similar to: [LLVMdev] [NVPTX] CUDA inline PTX asm definitions scoping "{" "}" is broken

Dmitry, You might be better served by filing this as a bug (http://llvm.org/bugs/). Please include a test case and the steps to reproduce (i.e., what you've provided below). Chad On Jul 10, 2012, at 3:15 PM, Dmitry N. Mikushin wrote: > Hi, > > Looks like "{" and "}" are lost when trying to use the combination of Clang and NVPTX, which may result into clash of

Yes, sure, good idea, because might be also Clang-related. http://llvm.org/bugs/show_bug.cgi?id=13322 2012/7/11 Chad Rosier <mcrosier at apple.com> > Dmitry, > You might be better served by filing this as a bug (http://llvm.org/bugs/). > Please include a test case and the steps to reproduce (i.e., what you've > provided below). > > Chad > > On Jul 10, 2012,

I'm building this with llvm-c, and accessing these intrinsics via calling the intrinsic as if it were a function. class F_SREG<string OpStr, NVPTXRegClass regclassOut, Intrinsic IntOp> : NVPTXInst<(outs regclassOut:$dst), (ins), OpStr, [(set regclassOut:$dst, (IntOp))]>; def INT_PTX_SREG_TID_X : F_SREG<"mov.u32 \t$dst, %tid.x;",

Hi Timothy, I'm not sure what you mean by this working for other intrinsics, but in this case, I think you want the intrinsic name llvm.nvvm.read.ptx.sreg.tid.x. For me, this looks like: %x = call i32 @llvm.nvvm.read.ptx.sreg.tid.x() Pete On Fri, Mar 1, 2013 at 11:51 AM, Timothy Baldridge <tbaldridge at gmail.com> wrote: > I'm building this with llvm-c, and accessing these

Ok, as I said, the most precise way to figure out what's wrong is to emit LLVM IR first (use clang -emit-llvm ...) and check out how it differs from working examples, for instance, nvptx regression tests. ----- Original message ----- > I'm building this with llvm-c, and accessing these intrinsics via calling > the intrinsic as if it were a function. > > class F_SREG<string

The identifier INT_PTX_SREG_TID_X is the name of an instruction as the back-end sees it, and has very little to do with the name you should use in your IR. Your best bet is to look at the include/llvm/IR/IntrinsicsNVVM.td file and see the definitions for each intrinsic. Then, the name mapping is just: int_foo_bar -> llvm.foo.bar() int_ prefix becomes llvm., and all underscores turn into

I've written a compiler that outputs PTX code, the result seems fairly reasonable, but I'm not sure the intrinsics are getting compiled correctly. In addition, when I try load the module using CUDA, I get an error: CUDA_ERROR_NO_BINARY_FOR_GPU. I'm running this on a 2012 MBP with a 640M GPU. PTX Code (for a mandelbrot calculation): // // Generated by LLVM NVPTX Back-End //

Hi, I needed to compile a cuda source file (say, a.cu) into IR (a.bc), and then merge a.bc with another bitcode file (b.bc, compiled from b.cu). So I used *llvm-link a.bc b.bc -o c.bc* However, I noticed that an internal function '* _ZL21__nvvm_reflect_anchorv() *' is defined in both a.bc & b.bc, and when merging these two files, one of the two definitions was renamed to

Timothy, Those calls to compute grid intrinsics are definitely wrong. In ptx code they should end up into reading special registers, rather than function calls. Try to take some working example and figure out the LLVM IR differences between it and the result of your compiler. - D. ----- Original message ----- > I've written a compiler that outputs PTX code, the result seems fairly >

Yeah, '.' is the direct reason for the ptxas failure here. I'm curious, however, about what the purpose of nvvm_reflect_anchorv() is here, and why does the front-end always generate this function? Since the current PTX emission doesn't mangle dots, it would be a reasonable workaround for me to prevent the front-end from generating this function in the first place. Is there any

David's change makes nvvm_reflect_anchor unnecessary. The issue with dots in names generated by llvm still needs to be fixed. On Apr 9, 2016 8:32 AM, "Jingyue Wu" <jingyue at google.com> wrote: > Artem, > > With David's http://reviews.llvm.org/rL265060, do you think > __nvvm_reflect_anchor is still necessary? > > On Fri, Apr 8, 2016 at 9:37 AM, Yuanfeng

Dear LLVM NVPTX maintainers, Just to have the issue recorded, I don't know how important it is: clang generates linkonce_odr out of __inline__, and NVPTX generates .weak out of linkonce_odr (how it happens - a big question, btw, because I can't find anything related in NVPTX asm printer - does it chain to some other printer?), and finally ptxas (both 4.2 and 5) fails to compile it to

Dear colleagues, I'm looking if we can replace nvopencc with LLVM NVPTX in our project. It turns NVPTX won't work with the code nvopencc can handle (please see the log below). So are atomic intrinsics not supported or am I doing call in a wrong way? Thanks, - Dima. SOURCE ======== dmikushin at hp2:~> cat kernelgen_monitor.ll ; ModuleID =

On Tue, Jun 12, 2012 at 6:11 PM, Dmitry N. Mikushin <maemarcus at gmail.com>wrote: > Dear LLVM NVPTX maintainers, > > Just to have the issue recorded, I don't know how important it is: > > clang generates linkonce_odr out of __inline__, and NVPTX generates .weak > out of linkonce_odr (how it happens - a big question, btw, because I can't > find anything related

Hi everybody, As you know, Cuda/NVPTX target has very limited support of the debug info in Clang/LLVM. Currently, LLVM supports only emission of the line numbers debug info. This is caused by limitations of the Cuda/NVPTX codegen. Clang/LLVM translates the source code to LLVM IR, which is then lowered to PTX (parallel thread execution) intermediate file. This PTX file represents special kind of

Dear NVPTX community, PTXAS fails to compile the ptx code generated by NVPTX. Is it an issue of backend or an issue of PTXAS or a known reasonable restriction? Thanks, - Dima. > cat test.ll ; ModuleID = '__kernelgen_main_module' target datalayout = "e-p:64:64-i64:64:64-f64:64:64-n1:8:16:32:64" target triple = "ptx64-unknown-unknown" %struct.__st_parameter_dt.0.4

06.11.2017 14:56, Robinson, Paul пишет: >> Hi everybody, >> As you know, Cuda/NVPTX target has very limited support of the debug >> info in Clang/LLVM. Currently, LLVM supports only emission of the line >> numbers debug info. >> This is caused by limitations of the Cuda/NVPTX codegen. Clang/LLVM >> translates the source code to LLVM IR, which is then lowered to

Nobody blames ptxas. I'm not saying that these are the troubles, I'm just saying that it has some features and we have some problems to be solved. But lack of labels, label arithmetics in DWARF sections is the real problem, because LLVM actively uses it in DWARF sections Best regards, Alexey Bataev 8 нояб. 2017 г., в 5:35, Madhur Amilkanthwar <madhur13490 at

Hi, My goal is to use Clang/LLVM/libclc to compile an OpenCL kernel and eventually generate a PTX code. I already did this but I am not sure if the PTX code I am generating is correct (is the one that is supposed to be generated). For example, currently, In OpenCL : get_global_id(0) translates to In LLVM : %call = tail call i32 @get_global_id(i32 0) which translates to In PTX:

> -----Original Message----- > From: Dmitry N. Mikushin [mailto:maemarcus at gmail.com] > Sent: Wednesday, May 16, 2012 5:44 AM > To: LLVM-Dev > Cc: Justin Holewinski > Subject: NVPTX: __iAtomicCAS support ? > > Dear colleagues, > > I'm looking if we can replace nvopencc with LLVM NVPTX in our project. > It turns NVPTX won't work with the code nvopencc