[llvm] [BOLT][AArch64] Implemented createDummyReturnFunction. (PR #96626)

[Paschalis Mpeis via llvm-commits]

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@@ -1582,6 +1607,12 @@ class AArch64MCPlusBuilder : public MCPlusBuilder {
     return Instrs;
   }
 
+  InstructionListType createDummyReturnFunction(MCContext *Ctx) const override {
+    InstructionListType Insts(1);
+    createReturn(Insts[0]);
+    return Insts;
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paschalis-mpeis wrote:

Yeap, I also agree and see the pros/cons of both sides.

Just to be clear, your preference is still a base class implementation or making this method pure virtual? (but the rest of the MCBuilder will remain as is).

https://github.com/llvm/llvm-project/pull/96626