From 5b2eb06816521cc0fcfe03258452560bd200002d Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Thu, 21 Sep 2023 14:00:48 -0700
Subject: Various slangpy fixes. (#3227)

* Make dynamic cast transparent through `IRAttributedType`.

* Add [CUDAXxx] variant of attributes.

* Support marshaling of vector types.

* Wrap cuda kernels in `extern "C"` block.

---------

Co-authored-by: Yong He <yhe@nvidia.com>
---
 source/slang/slang-ir-check-differentiability.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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

diff --git a/source/slang/slang-ir-check-differentiability.cpp b/source/slang/slang-ir-check-differentiability.cpp
index 8124f9210..b937fe052 100644
--- a/source/slang/slang-ir-check-differentiability.cpp
+++ b/source/slang/slang-ir-check-differentiability.cpp
@@ -471,7 +471,7 @@ public:
                 auto block = as<IRBlock>(inst->getParent());
                 if (block != funcInst->getFirstBlock())
                 {
-                    auto paramIndex = getParamIndexInBlock(as<IRParam>(inst));
+                    auto paramIndex = getParamIndexInBlock(as<IRParam, IRDynamicCastBehavior::NoUnwrap>(inst));
                     if (paramIndex != -1)
                     {
                         for (auto p : block->getPredecessors())
-- 
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