similar to: [LLVMdev] compiler controlled data Prefetching

Alexandra, I'm not sure what you mean by "replace", but I have code that does this to insert prefetches: Type *I8Ptr = Type::getInt8PtrTy((*I)->getContext(), PtrAddrSpace); Value *PrefPtrValue = ... IRBuilder<> Builder(MemI); Module *M = (*I)->getParent()->getParent(); Type *I32 = Type::getInt32Ty((*I)->getContext()); Value

On Mar 2, 2012, at 9:01 AM, Hal Finkel <hfinkel at anl.gov> wrote: > Hello, > > I am interested in writing an analysis pass that looks at the stride > used for loads in a loop and passes that information down so that it > can be used by the instruction scheduler. The reason is that if the > load stride is greater than the cache line size, then I would expect > the load

Sorry for not responding earlier. On 05/20/2016 03:05 PM, Roman Gareev wrote: > Thank you very much for the advices! I could probably try to avoid > using of nonhardware prefetching in the project, if Tobias doesn’t > disagree with it. My understanding is that prefetching isn’t used > explicitly in [1] and, according to [2], in some cases 90% of the > turbo boost peak of the

Hello, Can anyone please guide me how can I replace a load instruction with a prefetch. I was looking at the intrinsic creation methods of the IRBuilder, but I can only find functions corresponding to memset, memcpy and memmove intrinsics, not for prefetching. Also, I target x86-64 architectures. Is it sufficient to insert a call to the intrinsic in the LLVM IR to have the corresponding prefetch

Hi, Thanks, I am targetting x86 architecture. -Usha On Mon, Sep 22, 2014 at 10:39 PM, Hal Finkel <hfinkel at anl.gov> wrote: > ----- Original Message ----- > > From: "usha shau" <ushashau1 at gmail.com> > > To: llvmdev at cs.uiuc.edu > > Sent: Monday, September 22, 2014 7:01:20 AM > > Subject: [LLVMdev] Use of llvm.prefetch intrinsic for

Hello, I am interested in writing an analysis pass that looks at the stride used for loads in a loop and passes that information down so that it can be used by the instruction scheduler. The reason is that if the load stride is greater than the cache line size, then I would expect the load to always miss the cache, and, as a result, the scheduler should use a much larger effective latency when

HI, Has anyone ever implemented instruction prefetching with llvm? If so, on which architectures? -- Thanks, Aasheesh -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20121212/0fa88f39/attachment.html>

Hi, I am new to LLVM and using it for my project where I want to perform software prefetching of code blocks. I am not able to use the llvm.prefetch instruction to fetch a block of code in instruction cache. The LangRef <http://llvm.org/docs/LangRef.html#llvm-prefetch-intrinsic>manual mentions that giving last argument as '0' performs prefetch on instruction cache. However, I get

On Wed, Dec 12, 2012 at 07:09:45PM -0500, aasheesh kolli wrote: > HI, > > Has anyone ever implemented instruction prefetching with llvm? If so, on which > architectures? Grep prefetch in lib/Target/* will show you ARM, X86, and PPC seems have implemented prefetch instruction. LLVM provides prefetch intrinsic [1] so that you can insert it in LLVM IR as a hint to code generator. I

On 12/19/2017 03:57 PM, Manish Jain wrote: > > > On 12/20/17 01:45, m.roth at 5-cent.us wrote: >> Manish Jain wrote: >>> >>> On 12/19/17 22:11, Manish Jain wrote: >>>> On 12/19/17 22:07, Jonathan Billings wrote: >>>>> On Tue, Dec 19, 2017 at 02:54:36PM +0000, Manish Jain wrote: >>>>>> I uninstalled the old TV, and

On 12/19/2017 02:57 PM, Manish Jain wrote: > > > On 12/20/17 01:45, m.roth at 5-cent.us wrote: >> Manish Jain wrote: >>> >>> On 12/19/17 22:11, Manish Jain wrote: >>>> On 12/19/17 22:07, Jonathan Billings wrote: >>>>> On Tue, Dec 19, 2017 at 02:54:36PM +0000, Manish Jain wrote: >>>>>> I uninstalled the old TV, and

Am Mo., 5. Nov. 2018 um 10:26 Uhr schrieb David Greene <dag at cray.com>: > Yes, I agree the terminology is confusing. I used the term "stream" in > the sense of stream processing (https://en.wikipedia.org/wiki/Stream_processing). > The programming model is very different, of course, but the idea of a > stream of data that is acted upon and then essentially discarded

Hi, In the early stages of deciding how to try and develop this environment, I looked at all the protocols that could be used. SIP was chosen just because it seemed to me that it was the most widely used protocol. I believe IAX is a new protocol with a little less documentation and examples. The good thing about this Jain-sip-phone is that it saves a lot of time since many of the important

Manish Jain wrote: > > On 12/19/17 22:11, Manish Jain wrote: >> On 12/19/17 22:07, Jonathan Billings wrote: >>> On Tue, Dec 19, 2017 at 02:54:36PM +0000, Manish Jain wrote: >>>> I uninstalled the old TV, and installed the version you indicated, but >>>> I >>>> get nothing at all: >>>> >>>> /home/bourne # teamviewer

Darrick J. Wong would like to nominate Anand Jain to help more on btrfs testing part (tests/btrfs and common/btrfs). He would like to be a co-maintainer of btrfs part, will help to review and test fstests btrfs related patches, and I might merge from him if there's big patchset. So CC him besides send to fstests@ list, when you have a btrfs fstests patch. Signed-off-by: Zorro Lang <zlang

Hi, I am trying to educate myself on prefetching/readahead algorithm for Lustre''s read. For a starter I only have two simple questions. 1 - Does Lustre detect linear or random I/O pattern or it always triggers readahead? 2 - If readahead is triggered, how many pages are read in addition to what is necessary? Thanks, Arifa.

Signed-off-by: Anand Jain <anand.jain@oracle.com> --- mkfs.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/mkfs.c b/mkfs.c index de1beed..0843600 100644 --- a/mkfs.c +++ b/mkfs.c @@ -1196,8 +1196,7 @@ static void process_fs_features(u64 flags) for (i = 0; i < ARRAY_SIZE(mkfs_features); i++) { if (flags & mkfs_features[i].flag) { - fprintf(stderr,

On Fri, 02 Mar 2012 13:49:48 -0800 Andrew Trick <atrick at apple.com> wrote: > On Mar 2, 2012, at 9:01 AM, Hal Finkel <hfinkel at anl.gov> wrote: > > > Hello, > > > > I am interested in writing an analysis pass that looks at the stride > > used for loads in a loop and passes that information down so that it > > can be used by the instruction

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On 12/19/17 19:55, Johnny Hughes wrote: > On 12/19/2017 07:16 AM, Manish Jain wrote: >> Hi, >> >> I am writing a book about Unix (Linux / FreeBSD) and my book needs >> documentation for TeamViewer13 running under Centos 7 (64-bit). >> >> Unfortunately, running TeamViewer does not get me a GUI -- the install >> went smoothly and teamviewerd daemon is