From b6b2426181e587252dabe7098f7ce1a442fdf8c2 Mon Sep 17 00:00:00 2001
From: Michael Holman <michhol@microsoft.com>
Date: Fri, 20 Apr 2018 14:46:11 -0700
Subject: [PATCH] don't update write barrier card table for wasm stores

---
 lib/Backend/Lower.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Backend/Lower.cpp b/lib/Backend/Lower.cpp
index 64aaec3ca6c..e09754158de 100644
--- a/lib/Backend/Lower.cpp
+++ b/lib/Backend/Lower.cpp
@@ -9205,7 +9205,8 @@ Lowerer::LowerStArrViewElem(IR::Instr * instr)
             instr->FreeSrc2();
         }
     }
-    InsertMove(dst, src1, done);
+    // wasm memory buffer is not recycler allocated, so we shouldn't generate write barrier 
+    InsertMove(dst, src1, done, false);
 
     instr->Remove();
     return instrPrev;