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Well, I tried the command line given by you and I get the following error clang++ nbody.kernel.cu -Xclang -fcuda-is-device -I/home/upitamba/llvm-3.2.src/tools/clang/test/SemaCUDA/ -Xclang -triple -Xclang nvptx64 -Xclang -target-cpu -Xclang sm_10 -S fatal error: error in backend: Cannot select: 0x334a870: v4f32 = NVPTXISD::MoveParam 0x334a770 [ORD=1] [ID=22] 0x334a770: v4f32 = TargetExternalSymbol'.PARAM0' [ID=1] In function:...

...I'm now hitting a new issue. I'll get the fix in soon. On Fri, Mar 22, 2013 at 1:08 AM, upit <uday_pitambare at yahoo.com> wrote: > Well, I tried the command line given by you and I get the following error > > clang++ nbody.kernel.cu -Xclang -fcuda-is-device > -I/home/upitamba/llvm-3.2.src/tools/clang/test/SemaCUDA/ -Xclang -triple > -Xclang nvptx64 -Xclang -target-cpu -Xclang sm_10 -S > > fatal error: error in backend: Cannot select: 0x334a870: v4f32 = > NVPTXISD::MoveParam 0x334a770 [ORD=1] [ID=22] > 0x334a770: v4f32 = TargetExternalSymbol'.PARAM0&...

Not really. Clang does not have a way to annotate device vs. kernel functions in C/C++ mode. You're probably better off trying to use OpenCL or CUDA mode in clang. In the clang unit tests, there is a cuda.h header that provides very basic support for these keywords: tests/SemaCUDA/cuda.h If you compile as CUDA (use .cu extension, or "-x cuda") and use this header, you will have

Thanks a lot Justin, I will remove the toolkit header. Just one last question..(maybe ;) ) If I do away with toolkit headers it says unknown type name '__device__'. Does this function qualifier have an alternative ? or I can just do away with ? -- View this message in context: http://llvm.1065342.n5.nabble.com/UNREACHABLE-executed-error-while-trying-to-generate-PTX-tp56026p56093.html