2 files changed, 13 insertions, 0 deletions
diff --git a/source/slang/slang-ir-sccp.cpp b/source/slang/slang-ir-sccp.cpp
index fc3766e63..80cee8ecb 100644
--- a/source/slang/slang-ir-sccp.cpp
+++ b/source/slang/slang-ir-sccp.cpp
@@ -676,11 +676,23 @@ struct SCCPContext
     }
     LatticeVal evalLsh(IRType* type, LatticeVal v0, LatticeVal v1)
     {
+        IntInfo info = getIntTypeInfo(type);
+        if (info.isSigned == false)
+        {
+            return evalBinaryIntImpl(
+               type, v0, v1, [](IRUnsignedIntegerValue c0, IRUnsignedIntegerValue c1) { return c0 << c1; });
+        }
         return evalBinaryIntImpl(
             type, v0, v1, [](IRIntegerValue c0, IRIntegerValue c1) { return c0 << c1; });
     }
     LatticeVal evalRsh(IRType* type, LatticeVal v0, LatticeVal v1)
     {
+        IntInfo info = getIntTypeInfo(type);
+        if (info.isSigned == false)
+        {
+            return evalBinaryIntImpl(
+               type, v0, v1, [](IRUnsignedIntegerValue c0, IRUnsignedIntegerValue c1) { return c0 >> c1; });
+        }
         return evalBinaryIntImpl(
             type, v0, v1, [](IRIntegerValue c0, IRIntegerValue c1) { return c0 >> c1; });
     }
diff --git a/source/slang/slang-ir.h b/source/slang/slang-ir.h
index eb77127c8..36e145c01 100644
--- a/source/slang/slang-ir.h
+++ b/source/slang/slang-ir.h
@@ -1059,6 +1059,7 @@ void findAllInstsBreadthFirst(IRInst* inst, List<IRInst*>& outInsts);
 // Constant Instructions
 
 typedef int64_t IRIntegerValue;
+typedef uint64_t IRUnsignedIntegerValue;
 typedef double IRFloatingPointValue;
 
 struct IRConstant : IRInst