On Wed, Nov 11, 2015 at 07:31:28PM +0100, Peter Zijlstra wrote:
Adding new intrinsic to llvm is not a big deal. I'll add it as soon as I have time to work on it or if somebody beats me to it I would be glad to test it and apply it.
This isn't a speed coding contest. You want to think about this properly.
That is, I don't think you want to go add LLVM intrinsics at all. You want to piggy back on the memory model work done by the C/C++11 people.
What you want to think about is what the memory model of your virtual machine is and how many instructions you want to expose for that.
Concurrency is a right pain, a little time and effort now will safe heaps of pain down the road.