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From: Segher Boessenkool <segher@kernel.crashing.org>
To: Jakub Jelinek <jakub@redhat.com>
Cc: Richard Biener <rguenther@suse.de>,
	Uros Bizjak <ubizjak@gmail.com>,
	       Tom de Vries <tdevries@suse.de>,
	Martin Jambor <mjambor@suse.cz>,
	       gcc-patches@gcc.gnu.org,
	Richard Earnshaw <richard.earnshaw@arm.com>,
	       Andreas Krebbel <krebbel@linux.ibm.com>
Subject: Re: [RFC PATCH] targetm.omp.device_kind_arch_isa and OpenMP declare variant kind/arch/isa handling
Date: Tue, 29 Oct 2019 22:57:00 -0000	[thread overview]
Message-ID: <20191029224011.GH28442@gate.crashing.org> (raw)
In-Reply-To: <20191029171531.GI4650@tucnak>

Hi!

On Tue, Oct 29, 2019 at 06:15:31PM +0100, Jakub Jelinek wrote:
> The standard makes it implementation defined what an arch is and what is
> isa, but I think because there is no selector like target that arch should
> mostly contain identifiers that match the ABI incompatible stuff (target,
> perhaps whether it is 32-bit or 64-bit, plus endianity where needed etc.)
> and keep isa to be identifiers for the ISAs, or perhaps where there are no
> clear ISA names say architecture variants or revisions or similar.
> 
> I've only implemented i386 and nvptx so far, will leave the rest to
> port maintainers; would be nice to coordinate what is added a little bit
> with other implementations like LLVM, if they'd be willing to coordinate.

What would this be used for?  Can you give some more context?

There already are a lot of different ways to get information about the
execution environment you're running on; why is this any better?


Segher

  reply	other threads:[~2019-10-29 22:40 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-29 17:44 Jakub Jelinek
2019-10-29 22:57 ` Segher Boessenkool [this message]
2019-10-30  3:13   ` Jakub Jelinek
2019-10-30 22:05     ` Segher Boessenkool
2019-10-30 14:20 ` Szabolcs Nagy
2019-10-30 14:51   ` Jakub Jelinek
2019-10-30 17:40     ` Szabolcs Nagy
2019-10-31  9:35     ` Richard Sandiford
2019-10-31  9:39       ` Jakub Jelinek
2019-10-31 10:55         ` Szabolcs Nagy
2019-11-01 17:15 ` Martin Jambor

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