[llvm] [llvm-profgen] Loading binary functions from .symtab when DWARF info is incomplete (PR #163654)

[via llvm-commits]

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@@ -482,6 +483,10 @@ inline uint64_t SymbolRef::getCommonSize() const {
   return getObject()->getCommonSymbolSize(getRawDataRefImpl());
 }
 
+inline uint64_t SymbolRef::getSize() const {
+  return getObject()->getCommonSymbolSizeImpl(getRawDataRefImpl());
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HighW4y2H3ll wrote:

makes sense. let me change it to ELF-specific then. I did something like this:
```c++
// ProfiledBinary::populateSymbolsFromBinary()
uint64_t Size = 0;
if (isa<ELFObjectFileBase>(Symbol.getObject())) {
  ELFSymbolRef ElfSymbol(Symbol);
  Size = ElfSymbol.getSize();
}
```

https://github.com/llvm/llvm-project/pull/163654