From 004f6e30b5df3a3df2c26fe5c4a5e78c49f71166 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Wed, 9 Nov 2022 19:19:17 -0800
Subject: Add `[ForwardDerivativeOf]` attribute. (#2501)

* Add [ForwardDerivativeOf] attribute.

* Fix handling around phi nodes.

* Fixes.

* Remove IR opcode for ForwardDerivativeOfDecoration.

Co-authored-by: Yong He <yhe@nvidia.com>
---
 source/slang/slang-ast-type.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'source/slang/slang-ast-type.cpp')

diff --git a/source/slang/slang-ast-type.cpp b/source/slang/slang-ast-type.cpp
index a869c95a7..ba033c3ad 100644
--- a/source/slang/slang-ast-type.cpp
+++ b/source/slang/slang-ast-type.cpp
@@ -473,6 +473,11 @@ Type* NamespaceType::_createCanonicalTypeOverride()
     return this;
 }
 
+Type* DifferentialPairType::getPrimalType()
+{
+    return as<Type>(findInnerMostGenericSubstitution(declRef.substitutions)->getArgs()[0]);
+}
+
 
 // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! PtrTypeBase !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
-- 
cgit v1.2.3