Commits
Joe Groff committed a288f160bac
SILGenPattern: Refactor clause matrix specialization to filter pattern set by each pattern. No intended functionality change yet. For now this gives a slightly better constant factor to the O(n^2) linear scan for subsumed pattern nodes. Later on, for nominal type patterns, this will also give us an opportunity to collect the properties from all the equivalent patterns into one NominalTypePattern specialization. Swift SVN r9297