[llvm] [BOLT] Add support for safe-icf (PR #116275)

[Maksim Panchenko via llvm-commits]

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@@ -27,15 +28,74 @@ class IdenticalCodeFolding : public BinaryFunctionPass {
       return false;
     if (BF.hasSDTMarker())
       return false;
+    if (BF.hasAddressTaken())
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maksfb wrote:

We should place the "safe ICF" check here assuming `AddressTaken` property is independent of the ICF pass.

https://github.com/llvm/llvm-project/pull/116275