From b7d318f48db2cb83a41d665f1727ae93fc555124 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Thu, 28 Sep 2023 18:07:40 -0700
Subject: Support `constref` parameters passing. (#3249)

* Support `constref` parameters passing.

* Fix.

* Fix.

* Add test and diagnostic on mix use of __constref and no_diff.

* check for [constref] on differentiable member method.

---------

Co-authored-by: Yong He <yhe@nvidia.com>
---
 source/slang/slang-emit-cpp.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'source/slang/slang-emit-cpp.cpp')

diff --git a/source/slang/slang-emit-cpp.cpp b/source/slang/slang-emit-cpp.cpp
index 81bc2203a..ebe5965f4 100644
--- a/source/slang/slang-emit-cpp.cpp
+++ b/source/slang/slang-emit-cpp.cpp
@@ -403,8 +403,9 @@ void CPPSourceEmitter::useType(IRType* type)
             break;
         }
         case kIROp_RefType:
+        case kIROp_ConstRefType:
         {
-            type = static_cast<IRRefType*>(type)->getValueType();
+            type = static_cast<IRPtrTypeBase*>(type)->getValueType();
             break;
         }
         default: break;
@@ -1039,6 +1040,7 @@ void CPPSourceEmitter::_emitType(IRType* type, DeclaratorInfo* declarator)
         }
         break;
     case kIROp_RefType:
+    case kIROp_ConstRefType:
         {
             auto ptrType = cast<IRPtrTypeBase>(type);
             PtrDeclaratorInfo refDeclarator(declarator);
-- 
cgit v1.2.3