[PATCH] D15690: Gather and Scatter intrinsics in the Loop Vectorizer

Philip Reames via llvm-commits llvm-commits at lists.llvm.org
Wed Feb 17 12:25:18 PST 2016


In my view, a target sub-feature restriction is not sufficient and does 
not address Artur's (reasonable) concern.

Philip

On 02/17/2016 12:10 PM, Demikhovsky, Elena via llvm-commits wrote:
> Usage of masked gather and scatter are limited by target. Currently it is supported on AVX-512 only.
>
> -  Elena
>
> -----Original Message-----
> From: Artur Pilipenko [mailto:apilipenko at azulsystems.com]
> Sent: Wednesday, February 17, 2016 22:07
> To: <reviews+D15690+public+442c59c557c039f1 at reviews.llvm.org> <reviews+D15690+public+442c59c557c039f1 at reviews.llvm.org>
> Cc: Demikhovsky, Elena <elena.demikhovsky at intel.com>; Rapaport, Gil <gil.rapaport at intel.com>; nrotem at apple.com; aschwaighofer at apple.com; Zaks, Ayal <ayal.zaks at intel.com>; pjcoup at gmail.com; mzolotukhin at apple.com; spatel at rotateright.com; llvm-commits at lists.llvm.org
> Subject: Re: [PATCH] D15690: Gather and Scatter intrinsics in the Loop Vectorizer
>
> In the latest patch I see no code to address non-default address spaces problem mentioned in the review. I don't see a test for this either. I assume this code introduces another one bug to loop-vectorize. It should be addressed at least by limiting the scope of the optimization to default address space pointers for now.
>
> Artur
>
>> Feb 17, 2016, в 11:27 PM, "Elena Demikhovsky" <elena.demikhovsky at intel.com> написал(а):
>>
>> This revision was automatically updated to reflect the committed changes.
>> Closed by commit rL261140: Create masked gather and scatter intrinsics in Loop Vectorizer. (authored by delena).
>>
>> Changed prior to commit:
>> http://reviews.llvm.org/D15690?vs=48204&id=48222#toc
>>
>> Repository:
>> rL LLVM
>>
>> http://reviews.llvm.org/D15690
>>
>> Files:
>> llvm/trunk/include/llvm/IR/IRBuilder.h
>> llvm/trunk/lib/IR/IRBuilder.cpp
>> llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp
>> llvm/trunk/test/Transforms/LoopVectorize/X86/gather_scatter.ll
>> llvm/trunk/test/Transforms/LoopVectorize/X86/masked_load_store.ll
>>
>> <D15690.48222.patch>
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