efriedma-quic wrote: > > Note that changing the memory accesses performed by clang (load or store) > > _is_ an ABI change at IR level because of UB. > > Could you clarify why UB is a consideration here?
There's some weirdness with poison values; see https://reviews.llvm.org/D129541 etc. This is mostly an IR modeling thing; the machine instructions work fine, we just need to make sure we don't accidentally poison IR values that aren't supposed to be poison. https://github.com/llvm/llvm-project/pull/65742 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
