From dfff69ef604e02703575cb1cb15b2f77eda5f0f4 Mon Sep 17 00:00:00 2001
From: Frédéric Besson
Date: Thu, 28 Mar 2019 15:24:33 +0100
Subject: Re-implementation of zify

The logic is implemented in OCaml. By induction over the terms,
guided by registered Coq terms in ZifyInst.v, it generates a rewriting
lemma. The rewriting is only performed if there is some progress.  If
the rewriting fails (due to dependencies), a novel hypothesis is
generated.

This PR fixes #5155, fixes #8898, fixes #7886, fixes #10707, fixes #9848
ans fixes #10755.

The zify plugin is placed in the micromega directory.
(Though the reason is unclear, having it in a separate directory is
bad for efficiency.)  efficiency impact.

There are also a few improvements of lia/lra that are piggybacked.
- more aggressive pruning of useless hypotheses
- slightly optimised conjunctive normal form
- applies exfalso if conclusion is not in Prop
- removal of Timeout in test-suite
---
 plugins/micromega/persistent_cache.mli | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'plugins/micromega/persistent_cache.mli')

diff --git a/plugins/micromega/persistent_cache.mli b/plugins/micromega/persistent_cache.mli
index 4248407221..cb14d73972 100644
--- a/plugins/micromega/persistent_cache.mli
+++ b/plugins/micromega/persistent_cache.mli
@@ -32,6 +32,10 @@ module type PHashtable =
       (** [memo cache f] returns a memo function for [f] using file [cache] as persistent table.
           Note that the cache will only be loaded when the function is used for the first time *)
 
+    val memo_cond : string -> (key -> bool) -> (key -> 'a) -> (key -> 'a)
+      (** [memo cache cond f] only use the cache if [cond k] holds for the key [k].  *)
+
+
   end
 
 module PHashtable(Key:HashedType) : PHashtable with type key = Key.t
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