This adds -fdata-sections, -ffunction-sections, and their negations to
the list of -f options accepted by clang-cl. As a result, these
options can be used with the same spelling for both clang and
Ok, thanks for clarifying.
The benefit this would get us is not having to spell the flags differently depending on whether the frontend is clang or clang-cl. I figured this would fit in with all the -f options we already take and not really increase the risk of conflicting with future cl.exe options. But as you said, there are clang-cl options that will enable the exact same functionality, so I'll abandon this.