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Hi Susan, > But this doesn't seem to be happening; the stores to memory are there but > the loads are not. > > Any ideas what's going wrong? Are you using VirtRegMap::addSpillPoint and VirtRegMap::addRestorePoint ? If not you may need to add calls to them to let the rewriter know where to insert the loads/stores. > If not, any advice on how to generate the loads myself?? The TargetInstrInfo class has methods storeRegToStackSlot and loadRegFromStackSlot, however I'd...

...r message saying that I'm trying to assign a physical register to a virtual register that's already been mapped. If I don't call assignVirt2Phys then I get an abort with an error message saying that some virtual register was not assigned a physical register. I've tried calling addSpillPoint and addRestorePoint for every instruction that involves a virtual register, and also not calling those functions, and I still get the same aborts. I would very much appreciate any help! Susan Horwitz

I found the problem! My generated code is spilling correctly but is not reloading at all. For example, if the original code has the equivalent of this (where %1024 is a virtual reg): %1024 = xxx ... yyy = %1024 and I find no physical register for %1024, then I assign it to physical register %edi and to a stackslot. That creates code like this: %edi = xxx store from %edi to the