On 09/05/2018 09:28 PM, Indu Bhagat wrote: > Patch for PR 86957 " gcc should warn about missing profiles for a compilation > unit or a new function with -fprofile-use". > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86957 > > The patch adds -Wmissing-profile warning flag to alert user about cases when > there is no profile data for a compilation unit or a function when using > -fprofile-use. > > The flag is on by default when -fprofile-use is specified and generates errors > by default (like -Wcoverage-mismatch). > > The attachment pr86957-missing-profile-diagnostic shows the behavior of GCC > with the patch. > > Thanks > Indu > > ------------------------------------------------------ > > > gcc/ChangeLog: > > 2018-09-05 "Indu Bhagat" <"indu.bha...@oracle.com"> > > * common.opt: New warning option -Wmissing-profile. > * coverage.c (get_coverage_counts): Add warning for missing .gcda > file. > * doc/invoke.texi: Document -Wmissing-profile. > * profile.c (get_exec_counts): Add warning for missing feedback > profile for a function. > * toplev.c (process_options): -Wmissing-profile warning as error. >
... and please add a test-case for the missing file. That's easy to achieve by running a test-case with -fprofile-use. Martin
