[Coverage] Emit deferred regions in headers
There are some limitations with emitting regions in macro expansions
because we don't gather file IDs within the expansions. Fix the check
that prevents us from emitting deferred regions in expansions to make an
exception for headers, which is something we can handle.
rdar://35373009
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@317760 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 559824626977ee1736558af190d9afa6010c1768)
3 files changed
