dmajor added a comment. Here is a reduced-ish repro, I can keep poking at it but maybe this is sufficient for you to notice something: https://godbolt.org/z/endf6d.
Center pane is old DSE, right pane is new DSE. I highlighted the problem area with a nop at line 56 of the source, and line 59 of each disassembly. The array writes following the nop have been eliminated, even though they will be needed on a future iteration of the for loop. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D87163/new/ https://reviews.llvm.org/D87163 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
