Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-12-03 Thread Bernd Schmidt
On 11/29/2013 06:12 PM, Jakub Jelinek wrote: On Fri, Nov 29, 2013 at 06:07:38PM +0100, Bernd Schmidt wrote: By what mechanism do you choose? This is unclear to me from what I've seen. Does this involve user action, and what's the advantage of doing it this way? See the 3 threads I've

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-12-03 Thread Michael V. Zolotukhin
Hi Bernd, I am working on offloading support for OpenMP4, so I'll try to share my vision of how everything works and answer your questions. GCC compiles host version of the code (as usual) and dumps Gimple, as it does for LTO, but for offloading. Gimple IR is stored only for functions/variables

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-12-02 Thread Richard Biener
On Fri, Nov 29, 2013 at 4:03 PM, Jakub Jelinek ja...@redhat.com wrote: On Fri, Nov 29, 2013 at 01:36:48PM +0100, Richard Biener wrote: Thoughts, comments? Does anyone have a good name for these accelerator targets or output targets, something that avoids the overloaded word target (I was

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Bernd Schmidt
On 11/20/2013 10:36 AM, Jakub Jelinek wrote: On Wed, Nov 20, 2013 at 10:34:30AM +0100, Richard Biener wrote: On Tue, Nov 19, 2013 at 10:58 AM, Ilya Tocar tocarip.in...@gmail.com wrote: On 14 Nov 11:27, Richard Biener wrote: + /* Set when symbol needs to be dumped for lto/offloading. */ +

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Richard Biener
On Fri, Nov 29, 2013 at 1:17 PM, Bernd Schmidt ber...@codesourcery.com wrote: On 11/20/2013 10:36 AM, Jakub Jelinek wrote: On Wed, Nov 20, 2013 at 10:34:30AM +0100, Richard Biener wrote: On Tue, Nov 19, 2013 at 10:58 AM, Ilya Tocar tocarip.in...@gmail.com wrote: On 14 Nov 11:27, Richard

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Bernd Schmidt
On 11/29/2013 01:36 PM, Richard Biener wrote: Note that we (SUSE/AMD) sofar think we can go an easier route, not adding a real backend that targets HSAIL/BRIG but instead use a custom GIMPLE SSA - HSAIL/BRIG translator (including a SSA based register allocator). Which if course simplifies

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Richard Biener
On Fri, Nov 29, 2013 at 1:50 PM, Bernd Schmidt ber...@codesourcery.com wrote: On 11/29/2013 01:36 PM, Richard Biener wrote: Note that we (SUSE/AMD) sofar think we can go an easier route, not adding a real backend that targets HSAIL/BRIG but instead use a custom GIMPLE SSA - HSAIL/BRIG

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Kirill Yukhin
Hello Bernd, On 29 Nov 13:17, Bernd Schmidt wrote: 5. There's a new DECL_TARGET which refers to this list of target machines. It's set when creating a child function from e.g. #pragma acc parallel Actually, I do not understand, what term `target machine' means here. Are you talking about to

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Bernd Schmidt
On 11/29/2013 02:05 PM, Kirill Yukhin wrote: On 29 Nov 13:17, Bernd Schmidt wrote: 5. There's a new DECL_TARGET which refers to this list of target machines. It's set when creating a child function from e.g. #pragma acc parallel Actually, I do not understand, what term `target machine' means

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Jakub Jelinek
On Fri, Nov 29, 2013 at 01:36:48PM +0100, Richard Biener wrote: Thoughts, comments? Does anyone have a good name for these accelerator targets or output targets, something that avoids the overloaded word target (I was thinking destination machine maybe)? I think offload is best word here.

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Jakub Jelinek
On Fri, Nov 29, 2013 at 01:17:56PM +0100, Bernd Schmidt wrote: We've been working on similar patches for our OpenACC project. The goal is to have functions generated during omp-low that will ultimately execute on a ptx target, write them out using LTO infrastructure and read them back in using

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Bernd Schmidt
On 11/29/2013 04:16 PM, Jakub Jelinek wrote: As you want to dump the GIMPLE IL right out of ~ IPA stage, it should in theory be target independent, so it is undesirable to emit it several times for each offloading target. That's not what happens. It's just partitioned into disjoint sets, one

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Jakub Jelinek
On Fri, Nov 29, 2013 at 05:57:25PM +0100, Bernd Schmidt wrote: On 11/29/2013 04:16 PM, Jakub Jelinek wrote: As you want to dump the GIMPLE IL right out of ~ IPA stage, it should in theory be target independent, so it is undesirable to emit it several times for each offloading target.

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Bernd Schmidt
On 11/29/2013 06:03 PM, Jakub Jelinek wrote: On Fri, Nov 29, 2013 at 05:57:25PM +0100, Bernd Schmidt wrote: On 11/29/2013 04:16 PM, Jakub Jelinek wrote: As you want to dump the GIMPLE IL right out of ~ IPA stage, it should in theory be target independent, so it is undesirable to emit it

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-29 Thread Jakub Jelinek
On Fri, Nov 29, 2013 at 06:07:38PM +0100, Bernd Schmidt wrote: By what mechanism do you choose? This is unclear to me from what I've seen. Does this involve user action, and what's the advantage of doing it this way? See the 3 threads I've mentioned. The compiler would know the list of

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-20 Thread Richard Biener
On Tue, Nov 19, 2013 at 10:58 AM, Ilya Tocar tocarip.in...@gmail.com wrote: On 14 Nov 11:27, Richard Biener wrote: + /* Set when symbol needs to be dumped for lto/offloading. */ + unsigned need_dump : 1; + That's very non-descriptive. What's offloading? But yes, something like this

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-20 Thread Jakub Jelinek
On Wed, Nov 20, 2013 at 10:34:30AM +0100, Richard Biener wrote: On Tue, Nov 19, 2013 at 10:58 AM, Ilya Tocar tocarip.in...@gmail.com wrote: On 14 Nov 11:27, Richard Biener wrote: + /* Set when symbol needs to be dumped for lto/offloading. */ + unsigned need_dump : 1; + That's

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-19 Thread Ilya Tocar
On 14 Nov 11:27, Richard Biener wrote: + /* Set when symbol needs to be dumped for lto/offloading. */ + unsigned need_dump : 1; + That's very non-descriptive. What's offloading? But yes, something like this is what I was asking for. I've changed it into: Set when symbol needs to be

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-14 Thread Ilya Tocar
On 18 Oct 13:30, Richard Biener wrote: Certainly better than the first version. Jakub should decide for the branch and eventually Honza for the merge to trunk. It still looks somewhat hackish, but I suppose that's because we don't have a LTO-state object where we can encapsulate all this.

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-11-14 Thread Richard Biener
On Thu, Nov 14, 2013 at 10:52 AM, Ilya Tocar tocarip.in...@gmail.com wrote: On 18 Oct 13:30, Richard Biener wrote: Certainly better than the first version. Jakub should decide for the branch and eventually Honza for the merge to trunk. It still looks somewhat hackish, but I suppose that's

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-10-18 Thread Richard Biener
On Thu, Oct 3, 2013 at 6:05 PM, Ilya Tocar tocarip.in...@gmail.com wrote: On 26 Sep 21:21, Ilya Tocar wrote: On 25 Sep 15:48, Richard Biener wrote: On Wed, Sep 25, 2013 at 3:29 PM, Ilya Tocar tocarip.in...@gmail.com wrote: On 24 Sep 11:02, Richard Biener wrote: On Mon, Sep 23, 2013 at

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-10-17 Thread Ilya Tocar
Ping. On 09 Oct 19:12, Ilya Tocar wrote: Ping. On 03 Oct 20:05, Ilya Tocar wrote: On 26 Sep 21:21, Ilya Tocar wrote: On 25 Sep 15:48, Richard Biener wrote: On Wed, Sep 25, 2013 at 3:29 PM, Ilya Tocar tocarip.in...@gmail.com wrote: On 24 Sep 11:02, Richard Biener wrote:

Re: Ping Re: [gomp4] Dumping gimple for offload.

2013-10-09 Thread Ilya Tocar
Ping. On 03 Oct 20:05, Ilya Tocar wrote: On 26 Sep 21:21, Ilya Tocar wrote: On 25 Sep 15:48, Richard Biener wrote: On Wed, Sep 25, 2013 at 3:29 PM, Ilya Tocar tocarip.in...@gmail.com wrote: On 24 Sep 11:02, Richard Biener wrote: On Mon, Sep 23, 2013 at 3:29 PM, Ilya Tocar