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

[via llvm-commits]

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@@ -820,6 +839,95 @@ void ProfiledBinary::populateSymbolAddressList(const ObjectFile *Obj) {
   }
 }
 
+void ProfiledBinary::loadSymbolsFromSymtab(const ObjectFile *Obj) {
+  // Load binary functions from symbol table when Debug info is incomplete.
+  // Strip the internal suffixes which are not reflected in the DWARF info.
+  const SmallVector<StringRef, 10> Suffixes(
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HighW4y2H3ll wrote:

`BinaryFunction` might have multiple overloaded names from symbol table and DWARF, so I'm keeping its DWARF name here and tracking all the alternative names in a separate mapping. The idea is to use symbol table names just as a reference in case the DWARF name doesn't match with the pseudo probe...

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