[llvm-dev] LLC flags for -O3, or ideally a way to dump which are being used?

[Chad Verbowski via llvm-dev]

Hello,

I am trying to deduce the minimal LLC flags required for producing the
equivalent of llc -O3 for my code.

I was hoping there was a way to dump all the flags and their parameters for
a given llc -O3 run.

Does anyone know if there is a flag to dump these, or some other way to
know which flags llc is using?

Thanks for considering this,
-Chad
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