1 Commits

Author	SHA1	Message	Date
Dan Gohman	b1528d73d1	Re-apply r84295, with fixes to how the loop "top" and "bottom" blocks are ... tracked. Instead of trying to manually keep track of these locations while doing complex modifications, just recompute them when they're needed. This fixes a bug in which the TopMBB and BotMBB were not correctly updated, leading to invalid transformations. llvm-svn: 84598	2009-10-20 04:50:37 +00:00