[llvm] [MemProf] Remove context id set from nodes and recompute on demand (PR #94415)

[Kazu Hirata via llvm-commits]

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@@ -2446,13 +2515,6 @@ void CallsiteContextGraph<DerivedCCG, FuncTy, CallTy>::
   // Now perform some updates that are common to all cases: the NewCallee gets
   // the moved ids added, and we need to remove those ids from OldCallee and
   // update its alloc type (NewCallee alloc type updates handled above).
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kazutakahirata wrote:

Do you need to update this comment now that you are moving the block of code just after the "for" loop?

https://github.com/llvm/llvm-project/pull/94415