From 1c9b33157322751c456bf7abbd386edccf4413c3 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Sat, 14 Jan 2023 22:50:57 -0800
Subject: Support custom backward derivative attribute. (#2594)

---
 source/slang/slang-ir-util.cpp | 2 ++
 1 file changed, 2 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 73d8865ed..fb465f638 100644
--- a/source/slang/slang-ir-util.cpp
+++ b/source/slang/slang-ir-util.cpp
@@ -1,6 +1,7 @@
 #include "slang-ir-util.h"
 #include "slang-ir-insts.h"
 #include "slang-ir-clone.h"
+#include "slang-ir-dce.h"
 
 namespace Slang
 {
@@ -198,6 +199,7 @@ IRInst* hoistValueFromGeneric(IRBuilder& inBuilder, IRInst* value, IRInst*& outS
         value->replaceUsesWith(outSpecializedVal);
         value->removeAndDeallocate();
     }
+    eliminateDeadCode(newGeneric);
     return newGeneric;
 }
 
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