[LLVMdev] slot-indexes, liveranges...

Jonas Paulsson jnspaulsson at hotmail.com
Thu Nov 4 10:41:00 PDT 2010


I am having a bit of a time trying to figure out the scheme behind the slotindexing / liverange design.

There seems to be several indexes mapped to the same instruction. Why is this?

I take it, that it will always be true that for a LiveRange includes instructions with slotindexes [i:j), based on calls to SlotIndexes::getInstructionIndex(MI) ?

However, LiveRange.valno->def, gives an earlier index than what is returned from the method above...

Is there any overview doc on this?

Best regards,


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