From 20262684bcbb707d16669b2670039df870b65ca8 Mon Sep 17 00:00:00 2001
From: jsmall-nvidia <jsmall@nvidia.com>
Date: Tue, 10 Jan 2023 17:01:24 -0500
Subject: Small fixes around repro loading/autodiff (#2585)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Work around for some issue seen with a repro.

* Small improvement in doing IDifferentable check.
---
 source/slang/slang-ir-autodiff.cpp | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

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

diff --git a/source/slang/slang-ir-autodiff.cpp b/source/slang/slang-ir-autodiff.cpp
index 53e2ed0be..94417ea00 100644
--- a/source/slang/slang-ir-autodiff.cpp
+++ b/source/slang/slang-ir-autodiff.cpp
@@ -309,10 +309,15 @@ IRInst* AutoDiffSharedContext::findDifferentiableInterface()
             // TODO: This seems like a particularly dangerous way to look for an interface.
             // See if we can lower IDifferentiable to a separate IR inst.
             //
-            if (globalInst->getOp() == kIROp_InterfaceType &&
-                as<IRInterfaceType>(globalInst)->findDecoration<IRNameHintDecoration>()->getName() == "IDifferentiable")
+            if (auto intf = as<IRInterfaceType>(globalInst))
             {
-                return globalInst;
+                if (auto decor = intf->findDecoration<IRNameHintDecoration>())
+                {
+                    if (decor->getName() == toSlice("IDifferentiable"))
+                    {
+                        return globalInst;
+                    }
+                }
             }
         }
     }
-- 
cgit v1.2.3