search for: physregusedeflists

On Aug 6, 2009, at 5:45 AM, Artjom Kochtchi wrote: > So I was searching for a possibility to include an additional > (Machine)BasicBlock (or rather a MachineFunction?) somewhere in the > program > that contains the program termination and that I can jump to on check > failure. Can't I do that during a Pass in llc? If you just have a magic block of instructions you want to

hi I find machine register info carrying the lists of def use for each register - PhysRegUseDefLists[RegNo];. I dont see a lot of places using this. For instance, if this list is accurate, can this be used for def use relationships at different points? thanks shrey

Kenneth Uildriks wrote: > > Does the error function *have* to be auto-generated in your pass? > Perhaps the original code should use invokes, and your pass insert the > error check with a jne to the "unwind" block. > If I understand correctly, unwind is some kind of exception handling in LLVM IR? I'm not sure if this is the right thing. First, I include runtime

Hi again, After further investigation, I've found that the private PhysRegUseDefLists array ("head of use/def list for physical register") from MachineRegisterInfo class seems to be empty. But I didn't found any methods for updating such data structure. How/where this "use/def list" should be managed ? Is the documentation https://llvm.org/docs/CodeGenerator...

Hi, In the context of MachineCode custom inserter, I'm trying to enforce the mapping of virtual register to a physical one. According to the documentation https://llvm.org/docs/CodeGenerator.html#mapping-virtual-registers-to-physical-registers There are two ways: the direct one and the indirect ones. The indirect ones refer VirtRegMap class that I've never found. So I tried the direct