search for: mark_gcroot

...nly pointers, but also tagged unions and compressed pointers. Other ideas involved changes to the type system. To support GC roots of any type without changing the type system, a new instruction needs to be introduced. It could be used like this: %gcvar = call %gctype* @allocate_type() mark_gcroot %gctype* %gcvar For a proof-of-concept, which only supports pointers as GC roots, an intrinsic is enough: %gcvar = call %gctype* @allocate_type() %tmp = bitcast %gctype* %gcvar to i8* call void @gcroot.mark(i8* %tmp) What part of the garbage collector needs support from the code g...