similar to: [LLVMdev] mips simd

If you apply, please mention me, there is a referral fee. :) _*Software Design Engineer -- Compilers*_ *Opportunity* MIPS SW Team is responsible for enhancement, development and support of the development tools for MIPS processors. You will have some or all of the following responsibilities working as a part of a team: * researching and implementing new techniques and optimisations

We are considering running clang format on the whole Mips target. Is there any rule against this? Is there any good argument against doing this even if there is no rule against it? TIA. Reed

In case anyone is interested.... We don't need to compile llvm/clang using gcc anymore for the building of mips hosted llvm compilers. We build a linux mips hosted compiler starting with llvm/clang on x86 linux using the normal configure scripts and then can use that resulting compiler to build further llvm/clang native compilers on the mips linux host. The cross compiler and native

The problem is that everything about the mips32 and micro mips 16 instruction is the same, aside from the encoding in to binary. Seems like maybe we need to extend the notion of an instruction so that it can have alternate encodings depending on subtarget. On 09/05/2012 08:28 PM, Jim Grosbach wrote: > The instructions are defined by their encodings, not the assembly syntax. You want

Geting a seg fault. Have not investigted the cause. rkotler at mipsswbrd002:~/richard$ tar vfxz ~/Downloads/ellcc-mips-linux-2014-Mar-24-07-32-26.tgz rkotler at mipsswbrd002:~/richard/ellcc/bin$ gdb ./ecc GNU gdb (GDB) 7.4.1-debian Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are

Hello all, I am currently working on building a portable SIMD programming model(SIMD within a register) for various platforms, like x86, ARM and so on. I know that LLVM supports SIMD programming on many architectures, so I am thinking of using LLVM to help build this model but I not quite sure whether LLVM can help. The following describes the details of the model and also my current approach

Dan Gohman <dan433584 at gmail.com> writes: > And, in part because a popular trend seems to be to have SIMD units > which don't trap or raise exception flags on arithmetic and which don't > go faster when predicated, such that there's no  reason to predicate > anything except stores and occasionally loads. On these architectures, > simply having intrinsics for

i changed my code to following; #pragma omp simd for (int i=0; i<size; ++i) { a[i]=2; b[i]=3; c[i]=4; c[i]= a[i] + b[i]; printf("c value %f",c[i]); } still no effect of omp simd? On Sun, Dec 31, 2017 at 12:26 AM, Craig Topper <craig.topper at gmail.com> wrote: > The for loop has no effect on the observable behavior of

My understanding was that micro mips was similar to Thumb2, in that the smaller encodings have constraints on which registers can be read/written, because of the narrowing of the register fields in the encoding. If that's the case, then it definitely makes sense to model the micro mips instruction set as distinct from the mips32 instruction set, in basically the same way that Thumb2 is done.

hello, i am trying to optimize omp simd loop as follows int main(int argc, char **argv) { const int size = 1000000; float a[size], b[size],c[size]; #pragma omp simd for (int i=0; i<size; ++i) { c[i]= a[i] + b[i]; } return 0; } i run it using the following command; g++ -O0 --std=c++14 -fopenmp-simd lab.cpp -Iinclude -S -o lab.s

On Sat, Aug 24, 2013 at 2:15 AM, Reed Kotler <rkotler at mips.com> wrote: > Hi Jun, > > Are you using the Mips compiler or working on it? > > yes, i am looking at its code to understand this architecture. thanks. Jun > > On 08/22/2013 11:12 PM, Jun Koi wrote: > >> hi, >> >> there are two arrays named DecoderTable32[] and DecoderTable16[] that

Hi, I've done work on predicated SIMD representations for LLVM. If you search through the archives, you may find my "applymask" proposal, which is an attempt at representing predication in a very comprehensive way. I've since stopped pushing the proposal in part because Larrabee's changing fortunes led to a decline of interest at the time, in part because the proposal

Micro mips is really 100% .s compatible with mips32. There are no register field size constraints and such. It's a strict superset of mips32. For the gcc port, the assembler is basically the only thing we changed. The gcc port was just adding the ".micromips" directive to the .s file and maybe some tiny driver work. That is the quandary. The entire .td file would have to be

Hi Kevin, > *Background* > Almost modern processor families support SIMD instruction sets but the > instruction set designs for each platform have different combinations of > operations. The portable SIMD here is to make an uniform system of SIMD > operations at all power-of-2 field widths. > For example, for simd_add on SSE2, I want to have all the following operations >

Right. LLVM supports the transformation from unsupported vector type to supported vector type or even scalar types. According to the LLVM's documentation, LLVM has two ways of doing the transformation, one is promoting the small vector type to larger vector type, the other is breaking up the large vector type into smaller ones. But I am wondering, how good the transformation will be in

> On 6 Jan 2018, at 00:26, Linchuan Chen via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > Hi everyone, > > I'm quite new to LLVM, but am working on a project that might need to generate some SIMD code using LLVM. The SIMD code will be using INTEL MIC intrinsics and I'm not sure about the > steps and tool set that I need to use to generate those. > > I

The instructions are defined by their encodings, not the assembly syntax. You want separate instruction definitions for the different encodings and select. Between them in the assembler via sub target features. See ARM handling of thumb vs thumb2 vs arm for examples of how to do this. On Sep 5, 2012, at 6:59 PM, reed kotler <rkotler at mips.com> wrote: > The micro mips processor

The micro mips processor assembly language is basically 100% the same as mips32/mips64. There are some assembler directives you add but for a base port, but that is all you need to do. However, the binary instruction encoding is entirely different. There are a combination of 16 and 32 bit instruction encodings. The question is, what's the best way to handle this? Extending tablegen ?

Hi everyone, I'm quite new to LLVM, but am working on a project that might need to generate some SIMD code using LLVM. The SIMD code will be using INTEL MIC intrinsics and I'm not sure about the steps and tool set that I need to use to generate those. I also have a confusion on the following problems: 1. Do people usually generate SIMD code at source code level, using __m512?

I even tried following; int main(int argc, char **argv) { const int size = 1000000; float a[size], b[size],c[size]; #pragma omp simd for (int i=0; i<size; ++i) { a[i]=2; b[i]=3; c[i]=4; c[i]= a[i] + b[i]; } return 0; } but the output with and without openmp simd is same. why is that so? On Sun, Dec 31, 2017 at 12:01