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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...