[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The question is, does "not tracking liveness" mean this info is invalid / out-of-date ???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 ?
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