Make `-no-mangle` option work, add `-no-hlsl-binding`. (#3817)

1 files changed, 7 insertions, 1 deletions

diff --git a/source/slang/slang-check-decl.cpp b/source/slang/slang-check-decl.cpp
index 093e2599f..c117dbc14 100644
--- a/source/slang/slang-check-decl.cpp
+++ b/source/slang/slang-check-decl.cpp
@@ -1772,7 +1772,13 @@ namespace Slang
                 parentAggTypeDecl->unionTagsWith(getTypeTags(varDeclRefType));
             }
         }
-
+        if (getOptionSet().getBoolOption(CompilerOptionName::NoMangle) &&
+            isGlobalDecl(varDecl))
+        {
+            // If -no-mangle option is set, we will add `ExternCpp` modifier to all
+            // global variables and struct fields to prevent mangling.
+            addModifier(varDecl, m_astBuilder->create<ExternCppModifier>());
+        }
         checkVisibility(varDecl);
     }