Extracting live registers

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Extracting live registers

Paulo Matos-3

I remember from awhile ago that there's some option (or there was...)
that gets GCC to print some register allocation information together
with the assembler output.

I am interested in obtaining the live registers per basic block. I think
the option I had in mind did that but I can't remember the option name
anymore. Can someone point me out to the option or a way to extract such

Kind regards,

Paulo Matos