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| -rw-r--r-- | clang/docs/UsersManual.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/clang/docs/UsersManual.rst b/clang/docs/UsersManual.rst index b716c0a982e..1f1b99a4bf9 100644 --- a/clang/docs/UsersManual.rst +++ b/clang/docs/UsersManual.rst @@ -1298,6 +1298,22 @@ below. If multiple flags are present, the last one is used. doesn't contain any other data (e.g. description of local variables or function parameters). +.. option:: -fstandalone-debug -fno-standalone-debug + + Clang supports a number of optimizations to reduce the size of debug + information in the binary. They work based on the assumption that + the debug type information can be spread out over multiple + compilation units. For instance, Clang will not emit type + definitions for types that are not needed by a module and could be + replaced with a forward declaration. Further, Clang will only emit + type info for a dynamic C++ class in the module that contains the + vtable for the class. + + The ``-fstandalone-debug`` option turns off these optimizations. + This is useful when working with 3rd-party libraries that don't come + with debug information. Note that Clang will never emit type + information for types that are not referenced at all by the program. + .. option:: -g Generate complete debug info. |
