is_add_no_overflow(expr* e);
bool is_mul_no_overflow(expr* e);
unsigned num_leading_zero_bits(expr* e);
br_status mk_bv_sdiv_core(expr * arg1, expr * arg2, bool hi_div0, expr_ref & result);
br_status mk_bv_udiv_core(expr * arg1, expr * arg2, bool hi_div0, expr_ref & result);
br_status mk_bv_srem_core(expr * arg1, expr * arg2, bool hi_div0, expr_ref & result);