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Hashing regs and subregs


Hi,

I am developing a new pass and looking for suggestions on the best way to record in a data structure which regs and subregs I have seen and which mode they are in through the insn chain so I know if I find duplicates.

Any suggestions on the best way to do this?
Are there any rtx hashes already implemented somewhere?

Cheers,

--
PMatos


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