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Hi, Sanjoy, On 2015-11-16 23:27, Sanjoy Das wrote: > Hi Vlad, > > vlad via llvm-dev wrote: >>> Vlad, >>> >>> My initial impression is that you've stumbled across a bug. I suspect >>> that we - the only active users of the deopt info in the statepoint I >>> know of - have been inverting the meaning of Direct and Indirect >>>

...d and write barriers -- these are small bits of code that run when reading and writing GC references (distinct from memory reordering barriers). For more details on GC specific stuff, I suggest referring to http://www.memorymanagement.org/ and our 2014 LLVM-Dev talk http://llvm.org/devmtg/2014-10/#talk4. Getting LLVM ToT working with a precise relocating GC involves taking the following steps: Note: GCREF is the type representing a pointer that the GC needs to know about and potentially relocate. Currently it is `<Ty> addrspace(1)*`. 1. Generate IR, and represent GC poin...