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2015 Apr 24
2
[LLVMdev] RFC: implicit null checks in llvm
I don't think we can expose the memory operations directly from a semantic, theoretical point of view. Whether practically we can do this or not is a different question. Does LLVM do optimizations like these at the machine instruction level? if (condition) T = *X // normal load, condition guards against null EH_LABEL // clobbers all U = *X // implicit null check, branches