[cfe-dev] [RFC] Support intel_reqd_sub_group_size attribute

[Anastasia Stulova via cfe-dev]

Hi Xiuli,

Sure, feel free to create the review.

Sorry for delay, I missed that somehow! ☹

Anastasia

From: Hal Finkel [mailto:hfinkel at anl.gov]
Sent: 09 March 2017 15:49
To: Pan Xiuli; Anastasia Stulova; Liu, Yaxun (Sam); Bader, Alexey; cfe-dev at lists.llvm.org
Cc: Pan, Xiuli
Subject: Re: [cfe-dev] [RFC] Support intel_reqd_sub_group_size attribute



On 03/09/2017 09:44 AM, Hal Finkel via cfe-dev wrote:

Hi Xiuli,

This looks like a simple attribute to parse, __attribute__((intel_reqd_sub_group_size(<int>))), and I don't see why this would be controversial. I recommend just sending a patch for review.

I'm assuming that you're just going to emit corresponding kernel metadata. If the handling will be more involved than that, then it might be worth discussing beforehand.

 -Hal



 -Hal

On 02/28/2017 12:55 AM, Pan Xiuli via cfe-dev wrote:
Hi Anastasia,

We are now enabling some Intel OpenCL extension and find in extension cl_intel_required_subgroup_size (https://www.khronos.org/registry/OpenCL/extensions/intel/cl_intel_required_subgroup_size.txt) has an attribute intel_reqd_sub_group_size that is very useful for intel subgroup usage and does not supported by clang now. And I want to send a patch to enable it, what do you think about this?

Thanks
Xiuli





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Hal Finkel

Lead, Compiler Technology and Programming Languages

Leadership Computing Facility

Argonne National Laboratory




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Hal Finkel

Lead, Compiler Technology and Programming Languages

Leadership Computing Facility

Argonne National Laboratory
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