[PATCH] D119760: [DSE] Fall back to CFG scan for unreachable terminators.

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

Please rebase over https://github.com/llvm/llvm-project/commit/2460a2ce47873109e9b300f65e1bd2f4c4b86bfb.



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Comment at: llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp:813
+
+    AnyUnreachableExit = !PDT.getRootNode()->getBlock() &&
+                         any_of(PDT.roots(), [](const BasicBlock *E) {
----------------
The first check here looks redundant. Doesn't PDT always have virtual root?


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https://reviews.llvm.org/D119760