aqjune added a comment. Herald added a subscriber: lxfind. Hello all, Is there a plan to enable `-enable-noundef-analysis` by default? It seems this patch is already addressing a lot of test cases. Another good news is that DeadArgElim is also fixed by D98899 <https://reviews.llvm.org/D98899> to correctly drop UB-raising attributes such as noundef when replacing an unused argument with undef. This was an issue which is known to be problematic when the flag was activated. I can make a patch based on this work instead if people want.
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