[llvm-dev] Scheduling defs and uses close in PreRA

[Alexey Zhikhartsev via llvm-dev]

Hi everyone,



Here, Florian Hahn talks about PreRA instruction scheduling:
https://youtu.be/brpomKUynEA?t=582



Florian mentions that one of its main goals is to schedule defs and uses
closer together to shorten live ranges and decrease the chance of spills.
My question is: where is the code that specifically implements this logic
of putting defs and their corresponding uses closer together? I was
expecting to find relevant code in MachineScheduler.cpp GenericScheduler
but couldn't. Any pointers would be appreciated.



Best,

Alex
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