This revision was automatically updated to reflect the committed changes. Closed by commit rG6a6f10fd23b2: [Docs] [HLSL] Add note about PCH support (authored by python3kgae).
Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D134330/new/ https://reviews.llvm.org/D134330 Files: clang/docs/HLSL/HLSLSupport.rst Index: clang/docs/HLSL/HLSLSupport.rst =================================================================== --- clang/docs/HLSL/HLSLSupport.rst +++ clang/docs/HLSL/HLSLSupport.rst @@ -89,6 +89,15 @@ ``ExternalSemaSource`` to lazily complete data types, which is a **huge** performance win for HLSL. +If precompiled headers are used when compiling HLSL, the ``ExternalSemaSource`` +will be a ``MultiplexExternalSemaSource`` which includes both the ``ASTReader`` +and ``HLSLExternalSemaSource``. For Built-in declarations that are already +completed in the serialized AST, the ``HLSLExternalSemaSource`` will reuse the +existing declarations and not introduce new declarations. If the built-in types +are not completed in the serialized AST, the ``HLSLExternalSemaSource`` will +create new declarations and connect the de-serialized decls as the previous +declaration. + CodeGen -------
Index: clang/docs/HLSL/HLSLSupport.rst =================================================================== --- clang/docs/HLSL/HLSLSupport.rst +++ clang/docs/HLSL/HLSLSupport.rst @@ -89,6 +89,15 @@ ``ExternalSemaSource`` to lazily complete data types, which is a **huge** performance win for HLSL. +If precompiled headers are used when compiling HLSL, the ``ExternalSemaSource`` +will be a ``MultiplexExternalSemaSource`` which includes both the ``ASTReader`` +and ``HLSLExternalSemaSource``. For Built-in declarations that are already +completed in the serialized AST, the ``HLSLExternalSemaSource`` will reuse the +existing declarations and not introduce new declarations. If the built-in types +are not completed in the serialized AST, the ``HLSLExternalSemaSource`` will +create new declarations and connect the de-serialized decls as the previous +declaration. + CodeGen -------
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