thanks the code is at https://gist.github.com/williamtu/7e41392a34672d7b4574aee063ea4a3b
On Fri, Jan 6, 2017 at 1:21 PM, Brenden Blanco <[email protected]> wrote: > Yes, it would be helpful to share the code. > > On Fri, Jan 6, 2017 at 12:34 PM, William Tu via iovisor-dev > <[email protected]> wrote: >> >> Hi, >> >> I'm adding parser and extra map lookup into the xdp1_kern.c and >> encounter this LLVM error. My environment: >> clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final) >> LLVM version 4.0.0svn >> >> I think it might be related to bpf map access, if I comment out the >> map access code, then the problem goes away. Looking at similar error >> in bcc, I have no clue about how to debug this issue. >> https://github.com/iovisor/bcc/issues/220 >> https://github.com/iovisor/bcc/issues/237 >> I can share the code if it is more helpful. Any comments are appreciated! >> >> $ clang -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/5/include >> -I./arch/x86/include -I./arch/x86/include/generated/uapi >> -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi >> -I./include/uapi -I./include/generated/uapi -include >> ./include/linux/kconfig.h \ >> -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ >> -Wno-compare-distinct-pointer-types \ >> -Wno-gnu-variable-sized-type-not-at-end \ >> -Wno-address-of-packed-member -Wno-tautological-compare \ >> -O2 -emit-llvm -c /root/net-next/samples/bpf/xdp1_kern.c -o -| llc >> -march=bpf -filetype=obj -o /root/net-next/samples/bpf/xdp1_kern.o >> warning: unknown warning option '-Wno-address-of-packed-member' >> [-Wunknown-warning-option] >> 1 warning generated. >> error: couldn't allocate output register for constraint 'r' at line 473618 >> >> Thanks >> William >> _______________________________________________ >> iovisor-dev mailing list >> [email protected] >> https://lists.iovisor.org/mailman/listinfo/iovisor-dev > > _______________________________________________ iovisor-dev mailing list [email protected] https://lists.iovisor.org/mailman/listinfo/iovisor-dev
