From 4bd3e6e02324f913e8927fe69d32c0aafe9fc831 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Mon, 22 Aug 2022 14:17:56 -0700
Subject: Make Optional<PointerType> lower to PointerType instead of a struct.
 (#2373)

---
 source/slang/slang-ir-util.cpp | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

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

diff --git a/source/slang/slang-ir-util.cpp b/source/slang/slang-ir-util.cpp
index d91252fcc..7775fdb91 100644
--- a/source/slang/slang-ir-util.cpp
+++ b/source/slang/slang-ir-util.cpp
@@ -1,4 +1,5 @@
 #include "slang-ir-util.h"
+#include "slang-ir-insts.h"
 
 namespace Slang
 {
@@ -43,4 +44,24 @@ bool isPtrToArrayType(IRInst* type)
     return isPointerOfType(type, kIROp_ArrayType) || isPointerOfType(type, kIROp_UnsizedArrayType);
 }
 
+
+bool isComInterfaceType(IRType* type)
+{
+    if (!type) return false;
+    if (type->findDecoration<IRComInterfaceDecoration>() ||
+        type->getOp() == kIROp_ComPtrType)
+    {
+        return true;
+    }
+
+    if (auto ptrType = as<IRNativePtrType>(type))
+    {
+        auto valueType = ptrType->getValueType();
+        return valueType->findDecoration<IRComInterfaceDecoration>() != nullptr;
+    }
+
+    return false;
+}
+
+
 }
-- 
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