Commits
Joe Groff committed 4fdc20f7398
Allow '<pattern> as T' checked patterns with subpattern bindings. Allow a form of 'case is T' that matches the cast result to a subpattern, 'case <pattern> as T'. This exposes an issue in switch destructuring with casting into complex class hierarchies <rdar://problem/16401831> but works for common cases. Swift SVN r15396