tree 9d7615eeabda69cb2318b50f8d14d80af4ebfad1
parent 2f284948af29a8333f14811a9458d420529980a8
author Ken Thompson <ken@golang.org> 1241498926 -0700
committer Ken Thompson <ken@golang.org> 1241498926 -0700
golang-hg b63ceda62601e4997262e8fc489e7ac433e547f5

more code optimization
1. dont clear external and heap objects
2. propagate constant assignment

R=r
OCL=28254
CL=28254