new simplifier/tactic

eliminate_predicates finds macros and eliminates predicates from formulas as pre-processing.

src/tactic/core/CMakeLists.txt

@@ -38,6 +38,7 @@ z3_add_component(core_tactics
     elim_term_ite_tactic.h
     elim_uncnstr_tactic.h
     elim_uncnstr2_tactic.h
+    eliminate_predicates_tactic.h
     euf_completion_tactic.h
     injectivity_tactic.h
     nnf_tactic.h

src/tactic/core/eliminate_predicates_tactic.h

@@ -0,0 +1,40 @@
+/*++
+Copyright (c) 2022 Microsoft Corporation
+
+Module Name:
+
+    eliminate_predicates_tactic.h
+
+Abstract:
+
+    Tactic for eliminating macros and predicates
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2022-10-30
+
+--*/
+#pragma once
+
+#include "util/params.h"
+#include "tactic/tactic.h"
+#include "tactic/dependent_expr_state_tactic.h"
+#include "ast/simplifiers/eliminate_predicates.h"
+
+
+class eliminate_predicates_tactic_factory : public dependent_expr_simplifier_factory {
+public:
+    dependent_expr_simplifier* mk(ast_manager& m, params_ref const& p, dependent_expr_state& s) override {
+        return alloc(eliminate_predicates, m, s);
+    }
+};
+
+inline tactic * mk_eliminate_predicates_tactic(ast_manager& m, params_ref const& p = params_ref()) {
+    return alloc(dependent_expr_state_tactic, m, p, alloc(eliminate_predicates_tactic_factory), "elim-predicates");
+}
+
+/*
+  ADD_TACTIC("elim-predicates", "eliminate predicates.", "mk_eliminate_predicates_tactic(m, p)")
+*/
+
+