[PATCH] D109428: [SImplifyCFG] SwitchInst processing redirecting the UB edges from the BB with the phiNode, that contains the UB, to the new BB.

[Max Kazantsev via Phabricator via llvm-commits]

mkazantsev added inline comments.


================
Comment at: llvm/lib/Transforms/Utils/SimplifyCFG.cpp:6617
+        } else if (SwitchInst *SI = dyn_cast<SwitchInst>(T)) {
+          // Create the new block in which will redirect the edges that 
+          // lead to undefine behavior
----------------
"Create an unreachable block and redirect all edges going to BB into this block".


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  https://reviews.llvm.org/D109428/new/

https://reviews.llvm.org/D109428