From 1fced8b109eb74b03adc232ca6057c2235505049 Mon Sep 17 00:00:00 2001
From: Daniel Murphy <yebblies@gmail.com>
Date: Fri, 25 Jul 2014 04:34:16 +1000
Subject: [PATCH] Fix Issue 13023 - optimizer produces wrong code for
 comparision and division of ulon

---
 src/backend/cod3.c    |  2 ++
 test/runnable/mars1.d | 15 +++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/src/backend/cod3.c b/src/backend/cod3.c
index be53bdc884db..0a9b3cbd8a2c 100644
--- a/src/backend/cod3.c
+++ b/src/backend/cod3.c
@@ -2213,6 +2213,8 @@ code* gen_testcse(code *c, unsigned sz, targ_uns i)
                 FLcs,i, FLconst,(targ_uns) 0);
     if ((I64 || I32) && sz == 2)
         c->Iflags |= CFopsize;
+    if (I64 && sz == 8)
+        code_orrex(c, REX_W);
     return c;
 }
 
diff --git a/test/runnable/mars1.d b/test/runnable/mars1.d
index f50563c1e407..abcb07fdd706 100644
--- a/test/runnable/mars1.d
+++ b/test/runnable/mars1.d
@@ -218,6 +218,20 @@ void testarrayinit()
 
 ///////////////////////
 
+void test13023(ulong n)
+{
+    static void func(bool b) {}
+
+    ulong k = 0;
+
+    func(k >= n / 2);
+
+    if (k >= n / 2)
+        assert(0);
+}
+
+///////////////////////
+
 struct U { int a; union { char c; int d; } long b; }
 
 U f = { b:3, d:2, a:1 };
@@ -1200,6 +1214,7 @@ int main()
     test10715();
     test10678();
     test7565();
+    test13023(0x10_0000_0000);
     test12833();
     test9449();
     test12057();