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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130227/85631ce8/attachment.html>