On Wed, Sep 8, 2021 at 5:14 PM Jie Meng <jmeng@xxxxxx> wrote: > > IMUL allows for multiple operands and saving and storing rax/rdx is no > longer needed. Signedness of the operands doesn't matter here because > the we only keep the lower 32/64 bit of the product for 32/64 bit > multiplications. > > Signed-off-by: Jie Meng <jmeng@xxxxxx> > --- This change breaks selftests ([0]), please fix. [0] https://github.com/kernel-patches/bpf/pull/1746/checks?check_run_id=3550847581 > arch/x86/net/bpf_jit_comp.c | 53 ++++++++++------------ > tools/testing/selftests/bpf/verifier/jit.c | 16 +++++++ > 2 files changed, 39 insertions(+), 30 deletions(-) > [...]
