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...IMO, if we modify the VF calculation for targets/subtargets using TTI where higher VF is supported The vectorizer’s scope will become wider. Did/do you foresee any issue with this? Thanks, Shahid From: Nadav Rotem [mailto:nrotem at apple.com] Sent: Saturday, December 13, 2014 2:47 AM To: Shahid, Asghar-ahmad Cc: llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] Vectorization factor limitation in Loop Vectorizer Hi Shahid, On Dec 10, 2014, at 10:48 PM, Shahid, Asghar-ahmad <Asghar-ahmad.Shahid at amd.com<mailto:Asghar-ahmad.Shahid at amd.com>> wrote: Hi Nadav/Devs I am exploring Loop V...

...ct: xorg Version: unspecified Hardware: x86 (IA32) OS: Windows (All) Status: NEW Severity: critical Priority: medium Component: Driver/nouveau Assignee: nouveau at lists.freedesktop.org Reporter: jawad.asghar at outlook.com QA Contact: xorg-team at lists.x.org JEY HIND! -- You are receiving this mail because: You are the assignee for the bug. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20190306/...

Hi Asghar-Ahmed, I saw your last ping - sorry, I'm away on vacation and back on Wednesday. Generally, I'm not sure that having both absd/hadd and sad are compatible with the discussions going on in other threads, for example my thread about min and max. Given that those two intrinsics are fairly t...

...ank you so much for your response. You suggested approach is what I am right now using. However, it seems that the overhead is a little bit high because we are introducing two more instructions. I was wondering if there was a cheaper way to do it. Best, Zhi On Mon, May 4, 2015 at 2:12 AM, Shahid, Asghar-ahmad < Asghar-ahmad.Shahid at amd.com> wrote: > Hi Zhi, > > > > If I get your question correctly, Yes, you can do it by using the > IRBuilder’s CreateVectorSplat() API. > > > > /// \brief Return a vector value that contains \arg V broadcasted to \p > >...

...mething else? BTW, now my plan is to just add the two intrinsics for 'absolute difference' and 'horizontal add'. Regards, Shahid > -----Original Message----- > From: Renato Golin [mailto:renato.golin at linaro.org] > Sent: Wednesday, May 06, 2015 3:22 PM > To: Shahid, Asghar-ahmad > Cc: James Molloy; llvmdev at cs.uiuc.edu > Subject: Re: [LLVMdev] [RFC][PATCH] Adding absd/hadd/sad intrinsics > > On 6 May 2015 at 06:43, Shahid, Asghar-ahmad <Asghar- > ahmad.Shahid at amd.com> wrote: > > That’s right. I agree with your *pattern vs complexity*...

...*pattern vs complexity* thinking. So I would drop llvm.sad() and go ahead with the remaining two. Does it make sense in general? Regards, Shahid > -----Original Message----- > From: Renato Golin [mailto:renato.golin at linaro.org] > Sent: Tuesday, May 05, 2015 8:40 PM > To: Shahid, Asghar-ahmad > Cc: James Molloy; llvmdev at cs.uiuc.edu > Subject: Re: [LLVMdev] [RFC][PATCH] Adding absd/hadd/sad intrinsics > > On 5 May 2015 at 15:41, Shahid, Asghar-ahmad <Asghar- > ahmad.Shahid at amd.com> wrote: > > With llvm.sad() intrinsic: > > VC1 (Vector Cost) =...

On 4 May 2015 at 08:37, Shahid, Asghar-ahmad <Asghar-ahmad.Shahid at amd.com> wrote: > My worry is regarding the query for cost calculation for specific SAD > instructions such as ‘psad’ (X86) or ‘usad’ (ARM) in Loop Vectorizer. Hi Shahid, The vectorizer's cost model has the ability to return different costs for the sa...

...lar instruction.However, you can do it without intrinsic by pattern matching the LLVM-IRs representing “sum of elements in vector” to your particular instruction in DAGCombiner. Regards, Shahid From: Rail Shafigulin [mailto:rail at esenciatech.com] Sent: Monday, May 09, 2016 11:59 PM To: Shahid, Asghar-ahmad; llvm-dev Cc: Das, Dibyendu Subject: Re: [llvm-dev] sum elements in the vector I'm a little confused. Here is why. I was able to add a vector add instruction to my target without using any intrinsics and without adding any new instructions to LLVM. So here is my question: how come I man...

Hi Nadav/Devs I am exploring Loop Vectorizer to vectorize i8 scalar operations into 8xi8 vector operation. I was expecting the Loop Vectorizer to analyze the profitability for vectorization factor(VF) of 8, However it is not doing so due to the widest type calculation done for the blocks inside the loop. May be I am missing something, however, I am curious to know why Loop Vectorizer limits the

...l be querying with getIntrinsicCost(ID) for these two intrinsics separately, Will VC1==VC2? May be I am missing something obvious? Regards, Shahid > -----Original Message----- > From: Renato Golin [mailto:renato.golin at linaro.org] > Sent: Tuesday, May 05, 2015 7:28 PM > To: Shahid, Asghar-ahmad > Cc: James Molloy; llvmdev at cs.uiuc.edu > Subject: Re: [LLVMdev] [RFC][PATCH] Adding absd/hadd/sad intrinsics > > On 4 May 2015 at 08:37, Shahid, Asghar-ahmad <Asghar- > ahmad.Shahid at amd.com> wrote: > > My worry is regarding the query for cost calculation for...

...that use horizontal arithmetic - Ability to use horizontal operations in SLPVectorizer - Significantly easier cost modeling of vectorizing loops with reductions in LoopVectorize - Other things I've not thought of? Curious what others think? -Chandler On Wed, May 11, 2016 at 10:07 PM Shahid, Asghar-ahmad via llvm-dev < llvm-dev at lists.llvm.org> wrote: > > why in order to add this particular instruction (sum elements in a > vector) I need to add an insrinsic? > > Adding intrinsic is not the only way, it is one of the way and user > WILL-NOT be required to invoke >...

...me can be computed using normal vector operation, and then the final scalar value can be computed using a single horizontal operation. MartinO From: llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org] On Behalf Of Chandler Carruth via llvm-dev Sent: 16 May 2016 2:16 To: Shahid, Asghar-ahmad; Rail Shafigulin; llvm-dev; Hal Finkel Subject: Re: [llvm-dev] sum elements in the vector I'm starting to think we should directly implement horizontal operations on vector types. My suspicion is that coming up with a nice model for this would help us a lot with things like: - Id...

...ve the best result is from VF >=16. The draft of the patch is here: http://reviews.llvm.org/D14840 I will refine the patch later and submit it for review. thanks, Cong On Wed, Nov 18, 2015 at 2:45 PM, Cong Hou <congh at google.com> wrote: > On Mon, Nov 16, 2015 at 9:31 PM, Shahid, Asghar-ahmad > <Asghar-ahmad.Shahid at amd.com> wrote: >> Hi Cong, >> >>> -----Original Message----- >>> From: Cong Hou [mailto:congh at google.com] >>> Sent: Tuesday, November 17, 2015 12:47 AM >>> To: Shahid, Asghar-ahmad >>> Cc: David Li...

Thanks, Shahid. It is fixed now. On Fri, Apr 17, 2015 at 8:50 PM, Shahid, Asghar-ahmad < Asghar-ahmad.Shahid at amd.com> wrote: > Hi zhi, > > > > You have to also pass the value type to getDecalaration() API such as > > > > Value* sqrtv = Intrinsic::getDeclaration(M, Intrinsic::x86_sse2_sqrt_pd, > v->getType()); > > > > Regar...

...I'm Ph.D student of psychometric at the university of Tehran.I use R version 1.8.1. I want to upgrade the R into higher version.I downloaded the latest version "R-1.9.0.tgz". Unfortunately I could not to upgrade the R. Could you tell me how I can to upgrade the R,please? Best regards Asghar Minaei ===== Yours...Asghar Minaei

My target has an instruction that adds up all elements in the vector and stores the result in a register. I'm trying to implement it in my compiler but I'm not sure even where to start. I did look at other targets, but they don't seem to have anything like it ( I could be wrong. My experience with LLVM is limited, so if I missed it, I'd appreciate if someone could point it out ).

Hi All, I would like to introduce intrinsics to generate efficient codes for 'absolute differences', 'horizontal add' and 'sum of absolute differences' Idioms used by user programs. Identifying these idioms at lower level (Codegen) is complex. These idioms can be identified in LV/SLP and vectorized using above intrinsics to generate better code. Proposal: 1. Add

...nd then the final scalar value can be computed using a single horizontal operation. MartinO From: llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org <mailto:llvm-dev-bounces at lists.llvm.org> ] On Behalf Of Chandler Carruth via llvm-dev Sent: 16 May 2016 2:16 To: Shahid, Asghar-ahmad; Rail Shafigulin; llvm-dev; Hal Finkel Subject: Re: [llvm-dev] sum elements in the vector I'm starting to think we should directly implement horizontal operations on vector types. My suspicion is that coming up with a nice model for this would help us a lot with things like: -...

...; > Do you mind providing a concrete example of X86 code where an intrinsic > was added (preferrable with filenames and line numbers)? I'm having > difficulty tracking down the steps you provided. > > Any help is appreciated. > > > On Mon, Apr 4, 2016 at 9:02 PM, Shahid, Asghar-ahmad < > Asghar-ahmad.Shahid at amd.com> wrote: > >> Hi Rail, >> >> >> >> We had done this for generation of X86 PSAD (sum of absolute difference) >> instruction through >> >> Llvm intrinsic. Doing this requires following >> >&gt...

Hi Shahid. Do you mind providing a concrete example of X86 code where an intrinsic was added (preferrable with filenames and line numbers)? I'm having difficulty tracking down the steps you provided. Any help is appreciated. On Mon, Apr 4, 2016 at 9:02 PM, Shahid, Asghar-ahmad < Asghar-ahmad.Shahid at amd.com> wrote: > Hi Rail, > > > > We had done this for generation of X86 PSAD (sum of absolute difference) > instruction through > > Llvm intrinsic. Doing this requires following > > 1. Define an intrinsic, xyz(), for the r...