[clang] [llvm] [coroutine] Implement llvm.coro.await.suspend intrinsic (PR #79712)

[Chuanqi Xu via cfe-commits]

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@@ -2013,6 +2104,10 @@ splitCoroutine(Function &F, SmallVectorImpl<Function *> &Clones,
   buildCoroutineFrame(F, Shape, MaterializableCallback);
   replaceFrameSizeAndAlignment(Shape);
 
+  IRBuilder<> Builder(M.getContext());
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ChuanqiXu9 wrote:

```suggestion
  IRBuilder<> Builder(F.getContext());
```

then we can get rid of `Module`.

https://github.com/llvm/llvm-project/pull/79712