[Clang] -fprofile-sample-use option has not effect

[mikolaj-pirog]

Issuing clang -fprofile-sample-use file.cc has no effect: nothing is printed, binary isn't built with profiling info; the option seems to be ignored. When file is specified with fprofile-sample-use=profile.prof it works as expected. This is surprising, since similar option fprofile-use behaves differently -- when no file is specified, it looks for default.profdata in the current directory and prints error message when it doesn't find any. The fprofile-sample-use should behave as fprofile-use in this case

[mikolaj-pirog]

Fixed by #113528

[llvmbot]

@llvm/issue-subscribers-clang-driver

Author: Mikołaj Piróg (mikolaj-pirog)

Issuing `clang -fprofile-sample-use file.cc` has no effect: nothing is printed, binary isn't built with profiling info; the option seems to be ignored. When file is specified with `fprofile-sample-use=profile.prof` it works as expected. This is surprising, since similar option `fprofile-use` behaves differently -- when no file is specified, it looks for `default.profdata` in the current directory and prints error message when it doesn't find any. The `fprofile-sample-use` should behave as `fprofile-use` in this case