First cut at OS detection, taking advantage of the new generic targets.
This approach allows adding OS-specific targets/defines/etc. without
completely breaking unknown subtargets. No new subtargets yet, although
I plan to add x86-Linux soon. Others can add targets that they use as
needed; adding a new subtarget takes very little code.
Also does some fixups for description strings; a lot of them were
unspecified. I think all the ones I added are correct, but
they're unverified; corrections are welcome.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55091 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed