[llvm-dev] Checking when Register Allocation has been performed

[Craig Topper via llvm-dev]

Maybe
MF.getProperties().hasProperty(MachineFunctionProperties::Property::NoVRegs))?

~Craig

On Mon, Jan 15, 2018 at 12:07 PM, Martin J. O'Riordan via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi LLVM Devs,
>
>
>
> I have some shared code that performs lowering operations that can occur
> before or after register allocation.  When it is pre-RA I want to only use
> virtual registers for intermediate results, but post-RA I have to use only
> a very restricted set of physical registers.
>
>
>
> Code generation using the restricted set is not as efficient as it is when
> I can use virtual registers.  At the moment I have a clunky implementation
> for checking whether or not the register allocator has been run, and I am
> wondering if there is a “correct way” of checking whether the RA pass has
> been run?  Some part of the register info API that I have missed perhaps?
>
>
>
> Thanks,
>
>
>
>             MartinO
>
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20180115/f767e1e5/attachment.html>