Hello, By investigating the source code of gollvm and attempting to fix some bugs in GoStatepoints.cpp, I have some questions about the current GC implementation: 1. Can an object pointer live in a callee-saved register and live through a call, recorded in the corresponding stackmap? Since gollvm uses the sysv64ABI for amd64, I think the current implementation seems to ignore this register part. In "emitCallsiteEntries" it only emits the pointer map of the current stack. 2. When GC is triggered, during the unwinding process, the "scanstackwithmap_callback" should also test the regmap and mark the pointers that live in the registers 3. How to deal with the C stacks of the C runtime functions? Currently we don't have stackmaps generated for them.
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