[llvm-dev] Post SSA, not tracking liveness

Lawrence, Peter via llvm-dev llvm-dev at lists.llvm.org
Mon May 16 13:26:12 PDT 2016

With   "-print-machineinstrs"  I'm seeing this message

# Machine code for function main: Post SSA, not tracking liveness"

But I see "<kill>", and "<dead>",   info in the printout,
The question is,  does "not tracking liveness" mean this info is invalid / out-of-date ???
If so, what do I do to ensure that it is valid ???
I ask because I'm writing a post-RA  MachineFunctionPass that requires this info.

Or to put it another way,
If the info is invalid why are we printing it out ?
Otherwise if the info is valid what does "not tracking liveness" mean ?

--Peter Lawrence.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160516/37a3570a/attachment.html>

More information about the llvm-dev mailing list