From 1d4b5b6fd2433a10cc7ab87626cb560f54b0acbb Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Sun, 3 Sep 2023 12:56:31 -0700
Subject: Proper lowering of functiosn that returns NonCopyable values. (#3179)

* Proper lowering of functiosn that returns NonCopyable values.

* Fix tests.

* Fix clang errors.

* Fix.

* Fix clang error.

---------

Co-authored-by: Yong He <yhe@nvidia.com>
---
 source/slang/slang-parser.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'source/slang/slang-parser.cpp')

diff --git a/source/slang/slang-parser.cpp b/source/slang/slang-parser.cpp
index b270ba713..c3eba8c58 100644
--- a/source/slang/slang-parser.cpp
+++ b/source/slang/slang-parser.cpp
@@ -5299,6 +5299,13 @@ namespace Slang
         return expr;
     }
 
+    static NodeBase* parseReturnValExpr(Parser* parser, void* /*userData*/)
+    {
+        ReturnValExpr* expr = parser->astBuilder->create<ReturnValExpr>();
+        expr->scope = parser->currentScope;
+        return expr;
+    }
+
     static Expr* parseBoolLitExpr(Parser* parser, bool value)
     {
         BoolLiteralExpr* expr = parser->astBuilder->create<BoolLiteralExpr>();
@@ -7314,6 +7321,7 @@ namespace Slang
         _makeParseExpr("this",  parseThisExpr),
         _makeParseExpr("true",  parseTrueExpr),
         _makeParseExpr("false", parseFalseExpr),
+        _makeParseExpr("__return_val", parseReturnValExpr),
         _makeParseExpr("nullptr", parseNullPtrExpr),
         _makeParseExpr("none", parseNoneExpr),
         _makeParseExpr("try",     parseTryExpr),
-- 
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