[PATCH] D34135: [JumpThreading] Use DT to avoid processing dead blocks

[Andrei Elovikov via Phabricator via llvm-commits]

a.elovikov added a comment.

I've just submitted https://llvm.org/PR36133 containing a testcase that show how JumpThreadings miscompiles (without crashes) the code due to DomTree not being updated between the iterations of JumpThreading itself.

I think the miscompilation is worse than a crash so it might be possible to pay the increase in compile time to avoid it. Or maybe someone has a better mitigation?


https://reviews.llvm.org/D34135