From 4e2f2771eb2f8991014d957848a6a25aa49c0aaf Mon Sep 17 00:00:00 2001
From: Yong He <yhe@nvidia.com>
Date: Thu, 4 Jun 2020 12:42:17 -0700
Subject: Emit [loop] attribute to output HLSL.

---
 source/slang/slang-lower-to-ir.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'source/slang/slang-lower-to-ir.cpp')

diff --git a/source/slang/slang-lower-to-ir.cpp b/source/slang/slang-lower-to-ir.cpp
index f369729d2..030c5fc74 100644
--- a/source/slang/slang-lower-to-ir.cpp
+++ b/source/slang/slang-lower-to-ir.cpp
@@ -3281,6 +3281,10 @@ struct StmtLoweringVisitor : StmtVisitor<StmtLoweringVisitor>
         {
             getBuilder()->addLoopControlDecoration(inst, kIRLoopControl_Unroll);
         }
+        else if( stmt->findModifier<LoopAttribute>() )
+        {
+            getBuilder()->addLoopControlDecoration(inst, kIRLoopControl_Loop);
+        }
         // TODO: handle other cases here
     }
 
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