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On Fri, 16 Feb 2007, Nick Lewycky wrote: > That's surprising to me. I thought there was a pass that converts > malloc's that trivially dominate all free's and whose pointer doesn't > escape would be lowered to alloca's -- but I looked and couldn't find one. nope, there isn't one. > Why isn't there one? Because it wouldn't be profitable? Or because

...robably easily modify it to make it simpler and more conservative. Rob Robert L. Bocchino Jr. Ph.D. Student University of Illinois, Urbana-Champaign -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20070216/1c8aecdc/attachment.html>

Reid Spencer wrote: > On Wed, 2007-02-14 at 18:54 +0100, Nicola Lugato wrote: > >>I've made some other test and it looks like it don't remove even >>simple malloc/free couple. Maybe there's something wrong in the way i >>use the opt command. > > No, there's not. LLVM doesn't provide the transform you want. As Chris > mentioned, if you open a