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Hi, How can I reserve an ARM register for only a part of the code? Example: lets say I have 3 functions, A(), B() and C(). I want to prohibit compiler from using a register (lets say X9 in ARM 64) in function C() only. I think that by AArch64RegisterInfo::getReservedRegs function, a register can be reserved for the whole program. But, I need to reserve for only part of the code. Can I

...in llvm? Thanks Nisal On Mon, Jun 12, 2017 at 9:54 PM, Tim Northover <t.p.northover at gmail.com> wrote: > Hi Nisal, > > (Adding llvm-dev back again; best to keep these things public in case > they help someone else in the future). > > On 12 June 2017 at 19:43, Nisal Menuka <nisalmenuka23 at gmail.com> wrote: >> I am a first year graduate student at Rice University, I'm looking to >> reserve registers X9 and X10 for one of my research projects. I have >> some questions regarding this and greatly appreciate any help you can >> provide...

Hi, I'm trying to understand how virtual regs are assigned to operands in IR instructions. I looked into SelectionDAG but could not figure out where the assignment happens. How and where does this conversion happen? Furthermore, I want to build a map between variable and the virtual register (x corresponds to vreg11 in below code). I've been stuck here for a while. Any help is greatly