[patch] Forward all -f* options to -cc1

[Rafael Espíndola]

Now with the patch.

On 28 September 2013 12:40, Rafael Espíndola <rafael.espindola at gmail.com> wrote:
>> I really disagree with the direction of this patch.
>>
>> Currently we have succeeded at factoring all of the GCC '-f' flag-spelling
>> compatibility into the driver, and keeping it out of the frontend. I would
>> personally rather keep it that way, and have a much more constrained and
>> justified command line flag interface at the CC1 boundary. I find this
>> separation of concerns extremely useful.
>
> If the -cc1 option handling can be made *really* simple, I would be ok
> with it. By really simple I mean something like "all boolean options
> default to false, the driver just passes a list of flags to enable".
>
> In any case, the main intention of this patch work is avoid the code
> duplication/bugs when handling a -f/-fno- pair, so it can be done in
> the driver too.
>
> The attached patch is the driver version of the previous one. The next
> steps are somewhat similar: Start a .td file with simple definitions
> for f flags. Use tablegen to produce an enum of all flags and matching
> code. The translation to -cc1 options and the logic in -cc1 itself
> would remain manual for now.
>
> Cheers,
> Rafael
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