[llvm] [WinEH] Emit unreachable on malformed catchpad (PR #222181)

[Eli Friedman via llvm-commits]

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@@ -921,6 +1039,7 @@ bool WinEHPrepareImpl::cloneCommonBlocks(Function &F) {
   // *and* the new basic blocks themselves.
   for (auto &Funclets : FuncletBlocks) {
     BasicBlock *FuncletPadBB = Funclets.first;
+    Changed |= removeMalformedCatchswitch(FuncletPadBB);
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efriedma-quic wrote:

Can you pass in the FuncletToken instead of the FuncletPadBB?

https://github.com/llvm/llvm-project/pull/222181