Switch to FindSymbolsMatchingRegExAndType() from FindFunctions() in FindLibCppStdFunctionCallableInfo()

[shafik]

Summary

FindLibCppStdFunctionCallableInfo() currently uses FindFunctions() in order to find a lambdas operator()() but using FindSymbolsMatchingRegExAndType() is cheaper and if we also anchor the regex using ^ this adds some additional performance gains.

[friss]

This seems obviously better, go for it.

source/Target/CPPLanguageRuntime.cpp

auto get_name = [&first_template_parameter, &symbol]() {
     return first_template_parameter.str() + R"(::operator\(\)\(.*\))";
     ;
   };
 
   std::string func_to_match = get_name();
 
   SymbolContextList scl;
 
-  target.GetImages().FindFunctions(RegularExpression{func_to_match}, true, true,
-                                   true, scl);
+  target.GetImages().FindSymbolsMatchingRegExAndType(
+      RegularExpression{R"(^)" + func_to_match}, eSymbolTypeAny, scl, true);
 
   // Case 1,2 or 3
   if (scl.GetSize() >= 1) {
     SymbolContext sc2 = scl[0];
 
     AddressRange range;
     sc2.GetAddressRange(eSymbolContextEverything, 0, false, range);