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
