On Wed, Sep 28, 2016 at 01:20:22AM +0000, Joseph Myers wrote: > On Wed, 28 Sep 2016, Alan Modra wrote: > > > I've also added a new option, default on, that disables output of > > .gnu_attribute tags. That's needed because this patch alone > > introduces libstdc++ testsuite regressions, fixed by the next patch. > > This option is missing documentation in invoke.texi.
Oops, I'll add that. > > +mgnu-attr > > +Target Report Var(rs6000_gnu_attr) Init(-1) Save > > +Emit .gnu_attribute tags. > > Why Init(-1)? That's normally for cases where there is code that checks > if it's still -1 (i.e. no option passed explicitly) and does something > different in that case, but I don't see any such code in this patch. Yes, it can be Init(1). I copied from other options in sysv4.opt. Incidentally, in playing with #pragma GCC target "-mno-gnu-attr" I find that it affects all functions in a file, rather than just functions defined later in the file. I'll look into that too. -- Alan Modra Australia Development Lab, IBM
