Messages in this thread | | | Subject | Re: [PATCH] x86: bpf_jit_comp: Reduce is_ereg() code size | From | Eric Dumazet <> | Date | Thu, 04 Dec 2014 15:14:51 -0800 |
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On Thu, 2014-12-04 at 15:00 -0800, Joe Perches wrote: > Use the (1 << reg) & mask trick to reduce code size. > > x86-64 size difference -O2 without profiling for various > gcc versions:
> > Signed-off-by: Joe Perches <joe@perches.com> > --- > > compiled, untested by me, but per Alexei Starovoitov this passes > the test_bpf suite
Really, the root cause of this is the 'inline' abuse in non fast paths for non trivial functions.
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