[llvm] [BOLT] Support computed goto and allow map addrs inside functions (PR #120267)

[Ash Dobrescu via llvm-commits]

================
@@ -2439,6 +2439,26 @@ void RewriteInstance::readDynamicRelocations(const SectionRef &Section,
     if (Symbol)
       SymbolIndex[Symbol] = getRelocationSymbol(InputFile, Rel);
 
+    const uint64_t ReferencedAddress = SymbolAddress + Addend;
+    BinaryFunction *Func =
+        BC->getBinaryFunctionContainingAddress(ReferencedAddress);
----------------
Rin18 wrote:

I think this check might be unnecessary. While testing this patch, I found that `R_*_RELATIVE` relocations are of the form `*ABS*+Addend`. IE:
```
$ objdump -DR /usr/bin/* | grep 'R_AARCH64_RELATIVE*
<addrs1>: R_AARCH64_RELATIVE       *ABS*+0xaac0
<addrs2>: R_AARCH64_RELATIVE       *ABS*+0xb20a4
```
I have added a check to make sure we exit if that is not the case. 


https://github.com/llvm/llvm-project/pull/120267