[LLVMdev] Performance impact of different optimization passes

[John Regehr]

> I was wondering if there is a paper or a technical report that documents the performance impact
> of the different optimizations passes on a some set of benchmarks. Is something like this
> available ?

A lot of reserach has been done on this generic topic, a search like this 
will get you some of it and you can no doubt find the rest by following 
references:

https://www.google.com/search?q=llvm+%22phase+ordering%22+filetype:pdf

John