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2010 Aug 08
1
[LLVMdev] Suspicious code in backend scheduler
Hello, Still trying to write a custom scheduler, I stumbled accross a highly suspicious code in all schedulers. In both ScheduleDAGFast.cpp and ScheduleDAGRRList.cpp, one can find this piece of code: SUnit *CopyFromSU = CreateNewSUnit(NULL); and then in the same files: SUnit *CreateNewSUnit(SDNode *N) { [...] SUnit *NewNode = NewSUnit(N); And finally in ScheduleDAGSDNodes.cpp: SUnit *ScheduleDAGSDNodes::NewSUnit(SDNode *N) { [...] if (N->isMachineOpcode() && [...] So basically, it mea...