Summary:
Also, made a few minor tweaks to shave off a little more cumulative memory consumption:
* All rules share a single NewMIs instead of constructing their own. Only one
will end up using it.
* Use MIs.resize(1) instead of MIs.clear();MIs.push_back(I) and prevent
GIM_RecordInsn from changing MIs[0].
Depends on D33764
Reviewers: rovka, vitalybuka, ab, t.p.northover, qcolombet, aditya_nandakumar
Reviewed By: ab
Subscribers: kristof.beyls, igorb, llvm-commits
Differential Revision: https://reviews.llvm.org/D33766
llvm-svn: 307159
