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Re: [patch][x86] -march=icelake

From: Jakub Jelinek <jakub at redhat dot com>
To: "Koval, Julia" <julia dot koval at intel dot com>
Cc: Richard Biener <richard dot guenther at gmail dot com>, Uros Bizjak <ubizjak at gmail dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>, Kirill Yukhin <kirill dot yukhin at gmail dot com>
Date: Tue, 19 Dec 2017 14:49:31 +0100
Subject: Re: [patch][x86] -march=icelake
Authentication-results: sourceware.org; auth=none
References: <4E89A029A0F8D443B436A5167BA3C53F42ACE34D@IRSMSX101.ger.corp.intel.com> <CAFULd4YbezpXsDTgOohBvY5u68tTb0vtL5bTBVtUcV4owJ4b9Q@mail.gmail.com> <4E89A029A0F8D443B436A5167BA3C53F8A45EE15@IRSMSX101.ger.corp.intel.com> <CAFULd4anDT-gLMFv_YcH8+D_ZdUa5jZnpuxH4GOskP992UKNXA@mail.gmail.com> <CAFiYyc0f=9R0d9vSXPA+0FVYFf7bhF4JCZnF15-ucsiFjMxt=A@mail.gmail.com> <4E89A029A0F8D443B436A5167BA3C53F8A461F0A@IRSMSX101.ger.corp.intel.com>
Reply-to: Jakub Jelinek <jakub at redhat dot com>

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

References:
- RE: [patch][x86] -march=icelake
  - From: Koval, Julia
- Re: [patch][x86] -march=icelake
  - From: Uros Bizjak
- Re: [patch][x86] -march=icelake
  - From: Richard Biener
- RE: [patch][x86] -march=icelake
  - From: Koval, Julia

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