[clang] [llvm] [RFC][Coroutines] Implement HALO for coroutines that flow off final suspend (PR #185336)

[Chuanqi Xu via llvm-commits]

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@@ -249,8 +259,8 @@ bool CoroIdElider::canCoroBeginEscape(
   Worklist.push_back(CB->getParent());
 
   SmallPtrSet<const BasicBlock *, 32> Visited;
-  // Consider basicblock of coro.destroy as visited one, so that we
-  // skip the path pass through coro.destroy.
+  // Consider basicblock of coro.dead as visited one, so that we
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ChuanqiXu9 wrote:

In accurate comment?  BeginDeadMap may contain destroy too?

https://github.com/llvm/llvm-project/pull/185336