tree da1ccbe9356081537c4fddd2eb2bd10b7be0b964
parent f8181b52607df16833f7cb89b6e4271732cc52f6
author Zuyu Zhang <zuyuz@apache.org> 1495403348 -0700
committer Zuyu Zhang <zuyuz@apache.org> 1496367849 -0700

Simplified ExtractCommonSubexpression rule as a BottomUp rule.