[lldb] Try GetTargetWP before GetSwiftASTContext (#6656) #6787
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`LookupClangType` needs the `Target` instance, and it has used `GetSwiftASTContext` to get to the target. It does not need anything directly from the ASTContext. To avoid unnecessarily loading Swift ASTContexts from `TypeSystemSwiftTypeRef`, this change tries `GetTargetWP` first, and if that succeeds, then the call to `GetSwiftASTContext` can be avoided entirely. (cherry-picked from commit 2e31fa3)
kastiglione
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LookupClangTypeneeds theTargetinstance, and it has usedGetSwiftASTContextto get to the target. It does not need anything directly from the ASTContext. To avoid unnecessarily loading Swift ASTContexts fromTypeSystemSwiftTypeRef, this change triesGetTargetWPfirst, and if that succeeds, then the call toGetSwiftASTContextcan be avoided entirely.(cherry-picked from commit 2e31fa3)