On Wed, May 31, 2017 at 01:24:47PM +0200, Martin Liška wrote:
> On 05/31/2017 10:35 AM, Jakub Jelinek wrote:
> > On Wed, May 31, 2017 at 10:04:53AM +0200, Martin Liška wrote:
> >> diff --git a/gcc/common.opt b/gcc/common.opt
> >> index 13305558d2d..5e9942d5100 100644
> >> --- a/gcc/common.opt
> >> +++ b/gcc/common.opt
> >> @@ -222,9 +222,13 @@ bool flag_opts_finished
> >>  Variable
> >>  unsigned int flag_sanitize
> >>  
> >> +###
> >> +Common RejectNegative Joined UInteger Var(flag_no_sanitize_fn) PerFunction
> >> +No sanitize flags for a function
> > 
> > This looks weird, you are redefining the -### option which is normally
> > a driver option.
> 
> I know. I was thinking that it's also a 'dummy' value.

It is not.

> > I would have thought you just want a Variable, like the one right below
> > this.  Aren't all "Variable"s per-function?
> 
> Unfortunately not. Well, probably adding new type 'PerFunctionVariable' would 
> be
> solution. Then optc-save-gen.awk needs to be learned how to save/restore 
> these variables.
> 
> Is it the way we want to go?

Yes.  We already have TargetVariable.  Or allow specifying
Variable PerFunction

CCing Joseph as option handling maintainer.

        Jakub

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