[llvm-dev] Liveness of AL, AH and AX in x86 backend

[Krzysztof Parzyszek via llvm-dev]

On 5/24/2016 3:02 PM, Mehdi Amini wrote:
>
> Could you use "MIR" to forge the example you're looking for?

I have thought of that.  At the moment I'm experimenting with tracking 
subregister liveness on Hexagon.  It looks like it may be what we need, 
although it causes some testcase failures.

If the subregister liveness is not the way to go, I'll have to try MIR.

-Krzysztof


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