From 99cb8f909ad25bcfa674216f5140b6cf1e72aeca Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Tue, 15 Jul 2014 11:52:26 +0000
Subject: [PATCH] Disable CSE.

This disables the common subexpression elimination (CSE) optimization.

This is broken on aarch64:
http://caml.inria.fr/mantis/view.php?id=6486
---
 asmcomp/CSEgen.ml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/asmcomp/CSEgen.ml b/asmcomp/CSEgen.ml
index 19019e1..260e4fa 100644
--- a/asmcomp/CSEgen.ml
+++ b/asmcomp/CSEgen.ml
@@ -180,7 +180,8 @@ method private keep_checkbounds n =
 (* Perform CSE on the given instruction [i] and its successors.
    [n] is the value numbering current at the beginning of [i]. *)
 
-method private cse n i =
+method private cse n i = i
+(*
   match i.desc with
   | Iend | Ireturn | Iop(Itailcall_ind) | Iop(Itailcall_imm _)
   | Iexit _ | Iraise _ ->
@@ -262,6 +263,7 @@ method private cse n i =
       {i with desc = Itrywith(self#cse n body,
                               self#cse empty_numbering handler);
               next = self#cse empty_numbering i.next}
+*)
 
 method fundecl f =
   {f with fun_body = self#cse empty_numbering f.fun_body}
-- 
2.0.1