Leslie Zhai writes:
> But I like to practice and learn :)
> https://github.com/xiangzhai/llvm/blob/avr/lib/CodeGen/RegAllocGraphColoring.cpp#L327because
> theory is not always correct, or misunderstood by people, so I
> want to compare solutionByHEA, IRA, Greedy, PBQP and other algorithms.
That
Leslie Zhai writes:
> * Memory (20 - 100 cycles) is expensive than Register (1 cycle), but
> it has to spill code when PhysReg is unavailable
As Vladimir said, the cache makes this kind of analysis much more
tricky. It's not necessarily the case that memory=bad and
register=good. Since there a
