Mircea Trofin e7568b68da Revert "[benchmarks] Move libcxx's fork of google/benchmark and llvm/utils'"
This reverts commit c6f7b720ecfa6db40c648eb05e319f8a817110e9.

Some buildbots are failing, will investigate and reland.
Example:
  https://lab.llvm.org/buildbot#builders/138/builds/14067
  https://lab.llvm.org/buildbot#builders/73/builds/20159
2021-11-16 09:28:50 -08:00

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C++

#include <regex>
#include <string>
int main() {
const std::string str = "test0159";
std::regex re;
re = std::regex("^[a-z]+[0-9]+$",
std::regex_constants::extended | std::regex_constants::nosubs);
return std::regex_search(str, re) ? 0 : -1;
}