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

[via llvm-commits]

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@@ -257,6 +264,9 @@ void ProfiledBinary::load() {
   if (ShowDisassemblyOnly)
     decodePseudoProbe(Obj);
 
+  if (LoadFunctionFromSymbol && UsePseudoProbes)
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HighW4y2H3ll wrote:

Ohh, this is to be compatible with the code here:
https://github.com/llvm/llvm-project/blob/af110e15c3cf2b964fb6a399163663e77c0730d1/llvm/tools/llvm-profgen/ProfileGenerator.cpp#L510-L514
`UsePseudoProbes` is needed so we won't use line numbers to generate profile, which won't work with symtab because symtab only have addresses

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