[llvm] [BOLT]Identify indirect call (PR #123305)

[Paschalis Mpeis via llvm-commits]

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@@ -1961,6 +1961,59 @@ bool BinaryFunction::postProcessIndirectBranches(
       bool IsEpilogue = llvm::any_of(BB, [&](const MCInst &Instr) {
         return BC.MIB->isLeave(Instr) || BC.MIB->isPop(Instr);
       });
+      if (BC.isAArch64()) {
+        // Any adr instruction of aarch64 will generate a new entry,
+        // Adr instruction cannt afford to do any optimizations
+        if (!IsEpilogue && !isMultiEntry()) {
+          BinaryBasicBlock::iterator LastDefCFAOffsetInstIter = BB.end();
+          // find the last OpDefCfaOffset 0 instruction.
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paschalis-mpeis wrote:

IIUC, here we get the first `OpDefCfaOffset==0` instruction, right?

nit: Also please begin your comments with a Capital letter, ending with a dot.

https://github.com/llvm/llvm-project/pull/123305