search for: __llvm_profile_set_filename

Hi Gabor, I noticed that one particular test fails intermittently on the AArch64 bot: http://lab.llvm.org:8011/builders/clang-native-aarch64-full FAIL: Profile:: instrprof-set-filename-then-reset-default.c Some times on stage1, others on stage2, others no fail at all. All the commits during these builds are not related to profiling or AArch64, so I believe this has something to do with the