similar to: rsync prevent destination only new folders but need new files

I updated to the latest revision and now llvm does not build and quits cmake with CMake Error at cmake/modules/LLVMProcessSources.cmake:83 (message): Found unknown source file ../llvm-revec/lib/CodeGen/MachineFunctionAnalysis.cpp Please update ../llvm-revec/lib/CodeGen/CMakeLists.txt Thanks On Sat, Sep 3, 2016 at 2:09 AM, Craig Topper <craig.topper at gmail.com> wrote: >

I isolated the LLVM IR and the X86 instructions emitted for the function and are attached herewith and it is clearly emitting vector instructions. I am having a hard time figuring out where the vector instructions are formulated. For sure SLP and Loop vectorizer is not doing anything. On Mon, Aug 21, 2017 at 11:56 AM, Craig Topper <craig.topper at gmail.com> wrote: > The X86 backend

Hi all, The attached LLVM assembly file fails to generate x86 code when compiled using llc. compilation command - ../llvm-build/bin/llc -filetype=asm -march=x86-64 -mcpu=core-avx2 ex4.ll The error message is, LLVM ERROR: Cannot select: t95: v8f32 = X86ISD::SUBV_BROADCAST t17 t17: v4f32,ch = load<LD16[%scevgep](tbaa=<0x4dbcd98>)> t0, t16, undef:i64 t16: i64 = add t2,

If I know for sure I am accessing 32 byte chunks at a time, how can I go about changing the alignment of @u? Should I use DataLayout's reset method? I couldn't find a method to change alignment of one global variable. Thanks On Tue, Oct 3, 2017 at 6:34 PM, Matthias Braun <mbraun at apple.com> wrote: > The effective alignment is part of the load and store operations. Updating

If count > MAX_UINT-4 your loop loops indefinitely with an increment of 4, I think. On Thu, Oct 13, 2016 at 4:42 PM, Charith Mendis via llvm-dev < llvm-dev at lists.llvm.org> wrote: > So, I tried unrolling the following simple loop. > > int unroll(unsigned * a, unsigned * b, unsigned *c, unsigned count){ > > for(unsigned i=0; i<count; i++){ > > a[i] =

Thanks for the explanation. But I am a little confused with the following fact. Can't LLVM keep vectorizable_elements as a symbolic value and convert the loop to say; for(unsigned i = 0; i < vectorizable_elements ; i += 2){ //main loop } for(unsigned i=0 ; i < vectorizable_elements % 2; i++){ //fix up } Why does it have to reason about the range of vectorizable_elements? Even

What is the best way to change the alignment of global variables and allocated structures in LLVM during one of its optimization passes? For example, I want to change, @u = internal unnamed_addr global [5 x [65 x [65 x [65 x double]]]] zeroinitializer, align 16 to align to 32 bytes. How can this be accomplished so that all other references in the code accessing this structure are also

Hi all, Recently I compiled the attached .c file using Clang with "-mavx2 -mfma -m32 -O3" optimization flags. First I used -emit-llvm and inspected the LLVM IR and there are no vector instructions. Then I got the assembly output of the file in it I can clearly see vector instructions in it. Neither the SLPVectorizer or the LoopVectorizer is however doing any vectorization (also

How do you generate a SCEVAddRecExpr from a SCEV? It tried dyn_casting and it seems like that the SCEV returned by getSCEV is not a SCEVAddRecExpr. Thanks On Fri, Sep 30, 2016 at 4:16 PM, Friedman, Eli <efriedma at codeaurora.org> wrote: > On 9/30/2016 12:16 PM, Charith Mendis via llvm-dev wrote: > >> >> Hi all, >> >> What is the best way to get the symbolic

Hi all, What is the best way to get the symbolic expression for an address calculation in llvm specially when memory addresses are calculated within a loop. Use case: I want to know what loop induction variables are used for a particular address calculation and in what symbolic context. Thereby, I want to identify which stores and loads will be contiguous in memory if I unroll each of the

Hi all, Attached herewith is a fairly simple LLVM file (shuffle.ll) with lots of vector shuffles. When I use llc with -O3 -mcpu=core-avx2 the first shuffle sequence containing types of 128 wide gets reduced a single shuffle, where as the second shuffle sequence containing types of 256 wide doesn't get reduced to a single shuffle instruction in the resulting X86 code (Shuffle.s attached).

Hi all, Attached herewith is a simple vectorized function with loops performing a simple shuffle. I want all loops (inner and outer) to be unrolled by 2 and as such used -unroll-count=2 The inner loops(with k as the induction variable and having constant trip counts) unroll fully, but the outer loop with (j) fails to unroll. The llvm code is also attached with inner loops fully unrolled. To

Hi All, I saw on previous mail thread under topic *"exclude open file in backup with rsync (2006)"* That Rsync can't handle open files and it sends all files without checking whether they are open.I want to know whether still Rsync have this problem or if their any solution for this. I really need to check open files and I want to sync without open files. if their any way do this