[LLVMdev] A question about gcWriter

[Robert Sandra]

Hi all,

According to my understanding, gcWriter is a write barrier which will be
inserted to the source code whenever there is a write to a pointer which is
pointing to a heap address, right? My question is on which level llvm
inserts the barrier? Does llvm do it on AST, I mean insert a function call
node calling the write barrier function to the AST, or llvm does it on code
generation step?

Thanks,
Robert
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