Make ArrayExpressionType a DeclRefType and define its autodiff extension in stdlib. (#2615)

* Allow array parameters in forward diff.

* Use type canonicalization instead of coersion.

* Reimplement array type.

* Fix.

* Update test case.

---------

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/source/slang/slang-check-stmt.cpp b/source/slang/slang-check-stmt.cpp
index 0f450340f..8049c1230 100644
--- a/source/slang/slang-check-stmt.cpp
+++ b/source/slang/slang-check-stmt.cpp
@@ -206,8 +206,7 @@ namespace Slang
         }
         else
         {
-            ConstantIntVal* rangeBeginConst = m_astBuilder->getOrCreate<ConstantIntVal>();
-            rangeBeginConst->value = 0;
+            ConstantIntVal* rangeBeginConst = m_astBuilder->getIntVal(m_astBuilder->getIntType(), 0);
             rangeBeginVal = rangeBeginConst;
         }