diff options
| author | Daniel Borkmann <[email protected]> | 2018-02-24 01:08:00 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2018-02-23 22:50:00 -0800 |
| commit | d806a0cf2a1ddb97c91d902ef1c8219e1e2b2c4c (patch) | |
| tree | 3d168b1decd203600c39c67ba730eabb7178e829 /tools/perf/scripts/python/sched-migration.py | |
| parent | 6fe8b9c1f41dfe3209dabc5bd0726e003a065288 (diff) | |
bpf, x64: save several bytes when mul dest is r0/r3 anyway
Instead of unconditionally performing push/pop on rax/rdx
in case of multiplication, we can save a few bytes in case
of dest register being either BPF r0 (rax) or r3 (rdx)
since the result is written in there anyway.
Signed-off-by: Daniel Borkmann <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sched-migration.py')
0 files changed, 0 insertions, 0 deletions