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17201
2017 Dec 19
4
Register Allocation Graph Coloring algorithm and Others
Hi Matthias,
Thanks for your hint!
It is just for learning and practicing for me, just like migrate
DragonEgg
http://lists.llvm.org/pipermail/llvm-dev/2017-September/117201.html the
motivating is for learning from GCC and LLVM developers.
在 2017年12月19日 10:07, Matthias Braun 写道:
>
>
>> On Dec 18, 2017, at 9:52 AM, Leslie Zhai via llvm-dev
>> <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
>>
>> Hi Da...
2017 Dec 15
8
Register Allocation Graph Coloring algorithm and Others
Hi GCC and LLVM developers,
I am learning Register Allocation algorithms and I am clear that:
* Unlimited VirtReg (pseudo) -> limited or fixed or alias[1] PhysReg (hard)
* Memory (20 - 100 cycles) is expensive than Register (1 cycle), but it
has to spill code when PhysReg is unavailable
* Folding spill code into instructions, handling register coallescing,
splitting live ranges, doing