Hello! I’m working on simple jvm jit compiler based on llvm.
My backend itself does not generate any safepoints, so pointer relocation can not happen while executiong my functions. But when I call hotspot intrinsics like operator “new” it already contains a safepoint and after returning from this call, all pointers could be reallocated.
To handle this I need to tell JVM where my pointers are (stack offsets or registers) for every “new” call.
I’ve never wrote any passes that happen after register allocation, so I would really appreciate if you could tell me some ideas what llvm infrastructure could I use to do this.
P.S. I,ve already seen this page
Garbage Collection Safepoints in LLVM — LLVM 17.0.0git documentation, but I don’t think I need all that complexity with abstract machine, I want something simple. And to be honest, I really want to make it myself, just to learn more llvm 