On Tue, Sep 2, 2014 at 5:00 PM, Andi Kleen <a...@linux.intel.com> wrote: >> Hmm, why not make -no-pg (does that exist?) and/or -mno-fentry > > I'm not sure. > >> do this? That is, I don't see the need for a new option. > > That would be really odd behavior. An yes/no option whose default > is controlled by other object files' command line. > And -pg would be for all files in LTO, and no-pg only for that file, > so not be symmetric. > > I think an explicit different option has far cleaner semantics for > now (at least until the LTO option mess can be properly cleaned up)
No, not a new "fake" option either but just initialize DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT properly when not doing -pg or -mfentry (that is, set it to 1). Richard. > -Andi
