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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

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

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