[llvm] [BOLT] Support instrumentation hook via DT_FINI_ARRAY (PR #67348)

[Vladislav Khmelevsky via llvm-commits]

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@@ -1276,6 +1280,57 @@ void RewriteInstance::discoverFileObjects() {
   registerFragments();
 }
 
+Error RewriteInstance::discoverFiniAddress() {
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yota9 wrote:

Probably we should move this code and updateFiniReloc to InstrumentationRuntimeLibrary or even better to runtimeLibrary, since any of them might using this hack and it would be great to make it more universal, what do you think?

https://github.com/llvm/llvm-project/pull/67348