52 Commits

Author	SHA1	Message	Date
Chris Lattner	f2cc841619	Fix a bug: this does not preserve the CFG! ... While we're at it, add support for updating loop information correctly. llvm-svn: 13033	2004-04-18 05:38:37 +00:00
Chris Lattner	946b255977	Initial checkin of a simple loop unroller. This pass is extremely basic and ... limited. Even in it's extremely simple state (it can only *fully* unroll single basic block loops that execute a constant number of times), it already helps improve performance a LOT on some benchmarks, particularly with the native code generators. llvm-svn: 13028	2004-04-18 05:20:17 +00:00