Hey there, guys! I've added an intrinsic to an input code using an LLVM pass. I'm able to see the intrinsic call, yet I can't figure out how to compile the code to my target architecture (x86_64). I'm running the following command: clang++ $(llvm-config --ldflags --libs all) ff.s -o foo But the linker complains about undefined references: /tmp/ff-2ada42.o: In function `fact(unsigned int)': /home/rubens/Desktop/ff.cpp:9: undefined reference to `llvm.x86.sse3.mwait.i32.i32.i32' /tmp/ff-2ada42.o: In function `fib(unsigned int)': /home/rubens/Desktop/ff.cpp:16: undefined reference to `llvm.x86.sse3.mwait.i32.i32.i32' /home/rubens/Desktop/ff.cpp:16: undefined reference to `llvm.x86.sse3.mwait.i32.i32.i32' /home/rubens/Desktop/ff.cpp:16: undefined reference to `llvm.x86.sse3.mwait.i32.i32.i32' Despite using ldflags from llvm-config, the compilation does not proceed. Any ideas on what should be done for the code to compile properly? To generate the assembly code, I've done the following: # Generating optimized code clang++ $(llvm-config --cxxflags) -emit-llvm -c ff.cpp -o ff.bc opt ff.bc -load path/to/mypass.so -mypass > opt_ff.bc # Generating assembly llc opt_ff.bc -o ff.s I'm currently using llvm version 3.4.2; clang version 3.4.2 (tags/RELEASE_34/dot2-final); gcc version 4.9.2 (GCC); and Linux 3.17.2-1-ARCH x86_64. Regards! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20141219/7dd7dc85/attachment.html>