Steven Wu a6c560b949 [Modules] Make SubInstance spawn correctly under DirectCC1Mode ...

Make sure ClangExtraArgs are inherited in the subinstance for module
lookup/building when direct cc1 mode is used. This is useful for lldb,
which does a slight different variant of the explicit module build
that do not have swift-driver cooridination and replies on the
subInstance to load swiftmodule. When such configuration is used, if
DirectCC1 compile option is inherited without any extra cc1 arguments,
the clang importer inside the sub-instance is actually malformed,
causing the swift instance failed to be created.

rdar://135611011

2024-09-10 16:47:48 -07:00

119 KiB

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