Hi, the attached patch changes the 'Interval' class so that it's possible to build hierarchy of intervals, with first-order intervals composed of basic blocks, second-order interface composed of first-order intervals and so on. The paper I read on intervals specifically talks about interval hierarchy, and I indeed exploit hierarchy in some algorithm of mine. The patch is pretty large, so there might be some bugs, but on the other the interval class is not used anywhere in LLVM, as far as I know. Comments? - Volodya -------------- next part -------------- A non-text attachment was scrubbed... Name: Intervals.diff Type: text/x-diff Size: 33881 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20060530/eebd2170/attachment.diff>