search for: use_old_passmanager

Hi All, I have enabled new pass manager. At this point, it is a replacement for current pass manager without adding any new features. If you run into any issues then let me know. Meanwhile to re-enable old pass manager, just uncomment #define USE_OLD_PASSMANAGER in include/llvm/Pass.h If the new pass manager does not cause any regression then I will start removing old manager after few days. Thanks, - Devang