From 943da5e6fb2412a63d1ea67dfeee635b0b5001f4 Mon Sep 17 00:00:00 2001
From: Pierre-Marie Pédrot
Date: Thu, 19 Jul 2018 15:05:53 +0200
Subject: Use more efficient accu check for cofix unfolding in native
 compilation.

---
 kernel/nativevalues.ml | 28 +++++++++++-----------------
 1 file changed, 11 insertions(+), 17 deletions(-)

(limited to 'kernel/nativevalues.ml')

diff --git a/kernel/nativevalues.ml b/kernel/nativevalues.ml
index 3bf23f1468..93e74af845 100644
--- a/kernel/nativevalues.ml
+++ b/kernel/nativevalues.ml
@@ -154,10 +154,6 @@ let args_of_accu (k:accumulator) =
   let acc = (get_accu k).acc_arg in
   (Obj.magic (Array.of_list acc) : t array)
 
-let is_accu x =
-  let o = Obj.repr x in
-  Obj.is_block o && Int.equal (Obj.tag o) accumulate_tag
-
 let mk_fix_accu rec_pos pos types bodies =
   mk_accu (Afix(types,bodies,rec_pos, pos))
 
@@ -172,19 +168,17 @@ let upd_cofix (cofix :t) (cofix_fun : t) =
   | _ -> assert false
   
 let force_cofix (cofix : t) = 
-  if is_accu cofix then
-    let accu = (Obj.magic cofix : accumulator) in
-    let atom = atom_of_accu accu in
-    match atom with
-    | Acofix(typ,norm,pos,f) ->
-      let args = args_of_accu accu in
-      let f = Array.fold_right (fun arg f -> f arg) args f in
-      let v = f (Obj.magic ()) in
-      set_atom_of_accu accu (Acofixe(typ,norm,pos,v));
-	v
-    | Acofixe(_,_,_,v) -> v 
-    | _ -> cofix
-  else cofix
+  let accu = (Obj.magic cofix : accumulator) in
+  let atom = atom_of_accu accu in
+  match atom with
+  | Acofix(typ,norm,pos,f) ->
+    let args = args_of_accu accu in
+    let f = Array.fold_right (fun arg f -> f arg) args f in
+    let v = f (Obj.magic ()) in
+    set_atom_of_accu accu (Acofixe(typ,norm,pos,v));
+      v
+  | Acofixe(_,_,_,v) -> v
+  | _ -> cofix
 
 let mk_const tag = Obj.magic tag
 
-- 
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