[patch][x86] -march=icelake

[Koval, Julia]

Hi,
I tried omp_clause_mask and it looks ok. But it lacks check if there is any bit or none. With addition of it(as proposed or in some other way it should work. What do you think about this approach(patch attached)?

Thanks,
Julia

> -----Original Message-----
> From: Jakub Jelinek [mailto:jakub@redhat.com]
> Sent: Tuesday, December 19, 2017 2:50 PM
> To: Koval, Julia <julia.koval@intel.com>
> Cc: Richard Biener <richard.guenther@gmail.com>; Uros Bizjak
> <ubizjak@gmail.com>; GCC Patches <gcc-patches@gcc.gnu.org>; Kirill Yukhin
> <kirill.yukhin@gmail.com>
> Subject: Re: [patch][x86] -march=icelake
> 
> On Tue, Dec 19, 2017 at 12:34:03PM +0000, Koval, Julia wrote:
> > >> Maybe [] operator could be used instead of a dynamic handling here.
> > I had another solution in mind, with enums, which then addresses elements
> using its index, please look the patch attached.
> 
> You can also have a look at the omp_clause_mask class in c-common.h, that is
> also something that has been added to handle the case where we run out of
> 64-bits for a particular bitmask, wanted to keep using pretty much the same
> interfaces and be able to handle it fast.  Using 2 enums for the two halves
> and treating it accordingly is also an option.
> 
> I agree sbitmap is too heavy for this.
> 
> 	Jakub
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