[LLVMdev] [LLVMDev] Live Intervals and Finding the next usage

[Jeff Kunkel]

If I had more than just the one requirement, I would use SplitAnalysis. It
provides quite a descriptive list of dependencies for the live interval.
However, since I only have the one requirement, I will retain the current
code. Although, I will use the
MachineRegisterInfo::reg_nodbg_iterator<http://llvm.org/docs/doxygen/html/classllvm_1_1MachineRegisterInfo.html#af7083a77ea4e68dd4982ae6e03b6ced0>.
I believe this is what I need.

Thanks,
Jeff Kunkel

On Thu, Jan 20, 2011 at 11:35 AM, Jakob Stoklund Olesen <stoklund at 2pi.dk>wrote:

>
> On Jan 20, 2011, at 5:37 AM, Jeff Kunkel wrote:
>
> > I have a live interval, and I would like to find out what SlotIndex the
> next use the register will occur? Is there any way to map a live interval
> back into instructions or SlotIndexes or blocks used by?
>
> Not really, you have to use the use-def chain. See
> SplitAnalysis::analyzeUses().
>
> /jakob
>
>
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