[llvm] [BOLT] Support runtime library hook via DT_INIT_ARRAY (PR #167467)

[Maksim Panchenko via llvm-commits]

================
@@ -5692,14 +5870,21 @@ void RewriteInstance::patchELFDynamic(ELFObjectFile<ELFT> *File) {
       }
       RuntimeLibrary *RtLibrary = BC->getRuntimeLibrary();
       if (RtLibrary && Dyn.getTag() == ELF::DT_FINI) {
-        if (uint64_t Addr = RtLibrary->getRuntimeFiniAddress())
+        if (uint64_t Addr = RtLibrary->getRuntimeFiniAddress()) {
           NewDE.d_un.d_ptr = Addr;
+          outs() << "BOLT-INFO: Runtime library finalization was hooked via "
----------------
maksfb wrote:

```suggestion
          BC->outs() << "BOLT-INFO: runtime library finalization was hooked via "
```

https://github.com/llvm/llvm-project/pull/167467