Commits
Jordan Rose committed fbb8d3f9a8c
Add "interface hash" for improved incremental builds. Compute the hash of all interface tokens when parsing; write the interface hash to the swiftdeps file, or if the -dump-interface-hash option is passed to the frontend. This hash will be used in incremental mode to determine whether a file's interface has changed, and therefore whether dependent files need to be rebuilt in response to the change. Committed on ChrisW's behalf while he gets his setup unborked. rdar://problem/15352929 Swift SVN r30477