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Here is the revised proposal for the LLVM/SPIR-V converter. Please comment. Thanks. Proposal of Adding SPIRV Target Background SPIR-V is a portable binary format for OpenCL kernels and GLSL shaders. A typical use case of SPIR-V is as follows: 1. An application developer uses Clang to compile an OpenCL kernel source code to a SPIR-V bi...

From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of Richard Smith Sent: Wednesday, September 12, 2012 1:55 PM To: Ouriel, Boaz Cc: cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] SPIR Portability Discussion On Wed, Sep 12, 2012 at 12:27 PM, Ouriel, Boaz <boaz.ouriel at intel.com<mailto:boaz.ouriel at intel.com>> wrote: Hey All, This is a very big topic in SPIR and probably a very controversial one as well. It includes dealing with 32 vs. 64 bit architectures and Op...

Hi Mehdi, Thank you for your comments. My comments are below. Sam From: Mehdi Amini [mailto:mehdi.amini at apple.com] Sent: Wednesday, June 17, 2015 12:43 PM To: Liu, Yaxun (Sam) Cc: llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] [RFC] Proposal for Adding SPIRV Target Hi Liu, Thanks for the detailed proposal. On Jun 17, 2015, at 5:44 AM, Liu, Yaxun (Sam) <Yaxun.Liu at amd.com<mailto:Yaxun.Liu at amd.com>> wrote: Here is the revised proposal for the LLVM/SPIR-V converter. Please comment. Thanks. Proposal of Adding SPIRV Target Backgroun...

Hey All, This is a very big topic in SPIR and probably a very controversial one as well. It includes dealing with 32 vs. 64 bit architectures and OpenCL "C" endianness. We have written down some of the aspects, but of course did not cover everything - let's start a discussion on the portability and see where it takes us. I su...

...t; > ** ** > > *From:* llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] *On > Behalf Of *Richard Smith > *Sent:* Wednesday, September 12, 2012 1:55 PM > *To:* Ouriel, Boaz > *Cc:* cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu > *Subject:* Re: [LLVMdev] SPIR Portability Discussion**** > > ** ** > > On Wed, Sep 12, 2012 at 12:27 PM, Ouriel, Boaz <boaz.ouriel at intel.com> > wrote:**** > > Hey All, > > This is a very big topic in SPIR and probably a very controversial one as > well. It includes dealing with 32 vs. 64 b...

From: Mehdi Amini [mailto:mehdi.amini at apple.com] Sent: Thursday, June 18, 2015 11:24 AM To: Liu, Yaxun (Sam) Cc: llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] [RFC] Proposal for Adding SPIRV Target On Jun 18, 2015, at 6:23 AM, Liu, Yaxun (Sam) <Yaxun.Liu at amd.com<mailto:Yaxun.Liu at amd.com>> wrote: Hi Mehdi, Thank you for your comments. My comments are below. Sam From: Mehdi Amini [mailto:mehdi.amini at apple.com] Sent: Wednesday, June 17, 2015 12:43 PM To: Liu, Y...

Hi All, In continuation of the previous SPIR introduction email here is a link to the specification: http://www.khronos.org/registry/cl/specs/spir_spec-1.0-provisional.pdf The first topic which we would like to discuss is "SPIR portability". I will send soon an additional mail which will help in leading the discussion on this topic...

> -----Original Message----- > From: Eli Friedman [mailto:eli.friedman at gmail.com] > Sent: Wednesday, September 12, 2012 3:50 PM > To: Villmow, Micah > Cc: Richard Smith; cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu > Subject: Re: [cfe-dev] [LLVMdev] SPIR Portability Discussion > > On Wed, Sep 12, 2012 at 3:40 PM, Villmow, Micah <Micah.Villmow at amd.com> > wrote: > > > > > > > > > > From: metafoo at gmail.com [mailto:metafoo at gmail.com] On Behalf Of > Richard > > Smith > > Sent: Wednesd...

Greetings All, I am sending this mail on behalf of the OpenCL Khronos members. **** Introduction **** Lately, Khronos has ratified a new provisional specification which is called SPIR. This specification standardizes an intermediate representation for the OpenCL kernel language. It is based on LLVM infrastructure and this is why I am sending this mail to the LLVM mailing list. Khronos members would like to initiate a review on the specification with the LLVM community. ****...

From: metafoo at gmail.com [mailto:metafoo at gmail.com] On Behalf Of Richard Smith Sent: Wednesday, September 12, 2012 2:51 PM To: Villmow, Micah Cc: Ouriel, Boaz; cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] SPIR Portability Discussion On Wed, Sep 12, 2012 at 2:23 PM, Villmow, Micah <Micah.Villmow at amd.com<mailto:Micah.Villmow at amd.com>> wrote: From: llvmdev-bounces at cs.uiuc.edu<mailto:llvmdev-bounces at cs.uiuc.edu> [mailto:llvmdev-bounces at cs.uiuc.edu<mailto:llvmdev-bounces...

It is just a header file. All source code is under lib/Target/SPIRV since they really belong there. Those who want to use the conversion functionality just need to link with the SPIRV target library. Any suggestion about a better location for the header file? Thanks. Sam From: Chris Bieneman [mailto:beanz at apple.com] Sent: Wednesday, June 17, 2015 2:31 PM To...

...ion special calling conventions and adding them to LLVM. What are their semantics? And what is their purpose? (b) Why disallow type conversion for vector types? (ss. 3.3) Cheers, James On Tue, 2012-09-11 at 12:56 +0100, Ouriel, Boaz wrote: > Hi All, > > In continuation of the previous SPIR introduction email here is a link to the specification: > http://www.khronos.org/registry/cl/specs/spir_spec-1.0-provisional.pdf > > The first topic which we would like to discuss is "SPIR portability". > I will send soon an additional mail which will help in leading the disc...

...> > > > From: metafoo at gmail.com [mailto:metafoo at gmail.com] On Behalf Of Richard > Smith > Sent: Wednesday, September 12, 2012 3:30 PM > To: Villmow, Micah > Cc: Eli Friedman; cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu > > > Subject: Re: [cfe-dev] [LLVMdev] SPIR Portability Discussion > > > > On Wed, Sep 12, 2012 at 3:26 PM, Villmow, Micah <Micah.Villmow at amd.com> > wrote: > > > >> -----Original Message----- >> From: Eli Friedman [mailto:eli.friedman at gmail.com] >> Sent: Wednesday, September 12, 2012 3:22...

> -----Original Message----- > From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] > On Behalf Of James Molloy > Sent: Tuesday, September 11, 2012 8:49 AM > To: Ouriel, Boaz > Cc: cfe-dev at cs.uiuc.edu; llvmdev at cs.uiuc.edu > Subject: Re: [LLVMdev] SPIR provisional specifciation is now available > in the Khronos website > > Hi Boaz, > > I have a couple of specific questions: > > (a) You mention special calling conventions and adding them to LLVM. > What are their semantics? And what is their purpose? [Villmow, Micah] One...

I am already successfully generating SPIR-V with a forward port of Khronos’ SPIR-V LLVM. What does one need in order to generate SPIR? From what I gather it is based on a specific LLVM IR version (3.4?) with a bunch of metadata. Is it possible to generate SPIR from LLVM trunk? If so how? Thanks Nic -------------- next part --------------...

On Wed, Sep 12, 2012 at 12:27 PM, Ouriel, Boaz <boaz.ouriel at intel.com>wrote: > Hey All, > > This is a very big topic in SPIR and probably a very controversial one as > well. It includes dealing with 32 vs. 64 bit architectures and OpenCL "C" > endianness. > We have written down some of the aspects, but of course did not cover > everything - let's start a discussion on the portability and see whe...

Hi James, some additional comments regarding some of your questions: Q: Is SPIR meant to be storage-only, or to allow optimizations to be done? I agree with Micah that optimizing a SPIR module might make it less portable. However, SPIR doesn't prohibit optimizations. It is up to the OpenCL optimizer to decide when to "materialize" SPIR to a device specific LLVM...

...u at amd.com> wrote: > > > > *From:* Mehdi Amini [mailto:mehdi.amini at apple.com <mehdi.amini at apple.com>] > > *Sent:* Thursday, June 18, 2015 11:24 AM > *To:* Liu, Yaxun (Sam) > *Cc:* llvmdev at cs.uiuc.edu > *Subject:* Re: [LLVMdev] [RFC] Proposal for Adding SPIRV Target > > > > On Jun 18, 2015, at 6:23 AM, Liu, Yaxun (Sam) <Yaxun.Liu at amd.com> wrote: > > Hi Mehdi, > > Thank you for your comments. My comments are below. > > Sam > > *From:* Mehdi Amini [mailto:mehdi.amini at apple.com <mehdi.amini at apple.com&g...

So we have been in discussions within the Khronos SPIR-V work group on our push to get our SPIR-V code into tip LLVM and have drawn the following conclusions; * We absolutely must create a fully fledged backend that uses all the machinery that target backends are expected to use. * We probably have to split out the SPIR-V -> LLVM IR into...

...ctions. > Another is to differentiate between the standard calling conventions that have > device specific assumptions built into them. Do you have an example of such a device-specific assumption? Why wouldn't the default (no explicit) calling convention do for a storage-only format like SPIR? When it does come to codegen (for a CPU target), an LLVM backend would be forced to change the calling convention back to something standard anyway. So what's the advantage of adding a semanticless calling convention over metadata? >> (b) Why disallow type conversion for vector types?...