[compiler-rt] [llvm] [CallPromotionUtils]Implement conditional indirect call promotion with vtable-based comparison (PR #81378)

[Mingming Liu via llvm-commits]

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@@ -51,6 +59,26 @@ CallBase &promoteCall(CallBase &CB, Function *Callee,
 CallBase &promoteCallWithIfThenElse(CallBase &CB, Function *Callee,
                                     MDNode *BranchWeights = nullptr);
 
+/// This is similar to `promoteCallWithIfThenElse` except that the condition to
+/// promote a virtual call is that \p VPtr is the same as any of \p
+/// AddressPoints.
+///
+/// This function is expected to be used on virtual calls (a subset of indirect
+/// calls). \p VPtr is the virtual table address stored in the objects, and
+/// \p AddressPoints contains address points of vtables to be compared with.
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minglotus-6 wrote:

done.

https://github.com/llvm/llvm-project/pull/81378