search for: vector

The following series adds initial vector support for PowerPC64. On POWER9, flac --best is about 3.3x faster. Amitay Isaacs (2): Add m4 macro to check for C __attribute__ features Check if compiler supports target attribute on ppc64 Anton Blanchard (5): configure.ac: Remove SPE detection code configure.ac: Add VSX enable/disable...

RISC-V is an open and free instruction set architecture (ISA) used in numerous domains in industry and research. The vector extension (short: 'V') supplements the basic ISA with support for data parallel computations. This RFC sketches a strategy for targeting this instruction set extension in LLVM. Some but not all of what is proposed here has already been implemented out of tree. It is explicitly not proposed...

Hello, I'm new on this list. First of all, thank you to all the developers of this great project! At the moment there is only an application that keeps me on both macos and windows, its name is PWGL a free environment for computer assisted composition in openGL. (http://www2.siba.fi/PWGL/) I'm running Ubuntu 8.04 and wine 0.9.59. I have to say that I also installed vcrun2005 and

...o add SVE here and this overlaps quite a bit with their goals. -eric On Wed, Apr 11, 2018 at 2:45 AM Robin Kruppe via llvm-dev < llvm-dev at lists.llvm.org> wrote: > RISC-V is an open and free instruction set architecture (ISA) used in > numerous domains in industry and research. The vector extension (short: > 'V') supplements the basic ISA with support for data parallel computations. > This RFC sketches a strategy for targeting this instruction set extension > in LLVM. > > Some but not all of what is proposed here has already been implemented out > of tree....

On 13 April 2018 at 16:52, Robin Kruppe <robin.kruppe at gmail.com> wrote: > On 13 April 2018 at 14:37, Graham Hunter <Graham.Hunter at arm.com> wrote: > >> Hi, >> >> Nice to see another group tackling length agnostic vectorization :) >> >> I'm still reading through all the details, but I do have one initial >> question related to the vector type; why not use the same mechanism Arm is >> proposing for SVE? >> >> We chose the format "<n x m x <ty>>" to repres...

As some of you may know, I committed my basic-block autovectorization pass a few days ago. I encourage anyone interested to try it out (pass -vectorize to opt or -mllvm -vectorize to clang) and provide feedback. Especially in combination with -unroll-allow-partial, I have observed some significant benchmark speedups, but, I have also observed some significant...

Hello. I am trying to vectorize a CSR SpMV (sparse matrix vector multiplication) procedure but the LLVM loop vectorizer is not able to handle such code. I am using cland and llvm version 3.4 (on Ubuntu 12.10). I use the -fvectorize option with clang and -loop-vectorize with opt-3.4 . The CSR SpMV function is inspir...

On 5/28/19 3:31 PM, Philip Reames via cfe-dev wrote: > I generally like the idea of having support in IR for vectorization of > custom functions.  I have several use cases which would benefit from this. > > I'd suggest a couple of reframings to the IR representation though. > > First, this should probably be specified as metadata/attribute on a > function declaration.  Allowing the callsite...

Dear all, This RFC is a proposal to provide auto-vectorization functionality for user provided vector functions. The proposal is a modification of an RFC that I have sent out a couple of months ago, with the title `[RFC] Re-implementing -fveclib with OpenMP` (see http://lists.llvm.org/pipermail/llvm-dev/2018-December/128426.html). The previous RFC is t...

...w On 13 April 2018 at 16:52, Robin Kruppe <robin.kruppe at gmail.com<mailto:robin.kruppe at gmail.com>> wrote: On 13 April 2018 at 14:37, Graham Hunter <Graham.Hunter at arm.com<mailto:Graham.Hunter at arm.com>> wrote: Hi, Nice to see another group tackling length agnostic vectorization :) I'm still reading through all the details, but I do have one initial question related to the vector type; why not use the same mechanism Arm is proposing for SVE? We chose the format "<n x m x <ty>>" to represent two crucial concepts: arbitrary length vectors w...

Is there some (much) more efficient way to do this? VECTOR=c(3,2,4,5,5,3,3,5,1,6,6); NEWVECTOR=VECTOR[1]; for(i in 1:(length(VECTOR)-1)) { if((identical(VECTOR[i], VECTOR[i+1]))==FALSE){ NEWVECTOR=c(NEWVECTOR,VECTOR[i+1])} } > VECTOR [1] 3 2 4 5 5 3 3 5 1 6 6 > NEWVECTOR [1] 3 2 4 5 3 5 1 6 _______________________________ Atte Tenkanen Univers...

Proposal for extending the Loop Vectorizer to handle Outer Loops ================================================================ Goal: ----- We propose to extend the innermost Loop Vectorizer to also handle outerloops (cf.[1]). Our aim is to best leverage the efforts already invested in the existing innermost Loop Vectorizer rather...

Proposal for function vectorization and loop vectorization with function calls ============================================================================== Intel Corporation (3/2/2016) This is a proposal for an initial work towards Clang and LLVM implementation of vectorizing a function annotated with OpenMP 4.5's &quo...

...-c /home/jayfoad2/git/llvm-project/llvm/lib/Support/SourceMgr.cpp In file included from /usr/include/c++/8/algorithm:62, from /home/jayfoad2/git/llvm-project/llvm/include/llvm/Support/MathExtras.h:18, from /home/jayfoad2/git/llvm-project/llvm/include/llvm/ADT/SmallVector.h:19, from /home/jayfoad2/git/llvm-project/llvm/include/llvm/ADT/STLExtras.h:20, from /home/jayfoad2/git/llvm-project/llvm/include/llvm/ADT/StringRef.h:12, from /home/jayfoad2/git/llvm-project/llvm/include/llvm/ADT/StringMap.h:16,...

Hello. Mikhail, with the more recent version of the LoopVectorize.cpp code (retrieved at the beginning of July 2016) I ran the following piece of C code: void foo(long *A, long *B, long *C, long N) { for (long i = 0; i < N; ++i) { C[i] = A[i] + B[i]; } } The vectorized LLVM program I obtain contains 2 vector.body bloc...

On 5/29/19 1:52 PM, Philip Reames wrote: > On 5/28/19 7:55 PM, Finkel, Hal J. wrote: >> On 5/28/19 3:31 PM, Philip Reames via cfe-dev wrote: >>> I generally like the idea of having support in IR for vectorization of >>> custom functions.  I have several use cases which would benefit from this. >>> >>> I'd suggest a couple of reframings to the IR representation though. >>> >>> First, this should probably be specified as metadata/attribute on a >>&...

...Support/SourceMgr.cpp >> In file included from /usr/include/c++/8/algorithm:62, >> from >> /home/jayfoad2/git/llvm-project/llvm/include/llvm/Support/MathExtras.h:18, >> from >> /home/jayfoad2/git/llvm-project/llvm/include/llvm/ADT/SmallVector.h:19, >> from >> /home/jayfoad2/git/llvm-project/llvm/include/llvm/ADT/STLExtras.h:20, >> from >> /home/jayfoad2/git/llvm-project/llvm/include/llvm/ADT/StringRef.h:12, >> from >> /home/jayfoad2/git/llvm-project/l...

Carl-Philip, The reason that this does not vectorize is that it cannot vectorize the stores; this leaves only the mul-add chains (and some chains with loads), and they only have a depth of 2 (the threshold is 6). If you give clang -mllvm -bb-vectorize-req-chain-depth=2 then it will vectorize. The reason the heuristic has such a large default valu...

Hi Michael. Thank for your feedback and questions/comments. See below. >>>>>I think it should be possible to vectorize such loop even without openmp clauses. We just need to gather a vector value from several scalar calls, and vectorizer already knows how to do that, we just need not to bail out early. Dealing with calls is tricky, but in this case we have the pragma, so we can assume it should be fine. What do...

Hello, Is it intended that is.vector(...) and is(..., "vector") do not always give identical results? is.vector() works as documented ('is.vector' returns 'FALSE' if 'x' has any attributes except names.) Thus, A <- array(1:2, 1:2) M <- diag(2) is.vector(M) # FALSE, as documented # and is.vect...