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

[Chuanqi Xu via cfe-commits]

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@@ -338,6 +386,85 @@ static QualType getCoroutineSuspendExprReturnType(const ASTContext &Ctx,
 }
 #endif
 
+llvm::Function *CodeGenFunction::generateAwaitSuspendHelper(
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ChuanqiXu9 wrote:

For such function definitions, generally we need a comment about its reasoning and behavior. This is not for me but other developers.

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